二水磷石膏粉煤灰复合胶结材研究

Study on the Composite Binder of the Dihydrate of Phosgypsum and Fly Ash

二水磷石膏粉煤灰复合胶结材 (PGF)是直接将未经处理的磷石膏通过加入粉煤灰和激发剂改性制得的新型胶结材。本文介绍胶结材的适宜配比、养护方式与制度、性能等 ,通过XRD、SEM微观分析 ,结合水化热、pH值、孔结构测定及宏观力学性能测试 ,对PGF适宜的碱激发、强度发展与养护。

The composite binder of dihydrate phosgypsum and fly ash (PGF) is a new kind of binder made from unpretreated phosgypsum, fly ash and activator. By means of XRD and SEM, this paper studies the proper proportion, curing method and system, and properties of PGF, as well as mechanical property tests and hydration heat, pH and pore structure determination . The appropriate alkali activation, strength development and curing, and the cause of improvement of waterproof property of PGF are analyzed as well.