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(1 天津大學(xué)建筑工程學(xué)院，天津 300072； 2 廣州越秀城建國際金融中心有限公司，廣州 510620)
［摘要］對(duì)5片大型配筋剪力墻進(jìn)行足尺模型試驗(yàn)，研究5種不同分層澆注厚度及振搗方式對(duì)C70高強(qiáng)混凝土剪力墻浮漿厚度、收縮裂縫及強(qiáng)度、溫度控制的影響。結(jié)果表明，混凝土澆注工藝對(duì)和易性、坍落度、擴(kuò)展度、表面裂縫、溫度控制影響較小，對(duì)浮漿的影響較大；均勻振搗與超振剪力墻的浮漿厚度較大，抽芯試樣強(qiáng)度合格，未振搗的剪力墻的浮漿厚度較小，但抽芯試樣強(qiáng)度不合格；每層澆筑厚度宜控制在0.8～1m，且均勻布料振搗，該值能為現(xiàn)行規(guī)程的修訂與完善提供試驗(yàn)數(shù)據(jù)參考。
［關(guān)鍵詞］高強(qiáng)混凝土；澆筑工藝；浮漿；溫度；裂縫
Full-scale experimental study on pouring technology of C70 high strength concrete shear wall
Meng Huanling1，2, Huang Weigang2(1 School of Civil Engineering, Tianjin University, Tianjin 300072, China；\=2 Guangzhou Yuexiu Construction International Finance Center Co., Ltd., Guangzhou 510620, China)
Abstract:Five full-scale reinforced shear wall models are tested to study the influence of five different thicknesses of pouring layers and vibrating modes on laitance thickness, shrinkage crack and  control of strength and temperature of C70 high strength concrete shear walls. Result shows that the pouring techniques of concrete have little influences on workability, slump, spread, surface crack and temperature control, but more on laitance. Uniformly and over vibrated shear walls have thicker laitance, with qualified strength in core-pulling samples. And the shear walls without vibration have thinner laitance, with unqualified strength in core-pulling samples. Each pouring layer is advised to be controlled at 0.8～1m thickness and uniformly distributed and vibrated. And this quantitative value can provide experiment data reference for modification and improvement of current regulations.
Keywords:high strength concrete; pouring techniques; laitance; temperature; crack
作者簡(jiǎn)介：孟煥陵，博士，工程師，Email:menghuanling1@163.com。
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