| 超厚底板低水化热泵送混凝土研究 |
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| 引用本文： | 唐明,蒋宏伟,宋东升.超厚底板低水化热泵送混凝土研究[J].混凝土,2011(3):1-4,45. |
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| 作者姓名： | 唐明 蒋宏伟 宋东升 |
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| 作者单位： | 1. 沈阳建筑大学,材料科学与工程学院,辽宁沈阳110168
2. 沈阳泰丰特种混凝土有限公司,辽宁沈阳,110015 |
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| 摘 要： | 为解决超厚底板混凝土的温度裂缝问题,在综合防裂措施中采用低水化热的混凝土是非常有效的,结合沈阳地区2个厚度超过8m的超厚底板混凝土的工程实际,探索了掺人大量降低水化热的复合掺合料(最高达到58%)和控制水化热技术,缓凝、泵送、防水一体化的技术.研究发现,过多粉煤灰掺量早期强度低,过多矿渣粉易开裂,较好的配合比关系是粉煤...
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| 关 键 词： | 泵送混凝土 超厚底板 收缩开裂 低水化热 |
Research on pumped concrete about low heat of hydration |
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| TANG Ming,JIANG Hong-wei,SONG Dong-sheng.Research on pumped concrete about low heat of hydration[J].Concrete,2011(3):1-4,45. |
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| Authors: | TANG Ming JIANG Hong-wei SONG Dong-sheng |
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| Affiliation: | TANG Ming 1,JIANG Hong-wei 1,SONG Dong-sheng 2(1.School of Materials Science and Engineering,Shenyang Jianzhu University,Shenyang 110168,China,2.Shenyang Taifeng Special Concrete Company,Shenyang 110015,China) |
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| Abstract: | To avoid thermal crack of superthick soleplate concrete,using concrete of low heat development is effective.based on projects of Shenyang,these technology which consist of concrete mixed with compound mineral admixture,controlling heat development heat and retardation setting,pumping,water proofing are argued in the paper.The results show that the strength of concrete mixed with a large amount of fly ash is lower,and the concrete is apt to cracking,proper relations between fly ash and slag powder is 1.5 to ... |
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| Keywords: | pumped concrete superthick soleplate shrinkage crack low hydration |
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