| 废弃混凝土再生混合砂砂浆性能正交试验研究 |
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| 引用本文： | 刘凤利,刘俊华,张承志. 废弃混凝土再生混合砂砂浆性能正交试验研究[J]. 建筑技术, 2014, 0(4): 341-345 |
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| 作者姓名： | 刘凤利 刘俊华 张承志 |
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| 作者单位： | [1] 河南大学材料与结构研究所,河南开封475004 [2] 开封大学土木建筑工程学院,河南开封475004 |
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| 基金项目： | 基金项目：河南省科技厅科技攻关项目（132102310113）;国家级大学生创新创业训练计划项目（201210475009）;河南省教育厅科学技术研究重点项目（138560136） |
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| 摘 要： | 利用废弃混凝土再生粗砂部分取代特细砂得到废弃混凝土再生混合砂。基于正交试验,研究了水胶比、废弃混凝土再生粗砂取代率和粉煤灰取代率对废弃混凝土再生混合砂砂浆稠度、抗压强度和抗折强度的影响。通过层次分析法得出了各因素、各水平的影响权重和优选方案,并进行了机理分析。研究表明:水胶比是影响废弃混凝土再生混合砂砂浆稠度、抗压强度和抗折强度的主要因素;粉煤灰掺入对废弃混凝土再生混合砂砂浆的强度有较大劣化作用。
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| 关 键 词： | 废弃混凝土 再生粗砂 特细砂 再生砂浆 正交试验 配合比 |
ORTHOGONAL TEST AND RESEARCH ON PERFORMANCE OF BLENDED SAND MORTAR RECYCLED FROM WASTE CONCRETE |
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| LIU Feng-li,LIU Jun-hua,ZHANG Cheng-zhi. ORTHOGONAL TEST AND RESEARCH ON PERFORMANCE OF BLENDED SAND MORTAR RECYCLED FROM WASTE CONCRETE[J]. Architecture Technology, 2014, 0(4): 341-345 |
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| Authors: | LIU Feng-li LIU Jun-hua ZHANG Cheng-zhi |
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| Affiliation: | 1. Institute of Material and Structure, Henan University, 475004, Kaifeng, He＇nan, China; 2. School of Civil Engineering and Architecture, Kaifeng University, 475004, Kaifeng, He＇nan, China ) |
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| Abstract: | Grit recycled from waste concrete is used to partially replace super-fine sand to produce blended sand. Based on orthogonal test, researches are carried out on ratio of water to cementitious material and influences of addition percentage of waste concrete-recycled grit and powdered coal ash on mortar consistency, compressive strength and folding strength of waste concrete-recycled blended sand. Influencing weight and preferential scheme for various factors at different levels are determined by using analytic hierarchy process, and relevant mechanism is analyzed. The research result shows that the ratio of water to cementitious material is the main factor influencing consistency, compressive strength and folding strength of waste concreterecycled blended sand mortar and that addition of powdered coal ash produces relatively severe adverse influence on the strength of waste concrete-recycled blended sand mortar |
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| Keywords: | waste concrete recycled grit super-find sand recycled mortar orthogonal test optimal mixing ratio |
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