Effects of Portland cement addition on the early-age properties of solid-waste-based sulphoaluminate cement

作     者：Kun Wang Xujiang Wang Jingwei Li Wenlong Wang 

作者机构：National Engineering Laboratory for Reducing Emissions from Coal CombustionEngineering Research Center of Environmental Thermal Technology of Ministry of EducationShandong Key Laboratory of Energy Carbon Reduction and Resource UtilizationSchool of Energy and Power EngineeringShandong UniversityJinan 250061China 

出 版 物：《Waste Disposal and Sustainable Energy》 (废弃物处置与可持续能源（英文）)

年 卷 期：2020年第2卷第1期

页      面：47-53页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0814[工学-土木工程] 

基　　金：support of the National Key Research and Development Program of China(No.2017YFC0703100) Shandong Provincial Major Scientific and Technological Innovation Project(No.2019JZZY020306) 

主　　题：Portland cement Solid-waste-based sulphoaluminate cement Early-age strength Setting time 

摘      要：This paper investigated the effects of different proportions of Portland cement addition(0-20%)on the setting time and early-age strength of solid-waste-based sulphoaluminate *** mechanism of hydration process was analyzed by X-ray diffraction(XRD)*** was found that the incorporation of Portland cement could reduce the early-age strength of the composite cement,and shorten the setting *** the Portland cement reached 20%,the early-age strength of the composite cement was the lowest and the setting time was the *** XRD analysis demonstrated that the addition of Portland cement could accelerate the hydration process of the composite cement,and the more the Portland cement was added,the faster the hydration process of the composite cement was *** main reason is that the addition of Portland cement could increase the alkalinity of the composite cement and promote the hydration of anhydrous calcium *** study provides an important reference for the production of solid-waste-based composite cement.