HEN Pengfei, QIN Zipeng, TIAN Yan, LI Gang, LUO Chengyan
(College of Water Conservancy and Architecture Engineering, Shihezi University, Shihezi 832000, Xinjiang, China)

Abstract: In order to study the effect of basalt fiber content on the properties of fly ash foam glass, foam glass was prepared from the mixture of fly ash, glass powder, basalt fiber and additives. The corresponding influence of different basalt fiber content on fly ash foam glass’s physical properties, mechanical properties as well as thermal conductivity were studied. The results show that with the increase of basalt fiber content, there is an increasing tendency in both the apparent density and the heat conductivity coefficient of fly ash foam glass; when the basalt fiber content is 3‰ -4‰, the apparent density changes more gently; when the basalt fiber content is 1‰, the thermal conductivity coefficient reaches 0.0631W/(m•K); when the basalt fiber content is 1‰ - 5‰, its impact on the moisture content and the moisture absorption rate of fly ash foam glass is not obvious, with both of them maintained at about 0.35% and 15% respectively. When the basalt fiber content is 1‰ - 4‰, the compressive strength and the flexural strength of fly ash foam glass increase gradually. When the basalt fiber content is 4‰,the compressive strength and the flexural strength are 8.28 MPa and 0.75 MPa respectively; compared with those of the benchmark specimen,they are increased by 2.24 and 1.92 times.

Key words: basalt fiber; foam glass; mechanical property; heat conductivity coefficient