Preparation and Study of Borosilicate Foam Glass with High Thermal Insulation and Mechanical Strength

Foam glass is a kind of green building material that widely used because its excellent thermal insulation and mechanical properties. In this study, the borosilicate foam was fabricated by powder sintering method using recycled soda lime waste glass, quartz, borax as primary raw materials. CaCO3 foaming agent Na2CO3 flux agent. Results showed quartz content decreases from 30 to 17.5 wt.% increases 5 wt.%, pore size, porosity, increase significantly, while compressive strength slightly. When are both with outstanding performance can be prepared, whose distribution uniform, mean size 1.93 mm, total porosity 83.44%, conductivity 0.0711 W/(m⋅K), 2.37 MPa. Finally, influences content, temperature, holding time on structure various properties were investigated orthogonal test. According results, temperature has significant effect, appropriate help form uniform structure, thereby improving glass.