| 粉煤灰预拌混凝土配合比设计用强度公式研究 |
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| 引用本文： | 张登祥,杨伟军.粉煤灰预拌混凝土配合比设计用强度公式研究[J].长沙交通学院学报,2008,24(1):22-26. |
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| 作者姓名： | 张登祥 杨伟军 |
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| 作者单位： | 1. 长沙理工大学,水利工程学院,湖南,长沙,410076
2. 长沙理工大学,桥梁与结构工程学院,湖南,长沙,410076 |
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| 基金项目： | 湖南省长沙市科研攻关项目 |
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| 摘 要： | 研究了粉煤灰（FA）掺量对不同胶水比的混凝土28d强度的影响规律．研究表明，粉煤灰预拌混凝土28d强度与胶水比具有很好的线性相关性，Bolomy公式对粉煤灰预拌混凝土是适用的，但公式中的回归系数需要修正；粉煤灰掺量对不同胶水比的混凝土28d强度的影响规律基本相同，提出了粉煤灰强度影响系数的概念和经验公式，并利用影响系数对Bolomy公式进行了修正．
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| 关 键 词： | 粉煤灰 预拌混凝土 配合比 强度公式 |
| 文章编号： | 1000-9779(2008)01-0022-05 |
| 修稿时间： | 2007年10月4日 |
Study on strength formula for the formulation of ready-mixed concrete with fly ash |
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| ZHANG Deng-xiang,YANG Wei-jun.Study on strength formula for the formulation of ready-mixed concrete with fly ash[J].Journal of Changsha Communications University,2008,24(1):22-26. |
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| Authors: | ZHANG Deng-xiang YANG Wei-jun |
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| Institution: | ZHANG Deng-xiang , YANG Wei-jun ( 1. College of Hydraulic Engineering, Changsha University of Science and Technology, Changsha 410076, China ; 2. College of Bridge and Structure Engineering, Changsha University of Science and Technology, Changsha 410076, China) |
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| Abstract: | Fly ash is the common ready-mixed concrete admixture, this paper has systematically studied the influence of the fly ash(FA) content on different water-binder ratio concrete 28 d strength.All the results show that 28 d strength of fly ash ready-mixed concrete strength and water-binder ratio had a good linear correlation,Bolomy's formula was applicable to fly ash ready-mixed concrete,but the regression coefficient in the formula needed to be amended.The influence of the fly ash(FA) content on different water-binder ratio concrete 28 d strength was basically the same,this paper put forward the notion and empirical formula of influencing coefficient in fly ash strength,and amend Bolomy's formula by utilizing influencing coefficient. |
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| Keywords: | fly ash ready mixed concrete mixing ratio Strength formula |
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