Please wait a minute...
 首页  期刊介绍 期刊订阅 联系我们 横山亮次奖 百年刊庆
 
最新录用  |  预出版  |  当期目录  |  过刊浏览  |  阅读排行  |  下载排行  |  引用排行  |  横山亮次奖  |  百年刊庆
清华大学学报(自然科学版)  2016, Vol. 56 Issue (8): 806-810    DOI: 10.16511/j.cnki.qhdxxb.2016.25.018
  土木工程 本期目录 | 过刊浏览 | 高级检索 |
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
全文: PDF(1027 KB)  
输出: BibTeX | EndNote (RIS)      
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。
服务
把本文推荐给朋友
加入引用管理器
E-mail Alert
RSS
作者相关文章
张增起
石梦晓
王强
崔强
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 wordsconcrete    adiabatic temperature rise    equivalent age    compressive strength    elastic modulus
收稿日期: 2015-11-24      出版日期: 2016-08-23
ZTFLH:  TU528  
通讯作者: 王强,副教授,E-mail:w-qiang@tsinghua.edu.cn     E-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
  表1 胶凝材料的化学组成(质量分数)
  表2 混凝土配合比(kg/m3)
  图1 养护龄期与等效龄期关系
  表3 抗压强度对比结果
  表4 弹性模量对比结果
[1] 阎培渝,郑峰.水泥基材料的水化动力学模型[J].硅酸盐学报,2006,34(5):555-559.YAN Peiyu,ZHENG Feng.Kinetics model for the hydration mechanism of cementitious materials[J].Journal of the Chinese Ceramic Society,2006,34(5):555-559.(in Chinese)
[2] HAN Fanghui,ZHANG Zengqi,WANG Dongmin,et al.Hydration heat evolution and kinetics of blended cement containing steel slag at different temperatures[J].Thermochimica Acta,2015,605:43-51.
[3] HAN Fanghui,ZHANG Zengqi,WANG Dongmin,et al.Hydration kinetics of composite binder containing slag at different temperatures[J].Journal of Thermal Analysis and Calorimetry,2015,121(2):1-13.
[4] Klemczak B A.Modeling thermal-shrinkage stresses in early age massive concrete structures-Comparative study of basic models[J].Archives of Civil and Mechanical Engineering,2014,14(4):721-733.
[5] Nurse R W.Steam curing of concrete[J].Magazine of Concrete Research,1949,1(2):79-88.
[6] Saul A G A.Principles underlying the steam curing of concrete at atmospheric pressure[J].Magazine of Concrete Research,1951,2(6):127-140.
[7] Hansen P F,Pedersen E J.Maturity computer for controlled curing and hardening of concrete strength[J].Nordisk Betong,1977,1(19):19-34.
[8] 侯东伟,张君,陈浩宇,等.干燥与潮湿环境下混凝土抗压强度和弹性模量发展分析[J].水利学报,2012,43(2):198-208.HOU Dongwei,ZHANG Jun,CHEN Haoyu,et al.Development of strength and elastic modulus of concrete under moisture and drying curing conditions[J].Journal of Hydraulic Engineering,2012,43(2):198-208.(in Chinese)
[9] Han S H,Kim J K,Park Y D.Prediction of compressive strength of fly ash concrete by new apparent activation energy function[J].Cement and Concrete Research,2003,33(7):965-971.
[10] Zunino F,Castro J,Lopez M.Thermo-mechanical assessment of concrete microcracking damage due to early-age temperature rise[J].Construction and Building Materials,2015,81:140-153.
[11] Yikici T A,Chen H L.Use of maturity method to estimate compressive strength of mass concrete[J].Construction and Building Materials,2015,95:802-812.
[12] Kim J K,Han S H,Lee K M.Estimation of compressive strength by a new apparent activation energy function[J].Cement and Concrete Research,2001,31(2):217-225.
[13] Krstulovi? R,Dabic? P.A conceptual model of the cement hydration process[J].Cement and Concrete Research,2000,30(5):693-698.
[14] LI Hua,LIU Jiaping,WANG Yujiang,et al.Deformation and cracking modeling for early-age sidewall concrete based on the multi-field coupling mechanism[J].Construction and Building Materials,2015,88:84-93.
[15] LIN Feng,Meyer C.Hydration kinetics modeling of Portland cement considering the effects of curing temperature and applied pressure[J].Cement and Concrete Research,2009,39(4):255-265.
[1] 刘晖, 何铭华, 辛克贵, 郭佳, 刘文. 带刚度退化的一种自复位混凝土桥墩简化分析模型[J]. 清华大学学报(自然科学版), 2016, 56(4): 341-347.
[2] 谭清华, 周侃, 韩林海. 火灾后型钢混凝土构件抗弯和轴压刚度计算方法[J]. 清华大学学报(自然科学版), 2015, 55(6): 597-603.
[3] 钱稼茹,张扬,张微敬. 双钢管高强混凝土短柱偏心受压性能试验[J]. 清华大学学报(自然科学版), 2015, 55(1): 1-7.
[4] 林鹏,胡杭,郑东,李庆斌. 大体积混凝土真实温度场演化规律试验[J]. 清华大学学报(自然科学版), 2015, 55(1): 27-32.
[5] 魏亚, 姚湘杰. 约束状态下混凝土拉伸徐变模型[J]. 清华大学学报(自然科学版), 2014, 54(5): 563-567.
Viewed
Full text


Abstract

Cited

  Shared   
  Discussed   
版权所有 © 《清华大学学报(自然科学版)》编辑部
本系统由北京玛格泰克科技发展有限公司设计开发 技术支持:support@magtech.com.cn