沙漠沙地聚合物纤维混凝土参数优化及抗压试验研究  

Parameter Optimization and Compressive Test Study of Dune Sand Engineered Geopolymer Composite

作　　者：张天贺 任庆新 王庆贺 路林翰 ZHANG Tianhe;REN Qingxin;WANG Qinghe;LU Linhan(School of Civil Engineering,Shenyang Jianzhu University,Shenyang,China,110168;School of Transportation,Foshan University,Foshan,China,528225;School of Management,Shenyang Jianzhu University,Shenyang,China,110168)

机构地区：[1]沈阳建筑大学土木工程学院,辽宁沈阳110168 [2]佛山大学交通与土木建筑学院,广东佛山528225 [3]沈阳建筑大学管理学院,辽宁沈阳110168

出　　处：《沈阳建筑大学学报（自然科学版）》2024年第5期930-937,共8页Journal of Shenyang Jianzhu University：Natural Science

基　　金：国家自然科学基金项目(52078309);沈阳市科技计划项目(21-108-9-34)。

摘　　要：目的确定沙漠沙地聚合物混凝土最佳配合比,为沙漠沙EGC的研究和工程应用提供一定思路。方法进行12组沙漠沙EGC的立方体抗压强度试验和4组沙漠沙EGC柱轴心受压试验,量化了沙漠沙取代率、NaOH溶液浓度、水玻璃模数、PE纤维掺量对沙漠沙EGC抗压强度的影响;进一步分析了轴心受压应力-应变曲线,并提出适用于沙漠沙EGC的本构关系模型。结果EGC最大抗压强度在沙漠沙取代率50%时取得;而全沙漠沙取代率下,NaOH溶液浓度取20%,水玻璃模数取1.1,PE纤维体积掺量取2%,为沙漠沙EGC最优配合比。结论掺入沙漠沙制备EGC方法是可行的;提出的轴心受压本构模型可较好预测沙漠沙EGC单轴受压行为。To determine the optimal mix of dune sand in Engineered Geopolymer Composite(EGC),this study provided insights for subsequent research and engineering applications involving dune sand EGC.Twelve groups of cubic specimens of dune sand EGC underwent compression tests,and four groups of axial compression tests of dune sand EGC were conducted.The observed failure modes and recorded compressive strengths were analyzed.The effects of dune sand replacement ratio,NaOH solution concentration,water-glass modulus,and PE fiber content on the compressive strength of dune sand EGC were quantified.Furthermore,further analysis was conducted on the stress-strain curves under axial compression,and a constitutive relationship model suitable for dune sand EGC was proposed.The maximum compressive strength of EGC was achieved when the dune sand replacement ratio was 50%.Under complete dune sand replacement,a NaOH solution concentration of 20%,a water glass modulus of 1.1,and a PE fiber content of 2%were selected as the optimal combination for dune sand EGC compressive strength.The study affirmed the feasibility of preparing EGC by incorporating a specific proportion of dune sand,and this proposed constitutive model accurately predicts the uniaxial compressive behavior of dune sand EGC.

关 键 词：地聚物复合材料 沙漠沙 地聚物 抗压强度 单轴受压本构模型 纤维 

分 类 号：TU528[建筑科学—建筑技术科学]