Development of high volume rice husk ash alumino silicate composites

• 作 者: Ubolluk Rattanasak Prinya Chin
• 机 构: Department of Chemistry and Center for Innovation in Chemistry,Department of Civil Engineering
• 出 处: 矿物冶金与材料学报
• 发表日期: 2004年期
• 关键词: composite materials rice husk ash aluminium hydroxide boric acid alumino silicat

The development of high volume rice husk ash(RHA)altmtino silicate composites(ASC)was studied.RHA was used as the source of silica and aluminium in the ASC.The mass ratios of RHA:AI(OH)3 of 70:30 to 99:1 were tested.The results indicate that the ob-tained ASC mortars are not stable and disintegrate in water.Boric acid was introduced to the mixture to overcome this problem.Stable ASC mortars with high RHA:Al(OH)3 mass ratios of 90:10 to 97.5:2.5 were obtained with the use of boric acid and 1150C curing.The compres-sive strength of the mortar of 20 MPa was gained.The immersion test indicates that high volume RHA ASC mortars show good resistance in 3vol% H2SO4 solution,but is slightly less durable in 5wt% MgSO4 solution.