Abstract
As the unit weight of conventional concrete ranges from 2200-2400 kg/m3. But, foam concrete unit weight ranges from 350-1900 kg/m3. Today the foam concrete becomes popular due to easily workable, low density and economical when compared to conventional concrete. The foam concrete is considered as sustainable construction material as it having low thermal conductivity and sound insulation. This investigation involves the preparation of foam concrete with a density of 1000 kg/m3 and mixed with hybrid fibers such as polypropylene fibers and Nylon fibers to reinforce the mix. This investigation studies the mechanical properties such as compressive and tensile strength at different volume fractions of Polypropylene fibers that is at 0%,0.5%, 0.75% and 1% also with a combination of hybrid fibers fraction such as (0.75% of PF + 0.25% of NF), (0.25% of PF + 0.75% of NF) and 1% of nylon fibers were used. The foam concrete was mixed with designed proportions and thereafter tested for flow ability that is workability, plastic density, dry density against standard specimens.
Highlights
At the moment there is a large demand for foam concrete in the construction industry due to its lightweight and easy preparation
The foam concrete is classified into different forms based on their densities – low-density foam concrete 300-600 kg/m3 which is commonly used for insulation and filling purpose and whereas mediumdensity foam concrete 800-1200 kg/m3 which is commonly used for non-loading bearing structures and high-density foam concrete 1200-1800 kg/m3 used for load-bearing structures
Satyanarayana, G.V.V., and Chaitanya, B.K. [11] studied the durability of M 60 grade concrete for sustainability. That in this investigation additives such as hybrid fibers such as Polypropylene and Nylon fibers were used in the foam concrete to study workability and plastic and dry densities of Medium-Range Foam Concrete with Hybrid Fibers
Summary
At the moment there is a large demand for foam concrete in the construction industry due to its lightweight and easy preparation. The density of conventional concrete ranges from 2200 kg/m3 – 2400 kg/m3 but the foam concrete the density ranges from 350 – 1900 kg/m3. The dry density of foam concrete is 20% - 80% lighter than conventional concrete. [1,2] reviewed the physical properties such as the workability and densities of foam concrete. Many investigators studied [57] and reported fresh state, physical and mechanical properties of foam concrete. [11] studied the durability of M 60 grade concrete for sustainability. That in this investigation additives such as hybrid fibers such as Polypropylene and Nylon fibers were used in the foam concrete to study workability and plastic and dry densities of Medium-Range Foam Concrete with Hybrid Fibers. The foam concrete mix designed as per I.S. codal provisions [12]
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