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玻璃砂喷射混凝土性能研究
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作者单位:

1.山东省交通工程监理咨询有限公司;2.山东交通学院 交通土建工程学院

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中图分类号:

U416.216

基金项目:

山东省交通运输厅科技计划项目(2024B108-01)


Research on the properties of glass sand shotcrete
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Affiliation:

1.Shandong Province Transportation Engineering Supervision and Consultation Co,Jinan Shandong;2.Civil Engineering department,Shandong Jiaotong University,Jinan Shandong;3.School of Civil Engineering, Shandong Jiaotong University

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    摘要:

    为研究玻璃砂对喷射混凝土性能的影响,采用玻璃砂替代天然砂制备了喷射混凝土。通过抗压强度试验、劈裂抗拉强度试验、干燥收缩试验和氯离子侵蚀试验,分析了不同掺量的玻璃砂对喷射混凝土强度、收缩性和耐久性的影响。结果表明:① 50%的玻璃砂替代率对喷射混凝土强度的影响最小,相较于对照组其28 d抗压强度仅降低了2.19%;② 玻璃砂可以改善喷射混凝土的干缩性能,随着玻璃砂的替代率从10%增加到50%,喷射混凝土的28 d干燥收缩率减小了27.7%;③ 当玻璃砂的替代率为50%时,喷射混凝土侵蚀120 d 的抗压强度损失率降低了17.65%。本研究为玻璃砂在喷射混凝土中的应用和推广提供理论支持,为废旧玻璃的资源利用提供解决方案。

    Abstract:

    In order to study the effect of glass sand on the properties of shotcrete, shotcrete was prepared by using glass sand instead of natural sand. Through the compressive strength test, splitting tensile strength test, drying shrinkage test and chloride ion erosion test, the effects of different amounts of glass sand on the strength, shrinkage and durability of shotcrete were analyzed. The results show that: ① The 50% glass sand replacement rate has the least effect on the strength of shotcrete, and its 28 d compressive strength is only reduced by 2.19% compared with the control group. ② Glass sand can improve the shrinkage performance of shotcrete. As the replacement rate of glass sand increases from 10% to 50%, the 28 d drying shrinkage of shotcrete decreases by 27.7%. ③ When the replacement rate of glass sand is 50%, the compressive strength loss rate of shotcrete erosion for 120 d is reduced by 17.65%. This study provides theoretical support for the application and promotion of glass sand in shotcrete and provides a solution for the resource utilization of waste glass.

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  • 收稿日期:2024-11-24
  • 最后修改日期:2025-04-01
  • 录用日期:2025-04-25
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