An alternative approach to improve the compatibility of PCE in cement paste blend with coal gangue powder
作者机构：School of Civil EngineeringCentral South UniversityChangshaChina China Railway NO.9 Group CO.LTDShenyangChina National Engineering Research Center for High-Speed Railway Construction TechnologyChangshaChina Guangxi Key Laboratory of Disaster Prevention and Engineering SafetyGuangxi UniversityNanningChina
出 版 物：《Waste Disposal and Sustainable Energy》 (废弃物处置与可持续能源（英文）)
年 卷 期：2024年第6卷第1期
页 面：139-150页
核心收录：
学科分类：0820[工学-石油与天然气工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 08[工学] 081304[工学-建筑技术科学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0813[工学-建筑学]
基 金：National Key R&D Program of China,No.2022YFB2602604 Qiang Yuan,Systematic Project of Guangxi Key Laboratory of Disaster Prevention and Engineering Safety,No.2022ZDK027,Yi Tian
主 题：Coal gangue powder Polycarboxylate superplasticizer Compatibility Aggregation
摘 要：Coal gangue(CG)is an environmental waste that faces an urgent demand for disposal in *** utilization of CG in construction materials has broad application prospects and gained increasing ***,the poor compatibility of polycarboxylate superplasticizer(PCE)with CG powder hinders its efficiency in a wide range of ***,this paper attempts to improve the compatibility of PCE with CG powder in cement paste based on the regulation of aggregation and the adsorption behavior of *** light scattering(DLS)and fluorescence spectroscopy tests were carried out to understand the improved *** results indicated that the addition of CG powder increases the ionic strengths of the cement liquid phase,which makes PCE tend to aggregate at a lower concentration compared with no CG powder ***(CH_(3)COO)_(2)Cu is beneficial for enhancing the workability of cement paste by reducing PCE aggregation while maintaining the compressive strength of cement ***,(CH_(3)COO)_(2)Cu extra addition can be regarded as an effective and sustainable way to improve the workability of cement paste with CG powder.
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