Study on Site Construction Technology of Four-graded RCC

被引：6
|
作者：
Lin Yuqiang [1 ]
Shi Yan [1 ]
Guo Dingming [2 ]
Li Jiazheng [1 ]
Yang Huaquan [1 ]
机构：
[1] Changjiang Water Resources Commiss, Changjiang River Sci Res Inst, Wuhan 430010, Peoples R China
[2] Shatuo HydroPower Construct Co, Guizhou Wujiang HydroPower Dev Ltd, Guizhou 565300, Peoples R China
来源：
ADVANCED BUILDING MATERIALS, PTS 1-4 | 2011年 / 250-253卷 / 1-4期
关键词：
four-graded RCC (roller compacted concrete); construction technology; rolling times; relative compaction;
D O I：
10.4028/www.scientific.net/AMR.250-253.2927
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
Tests on rolling technology of four-graded RCC were carried out on dam site and then recommended construction parameters of four-graded RCC was proposed, which aimed to provide technique support for application of four-graded RCC in hydropower projects. Results show that when water consumption is 71kg/m(3) and VC value is 3s similar to 5s of four-graded RCC, large aggregates are coated with mortar sufficiently and the mixture has good performance of being-rolled and anti-separation. Recommended parameters of four-graded RCC are as follows: 2 times without vibration+6 times with vibration+2 times without vibration for 0.4m-thick layer, 2 times without vibration+8 times with vibration +2 times without vibration for 0.5m-thick layer, with rolling exciting force 395kN and walking speed 1.0 similar to 1.5km/h. Then the relative compaction of four-graded RCC can reach or exceed 98.0%.
引用
收藏
页码：2927 / +
页数：2
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