| 含砖粒再生混凝土基本性能研究 |
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| 引用本文： | 安新正,牛薇,张亚飞,刘燕.含砖粒再生混凝土基本性能研究[J].河北工程大学学报,2017,34(1):30-33. |
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| 作者姓名： | 安新正 牛薇 张亚飞 刘燕 |
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| 作者单位： | 河北工程大学 土木工程学院, 河北 邯郸 056038;河北工程大学 土木工程学院, 河北 邯郸 056038;河北工程大学 土木工程学院, 河北 邯郸 056038;河北农业大学 城乡建设学院, 河北 保定 071001 |
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| 基金项目： | 河北省自然科学基金资助项目（E2015204111）；河北省科学技术研究与发展计划资助项目（15273609D） |
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| 摘 要： | 以再生砖粒取代率(0%~30%)和水胶比(0.40~0.50)为主要参数,通过工作性能与弹性模量试验,研究再生砖粒取代率和水胶比对再生混凝土工作性能及弹性模量的影响规律。结果表明:当水胶比相同时,再生混凝土的工作性能和弹性模量均随再生砖粒取代率的增加而降低,且在再生砖粒取代率为30%,水胶比为0.5时,再生混凝土弹性模量的降幅达17.62%;提出适合于含再生砖粒再生混凝土弹性模量估算的预测模型,该预测模型与试验值吻合较好。
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| 关 键 词： | 再生混凝土 再生砖粒 取代率 工作性能 弹性模量 |
| 收稿时间： | 2016/9/18 0:00:00 |
Study on basic performance of recycled concrete with brick grain |
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| Authors: | AN Xinzheng NIU Wei ZHANG Yafei and LIU Yan |
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| Affiliation: | College of Civil Engineering, Hebei University of Engineering, Hebei Handan, 056038, China;College of Civil Engineering, Hebei University of Engineering, Hebei Handan, 056038, China;College of Civil Engineering, Hebei University of Engineering, Hebei Handan, 056038, China;College of Urban and Rural Construction, Agricultural University of Hebei, Hebei Baoding 071001, China |
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| Abstract: | The influences of different water cement ratios (0.40~0.50)and different replacement rates (0%~30%)of recycled brick grain on the workability and elastic modulus of the recycled concrete are investigated based on the slumps experiment and elastic modulus experiment of those concrete mixtures. The test results indicated that with the increase of content of recycled brick grain, the workability and the elastic modulus become bad under the condition of the same water cement ratio. And when the replacement rate of recycled brick grain is 30% and water cement ratio is 0.50, the descend range is equal to 17.62% for its elastic modulus. Based on the test results, the prediction model of the elastic modulus is proposed for the recycled concrete with brick grain. |
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| Keywords: | recycled concrete recycled brick grain replacement rate workability elastic modulus |
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