| TBM洞挖料作为中强混凝土粗骨料的试验研究 |
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| 引用本文： | 赵卫国,史天聪,张保胜,王婧红,杨海燕.TBM洞挖料作为中强混凝土粗骨料的试验研究[J].河北工程大学学报,2020,37(2):8-13. |
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| 作者姓名： | 赵卫国 史天聪 张保胜 王婧红 杨海燕 |
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| 作者单位： | 河北工程大学 水利水电学院,河北 邯郸056038,河北工程大学 水利水电学院,河北 邯郸056038,山西省水利建筑工程局有限公司,山西 太原030006,河北工程大学 水利水电学院,河北 邯郸056038,河北工程大学 水利水电学院,河北 邯郸056038 |
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| 基金项目： | 国家自然科学基金资助项目（11972144） |
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| 摘 要： | 将隧道掘进机(TBM)洞挖料中的岩石作为混凝土粗骨料,设计两种骨料级配和0. 55、0. 60、0. 65、0. 70、0. 75五种水胶比,对TBM混凝土的抗压强度进行研究。试验结果表明:在相同水胶比下TBM混凝土的抗压强度小于普通碎石混凝土的抗压强度,并且随着水胶比的增加TBM混凝土的抗压强度下降幅度大于普通混凝土;水胶比在0. 55～0. 75的范围内,TBM混凝土抗压强度和水胶比之间成一次线性函数关系且为负相关;合理使用Talbot公式对TBM混凝土的骨料级配具有指导意义。
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| 关 键 词： | TBM洞挖料 片状骨料 水胶比 抗压强度 |
| 收稿时间： | 2020/2/27 0:00:00 |
Experimental Study on TBM Hole Excavated Material as Medium-strength Concrete Coarse Aggregate |
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| Authors: | ZHAO Weiguo SHI Tiancong ZHANG Baosheng WANG Jinghong YANG Haiyan |
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| Affiliation: | School of Water Conservancy and Hydroelectric Power, Hebei University of Engineering, Handan, Hebei 056000, China,School of Water Conservancy and Hydroelectric Power, Hebei University of Engineering, Handan, Hebei 056000, China,Water Conservancy Construction Engineering Bureau Co. LTD in Shanxi, Taiyuan, Shanxi 030006, China,School of Water Conservancy and Hydroelectric Power, Hebei University of Engineering, Handan, Hebei 056000, China and School of Water Conservancy and Hydroelectric Power, Hebei University of Engineering, Handan, Hebei 056000, China |
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| Abstract: | The rocks of TBM hole excavated material were used as the source of coarse aggregate of concrete. Two kinds of aggregate gradations were designed and five water-cement ratios of 0.55, 0.60, 0.65, 0.70 and 0.75 were used to study the compression strength of TBM concrete. The experimental results show that the compression strength of TBM concrete is less than that of ordinary crashed stone concrete at the same water-cement ratio, And with the increase of water-binder ratio, the compression strength of TBM concrete decreases more than that of ordinary concrete. In addition, in the range of water-cement ratio of 0.55 to 0.75, the relationship between the compression strength of TBM concrete and the water-cement ratio is a linear function with negative correlation. Besides, the rational use of Talbot formula is instructive to aggregate gradation of TBM concrete. |
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| Keywords: | TBM hole excavated material flaky aggregate water-cement ratio compression strength |
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