硅酸盐通报2024，Vol.43Issue(7)：2539-2547,9.
自燃煤矸石基地质聚合物低强度注浆材料的制备及其微观分析
Preparation and Microanalysis of Geopolymer Low-Strength Grouting Material Based on Self-Combusting Gangue
摘要
Abstract
With self-combusting gangue as raw material,fly ash and low dosage of composite Portland cement P·C 42.5 as supplementary materials,geopolymer low-strength grouting materials based on self-combusting gangue were prepared by the excitation of calcium carbide slag,and the samples were microscopically analyzed.The experimental results show that when the amount of calcium carbide slag mixing(9.65％,mass fraction)is the same,the compressive strength development of samples is more favorable when the mass ratio of gangue,fly ash and cement is set to 5∶3∶2 or 5∶2∶3,the geopolymerization of the sample system is higher and the compressive strength(55 d)increases by 70％～86％compared to the samples with mass ratio of 7∶2∶1 and 7∶1∶2.At the same time,compared with the samples without adding desulfurization gypsum,adding 20％(mass fraction)desulfurization gypsum greatly improves the compressive strength of samples during the whole process of curing,and the compressive strength(55 d)increases by 21％～50％.The combination of correlation,XRD,SEM and FTIR analyses indicate that the main hydration products of samples are ettringite,C-S-H gel,C-A-S-H amorphous gel and others,and the compressive strength of samples is mainly derived from the C-A-S-H amorphous gels produced by geopolymerization.关键词
自燃煤矸石/地质聚合物/注浆材料/水化硅铝酸钙/电石渣/微观分析Key words
self-combusting gangue/geopolymer/grouting material/C-A-S-H/calcium carbide slag/microanalysis分类
建筑与水利引用本文复制引用
吴求刚,赵恒,刘威,王新富,王彦君,何建国,章梅,朱孛..自燃煤矸石基地质聚合物低强度注浆材料的制备及其微观分析[J].硅酸盐通报,2024,43(7):2539-2547,9.基金项目
徐州市科技创新重点研发计划(社会发展)项目(KC23325) （社会发展）
中国煤炭地质总局重大科技专项(揭榜挂帅)项目(ZMKJ-2023-JBGS-02-02) （揭榜挂帅）
中能化江苏地质矿产设计研究院有限公司科技创新基金(ZNH-2022-B) （ZNH-2022-B）
