| 大掺量粉煤灰及塑钢纤维混凝土断裂性能研究 |
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| 引用本文： | 程大伟,穆胜利. 大掺量粉煤灰及塑钢纤维混凝土断裂性能研究[J]. 人民长江, 2011, 42(17): 59-62 |
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| 作者姓名： | 程大伟 穆胜利 |
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| 作者单位： | 1. 西北农林科技大学水利与建筑工程学院,陕西杨凌,712100
2. 中材地质工程勘察研究院,北京,100102 |
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| 摘 要： | 断裂韧度是衡量大掺量粉煤灰混凝土断裂性能的重要参数，在粉煤灰混凝土中掺入纤维能够改善其脆性大和易开裂的缺点。利用三点弯曲梁试验，通过控制异型塑钢纤维体积率、灰胶比和水胶比3个参数，分别考察它们对大掺量粉煤灰混凝土断裂韧度的影响。研究表明，大掺量粉煤灰混凝土的断裂韧度随异型塑钢纤维体积率的增加而增大，随灰胶比、水胶比增大而减小。
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| 关 键 词： | 大掺量粉煤灰混凝土 断裂韧度 纤维体积率 灰胶比 水胶比 |
Research on fracture toughness of concrete with large amount of fly ash and PP fiber |
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| CHENG Dawei,MU Shengli. Research on fracture toughness of concrete with large amount of fly ash and PP fiber[J]. Yangtze River, 2011, 42(17): 59-62 |
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| Authors: | CHENG Dawei MU Shengli |
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| Affiliation: | CHENG Dawei1,MU Shengli2(1.College of Water Resources and Architectural Engineering,Northwest A&F University,Yangling 712100,China,2.Sinoma Geological Engineering Investigation Institute,Beijing 100102,China) |
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| Abstract: | Fracture toughness is one of the important parameters to evaluate the concrete fracture properties.The incorporation of fiber in fly ash concrete solves the problems such as large brittleness and easy cracking.The influence of shaped PP fiber volume rate,water-cement ratio and fly ash-cement ratio on fracture toughness of concrete with large amount of fly ash was studied by three-point bending beam experiment.The research indicated that the fracture toughness of concrete with large amount of fly ash increas... |
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| Keywords: | concrete with large amount of fly ash fracture toughness shaped PP fiber volume rate fly ash-cement ratio water-cement ratio |
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