碱激发黄河淤泥生态砌块的力学性能及固化机理研究  

Study on mechanical properties and curing mechanism of alkaline activated Yellow River silt ecological blocks

作　　者：刘成才 LIU Chengcai(School of Civil Engineering,Zhengzhou university of Technology,Zhengzhou 450044,China;Civil Engineering Evaluation Technology Research Center,Zhengzhou 450044,China)

机构地区：[1]郑州工程技术学院土木工程学院,河南郑州450044 [2]土木工程评价技术研究中心,河南郑州450044

出　　处：《混凝土与水泥制品》2025年第2期42-46,52,共6页China Concrete and Cement Products

基　　金：2023年度河南省重点研发与推广专项(科技攻关)项目(232102321073);2022年度郑州工程技术学院技术研发推广与转化基金项目(zjz202204);2023年河南省高等学校重点科研项目(23B560017)。

摘　　要：采用静压成型法,以黄河淤泥为主要原材料,添加一定量的水泥和碱激发剂(生石灰、NaOH、水玻璃、CaCl_(2))制备了生态砌块,研究了水泥掺量(6%~30%)、碱激发剂单掺和复掺对生态砌块抗压强度的影响,并进行了微观分析。结果表明:随着水泥掺量的增加,试块的抗压强度增大;单掺适量生石灰、NaOH、水玻璃、CaCl_(2)均能有效提高试块的抗压强度;以上碱激发剂适量两两复掺可有效提高试块的抗压强度;生态砌块的抗压强度与混合料的化学成分、活性以及胶凝物质的数量、矿物组成、分布状态等有关。Ecological blocks were prepared using static pressure molding method with Yellow River silt as the main raw material,and a certain content of cement and alkali activators(quicklime,NaOH,water glass,CaCl_(2))were added.The effects of content of cement(6%~30%)and different alkali activators on the compressive strength of ecological blocks were studied,and microscopic analysis was conducted.The results show that with the increase of content of cement,the compressive strength of the test block increases.Single addition of appropriate content of quicklime,NaOH,water glass or CaCl_(2) can effectively improve the compressive strength of the test block.Compound addition of appropriate content of different alkaline activators can effectively improve the compressive strength of the test block.The compressive strength of ecological blocks is related to the chemical composition and activity of the mixture,and quantity,mineral composition,and distribution status of cementitious substances.

关 键 词：黄河淤泥 生态砌块 碱激发剂 抗压强度 固化机理 

分 类 号：TU522.3[建筑科学—建筑技术科学]