| 添加外加剂的密闭混凝土徐变系数计算模型 |
| |
| 引用本文： | Shrestha K M,陈宝春,李生勇.添加外加剂的密闭混凝土徐变系数计算模型[J].福州大学学报(自然科学版),2010,38(3):425-431. |
| |
| 作者姓名： | Shrestha K M 陈宝春 李生勇 |
| |
| 作者单位： | 福州大学土木工程学院， 福建 福州 350108;福州大学土木工程学院， 福建 福州 350108;福州大学土木工程学院， 福建 福州 350108 |
| |
| 摘 要： | 进行了13根外加剂的密闭混凝土试件的徐变试验研究,其中9根为徐变试件,4根为收缩试件.试验结果与ACI-209R的计算结果对比表明,二者规律吻合较好,ACI-209R模型基本可用于有外加剂的密闭混凝土的徐变的预测.利用回归分析,对ACI-209R的模型进行了修正,可得出更精确的计算结果.同时,对不同应力强度比对相同试件的影响进行了观察,提出了考虑应力强度比影响的徐变公式.
|
| 关 键 词： | 收缩 徐变系数 混凝土 密闭 外加剂 回归分析 |
Calculation models of creep coefficients for sealed concrete with additives |
| |
| Shrestha K M,CHEN Bao-chun and LI Sheng-yong.Calculation models of creep coefficients for sealed concrete with additives[J].Journal of Fuzhou University(Natural Science Edition),2010,38(3):425-431. |
| |
| Authors: | Shrestha K M CHEN Bao-chun and LI Sheng-yong |
| |
| Institution: | College of Civil Engineering, Fuzhou University, Fuzhou, Fujian 350108, China;College of Civil Engineering, Fuzhou University, Fuzhou, Fujian 350108, China;College of Civil Engineering, Fuzhou University, Fuzhou, Fujian 350108, China |
| |
| Abstract: | Thirteen specimens of sealed concrete with additives were tested out of which nine were for creep of sealed concrete and four for shrinkage test, for a period of 700 days under controlled temperature condition. From the comparison results between experiments and model of ACI-209R, they coincide very well and the ACI-209R model can be used to predict shrinkage and creep of sealed concrete with additives. Based on regression analysis, modification on ACI-209R model has been formulated which will give more accurate prediction results. Besides, on the basis of observation on identical specimens with varied stress strength ratio, a function is generated which accounts effect of stress strength ratio on creep. |
| |
| Keywords: | |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《福州大学学报(自然科学版)》浏览原始摘要信息 |
| 点击此处可从《福州大学学报(自然科学版)》下载免费的PDF全文 |
|
