碳酸钙晶须对风积沙混凝土力学性能影响研究

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中图分类号：TU528；S277.7 文献标志码：A 文章编号：1000-582X（2026）01-106-09

引用格式：，，，等.碳酸钙晶须对风积沙混凝土力学性能影响研究[J].重庆大学学报，2026，49（1）：106-114.

Abstract： To improve the utilization efficiency of aeolian sand，this study investigates the influence of varying calciumcarbonate whisker volume fractions on the compressiveand spliting tensile strengths of aeolian sand concrete.Scanning electron microscopy （SEM） and nuclear magnetic resonance （NMR） were employed to examine the interfacial bonding between whiskersand cement paste andto elucidate the strengthening mechanism. Based on the experimental results，a theoretical model of relationships among compressive strength， spliting tensile strength and curing age was established.The findings show that the incorporation of an appropriate amount of calcium carbonate whiskers significantly improves pore structure and mechanical performance.When the aeolian sand content is 60% ，the optimal whisker volume fractions for compressive strength and splitting tensile strength are 0.15% and 0.20% ， respectively. The proposed predictive model aligns well with the experimental data and effectively predicts strength development with age.

Keywords： calcium carbonate whiskers; aeolian sand concrete; compressive strength; spliting tensile strength; SEM;NMR;predictive mode

在沙漠地区农业和工矿业开发建设过程中，如何利用沙漠地区丰富的风积沙资源制备工程所需的混凝土材料具有重要意义。（剩余11275字）