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百米基坑巨型柱不同配合比水泥水化热研究
Study on Heat of Hydration of Huge Columns in 100-meter Pit with Different Mix Proportion
百米基坑巨型柱;水化放热速率;配合比水化热;配合比优化
Huge column in 100-meter pit; The hydration heat releasing rate; Heat of hydration of mix; Mix optimization
2018年第1期
1000-4637(2018)01-32-04
长沙市科技计划项目(kh1701107)经费资助
刘 哲,燕雷鸣,曾 维,李 曦,蒋 震,冷 政
中建西部建设湖南有限公司,长沙 410004

刘 哲,燕雷鸣,曾 维,李 曦,蒋 震,冷 政

刘哲,燕雷鸣,曾维,等.百米基坑巨型柱不同配合比水泥水化热研究[J].混凝土与水泥制品,2018(1):32-34+46.

LIU Z,YAN L M,ZENG W,et al.Study on Heat of Hydration of Huge Columns in 100-meter Pit with Different Mix Proportion[J].China Concrete and Cement Products,2018(1):32-34+46.

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摘 要:通过对不同生产工艺的水泥水化放热量进行试验,得到各水泥的水化放热曲线和拟合公式,可以用于预测不同时间段内水化放热量,并结合各工艺水泥的抗压强度对水泥进行了选择。对基准C60P10和C40P10进行优化,同时,通过四种配合比胶材的水化热量化试验,发现降低水泥用量,增加粉煤灰和矿粉用量可以有效降低混凝土水化热,其中,优化后C60P10的7d水化热降低10.4%,优化后C40P10的7d水化热降低25.4%。 Abstract: The experiment with heat of hydration of different cement craft in the mixing stations was carried out, the hydrothermal curve and the fitting formula for each cement were obtained. Different periods of heat of hydration of different cement craft could be properly predicted. The compressive strength of each process cement is combined to choose the cement. The mixture ratio benchmark C60P10 and C40P10 was optimized with heat of hydration of four kinds of rubber mixture material quantitative test. The results show that reducing the dosage of cement, increasing the dosage of fly ash and mineral powder can effectively reduce heat of hydration of concrete, including after optimization, the 7d hydration heat of C60P10 is reduced by 10.4%, the optimization of C40P10 is reduced by 25.4%.
英文名 : Study on Heat of Hydration of Huge Columns in 100-meter Pit with Different Mix Proportion
刊期 :
关键词 : 百米基坑巨型柱;水化放热速率;配合比水化热;配合比优化
Key words : Huge column in 100-meter pit; The hydration heat releasing rate; Heat of hydration of mix; Mix optimization
刊期 : 2018年第1期
DOI :
文章编号 : 1000-4637(2018)01-32-04
基金项目 : 长沙市科技计划项目(kh1701107)经费资助
作者 : 刘 哲,燕雷鸣,曾 维,李 曦,蒋 震,冷 政
单位 : 中建西部建设湖南有限公司,长沙 410004

刘 哲,燕雷鸣,曾 维,李 曦,蒋 震,冷 政

刘哲,燕雷鸣,曾维,等.百米基坑巨型柱不同配合比水泥水化热研究[J].混凝土与水泥制品,2018(1):32-34+46.

LIU Z,YAN L M,ZENG W,et al.Study on Heat of Hydration of Huge Columns in 100-meter Pit with Different Mix Proportion[J].China Concrete and Cement Products,2018(1):32-34+46.

摘要
参数
结论
参考文献
引用本文

摘   要:通过对不同生产工艺的水泥水化放热量进行试验,得到各水泥的水化放热曲线和拟合公式,可以用于预测不同时间段内水化放热量,并结合各工艺水泥的抗压强度对水泥进行了选择。对基准C60P10和C40P10进行优化,同时,通过四种配合比胶材的水化热量化试验,发现降低水泥用量,增加粉煤灰和矿粉用量可以有效降低混凝土水化热,其中,优化后C60P10的7d水化热降低10.4%,优化后C40P10的7d水化热降低25.4%。
Abstract: The experiment with heat of hydration of different cement craft in the mixing stations was carried out, the hydrothermal curve and the fitting formula for each cement were obtained. Different periods of heat of hydration of different cement craft could be properly predicted. The compressive strength of each process cement is combined to choose the cement. The mixture ratio benchmark C60P10 and C40P10 was optimized with heat of hydration of four kinds of rubber mixture material quantitative test. The results show that reducing the dosage of cement, increasing the dosage of fly ash and mineral powder can effectively reduce heat of hydration of concrete, including after optimization, the 7d hydration heat of C60P10 is reduced by 10.4%, the optimization of C40P10 is reduced by 25.4%. 

关键词:
百米基坑巨型柱;水化放热速率;配合比水化热;配合比优化
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(1)冰雪世界项目巨型柱施工需采用低水化热水泥和低水化热配合比,保障施工质量。
(2)根据不同工艺水泥的水化放热图和拟合公式可以适当地预测某个时间段内的水化放热量。
(3)工艺E水泥在3d内的水化放热量和水化放热速度较低,适合用在大体积低水化热的混凝土构筑物中。
(4)水泥胶砂强度与水化热具有一定相关性,但不是完全相关。
(5)配合比胶材同样可进行水化热定量测量,通过优化配比,降低水泥用量,增加粉煤灰和矿粉用量,可以有效降低混凝土水化热和收缩值。
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[3] 李响,阿茹罕,阎培渝.水泥-粉煤灰复合胶凝材料水化程度的研究[J].建筑材料学报,2010,13(5):584-588.
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[5] A.S.M. Abdul Awal, I.A. Shehu.Evaluation of heat of hydration of concrete containing high volume palm oil fuel ash[J].Fuel,2013,105:728-731.
[6] 余保英,高育欣,王军.含不同石膏种类的超硫酸盐水泥的水化行为[J].建筑材料学报,2014,17(6):965-971.
[7] Yunus Ballim·Peter C.Graham,The effects of supplementary cementing materials in modifying the heat of hydration of concrete[J].Materials and Structures,2009,42:803-811.
[8] 侯新凯,董跃斌,薛博.低热钢渣矿渣硅酸盐水泥的研制(Ⅱ):低水化热优势配料方案和水泥最佳综合性能区[J].硅酸盐通报,2014,33(11):2802-2808.
 

刘哲,燕雷鸣,曾维,.百米基坑巨型柱不同配合比水泥水化热研究[J].混凝土与水泥制品,2018(1):32-34+46.

LIU Z,YAN L M,ZENG W,et al.Study on Heat of Hydration of Huge Columns in 100-meter Pit with Different Mix Proportion[J].China Concrete and Cement Products,2018(1):32-34+46.

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