骨料替代率对玻璃纤维再生混凝土力学性能的影响

发布时间：2018-05-06 20:04

  本文选题：再生混凝土 + 骨料替代率　； 参考：《混凝土》2017年04期

【摘要】：再生混凝土是一种资源节约型混凝土,再生粗骨料替代率的选择是决定再生混凝土力学性能的关键因素,试验通过设计5个不同的替代率,研究了再生骨料替代率对玻璃纤维再生混凝土力学性能的影响,并且在同一骨料替代率(50%)时研究了不同纤维掺量对再生混凝土保温性能的影响。结果表明:随着再生粗骨料替代率的增加,玻璃纤维再生混凝土的抗压强度和劈拉强度整体呈现下降趋势;不同取代率混凝土抗压强度均达到设计强度;再生粗骨料最优替代率为50%;混凝土的导热系数随玻璃纤维掺量的提高逐渐降低。
[Abstract]:Recycled concrete is a kind of resource-saving concrete. The selection of the replacement rate of recycled coarse aggregate is the key factor to determine the mechanical properties of recycled concrete. The influence of recycled aggregate substitution ratio on the mechanical properties of recycled glass fiber reinforced concrete was studied, and the influence of different fiber content on the thermal insulation performance of recycled concrete was studied at the same aggregate replacement ratio of 50%. The results show that the compressive strength and splitting tensile strength of recycled glass fiber reinforced concrete decrease with the increase of the replacement ratio of recycled coarse aggregate, and the compressive strength of concrete with different replacement ratio reaches the design strength. The optimum substitution rate of recycled coarse aggregate is 50 and the thermal conductivity of concrete decreases with the increase of glass fiber content.
【作者单位】： 成都理工大学工程技术学院;
【基金】：国家自然科学基金资助项目(11375055) 四川省教育厅科研项目(16ZB0401) 乐山市科技局项目(14GZD045)
【分类号】：TU528.572
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本文编号：1853684