| 用新成熟度概念预测混凝土早期强度应用研究 |
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| 引用本文： | 刘建立,覃维祖,李飞.用新成熟度概念预测混凝土早期强度应用研究[J].施工技术,2006,35(8):68-70. |
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| 作者姓名： | 刘建立 覃维祖 李飞 |
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| 作者单位： | 清华大学,北京,100084 |
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| 摘 要： | 依据美国ASTM C1074标准试验方法,初步研究了基于Arrhenius方程新成熟度概念中的重要参数———表观活化能随混凝土水灰比变化的规律;根据计算所得表观活化能以及工程实测混凝土温度发展历程,计算了水灰比为0.4、0.5混凝土的等效龄期,与通过试验建立的强度-龄期拟合公式预测强度值相比较,进行了应用该方法有效性的验证。
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| 关 键 词： | 混凝土 等效龄期 表观活化能 早期强度 |
| 文章编号： | 1002-8498(2006)08-0068-03 |
| 修稿时间： | 2006年3月13日 |
Study on the Application of New Mature Method to Predict Concrete Strength at Early-age |
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| LIU Jian-li,QIN Wei-zu,LI Fei.Study on the Application of New Mature Method to Predict Concrete Strength at Early-age[J].Construction Technology,2006,35(8):68-70. |
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| Authors: | LIU Jian-li QIN Wei-zu LI Fei |
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| Abstract: | According to standard ASTM C1074,a study on the preliminary rule of an important parameter: activation energy in new mature method based on Arrhenius Equation which vary with W/C,is presented in this paper.Then due to the calculated activation energy value and the concrete temperature history from practical project,authors compute the equivalent age of concrete with W/C from 0.4 to 0.5.Combined with the preset regression analysis equation of strength-age,authors predict the strength value,which is compared with the measured value aiming at confirming the validation of the method. |
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| Keywords: | concrete equivalent age activation energy early-age strength |
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