[1]谢祥明.掺氧化镁的RCC特性试验研究及在马堵山大坝高温施工中的温控仿真[J].西安建筑科技大学学报:自然科学版,2011,43(01):137-142.[doi:DOI:10.15986/j.1006-7930.2011.01.015]
　XIE Xiang-ming GUO Lei CHEN Shou-kai.Ｐｒｏｐｅｒｔｙ　ｓｔｕｄｙ　ｏｎ　ＲＣＣ　ｗｉｔｈ　ＭｇＯ　ａｄｄｉｔｉｏｎ　ａｎｄ　ｔｅｍｐｅｒａｔｕｒｅｓｉｍｕｌａｔｉｏｎ　ｉｎ　ｔｈｅ　ｃｏｎｓｔｒｕｃｔｉｏｎ　ｏｆ　ＭａｄｕｓｈａｎＤａｍ　ｕｎｄｅｒ　ｈｉｇｈ　ｔｅｍｐｅｒａｔｕｒｅｓ[J].J.Xi’an Univ. of Arch. & Tech.:Natural Science Edition,2011,43(01):137-142.[doi:DOI:10.15986/j.1006-7930.2011.01.015]
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掺氧化镁的RCC特性试验研究及在马堵山大坝高温施工中的温控仿真()
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西安建筑科技大学学报:自然科学版[ISSN:1006-7930/CN:61-1295/TU]

卷:
43
期数:
2011年01期
页码:
137-142
栏目:
出版日期:
2011-02-28

文章信息/Info

Title:
Ｐｒｏｐｅｒｔｙ　ｓｔｕｄｙ　ｏｎ　ＲＣＣ　ｗｉｔｈ　ＭｇＯ　ａｄｄｉｔｉｏｎ　ａｎｄ　ｔｅｍｐｅｒａｔｕｒｅ
ｓｉｍｕｌａｔｉｏｎ　ｉｎ　ｔｈｅ　ｃｏｎｓｔｒｕｃｔｉｏｎ　ｏｆ　Ｍａｄｕｓｈａｎ
Ｄａｍ　ｕｎｄｅｒ　ｈｉｇｈ　ｔｅｍｐｅｒａｔｕｒｅｓ
文章编号:
１００６－７９３０（２０１１）０１－０１３７－０６
作者:
谢祥明
河海大学水利水电工程学院 江苏 南京 210098
Author(s):
XIE Xiang-ming1; 2 GUO Lei3 CHEN Shou-kai3
(1. Hohai University,Nanjing 210098,Nanjing 210098,China）
关键词:
氧化镁混凝土; 试验研究; 仿真; 碾压混凝土特性
Keywords:
Mgo concrete;  Experimental study; Simulation; Characteristics of RCC
分类号:
TV52
DOI:
DOI:10.15986/j.1006-7930.2011.01.015
文献标志码:
A
摘要:
掺MgO的RCC混凝土主要运用提高混凝土的防裂特性。通过外掺氧化镁碾压混凝土的特性试验研究，通过弹性模量与自生体积变形的试验，确定本文中碾压混凝土中恰当的MgO掺量为5.5%，并对马堵山大坝碾压混凝土的最大浇筑块的高温环境施工进行精确的温度场和应力场仿真计算，结果表明采用外掺氧化镁技术与埋设HDPE冷却水管相结合的措施对RCC高温施工的防裂是行之有效的温控防裂方法，为随后进行的马堵山碾压混凝土大坝高温环境的施工方案提供了重要的科学依据。
Abstract:
The addition of MgO in concrete has been proved to be an effective way to improve the crack-preventing properties of concrete . In this work, the optimal MgO content (5.5wt%) is obtained via investigating the addition of MgO on the modulus and autogenous growth of concrete carefully. Combining with temperature controlling units embedded inside of dam, concrete with optimized MgO content was applied in the construction of Madushan Dam at high temperature. The temperature and stress field were monitored and simulated. The results showed that the addition of MgO combing with internal temperature controlling units could effectively reduce the maximum temperature and the temperature gap inside and outside as well as the maximum internal stress, which is well known for favoring the crack preventing in concrete curing at high temperature.

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备注/Memo

备注/Memo:
收稿日期：２０１０－０３－０９　　修改稿日期：２０１０－１２－１２
基金项目：国家自然科学基金资助项目（５０５７９０８０）
作者简介：谢祥明（１９７４－），男，广东增城人，高级工程师，博士生，主要研究混凝土材料方向
更新日期/Last Update: 2015-11-01