Preparation and application research of dry desulfurization ash based cementitious materials
TANG Ronghui
CHEN Hong
XU Canfeng
GAO Panfeng
SU Qingfa
FU Haiyan
WANG Jianchun
Abstract：In this paper,dry desulfurization ash is selected as the main raw material to prepare dry desulfurization ash-based cementitious materials.The orthogonal experimental design was used to investigate its optimal mix ratio and evaluate its application in cured silt.The results show that:when the slag powder/dry desulfurization ash is 2:1,with 3％lime dosage,15％cement,9％desulfurization gypsum,and using LCA as exciter,the 28 d compressive strength of the cementitious material is 41.25 MPa,and the main hydration products are AFt,C-S-H gel,AFm and so on.The strength of the cured sludge is better than adding the lime when using the cementitious materials,which can satisfy the strength requirements for the base layer of secondary and lower sec-ondary roads in the"Technical Rules for Construction of Highway Pavement Base Layer"JTG/T F20-2015.
Keywords：dry desulfurization ashorthogonal experimentcementitious materialsexciterssludge curing
Publication Date：2025-11-25
Online Publishing Date：2025-12-15(First online date of this platform, not the publication date of the document)
Pages：4( 91-94 )