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| 高强轻集料混凝土桥面施工泵送技术 | |
| 引用本文： | 丁庆军,张勇,王发洲,黄志刚,叶家军,张学锋,胡曙光.高强轻集料混凝土桥面施工泵送技术[J].混凝土,2002(1):58-60. |
| 作者姓名： | 丁庆军 张勇 王发洲 黄志刚 叶家军 张学锋 胡曙光 |
| 作者单位： | 1. 武汉理工大学,湖北,武汉,430070 2. 湖北省交通厅,湖北,武汉,430070 3. 湖北大学,湖北,武汉,430070 |
| 基金项目： | 湖北省交通厅科技攻关项目 ( 2 0 0 1-0 0 10 ) |
| 摘 要： | 轻集料混凝土（LWAC）由轻质多孔集料和水泥石胶结而成。在施工过程中，LWAC由于集料多孔的性质，会从水泥浆中吸收水分，造成混凝土坍落的降低，影响混凝土的泵送性能；另外，LWAC的收缩变形比普通混凝土大，更易使混凝土形成裂缝。通过对LWAC高性能化等技术手段，配制出干表观密度小于1950kg/m^3，易于泵送和体积稳定性好的混凝土。使纤维增强泵送高强（CL40）LWAC技术第一次成功地在我国桥梁工程应用。 |
| 关 键 词： | 轻集料 高强泵送 抗裂 桥面 工程施工 混凝土 |
| 文章编号： | 1002-3550(2002)01-0058-03 |
| 修稿时间： | 2001年10月30 |
Pumping technology of high-strength light weight aggregate concrete on bridge construction |
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| DING Qing jun ,ZHANG Yong ,WANG Fa zhou ,HUANG Zhi gang ,YE Jian jun ,ZHANG Xue feng ,HU Shu guang.Pumping technology of high-strength light weight aggregate concrete on bridge construction[J].Concrete,2002(1):58-60. | |
| Authors: | DING Qing jun ZHANG Yong WANG Fa zhou HUANG Zhi gang YE Jian jun ZHANG Xue feng HU Shu guang |
| Affiliation: | DING Qing jun 1,ZHANG Yong 1,WANG Fa zhou 1,HUANG Zhi gang 2,YE Jian jun 3,ZHANG Xue feng 2,HU Shu guang 3 |
| Abstract: | Light weight aggregate concrete(LWAC)is composed of light weight poriferous aggregate and cement paste.Under the condition of pumping pressure,the aggregate will absorb some water from grout due to its poriferous character.Therefore,the slump of LWAC will reduce,and the pumping performance of LWAC becomes bad.In addition,the shrinkage of LWAC is bigger than that of Normal Concrete(NC),so the crack will bring about unavoidable.In this paper,the problems of pumping LWAC are resolved successfully through some technology.The bridge project,CaiDian HanJiang River,applies our technology firstly in China,and the effect is ideal. |
| Keywords: | light weight Aggregate High strength pumping Anti crack construction technology |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |