中北大学学报（自然科学版）2025，Vol.46Issue(1)：124-132,9.DOI:10.62756/jnuc.issn.1673-3193.2023.04.0013
粉煤灰-偏高岭土基地质聚合物混凝土的性能研究
Study on Performance of Fly Ash-Metakaolin Base Geopolymer Concrete
摘要
Abstract
In order to solve the problem of weak early strength and slow growth in later strength of fly ash based geopolymer concrete,this paper designed and prepared solid waste based geopolymer concrete using metakaolin and fly ash as the main raw materials.Through orthogonal experiments,the effects of four factors,including water glass modulus,alkali content,ratio of fly ash to metakaolin,and water reducer dosage,on the performance and mechanical properties of geopolymer concrete were studied,and its mechanism was analyzed.The results show that the optimal ratio is sodium silicate percentage of 45%,fly ash to metakaolin of 1∶1,water cement ratio of 0.55,sand ratio of 0.5,water glass modulus of 1.4,and naphthalene based water reducer dosage of 1.2%.The concrete under this ratio has higher early strength and a larger growth rate in later strength compared with fly ash based geopolymer concrete,with a strength growth rate of 106%after 28 days.The increase in compressive strength of metakaolin geopolymer concrete is attributed to the geopolymerization reaction of quartz and mullite of metakaolin with water glass solution,resulting in the formation of amorphous network structured sodium zeolite(Na2[Al2Si3O10]·2H2O).关键词
粉煤灰/偏高岭土/地质聚合物混凝土/力学性能Key words
fly ash/metakaolin/geopolymer concrete/mechanical properties分类
交通工程引用本文复制引用
李文涛,王彩萍,曹红红,渠永平,焦纬洲,孙学良,李亚敏..粉煤灰-偏高岭土基地质聚合物混凝土的性能研究[J].中北大学学报（自然科学版）,2025,46(1):124-132,9.基金项目
山西省重点研发计划项目(202102090301024) （202102090301024）
山西省重点研发计划项目(202102090301025) （202102090301025）
山西省重点研发计划项目(2022ZDYF024) （2022ZDYF024）
长治市海绵示范城市建设相关技术研究 （）
山西省基础研究计划项目(20210302123049) （20210302123049）
山东省自然科学基金青年项目(ZR2022QE108) （ZR2022QE108）
