橡胶颗粒对自密实混凝土性能的影响

发布时间：2018-04-30 19:10

本文选题：自密实混凝土 + 橡胶颗粒　；参考：《硅酸盐学报》2014年08期

【摘要】：研究了以橡胶颗粒等体积取代细骨料时,不同橡胶颗粒取代量对自密实混凝土的工作性、抗压强度、应力--应变曲线、抗冻性能、抗硫酸盐干湿循环性能以及电通量等性能的影响。结果表明:橡胶颗粒对新拌自密实混凝土工作性和硬化自密实混凝土性能均有较大影响;橡胶颗粒取代量在15%(体积分数,下同)以内时,橡胶颗粒的掺入可较好地改善新拌自密实混凝土工作性;橡胶颗粒可显著提高自密实混凝土的峰值应变以及抗离子渗透性能,橡胶颗粒取代量大于10%时,对自密实混凝土的强度、抗冻性能及抗硫酸盐干湿循环性能有明显不利影响。
[Abstract]:The workability, compressive strength, stress-strain curve and freezing resistance of self-compacting concrete with different amount of rubber particles replacing fine aggregate with rubber particles were studied. The effect of sulphate resistance to wet and dry cycle and electric flux. The results show that rubber particles have great influence on the workability of fresh self-compacting concrete and the properties of hardened self-compacting concrete, and when the substitution amount of rubber particles is less than 15 (volume fraction), The addition of rubber particles can improve the workability of fresh self-compacting concrete, and the peak strain and ion permeation resistance of self-compacting concrete can be improved by rubber particles, when the substitution amount of rubber particles is more than 10, It has a significant negative effect on the strength, frost resistance and sulfate resistance of self-compacting concrete.
【作者单位】：中南大学土木工程学院高速铁路建造技术国家工程实验室重载铁路工程结构教育部重点实验室;
【基金】：国家“973”计划课题(2013CB036201) 国家自然科学基金(51178467,51108463) 教育部新世纪优秀人才支持计划(NCET-10-0839)项目资助
【分类号】：TU528

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