Foam Concrete

Foam concrete

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.

What does foaming concrete mean?

A foam concrete is classified as a highly air entrained sand cement, or, cement only slurry with greater than 20% air by volume. “a cementitious material that consists of minimum 20 percent foam”.

What is the difference between lightweight concrete and foam concrete?

Concrete material made of lightweight aggregates is called lightweight aggregate concrete, while material made from a cellular matrix is generally called foamed concrete because of the pores introduced by a foaming agent.

How do you make foam for 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. The mass, or density as we call it here, (weight per cubic meter) depends on how much foam is added to the mortar.

How long does foam concrete take to cure?

Foamed concrete is often made in a ready mix truck or, for small quantities, in a cement mixer. Just like normal concrete, it sets (becomes solid) over 6 - 12 hours after it has been cast.

Is foam concrete load bearing?

Foamed concrete (FC) is a high-quality building material with densities from 300 to 1850 kg/m3, which can have potential use in civil engineering, both as insulation from heat and sound, and for load-bearing structures.

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.

Is foam concrete waterproof?

More recently, foam concrete is being made with a continuous foam generator. The foam is produced by agitating a foaming agent with compressed air to make "aircrete" or "foamcrete". This material is fireproof, insect proof, and waterproof.

Where is foam concrete used?

Foam concrete use for producing construction blocks, thermal and acoustic insulation of roofs, floors, warming of pipes, production of collapsible blocks and panels of partitions in buildings, as well as floors and basements foam concrete of higher density.

What is Aircrete foam?

Aircrete is simply concrete with bubbles. Regular concrete that we use for our roads, basements, and foundations traditionally made from Portland cement. This combination hardens into a highly dense material with impressive compressive strength.

How strong is Aircrete?

Aircrete is not as strong as concrete. It is 50% the strength of regular concrete. Unlike concrete, which contains materials that make it dense, Aircrete infuses air bubbles or styrofoam beads to make the concrete less compact and lighter.

Can you make Aircrete at home?

(1) fill a 5 gallon bucket with water and add 2 cups dawn detergent (diluted 40/1 with water) or your preferred foaming agent. (3) Collect foam in quart container and weigh it on scale. Adjust your air pressure until you achieve the foam density between 90-100 grams. More air pressure reduces the weight of your foam.

What happens if you dont water concrete?

Concrete that is not moist-cured at all dries too rapidly, and reaches less than half its potential design strength. It will also have a greater number of shrinkage cracks.

What if it rains after pouring concrete?

HOW DOES RAIN AFFECT CONCRETE? Rain falling on top of freshly laid concrete can damage the surface and compromise a level and floated finish. Even worse, if too much extra water works its way into the concrete mix, this can result in weak concrete overall.

Why does foam concrete have a lower density than concrete?

Since normal concrete contains stone aggregates it is much heavier than foamed concrete. The density of normal concrete is typically 2400 kg/m3. The density of foamed concrete depends upon how much foam is used in the mix design. Using more foam means the density will be lower.

Is foam concrete durable?

This porous structure forms the basis of the mechanical properties, thermal conductivity, acoustic and durability properties of foam concrete. One of the advantages of foam concrete is its weight reduction (up to 80%) compared to conventional concrete. The air bubbles are evenly distributed in the foam concrete body.

Why is foam used in concrete slabs?

A traditional concrete slab can crack and move within the soil as a result of heat, humidity and wet weather. The Foamex Diamond Pod system will move with the building and absorb the pressure of the heave, leaving your slab in structurally intact.

What is no fine concrete?

No-fines concrete is obtained by eliminating the fine material sand, from the normal concrete mix. The single-sized coarse aggregates are surrounded and held together by a thin layer of cement paste giving strength of concrete. The advantages of this type of concrete are: Lower density.

What are the disadvantages of foam?

Compared to other types of insulations it' is more expensive. It should not be exposed to direct sunlight and certain solvents. People allergic to foam insulation may develop health issues on coming in direct contact with it. Moreover, foam releases toxic fumes when set to fire.

What are the 4 types of concrete?

Let's take a quick look at the most common types of concrete and what they are used for:

• Reinforced Concrete.
• Lightweight Concrete.
• High-Strength Concrete.
• High-Performance Concrete.
• Precast Concrete.

13 Foam concrete Images

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