Effect of granulated furnace slag on properties of foam concrete

Concrete, nowadays, is the most and widely used construction material. Concrete technology is highly improved. Special concretes have been developed for different purposes. One of them is foam concrete. It is produced by mixing foam and mortar. Foamed concrete has a high porous structure. In this way it is a concrete type which has a high thermal performance. In this study, the effect of granulated furnace slag and cement content on properties of foam concrete was investigated.Granulated blast furnace slag was replaced with sand in concrete mixes produced in 50% and 100% proportions. Cement contents used were 300, 400 and 500 kg/m3. Physical, mechanical and thermal conductivity tests were done on the concretes produced. Bulk densities between 926–1132 kg/m3, compressive strengths between 1–1.62 MPa and thermal conductivity coefficients between 0.20–0.264 W/mK were observed by depending on the compositions of concretes. It was observed that granulated furnace slag can be used instead of sand. There is no need cement in order to increase strength of concrete. It was observed that porosity is more important for strength.