| 等效龄期法在大体积混凝土性能预测中的准确性 |
| 张增起, 石梦晓, 王强, 崔强 |
| 清华大学 土木工程系, 北京 100084 |
| Accuracy of equivalent age method for predicting mass concrete properties |
| ZHANG Zengqi, SHI Mengxiao, WANG Qiang, CUI Qiang |
| Department of Civil Engineering, Tsinghua University, Beijing 100084, China |
摘要:
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| 摘要为了探讨等效龄期法在预测大体积混凝土力学性能中的应用，该文共设计了5组混凝土配合比和2种养护方式。通过绝热温升实验确定了每组配合比的匹配养护温度，对比了温度匹配养护混凝土的力学性能和等效龄期法换算的标准养护的混凝土力学性能，结果表明：通过等效龄期法推算的混凝土力学性能高于温度匹配养护混凝土的力学性能，等效龄期法在大体积混凝土性能预测中有局限性。 | |||
| 关键词 ：混凝土,绝热温升,等效龄期法,抗压强度,弹性模量 | |||
| Abstract：The accuracy of the equivalent age method on property prediction of mass concrete was evaluated for five mixture proportions and two kinds of curing conditions. The concrete specimens were cured using standard curing or matching curing based on adiabatic temperature rise test results. The results show that the calculated concrete properties predicted by the equivalent age method were much higher than the measured data for concrete prepared using matching curing. Thus, the equivalent age method cannot accurately predict the properties of mass concrete. | |||
| Key words：concreteadiabatic temperature riseequivalent agecompressive strengthelastic modulus | |||
| 收稿日期: 2015-11-24 出版日期: 2016-08-23 | |||
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| 通讯作者:王强,副教授,E-mail:w-qiang@tsinghua.edu.cnE-mail: w-qiang@tsinghua.edu.cn | |||
| 引用本文: |
| 张增起, 石梦晓, 王强, 崔强. 等效龄期法在大体积混凝土性能预测中的准确性[J]. 清华大学学报（自然科学版）, 2016, 56(8): 806-810. ZHANG Zengqi, SHI Mengxiao, WANG Qiang, CUI Qiang. Accuracy of equivalent age method for predicting mass concrete properties. Journal of Tsinghua University(Science and Technology), 2016, 56(8): 806-810. |
| 链接本文: |
| http://jst.tsinghuajournals.com/CN/10.16511/j.cnki.qhdxxb.2016.25.018或 http://jst.tsinghuajournals.com/CN/Y2016/V56/I8/806 |
图表:
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| 表1 胶凝材料的化学组成(质量分数) |
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| 表2 混凝土配合比(kg/m3) |
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| 图1 养护龄期与等效龄期关系 |
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| 表3 抗压强度对比结果 |
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| 表4 弹性模量对比结果 |
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