河南城建学院学报2026，Vol.35Issue(2)：1-7,7.DOI:10.14140/j.cnki.hncjxb.2026.02.001
基于改性煤矸石粗骨料的高性能混凝土研究
High-performance concrete using modified coal gangue as coarse aggregate
摘要
Abstract
In view of the defects of low matrix strength of undisturbed coal gangue,the slurry modification test of coal gangue was studied.The optimal modification scheme was determined by testing the influence of different slurry coating parameters on the performance of the test block,then the modified coal gangue high-performance concrete(MCHPC)was prepared and its durability was studied.The influence of the re-placement rate of modified coal gangue coarse aggregate on the sulfate resistance of MCHPC was analyzed.The durability of MCHPC was evaluated by the change rate of compressive strength,corrosion resistance co-efficient and dynamic elastic modulus.It was concluded that 50%replacement rate partially enhanced the sulfate resistance of MCHPC.When the replacement rate increased to 100%,the compressive strength and dynamic elastic modulus of MCHPC decreased by 11.5%and 4.2%compared with the 50%group.关键词
裹浆改性/煤矸石/高性能混凝土/力学性能/耐久性试验Key words
coating modification/coal gangue/high performance concrete/mechanical properties/durabil-ity test分类
建筑与水利引用本文复制引用
周江龙,蔡海兵,胡时,陈子静..基于改性煤矸石粗骨料的高性能混凝土研究[J].河南城建学院学报,2026,35(2):1-7,7.基金项目
国家自然科学基金面上项目(52378384) （52378384）
