Monday, 3 September 2018

CELLULAR LIGHT WEIGHT CONCRETE BLOCK



CLC
MIX DESIGN
FOR 1 CUBIC METRE CLC:

Oven-Density in KG/m3:
400
600
800
1000
1200
1400
1600
2350
Conv. Concr.
Sand                                                  (kg)
-
210
400
560
750
950
1100
1950
Cement                                             (kg)
300
310
320
350
360
380
400
320
Water in mortar                              (kg)
110
110
120
120
140
150
160
180
Quantity of Foam                           (Ltrs)
(800)
(715)
(630)
(560)
(460)
(370)
(290)
-
Water in Foam                                (kg)
64
57
50
45
37
30
23
-
Wet Density                                  (kg/m3)
474
687
890
1075
1287
1510
1683
2400
Foaming Agent use                        (kg)
1.5
1.4
1.2
1.1
0.9
0.7
0.6
-
Water/Cement Ratio
0.58
0.54
0.53
0.47
0.49
0.47
0.46
0.56
Maximum Strength                   (N/mm2)
~ 1
~ 2
~ 3
~ 4
~ 8
~ 12
~ 18
25 +
Average Lambda                      (W/m x K)
0.096
0.18
0.21
0.32
0.405
0.45
0.55
2.1
 


(Achieved strength at the lab with optimum sand and cement qualities) More cement will increase strength. Using lightweight aggregate in matrix of Cell.
Concrete increases strength up to 500% in overall densities below 1000 kg/m3





GENERAL REMARKS
Recommended weight of foam              Minimum 80 g/ltr
Crushed Sand might mechanically destroy part of the foam
Water to process foam                                    Potable, if possible below 25 degree celcius
Dilution of foaming agent                                1 part of Neopor to 40 parts of water
Recommended Cement                                   Portland CEM I 325R or higher grade, or similar
Recommended Sand                                         Washed river sand, Density/Sieve: Up to 1000/up to 2mm
                                                                              Minimum 15-18% fines                     Up to 1200/up to 4mm
                                                                              Upto 1400/up to 5mm                      Up to 1600/up to 6mm


1 kg of Neopar foaming agent, diluted in 40 parts of water
Yields approx 510 litres of foam at 80 grams/litre

Captive densities are oven-dry (24h at 100 degree celcius)
Appr. 25% of the total volume of water (in mix and in foam)
in relation to the weight of cement used will crystallize and
therefore will have to be added to the dry-weight of the cement
and sand used to reach the “oven-dry” density.






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