What is foam concrete specification?

What is foam concrete specification?

Foam concrete is a very fluid, lightweight cellular concrete fill material, produced by blending a cement paste (the slurry or mortar), with a separately manufactured, pre- formed foam. The density of foam concrete is determined by the ratio of foam to slurry and densities range typically between 300 and 1600 kg/m3.

How strong is foamed concrete?

Foamed concrete can have a wide range of dry densities (400–1600) kg/m3 and compressive strengths (1–25) MPa.

How do you measure foam for concrete?

Through a large number of trial-mixing tests, the basic parameters of preparing cement-based foam concrete are obtained: water-cement ratio of 0.39-0.41, foaming agent content of 0.66%-0.70%, foaming stabilizer content of 0.021%-0.025% and water reducer content of 0.20%-0.24% of cement quality.

What is concrete foaming agent?

Foaming Agent for Concrete is foam produced from the chemical reactions, which forms the cellular structure in the concrete. Foaming Agent for CLC Bricks is to be diluted in water and then foam is produced in a concrete foam generator with compressed air. Foam produced has very fine and stable high quality foam.

Is foamed concrete waterproof?

What are the advantages of foamed concrete? It can be placed easily, by pumping if necessary and does not require compaction or levelling. It has excellent water and frost resistance and provides a high level of both sound and thermal insulation.

What are the advantages of foam concrete?

Advantages of Foam Concrete

  • It has a lightweight.
  • It has low thermal conductivity and good sound insulation properties which are not available in ordinary concrete.
  • It has excellent freeze and thaws resistance.
  • Foam concrete is a free-flowing concrete and can be placed without compaction.

What is foamed concrete used for?

The lightweight foamed concrete blocks are mainly used to build partition walls. The lightweight nature of the blocks means that they impose a minimum loading on the building. Foamed concrete blocks also provide good thermal insulation and sound insulation.

How do you make light weight concrete?

Mixing Lightweight Concrete Using less sand can make the product lighter, but it can also make the concrete weaker structurally. A simple recipe for basic lightweight concrete is to combine 8 parts sand, 8 parts cement and 8 parts perlite to 5 parts water.

What is the density of foam concrete?

300 ~ 500 kg/m3
Foam concrete is a kind of porous concrete made by mixing cement paste with foam agent after hardening. Its apparent density and compressive strength are 300 ~ 500 kg/m3 and 0.5 ~ 0.7 MPa respectively.

Does Aircrete absorb water?

Aircrete absorbs water over time hence the need to add cover using materials like plaster. Expansion of the absorbed water makes the aircrete prone to cracking over time.

Is lightweight concrete stronger than regular concrete?

Structural lightweight concrete has an in-place density of 90 to 115 lb/ft³, whereas the density of regular weight concrete ranges from 140 to 150 lb/ft³. Nevertheless, a higher compressive strength of 7000 to 10,000 psi can be attained with lightweight concrete.

Does light weight concrete crack?

A new report by the Virginia Transportation Research Council in the USA has shown that lightweight concrete decks exhibit fewer cracks than their conventional counterparts.

What do you use to make foam concrete?

Foam Concrete (FC) is made by mixing foam into mortar. The mortar is a cement mix with sand and water. As a result you end up with a mix that is lighter than “normal” concrete.

What should the densities of foamed concrete be?

As in normal concretes the greater the air content the weaker the material, so with foamed concrete densities ranging from 200kg/m3 to 1900kg/m3 it is not surprising that the lower densities produce the lower strengths and at present even the densities at the upper limits do not produce strengths much above 15N/ mm2 .

Why are protein based foams used in concrete blocks?

Uses and formation: Protein based is commonly used for the low density and for higher densities synthetic foaming agents were preferred. Foam can create through forcing the chemical, air and water by restriction which results foam formation. Synthetic foam requires less energy while protein foams need more.

What do you need to know about propump concrete mix?

Propump can offer a full mix design service based on many years of experience both in the field and in the test house. What is Foamed Concrete? Foamed concrete is a highly air entrained sand cement or cement only slurry with greater than 20% air by volume.

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