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SAUDI PERLITE IND.
PERLITE INSTITUTE MEMBER
We take pleasure to introduce ouselves the Al Mojel Family as one of the oldest business families in Saudi Arabia with a long tradition in basic goods and commodities in 1940's the family emphasis was on food and 1950's building material becoame the main activity of our business Saudi Perlite Ind. is one of the branches of our mother concern Al Mojel Trading & Contracting Co.
saudi perlite ind. was promoted in 1984 with a license no. of 29/s- dated 26/01/1404H . in 1987 (1407H) we started production as a 100% Saudi Manufacturing Co., under 7500 M2 factory area, with a production capacity of 6000 ton/year .
Then we expanded our factory area by 11250M2 and the capacity of production expanded to be 12000 ton at the end of this year we are the sole manufacturer of Saudi Arabia with production units in new industrial area , riyadh we are producing three kinds of Perlite :
Construction Expanded Perlite (Insulite) for building & insulation purposes, Industrial Expanded Perlite for different industrial purposes and Agricultural Expanded Perlite (Agri lite) as asoil conditioner .
In addition to the Saudi Market we are exporting large quantities of expanded perlite to all other gulf countries .
With best compliments :
Saudi Perlite Ind.
What is Perlite
Perlite is not a trade name but a type of glassy volcanic rock orginating from lava of strictly determined chemical composition and crystaline water content. The perlite ore grains are abruptly subjected to immediate hear near to their softening point 930oC the combined water rapidly vapourize causing them to expanded 4 to 20 times their origingal volume. the expansion process creates contless air voids in the grains which account for the lightweight and excellent insulating properties of Expanded Perlite , Because of these unique properties, perlite is used in the manufacure of masonry wall insulation, unerfloor insulation , cryogenic insulation, board, lightweight perlite concrete, insulating plasters, lightwieht blocks and roof deck insulation .
Chemical analysis

Silicon Dioxide

to

( SI02 )

72.0 - 76.0%

Aluminum Oxide

to

( Al303 )

11.0 - 17.0%

Potassium Oxide

to

( K30 )

4.0 - 5.0%

Sodium Oxide

to

( Na20 )

2.9 - 4.0%

Calcium Oxide

to

( Ca0 )

0.5 - 2.0%

Ferric Oxide

to

( Fe203 )

0.5 - 1.5%

Magnesium Oxide

to

( Mg0 )

0.1 - 0.5%

Uranium Dioxide

to

( Ti02 )

0.03 - 0.2%

Heavy Metals

trace

   

Sulphr Trioxide

trace

( S03 )

 

combined water

to

( H20 )

2.0 - 6.0%
     

( ORE only )

Physical properties of Saudi Perlite

Properties

Units

Ore

Saudi Perlite

colour

-

Light grey to black

Snow white to greyish white

Refractive Index

-

-

1.5

Free Moisture

% wt.

-

0.5 max.

Buk Density

kg/m (Ibs/f t)

1100 (69)

32-400 (2-25)

Grain Size

mm

0.2.6

0-5.0

Thermal Conductivity

24oC (75oF)

W/mK (BTU In/hr/ft F )

  

0.04-0.06 (0.27-0.41)

Softening Point

C ( F )

 

870-1100 (1600-2000)

Fusion Point

C ( F )

  

1280-1350 (2300-2450)

PH

-

 

6.6-8.0

Specific Heat

J/kgo (BTU ibf)

 

837 (0.2)

Specific Gravity

-

  

2.2 - 2.4

Solubility

Hot Conc. Alkail and HF acid

in NaOH

in mineral acides

H2O and weak acids

  

100%

Les than 10%

les than 3%

les than 1%

Combustability

-

  

Noon combu
Insulating Properties : * As thermal insulation, expanded perlite gives excellent results at tempratures ranging from very low to very high, For example, perlite is one of the best known insulations for the manufacture and storage

of liquid gases such as owygen at temperature as low as (-240C), At the other exrteme, it is errective as a ladle cover for molten steel to prevent surface cooling when delays in pouring occure, At high temperatures begin to soften at about (982c) while fusion of the particles at the exposed surface begins at about (1260C) .
* Perlite loose fill provides an efficiently insulating masonry walls, Tests have shown that granular perlite poured into cores of concrete block can reduce heat transmission by 50% and up to 70% when it is poured into cavity type masonry walls .
Acoustical Properties The large irregular surface area of perlite particles makes them a useful ingredient in sound abosrbing materials designed for acoustical treatment to prevent reflection and revibration of sound from ceilings and upper - wall areas A majority of acoustical plasters on the market now use perlite as a principal ingredient, while it is also incorporated in some types of acoustical tile .
Packaging Saudi perlite aggregate is marketed in plastic bags of common size about 100 liter .
Perlite Concrete Insulation
Perlite aggregate combined with protland cement and water produces an ultra-light weight thermal and sound insulating, fire-resistant concrete for roof decks lightweight floor fills, insulating structural floor decks, curtain wall system, either perfabricated or insitu, perlite cement blocks and a variety of other permanent insulating applications .
Expected Physical Properties
Physical properties of perlite vary according to mix design .
perlite concrete can be made with dry density of 340 kg/m3 or with addition of sand up to 1580 kg/m3 the lower the density the higher the insulating value .
for most uses, as proper balance between insulation value and comperssive strength a 1:6 mix is chosen with density between (384-448 kg/m3);
Mix desings A to D (Table 1) are specilically for insulation purposes and should not be used for load bearing structurs. They are ideal for the manfacutre of light weight block for use in the construction of non load bearing infill walls .

(Table 1) Propsed mix designs

 

Cement/Perlite Ratio by volume

Cement

Kg

Perlite

M

Water

Ltrs.

Air Entraining Agent Ltrs.

A

1:4

375

1.0

300

4.1

B

1:5

300

1.0

290

4.1

C

1:6

250

1.0

270

4.1

D

1:8

188

1.0

270

4.1

320-384 kg/m3 Density
For use where insulation or lightweight are paramount considerations and where the perlite concrete is not required to provide any structural strength i.e. insulated slab floors on grade. back-up for radiant heat, drainage, fill and certain floor fill requirements. This density of concrete should be used when temperatures below 40C (39F) are anticipated at the time of placement .

384 - 448 Kg/m3 Density
Offers an ideal balance of low dead load weight, adequate compressive and indentation strengths and good insulating value, For lightweight structural roof construction perlite concrete is placed over gavanixed metal forms, paperbacked wire mesh, metal lath, formboards other suitable form materials. Also-use as permanent insulation and drainage fills over structural concrete and precast concrete slabs. Physical properties comply with requirements for bonded roofing materials.

352 - 432 & 464 - 528 Kg/m3 Density
For use where intermediate thermal and strength properties are required .

544 - 640 Kg /m3 Density
For use where higher strengths - compressive, indentation or nail holding are more important than insulating value. i.e., floor fills and certain lightweight structural roof designs, Floor fills shall have a topping sand and pea gravel concrete or other suitable wearig surface .

(Table 2) Show the expected physical proporties of proposed mix designs

Perlite Cement/Aggegalte

Ratio by volume

Compressive Strenght Range KPa

Oven Dry Density

kg/m3

Dry Density

range

kg/m3

Wet Denisty

range

kg/m3

Thermal Conductifity W/MK

1:4

2413-3447

576

544-640

808+-32

0.10-0.11

1:5

1585-2344

488

488-544

728+-32

0.09-0.10

1:6

965-1378

432

384-488

648+-32

0.08-0.09

1:8

552-861

352

320-384

584+-32

0.07-0.08
Perlite/Sand Insulating Concrete
One ot most effective ways to reduce the dead load in multi-storey building is to lighten the weight of the floors. Laboratory tests and dield investigations have shown that perlite /sand concrete is suitable for use over structural concrete and various types of light structural forms such as corrugated steel, rib steel or cellular steel floor units and plywood subfloors. The compressive and indentation strengths of perlite and concrete are adequate for its use as a base for any of a wide variiety of floor materials such as resilient tile, ceramic tile, linoleum , terrazzo. hardwood or carpeting .
Floor fills have been designed with dry densities from (960-1600 Kg/m3) using varying commbinations of perlite concrete aggregate and conventional concrete sand . (Note : Sand and gravel concrete weight 140-150 lbs./ft3, 2240-2400 Kg/m). Table (3) covers the range of mixes and properties possible with various combinations of perlite and sand. Desired slump is generally between (76.2-152.4 mm) although wetter mixes are common where properties have been verified by trial mixes .
Air entraining admixtures are used in perlite/sand concrete mixtures to improve workability, reduce segregation and entrain air. Air entraining admixtures must be carefully controlled to accomplish the desired results without reducing the strength of the concrete .

(Tabel 3) Material mix proporations

 

Cement

m3

Perlite

m3

Sand

m3

Water

m3

Air Entrainment liters

E

1

3

2.2

1.51

3.2

F

1

3

2.0

1.08

3.2

G

1

1.6

2.5

1.24

3.2

H

1

1.1

2.1

1.05

3.2

I

1

3

1.75

1.13

-


(Table 4) Typical physical proporaties

 

Typical Dry Density

kg/m3

Compressive Strength Range kpa

wet Density When Placed

kg/m3

E

1040

5520-6210

1312+-80

F

1200

6210-8280

1280+-80

G

1312

7590-8970

1568+-80

H

1408

15.870-17.250

1680+-80

I

1584

13.800-15.180

1760+-80
Normal Conditions : Perlite concrete has an adequate mixing water content so as to have sufficient water for proper curing of the concrete without additional precautions . Under these these conditions the concrete should be permitted to air dry . Extreme Dry Conditions : When perlite concrete is placed during extreme dry weather, additional water may have to be sprinkeld on the concrete for a sufficient period of time to allow hydration of concrete . Cold Weather Conditions : For winter pouring the use of high early strenght (Tybe III) portland cement is recommeded . All concrete materials, forms with which the perlite concrete may come in contact should be free of frost . No frozen material or materials containing ice should be suded. When it is anticipated outside temperature will be below (4.4C) 24 hours after placing of the concrete, the mixing water should be heated to a maximum of (48.9C) Perlite insulating concrete should not be placed during freezing weather unless the contractor is experienced in the special techniques required
Admixtures
Calcium chloride, any admix containing chloride salts shall not be used in perlite concrete roof inuslation systems .
It is recommended the deck be allowed to cure for a minimum of three days . After freezing or heavy rainfall give a thorough brooming if required if required berore roofing .
The portion of the deck which has excessive scaling should be removed to solid concrete, and patched patch additives may be used at the applicator's option . If minor scaling occurs broom surface before roofing Perlite concrete exposed to extreme cold after setting will provide adequate strength to receive roofing if not subjected to mechanical damage. Therefore, all traffic should be prohibited .
Damage after placement caused caused by other rtades by other trades should not be the responsibility of the applicator .
Applicable Standards
- ASTM C 332 - Specification for light weight aggregete for insulating concrete .
- ASTM C 495 - Test for compressive strength of light weight Insulating concrete .
- ASTM C 513 - Securing, Preparing and Testing Speciments from handened lightweight insulating concrete for compressive strength .

Roof Decks
Perlite insulating concrete roofdecks offer architects, contractors and building owners several important benefits which include :

* Excellent Inuslating Values
* Excellent Fire Ratings
* Lightweight
* Slope to Drain
* Monolithic Roofing Base
Perlite concrete roof deck insulation is an ideal base for conventional built-up roofing membranceas well as single ply systems. It provides superior strength and fire safety over other roof insulation materials . Its rigid monolithic surface' has a minumum compressive strength of 125 psi compared with typical board systems having strengths of only 10 to 35 psi .
Slope-to drain is easily accomplished by varying the thickness of perlite concrete .
Perlite insulating concrete may be placed over Concrete Slup or slotted galvenized steel - decking, poured -in- place concrete of precast concrete panels.
Lightweight perlite concrete insulation is particulary suitable for use over pre-cast concrete construction as these systems often have uneven joints and camber differentials. Perlite concrete insulation levels any uneveness to provide a seamless, smooth hard surface .
Fire Ratings There are a number of different perlite concrete roofdeck designs that offer fire ratings or from 1 hour to 3 hours .
3 Hours : Roof deck 2 in. (50.8 mm) minimum thickness perlite concrete on 28 gauge galvanized steel from units supported by steel joists 4 ft. (1.22 m) on center . Ceilings of 7/8 in. (22.2 m) perlite gypsum plaster on expanded metal lath atached to 3/4 in. (19.1 mm) furing channels wire-tied to lower chord of joists .
2 Hours :

Same as above except perlite - gypsum plaster ceiling shall be 3/4 in. (19.1 mm) thick .
1 Hour :
Corrugated galvenized steel deck topped with 2 1/4 in. (57.2 mm) average thickness of perlite concrete reinforced with 48-1214 litre mesh. No ceiling protection. Beams protected with 7/8 in. (22.2mm) perlite - gypsum plaster on metal lath. (For details see Underwiters laboratories E-1, Design no.P903) .
2 Hours :
2 3/16 in. (55.6 mm) minimum thickness perlite concrete reinforced with wire mesh on 24 gauge galvanized steel from units with supports spaced not over 8 ft. O.C. or not over 6 ft.O.C. for 26 gauge units. No. ceiling protection . Beams or steel bar joists individually protedted with spraved fiber fireproofing.
Roof Drainage
An important benefit of perlite insulating concrete roofs is that they may be sloped to drain. This feature eliminates standing wate which is a major factor in premature roof failure .
Perltie insulating concrete roof decks solve drainage problems while meeting insulation requirements.
Design for slope A minimum slope of 1cm/m is recommended for proper drainage and maximum roofing performance.
Average Thickness In order to calculate thermal resistance, the average thicness of the perlite concrete. The following relationship will be used .
At = 2/3 (HP - LP) + LP
ready for application of roofing
Insulating Values
Insulating values of perlite concrete roofedck depends on the density of concrete mix that is prepared. Typical k values for different density and mix design are shown in table 2 .
Atypical roofdeck designs with different fire rating are illustrated .
At = Average Thickness
HP = Thickness at High point
LP = Thickness at Low point
When perlite concrete is to be placed over steel from units, one-half the depth of the corrugations must be added to the average thickness to estimate the volume of concrete required . The following Table contains the average thickness of perlite concrete in the corrugations of various, commonly used, steel decking .

 

Gauage / Type

Nominal Dimensions, In

Average Thickness of Perlite Concrete In

25 ga

9/16

0.28

26 ga

15/16

0.47

24 ga

1-5/16

0.66

“B”

1-1/2

0.52
Nail Holding Power
A major advantage of perlite inuslating concrete is the fact that it readily accepts mechanical fasteners (self-clinching nails or specialized staple systems ). In general, the force required to remove such fasteners from perlite concrete depends on the type of fastener used, density and compressive strength of the concrete, and the age of the concrete at the time the fasteners were driven and tested .
Although a minimum nail holding power of 40 lbs per fastener is recommended, perlite insulite, Inc. does not recommend or specify any brand or type of nail Such recommendations are the prerogative of the roofing manufacturer .

Roffing Recommendations Over Perlite Concrete
The built-up roofing or single-ply membrance should be applied as soon as the perlite insulating concrete can carry construction traffic, and is dry enough to develop adhestion with hot asphalt or pitch .
Roof application should proceed when the perlite concrete has been cured a minimum of three days. Provision shall be made for perimeter or edge venting by use of an open metal gravel guard or facia .

Testing And Pprovals
Perlite roof deck insulation systems have been tested and approved by Underwriters, laboratories, Factory Mutual and Code Authorities throughout the U.S.A . The system is rated as non-combustible by Factory Mutual which is a superior rating to their Class 1.U.L. Design P920 successfully achieved the first 2 hour rating for any system of this kind under full scale fire conditions. Systems over glavanized steel form units meet the criteria for U.L Class 90 Wind Uplift Resistance as well as F.M. 1-60 and 1-90 .

Perlite Loose Fill Insulation
* Superior dynamic thermal performance .
* Contains no asbestos or comparable fibers
* Inorganic
* Treated to limit water retention
* Non-Combustible
* Non-Toxic
* Easily installed
* Non-Settling
* Non-bridging
* Readily Availble

A key to perlite loose-fill insulation's excellent performance in masonary wall systems, is its free flowing characteristic. In a masonry wall system, granules of silicone treated perlite seek out and completely fill the smallest crevices, voids and mortar areas without bridging. This flowability of perlite loose-fill insulation assures a completly and efficiently insulated masonry wall and avoids the "chimney effect" or "static cling" effect characteristic of EPS products. Perlite's flowability also allows the masonary contactor to install several courses of block prior to the installation of insulation of insulation into core and ear holes .
Published and calculated thermal transmittance values do not consider the pysical properties of insulation with regard to flowability, settling and the amount of the core that is actually filled .

Properties
Thermal insulation-Perlite contains countless tiny air cells which account for its excellent thermal insulation and light weight. Thermal conductivity factors at the recommended density range of (80-128 kg/m3) are shown in Fig (1) .

* Permanency - Perlite is inorganic and therefore, rot vermin and termite resistant and noncombustible with a tusion point of approximately (1260C). It is as permanent as the walls which contain it .
* Non-settling-Perlite loose fill supports its own weight in the wall without settling as verified by actual field measurements .
* Flowability-Perlite consists granules which are free flowing to seek out and completely fill the smallest crevices and mortar areas without bridging .
* Perlite loose - fill insulation is noncombustible with a fusion point of approximately (126C) while EPS Products are combustible .
* Perlite loose - fill insulation improves the fire rating of an 20 cm concrete block from 2 hours to 4 hours -a 100% improvement .
* Perlite loose - fill insulation is easey to install and requires no special training or equipment. In addition, it my be installed at any resonable wall height as construction progresses .
* Cost Savings - Insultion is essential in all construction for energy conservation . The original cost of installing perlite loose fill insulation can be recoverd quickly due to substantial reductions in heating and air conditioning energy consumption. In addition, perlite loose fill insulation cuts installation costs since it is lightweight and pours easily and quickly in place without need for special installation equipment or skills. The insultion may be poured directly into walls or empted into a simple wood or metal hopper which can be slid along the wall to direct the free flowing perlite into cores of cavities thus insulating all voids and air pockets .

Perlite is The Superior Insulation
Oynatherm Engineering's has shown conclusively that perlite masonry loose fill insultion is the superior concrete block insulation when compared to expanded polystrene (EPS) inserts, expanded polystyrene (EPS) beads and vermiculite .

Perlite is Better
- Perlite VS EPS Insert
- Perlite - 22% More Effective Than
- EPS Insert
- Perlite VS EPS Beads
- Perlite - 12% more effective Than
- EPS Beads
- Perlite VS foam
- Perlite - 7% more effective than
- Foam
- Perlite VS Vermiculite
- Perlite - 6% more effective than
- Vermiculite
* EPS = Expanded polysterene

Thermal Transmittance Calculations
In order to calculate the thermal transmittance, U factor, of a wall system, the thermal resistances of the individual components in series can be added together to obtian the toal resistance. The reciprocal is the U factor. The thermal resistances for the individual components can be obtained from the literature or if the thermal conductivity of a homogenous component is known, the thermal resistance of that component can be calculated by dividing the thickness of the component by the thermal conductivity .
For example : the resistance of 3 in (76 mm) of 5 pcf (80 kg/m3) perlite is 3/0.32=9.38 F. ft2. h/Btu (1.65 k.m2W) . Using published data on thermal conductivity of concrete blocks from the National Concrete masonry Association (NCMA) and calculation procedures verified by actual by actual tests at Dynatech Research & Development Co., R values and U factors for uninslated concrete block walls (including face sell mortar bonding) are shown in Table 1. It should be noted that the values in Table 1 were determinend using the series - parallel method of heat flow calculation as described in the ASHRAE Handbook of Fundamentals. While the series - parallel, method yields more conservative values than other heat flow calculation techniques, it provides more representative data on actual performance of the wall construction .

Table (1)
Thermal factors resistance ( R ) values and thermal trainsistance (U) factors3 of concrete block walls uninsulated and insulated with perlite loose-fill .

Block

  

6 in block

          

8 in. Block

        

12 in block

  

Density (PCF)

Aprox. Unite Wt. (Ib)

Unisulated

R3

 

U4

Insulated with perlite

R3

 

U4

Approx. Unite

wt.(Ib)

Unisulated

R2

 

U4

Insulated with perlite

R3

 

U4

 

R3

unisulated

U4

 

 

R3

iinsulated with perlite

U4

80

17

1.80

0.38

5.93

0.15

22

2.03

0.35

8.25

0.11

2.30

0.32

11.93

0.08

95

20

1.57

0.41

4.86

0.18

26

1.77

0.38

6.76

0.13

2.00

0.35

9.64

0.10

105

22

1.45

0.44

4.25

0.20

29

1.63

0.40

5.91

0.15

1.84

0.37

8.36

0.11

115

24

1.34

0.46

3.69

0.22

31

1.51

0.42

5.14

0.17

1.70

0.39

7.21

0.12

125

26

1.20

0.49

3.04

0.26

34

1.38

0.45

4.23

0.20

1.54

0.42

5.88

0.15

135

28

1.06

0.52

2.42

0.31

37

1.21

0.49

3.37

0.24

1.38

0.45

4.64

0.18

Table (2)

Resistance values for veneer and cavity walls calculations
 

R Values F. ft2 h/Btu

R Values

K. m2/W

Outside Air Film

0.17

0.03

Common Brick

0.20

0.04

Face Brick

0.44

0.08

Air Space in Cavity 3/4 - 4 in. (19-102 mm )

0.97

0.17

1 in. Cavity Filled with 5 pcf perlite (80.kg/m2)

3.12

0.55

2 in. Cavity Filled with 5 pcf perlite (80 kg/m2)

6.25

1.10

3 in. Cavity Filled with 5 pcf perlite (80 kg/m2)

9.38

1.65

4 in. Cavity Filed with 5 pcf perlite (80 kg/m3)

12.50

2.20

Reflective air space

3.08

0.54

Furring (Non reflective air space)

1.01

0.18

Gypsum or plaster board 0.5 in. (13 mm)

0.45

0.08

Gypsum or plaster board 0.625 in. (16 mm)

0.56

0.10

Inside air film

0.68

0.12
Sample U factor calculations for Veneer and R values
Cavity Walls
Veneers Walls
Given : Veneer Wall of 4 in. face brick, 8 in. 105 pcf block filled with 5 pcf perlite, determine the U factor .
1. inside air film (from Table2) ............... 68
2. 8 in. 105 pcf blockfiiled with 5 pcf perlit................. 5.91 (from table 1)
3. face brick (from table 2) ....................... 44
4. outside air film (from tabel 2) ........................ 17
U = 1/Rt = 0.14
to find the total R of A Veneer Wall, add the R values for the veneer material (from Table 3), inside and ouside air films (from table 3) and the insulated block (from table 2). Take the reciprocal of the total R to find the U factor .

cavity Walls R values
Given : Cavity wall of 4 in. face brick, 3 in. cavity filled with 5 pcf perlite, 8 in 105 pcf block filled with 5 pcf perlite, determine the U factor .
1. Inside air film (from table 2) .................... 68
2. 8 in. 105 pcf block filled with 5 pcf perlite
(from table 1) .................................. 5.91
3. 3 in. cavity filled with 5 pcf perlite
(from tabel 2) .............................. 9.38
4. 4 in. face brick (from table 2) .............. .44
5. outside air film (from table 2) .......... 017
R Total 16.58
U = 1/rt = 0.06
To find the total R of cavity wall, follow the same procedure as for veneer walls adding in the R of othe perlite filled cavity (from table 2) take the reciprocal of the total R to find the U factor .

Installation
(a) The insulation shall be installed in the following locations :
1. In the cores of all exterior (and interior) hollow masonry unit walls .
2. In the cavity between all exterior (and interior) masonry walls .
3. between exterior masonry walls and interior furing .
(b) The insulation shall be poured directly into the wall at any convenient interval. Wall sections under doors and windows shall be filled before sills are placed .
(c) All holes and opening in the wall through which insulation can escape shall be permanently sealed or caulked prior to installation of the insulation Copper galvanized steel, or fiber glass screening shall be used in all weep holes .
Applicable Standards, Specifications and References
ASTM Specification C549 Perlite Loose Fill Insulation .
ASTM Specification C520 Denisty of Garanular loose fill insulation .
ASTM C236 Test method for steady-State Thermal perfomance of Building Assemblies by means of a guarded hot box .
ASTM Specification E84 Test for surface burning Characteristics of building materials .
Federal specification HH-1-574b thermal insulation (perlite) .
FHA Use of materials bulletin UM-37 .
GSA Commercial item dscription A-A-903 insulation, thermal (Expanded Perlite) .
Brick institute of of american technical notes no. 21A .
National concrete masonary assoc. tek 101.
Federal specification HH-1-515D for . Corrosion/Smoldering combustion / critical radiant flux/mositure absorption .

Save On Building Cost. Save On Energy Cost
Save On Air Conditioning Cost
PERLTIE LIGHT - WEIGHT BLOCKS
perlite light weight fire resistant insulated blocks are made of perlite, cement & sand which are used in construction of non load bearing infill walls & slabs. one of the most effective ways to reduce the dead load in a multi storey building is to lighten the weight of the structure .
Perlite is a glassy volcanic rock originating from lava of strictly determined chemical composition and crystalline water content, the perlite ore is expanded four to twenty times of its original volume by heat which creates numerous air voids in the grains which account for the light weight and hight insulation properties of expanded perlite .
Perlite blocks can be manufactured from a density range of 500 kg/m3 to 1200 kg/m3 with an average reduction in weight of 50-60% as compared to conventional slabs, there by enabling reduction in structural cost. perlite is non combustible and has fusion point of 2300 F & hence enhances the fire rating of blocks . perlite aggregate has thermal condutivity at 75 F (24 C) as .04 - 06W/m.k which results into better thermal insulation there by reducing electricity & air conditioning cost for the owner and the nation which spends a lot on power generation but subsidies to consumers . perlite light weight blocks reduces sound transmission between floors & walls, both air borne and impact sound .
Perlite weight hourdi blocks are available in depths of 100 mm. to 400 mm. there by offering various options to consultans/clients. perlite hollow blocks are also available in thickness 10, 15 & 20 CMS. perlite aggregate confirms to astm C 330 and BS 3797, the standard specifications for light weight aggregates that can be used to manufacture for blocks according to Bs 6073 .
Perlite blocks are used for walls and slabs in multi storeyed buildings, villas & cold stores. they are also used for constrction of extra floors on buildings already constructed, renovation in existing buildings and or big mosques to reduce dead load on stucture .
* light Weight
* Fire Resistant
* Insulated

Save on Building Cost. Save on Energy
Save On Air Conditioning Cost
LIGHT WEIGHT INSULATED BLOCKS FOR SLABS & WALLS
Light Weight blocks are made up of cement, sand and light weight aggregates mainly used in reucing deadload on buildings and for insulation purposes. These blocks can be manufactured from a density rangd of 300 kg/cum to 2000 kg/cum with an average reuction in weight of 50-60% as compared to conventional slabs . the compressive strength will vary from 3.0 N/mm2 to 7.0 N/mm2 on nett area at denstity between 525to 800 kg/cum. the thermal conductiveity at 400 kg/cum will be 0.13 W/m.k additional properties include sound reduction index of 40 dB, with a saving in air conditioning tonnage of 20% .
LIGHT WEIGHT BLOCKS ARE AVAILABLE IN TWO DIFFERENT TYPES :

(A) WITH PERLITE : FIRE RESISTANT
Applications :
1. for walls and slabs in cold in cold stores, villas & multi storeyed bldgs.
2. for renovation works in old bldgs .
3. for construction of extra floors on bldg. already constructed .
4. for big mosques to reduce dead load on structure .
5. for balcony parapet walls and cantilever slabs .

Advantages :
1. fire resistant
2. economical .
3. better thermal insulant .
4. higher thermal resistance & lower specific thermal capacity .
5. considerable saving in electricity cost.
6. reduction in dead load due to reduction in weight of blocks .
7. better sound reduction index .
8. better strength to weigth ratio as copared to density .
9. reduced air condition equpment cost with the use of light weight blocks .
10. low water absorption .

PROPERTIES * Fire resistant :
Perlite blocks are non-combustible. perlite aggregate has a fusion point of 2300 f and no flaming combustion. 2 hours rated 20, 25 or 30 cm. Concrete block walls is improved when cores are filled with perlite .
* Thermal insulation :
Perlite blocks offer better thermal insulation than commonly available block, Thermal conductivity of perlite at 75f (24 C) is .04 - .06 W/m. K. Valuable energy is saved by perlite blocks, Greater comfort in a wide range of climatic conditions .
* Light weight :
Perlite blocks have a density of 500-750 kg/m3 which is 2/3 times lighter than traditional concrete blocks of same size .
* High strength :
Light as it is, perlite blocks have a film structure due to closed cells structure of perlite aggregate . The compressive strength of perlite concrete is hight, making the material equally good for structural and non-structural uses .
* Noise absorption Perlite blocks provide excellent noise absorption, superior to that of a number of commonly used building materials, reducing sound transmission .
* Permanent
Perlite is inorganic, non toxic, rot, vermin and termite resistant and non combustible, It is as permenant as the structure which contains it .
* Dimensional precision :
Thanks to the material's physical stability after casting, size of perlite blocks remains unchanged the result is exceptionally hight precision in dimension .
* Quick installation :
Weighting only half of traditional concrete blocks transportation, handling and installation is easier & faster .
* Economical :
There is enormous reduction in dead load resulting into saving of construction cost.

2.2.4 Methos of mixing
1. Determine load of mixer .
2. Add correct quantity of water
3. Add air entraining agent plus cement and mix until slurry .
4. Add Saudi Perlite aggregate .
5. Mix for 2 - 5 mins .
6. Check for slump about 7" (18cm) for mixes A to D and 3" to 6" for mixes E to 1, if less, mix for a further 2 mins. and repeat check do not add extra water .
7. Check wet density and calculate the yield .
8. Discharge the mix .

2.2.5 Recommendations :
Air entraining agent (AEA) : is used to improve workability, control of water content and insulation value. It reduces density, increases yield, contributes to the insulating factor and the resistance to water absorption. Excess AEA reduces strenght. The correct amount and even distribution of AEA is essential .
Wet Density : is imprtant in the control, of the physical properties and yield of concrete. Strength and insulating values depend upon the wet density. Hight density implies greate strength but lower insulation value .
mixing Time : Uner mixing results in loss of yield and over mixing adversely affects airentrainment .
Yield : is the ratio of the volume of wet concrete to the volume of the Saudi Perlite aggregate used in the mix. if correct quantities of materials and mixing procedures are used a 100% yield should result whcih is of extreme importance from the point of view of economy and pyhsical properties of the dry concrete .

Project Reference
List of the important project done by Sadui Perlite
1. Air bases / ministy of defence ballas / Nedam Group / Al-Henaki Co. Thermal insulation, Slopping, Light Weight Concrete .
2. Saudi Aramco - Dahran / Alwadani Est. for insulation - Dahran, Hafuf Thermal insulation / Light Weight Concrete .
3. king Khalid intl. Airport, Riyadh / Hanil Development Ltd. Thermal insulation / Light Weight Concrete .
4. Al Khafji Tv project, Al Kharj / Saudi Arabian Dumez Co. Thermal insulation / Light Weight Concrete .
5. Royal Technical Institute, Riyadh Thermal insulation / Light Weight Concrete .
6. Ministry of Finance, Govt. Security printing press, Riyadh Thermal insulation , slopping .
7. Dept. of Al Zakkat and incom, Riyadh Termal insulation / Light Weight Concrete .
8. General presidncy of Girls Education Thermal insulation / Light Weight Block
9. National Guard, Riyadh Thermal insultion / Light Weight insultion Block .
10. High Education ministy , Riyadh Thermal insulation / Light Weight Block .
11. Ministy of labour, Riyadh Thermal Insulation / Light Weight Concrete
12. Govt. Building, Dubai, U.A.E. Khalifa Hamoud Block Factory, Duabi Thermal insulation / Light Weight Block
13. Riyadh Bank H.O. Riyadh Thermal insulation & Slopping
14. Mac Berger Restaurant, Riyadh Loosefill insulation
15. Al Khaima Tent. Park Center, Riyadh Thermal insulation / light Weight Block
16. Al amir Furniture H.O. Riyadh
Hashim Est. Riyadh / Light Weight block
17. Al ali General Hospital
Roof deck insulat. & light Weight Concrete for slope
18. H.O. of education (G.C.C) in Riyadh
Perlite Blocks .
19. Benevolent Association for Handicapped Childern
(Walls, Roof deck and Dome thermal Insulation) .
Including Private Palaces, Many other Projects and 1000's of Villas .


Company's Manager Eng. Fahad Ibraheem Almojel
Address kingdom of Saudi Arabia - Riyadh
Tel: 4982616
Fax: 4980115
Factory Tel: 2652168
Fax: 2652709
Email HQ@saudi-perlite.com.sa