Study on Desulfurized Gypsum-steel Slag Composite Gelled Material Mechanics Properties

摘要

Using desulfurized gypsum and steel slag as raw material make desulfurized gypsum-steel slag composite gelled material, by adding cement, triethanolamine, aluminium sulfate, compound activator improve gelled material mechanics performance of materials. The experimental results show that when the proportion of desulfurized gypsum and steel slag for 85:15, mixing the compound activator that aluminum sulfate mixed quantity is 1%, cement mixed quantity is 3%, triethanolamine mixed quantity is 0.8%, sample's 14d flexural strength can reach 5.83 MPa and compressive strength can reach 16.14 MPa. SEM analysis shows that a lot of C-S-H gel structure in hydration products is conducive to improve desulfurized gypsum-the strength of steel slag gelled material, reach the purpose of improving gelled material mechanics performance.