不同低温工况下混凝土的受压强度研究_《混凝土与水泥制品》杂志社

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发布时间：2020-01-06 00:00:00

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不同低温工况下混凝土的受压强度研究

Study on Compressive Strength of Concrete Under Different Low Temperature Action Conditions

2023年第1期

混凝土；超低温；低温；受压强度；变异系数

Concrete; Ultralow temperature; Low temperature; Compressive strength; Variation coefficient

2023年第1期

10.19761/j.1000-4637.2023.01.001.05

国家自然科学基金项目（51878375）。

时旭东，韩大全，崔一丹

清华大学土木工程系，北京 100084

时旭东，韩大全，崔一丹

时旭东,韩大全,崔一丹.不同低温工况下混凝土的受压强度研究[J].混凝土与水泥制品,2023(1):1-4,10.

SHI X D,HAN D Q,CUI Y D.Study on Compressive Strength of Concrete Under Different Low Temperature Action Conditions[J].China Concrete and Cement Products,2023(1):1-4,10.

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摘要：基于由常温（20 ℃）降至给定低温（-40、-80、-120、-160、-190 ℃）、经历低温再直接或以1 ℃/min匀速回至常温3种工况下的混凝土受压试验，研究了不同低温作用下混凝土的受压强度及其离散性。结果表明：随着低温温度的降低，混凝土的受压强度变化率高于常温时的受压强度变化率，且整体呈增大趋势，其离散性也明显变大；而经历低温再直接和以1 ℃/min匀速回至常温时混凝土的受压强度变化率相比常温时均有所提高，但与低温温度关联度较低，其离散性也均减小。 Abstract: The compressive strength and its discreteness of concrete subjected to different low temperatures were discussed through compressive experiment of concrete under three temperature conditions: cooling to given low temperatures(-40, -80, -120, -160, -190 ℃) from room temperature, and returning to room temperature directly and at a rate of 1 ℃/min after experiencing given low temperatures. The results show that the change rate of compressive strength of concrete at low temperature is higher than that at room temperature without experiencing action from low temperature and generally increases with the decrease in the low temperature, and its discreteness increases obviously. Compared with the change rate of compressive strength of concrete at room temperature, the change rate of compressive strength of concrete for returning directly and at the rate of 1 ℃/min to room temperature from low temperatures still increases, but the correlation with the low temperature is low and the compressive strength discreteness is also reduced.

英文名 : Study on Compressive Strength of Concrete Under Different Low Temperature Action Conditions

刊期 : 2023年第1期

关键词 : 混凝土；超低温；低温；受压强度；变异系数

Key words : Concrete; Ultralow temperature; Low temperature; Compressive strength; Variation coefficient

刊期 : 2023年第1期

DOI : 10.19761/j.1000-4637.2023.01.001.05

文章编号 :

基金项目 : 国家自然科学基金项目（51878375）。

作者 : 时旭东，韩大全，崔一丹

单位 : 清华大学土木工程系，北京 100084

时旭东，韩大全，崔一丹

时旭东,韩大全,崔一丹.不同低温工况下混凝土的受压强度研究[J].混凝土与水泥制品,2023(1):1-4,10.

SHI X D,HAN D Q,CUI Y D.Study on Compressive Strength of Concrete Under Different Low Temperature Action Conditions[J].China Concrete and Cement Products,2023(1):1-4,10.

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摘要

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结论

参考文献

引用本文

Abstract: The compressive strength and its discreteness of concrete subjected to different low temperatures were discussed through compressive experiment of concrete under three temperature conditions: cooling to given low temperatures(-40, -80, -120, -160, -190 ℃) from room temperature, and returning to room temperature directly and at a rate of 1 ℃/min after experiencing given low temperatures. The results show that the change rate of compressive strength of concrete at low temperature is higher than that at room temperature without experiencing action from low temperature and generally increases with the decrease in the low temperature, and its discreteness increases obviously. Compared with the change rate of compressive strength of concrete at room temperature, the change rate of compressive strength of concrete for returning directly and at the rate of 1 ℃/min to room temperature from low temperatures still increases, but the correlation with the low temperature is low and the compressive strength discreteness is also reduced.

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[1] 山根昭,赵克志.超低温混凝土[J].低温建筑技术,1980(1):57-60.
[2] 肖立,刘洋,赵铭睿,等.超大型LNG预应力混凝土储罐温度应力耦合分析[J].低温建筑技术,2020,42(12):95-98.
[3] 蒋正武,张楠,李雄英,等.国外超低温下混凝土性能的研究进展评述[J].材料导报,2011,25(13):1-4.
[4] 时旭东,汪文强,田佳伦.不同强度等级混凝土遭受超低温冻融循环作用的受压强度试验研究[J].工程力学,2020,37(2):211-220,240.
[5] JIANG Z W,HE B,ZHU X P,et al.State-of-the-art Review on Properties Evolution and Deterioration Mechanism of Concrete at Cryogenic Temperature[J].Construction and Building Materials,2020,257:119456.
[6] 时旭东,钱磊,崔一丹.关键影响因素耦合作用下混凝土低温受压强度试验研究[J].工业建筑,2020,50(1):135-141.
[7] 时旭东,崔一丹,钱磊.关键影响因素耦合作用下混凝土低温弹性模量试验研究[J].混凝土,2021,381(7):1-6.

[8] 魏强,谢剑,吴洪海.超低温冻融循环对混凝土材料性能的影响[J].工程力学,2013,30(S1):125-131.
[9] 候春平,陈灯红,彭刚,等.冻融劣化混凝土冰冻状态动态轴压本构特征研究[J].实验力学,2020,35(6):1101-1112.
[10] 时旭东,张亮,郑建华,等.低温-常温循环作用下混凝土力学性能试验研究[J].混凝土与水泥制品,2012(7):6-10.
[11] 时旭东,田佳伦,钱磊,等.经历常温降温及再回温的混凝土受力性能试验研究[J].工业建筑,2019,49(7):119-123,128.
[12] 时旭东,钱磊,马驰,等.经历常温降至-196 ℃再回温混凝土温度场试验研究[J].工程力学,2018,35(5):162-169.
[13] 时旭东,崔一丹,韩大全.不同低温作用下混凝土的受拉强度研究[J].混凝土与水泥制品,2022(11):1-4,17.
[14] 时旭东,崔一丹,钱磊.关键影响因素耦合作用下混凝土低温受拉强度试验研究[J].工业建筑,2020,50(8):85-91.
[15] 朱清华,费伟全,谢松.低负温型管道压浆料工艺性能研究[J].混凝土与水泥制品,2017(4):88-90,94.
[16] 张迎辉.受压混凝土冻融试验中的预应力损失[J].混凝土与水泥制品,2018(4):30-32.
[17] 杨国刚,侯维红,吴文选,等.低温条件下套筒灌浆料应用性能的研究[J].混凝土与水泥制品,2018(4):90-94.
[18] 杨彬,丁斌.低温环境下麦秸秆灰改性碳纤维混凝土性能试验研究[J].混凝土与水泥制品,2017(5):49-52.
[19] 梁济丰,吕磊,王峰.低温下钢纤维混凝土SHPB试验研究[J].混凝土与水泥制品,2013(10):43-47.

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