Foam Concrete.ppt
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Foam concrete is a lightweight concrete made by mixing cement paste with synthetic foam. It has a range of densities from 400-1600 kg/m3 depending on its intended use such as gap filling, partitions, or structural works. Advantages include being lightweight, free flowing to fill all voids, impermeable, insulating, durable, and cost effective compared to other materials. It can be used for void filling, thermal insulation, sunken slabs, trench reinstatement, and as a road sub-base. Foam concrete is produced by injecting foam generated using a foam generator and foaming agent into a cement slurry in a transit mixer.
Foam Concrete.ppt
- 1. FOAM CONCRETE Introduction Advantages Applications Production of Foam Concrete Foam Generator Working of Foam Generator Production Process of Foam Concrete
- 2. INTRODUCTION Foam concrete, also known as foamed concrete, foamcrete, cellular lightweight concrete or reduced density concrete, is a slurry that is created by injecting mortar or cement paste with a synthetic aerated foam. Foam concrete is mainly used in construction industry, a variety of strengths and densities of the product can be procured easily and are available for different uses. A range of density starting from 400 – 800 kg per cum for gap filling and acoustic insulation , 800 - 1200 kg per cum for partitions and walls , 1200 – 1600 kg per cum, for structural works like prefab and poured in situ structures. Strength varies from 0.5-2 mpa depending upon density.
- 3. • Does not settle, hence requires no compaction. • Lightweight - does not impose large loadings. • Free flowing - spreads to fill all voids. • As it is impermeable prevents leakages in sunken slabs • Excellent load spreading characteristics. • Once placed requires no maintenance. • Does not impose significant lateral loads. • Reliable quality control - batches are easy to reproduce. • Resistant to freeze-thaw cycle • Low water absorption over time. • Excellent fire resistant properties. • Non-hazardous either during application or in service. • Highly cost effective compared with other methods. • Enables fast work. • Sufficiently strong and durable for most applications. • Excellent sound and thermal insulation. • Easy to re-excavate ADVANTAGES OF FOAMED CONCRETE
- 4. Void Filling Disused storage tanks, pipelines, sewers, tunnels, culverts, subways, mine workings, cellars and basements, underground voids and caverns, archaeological excavations, Trenches, swimming pools, relining of pipes etc. APPLICATION OF FOAMED CONCRETE
- 5. Thermal Insulation Example: roofing, walls, floors. Sunken slabs APPLICATION OF FOAMED CONCRETE
- 6. Trench Reinstatement APPLICATION OF FOAMED CONCRETE Road and Pavement Sub-Bases Pre-cast blocks and panels
- 7. PRODUCTION OF FOAM CONCRETE To produce foam concrete we need 1. Foam generator 2. Foaming agent 3. Transit Mixer Procedure : Cement slurry is introduced in transit mixer With the help of foam generator, required amount of foam is directly discharged in Transit mixer Due to the rotation of TM , Foam and slurry gets mixed up forming foam concrete. Density is kept very low during the production and hence after successive rotations and time the density will become high due to the properties of foam. So it is important to get good foaming agent which give good foam with stability to with stand mixer rotations and pumping.
- 9. WORKING OF FOAM GENERATOR
- 10. PRODUCTION PROCESS OF FOAM CONCRETE
- 11. THANK YOU