硅酸盐通报2025，Vol.44Issue(12)：4384-4394,11.DOI:10.16552/j.cnki.issn1001-1625.2025.0522
页岩陶粒对高延性地聚物复合材料性能的影响
Influence of Shale Ceramsite on Properties of High Ductility Geopolymer Composites
摘要
Abstract
Shale ceramsite(SC),functioning as a lightweight,porous aggregate with moderate strength,serves as intentional defects in geopolymer composites to induce saturated cracking behavior within the matrix.This study designed and fabricated 9 groups of high ductility geopolymer composite(HDGC)specimens with varying SC content and particle size distributions.Uniaxial compression tests,tensile tests,scanning electron microscopy,and energy-dispersive spectroscopy analyses were conducted at different curing ages to investigate the effects of SC content and particle size distribution on HDGC's compressive strength,tensile strength,tensile strain,crack morphology,and microstructure.Results show that there is an interface reaction between SC and the matrix,and as the SC particle size decreases,the microstructure of SC-matrix interfacet is more compact.With the increase of SC content,the tensile strength and tensile strain of HDGC initially increase and then decreast.Whereas these properties generally decrease with the increase of SC particle size.Notably,the tensile strength and ultimate tensile strain of HDGC with 40％(mass fraction)SC and particle size distribution of 0.15～＜0.30 mm achieve 5.8 MPa and 9.3％,respectively.This study can provide a theoretical reference for the design and application of green high-performance geopolymer composites.关键词
高延性地聚物/页岩陶粒/抗压强度/抗拉强度/微观结构/界面过渡区Key words
high ductility geopolymer/shale ceramsite/compressive strength/tensile strength/microstructure/interfacial transition zone分类
建筑与水利引用本文复制引用
WANG Zhaohui,WANG Shanwei,WANG Jie,HAN Yantong,DAI Haoyu..页岩陶粒对高延性地聚物复合材料性能的影响[J].硅酸盐通报,2025,44(12):4384-4394,11.基金项目
山东省自然科学基金资助项目(ZR2024QE014) （ZR2024QE014）
国家级大学生创新训练项目(202410447010) （202410447010）
