基于正交试验的矿渣-粉煤灰地聚物混凝土力学性能研究  

Mechanical Properties of Slag-fly Ash Geopolymer Concrete Based on Orthogonal Test

作　　者：姜天华[1] 汪文星 阮英 莫定聪 李万绪 郑智敏 黄燕南 JIANG Tianhua;WANG Wenxing;RUAN Ying;MO Dingcong;LI Wanxu;ZHENG Zhimin;HUANG Yannan(School of Urban Construction,Wuhan University of Science and Technology,Wuhan,Hubei 430065,China;Wuhan Qingshan District Water Engineering Construction Quality and Safety Supervision and Management Station,Wuhan,Hubei 430080,China;Fujian Fanshi Construction Group Co.,Ltd.,Putian,Fujian 351100,China;Yiyao(Fujian)Construction Co.,Ltd.,Putian,Fujian 351100,China)

机构地区：[1]武汉科技大学城市建设学院,湖北武汉430065 [2]武汉市青山区水务工程建设质量安全监督管理站,湖北武汉430080 [3]福建省凡士建设集团有限公司,福建莆田351100 [4]亿耀(福建)建设有限公司,福建莆田351100

出　　处：《水利与建筑工程学报》2025年第1期178-184,214,共8页Journal of Water Resources and Architectural Engineering

基　　金：湖北省建设科技计划项目(厅头[2023]1656号-159、JK2024108);福建省住建行业建设科技研究开发项目(2022-K-16;2022-K-18)。

摘　　要：为深入探究矿渣-粉煤灰地聚物混凝土的力学性能,利用正交试验方法研究矿灰比、水胶比和水玻璃模数对矿渣-粉煤灰地聚物混凝土抗压强度、轴心抗压强度、抗折强度和折压比的影响。在试验基础上建立矿渣-粉煤灰地聚物混凝土应力-应变本构模型。研究结果表明:矿渣粉含量的增加可以显著改善混凝土的力学性能,但含量过多会降低其韧性;碱溶液含量增加,抗压强度和轴心抗压强度先提升后下降,抗折强度提升较小,折压比先减小后增大;水玻璃模数增加,3种力学性能均先提升后下降,折压比先减小后缓慢增大。In order to further explore the mechanical properties of slag-fly ash geopolymer concrete,the orthogonal test method was used to analyze the effects of slag-fly ash ratio,water-binder ratio and sodium silicate modulus on the compressive strength,axial compressive strength,flexural strength and bend-press ratio of slag-fly ash geopolymer concrete.Based on the experiments,the stress-strain constitutive model of slag-fly ash geopolymer concrete was established.The results are as follows.The increase in slag powder content can significantly improve the mechanical properties of concrete,but excessive content will reduce its toughness.As the alkali solution content increases,the compressive strength and axial compressive strength first increase and then decrease,the flexural strength increases slightly,and the bend-press ratio first decreases and then increases.As the modulus of sodium silicate increases,the three mechanical properties first increase and then decrease,and the bend-press ratio first decreases and then slowly increases.

关 键 词：地聚物混凝土 正交试验 基本力学性能 折压比 应力应变曲线 本构模型 

分 类 号：TU528.41[建筑科学—建筑技术科学]