摘要
本文探索了粉煤灰回填材料在化工废石膏、矿物外加剂、激发剂和高效减水剂存在同时的强度发展规律、体积稳定性、耐水性等。结果表明 ,粉煤灰回填材料具有较高的力学性能 (≥ 8MPa)、较好的耐水性和体积稳定性 (膨胀系数≤ 0 0 2 % )。该材料可广泛应用于污水管、输热管。
In this paper,the law of strength development,volume stability and water resistance of fly ash backfill with the coexistence of waste chemical gypsum,mineral additives,activator and high-efficiency water reducer are explored.The results show that fly ash backfill possesses a rather high mechanical property(≥8MPa),good water resistance and volume stability (The expansion coefficient is ≤0 02%).This material can be widely used to backfill trenches for sewage pipes,heat delivery pipes,water supply pipes,etc.
出处
《房材与应用》
2000年第1期20-22,共3页
Housing Materials & Applications
关键词
粉煤灰
回填
强度
耐水性
路基材料
Fly ash
Backfill
Strength
Water resistance
Volume stability
