Concrete, an effective rigid material that acts as a barrier to restrict sound waves in buildings. This research study is mainly based on the experimental testing on the acoustic properties that can be induced in concrete using perlite material. When sound passes through the concrete having lower density, it gets dispersed and the decibel of sound is decreased, thus it acts as a better sound insulator. Concrete specimens along with the addition of perlite are tested for their strength and optimum dosage of perlite to be added in order to have a improved acoustic behaviour. It is identified that with 5% replacement of perlite for cement in concrete, improved the acoustic behaviour of concrete by 26.12%. In order to have adequate strength in concrete, 30% GGBS is partially replaced for cement and hence the strength is improved by 12.5%. From this work, it is depicted that perlite can act as a better material to make concrete as a sound insulator. This composite can be used in various applications in buildings as precast insulation panels, bricks, tiles etc to make sound insulation.

Recent investigation proved that the major threat produced by the cement industries can be prevented by using a unique type of concrete called geopolymer. Here, the strength and heat based properties of light weight self-cured geopolymer tiles are investigated. The mix is prepared by taking Sodium hydroxide solution of 10 M, sodium silicate to sodium hydroxide ratio as 2.5, liquid to flyash ratio of 0.4 as the base, Superplasticizer CONPLAST SP430 which is of Napthalene based is used to improve geopolymer concrete’s operability. Here calcium rich GGBS and OPC are added at an interval of 1% as additives in the range of 5 -10%. A tile at ambient curing with 10% of GGBS showed a better outcome of 37.5% than the oven cured one. Inorder to make geopolymer as a good thermal insulating material with adequate strength, different types of foaming agents are added to the geopolymer mix. Foaming agents helps in developing pores inside the specimen which makes them light in weight. Here, hydrogen peroxide is used as foaming agent, which is added to the geopolymer mix in the range of 0.5-1.5% at the interval of 0.5%. 0.5% of hydrogen peroxide showed a better strength in bending such as 81.3% higher than the other and also shows good thermal property.