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高温后玄武岩纤维混凝土力学性能试验研究
Experimental Study on Mechanical Properties of Basalt Fiber Concrete After High Temperature
2020年第10期
混凝土;玄武岩纤维;高吸水树脂;纤维素纤维;高温;力学性能;预测模型
Concrete; Basalt fiber; Super absorbent resin; Cellulose fiber; High temperature; Mechanical property; Prediction model
2020年第10期
10.19761/j.1000-4637.2020.10.061.04
辽宁省自然科学基金项目(2015020208)。
李 曈1,张晓东1,刘华新1,陈 明2,范锦泽1,陈 晨1
1.辽宁工业大学 土木建筑工程学院,辽宁 锦州 121001;2.盘锦职业技术学院,辽宁 盘锦 124000

李 曈1,张晓东1,刘华新1,陈 明2,范锦泽1,陈 晨1

摘   要:研究了高温作用下素混凝土、玄武岩纤维混凝土、玄武岩-高吸水树脂混凝土及玄武岩-纤维素混杂纤维混凝土的力学性能,建立了高温作用后混凝土的抗压强度预测模型。结果表明:纤维的掺入能够提高混凝土的耐高温性能;对于抗压强度,玄武岩-纤维素混杂纤维混凝土的抗压强度值最高,400 ℃时,其抗压强度相较素混凝土提高了36.3%;对于抗折强度,玄武岩和高吸水树脂混掺对混凝土抗折强度的提升效果最优;建立的高温作用下混凝土抗压强度预测模型的精度较高。

Abstract: The mechanical properties of plain concrete, basalt fiber concrete, basalt-superabsorbent resin concrete and basalt-cellulose hybrid fiber concrete after high temperature were studied, and the prediction models of compressive strength of concrete after high temperature were established. The results show that the addition of fiber can effectively improve the high temperature resistance of concrete. For compressive strength, the basalt-cellulose hybrid fiber concrete has the highest compressive strength, and at 400 ℃, its compressive strength is 36.3% higher than that of plain concrete. For flexural strength, the mixing of basalt and superabsorbent resin has the best effect on the improvement of the flexural strength of concrete. The established prediction models of compressive strength of concrete under high temperature have high accuracy.

李曈,张晓东,刘华新,等.高温后玄武岩纤维混凝土力学性能试验研究[J].混凝土与水泥制品,2020(10):61-64.

LI T,ZHANG X D,LIU H X,et al.Experimental Study on Mechanical Properties of Basalt Fiber Concrete After High Temperature[J].CHINA CONCRETE AND CEMENT PRODUCTS,2020(10):61-64.

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摘   要:研究了高温作用下素混凝土、玄武岩纤维混凝土、玄武岩-高吸水树脂混凝土及玄武岩-纤维素混杂纤维混凝土的力学性能,建立了高温作用后混凝土的抗压强度预测模型。结果表明:纤维的掺入能够提高混凝土的耐高温性能;对于抗压强度,玄武岩-纤维素混杂纤维混凝土的抗压强度值最高,400 ℃时,其抗压强度相较素混凝土提高了36.3%;对于抗折强度,玄武岩和高吸水树脂混掺对混凝土抗折强度的提升效果最优;建立的高温作用下混凝土抗压强度预测模型的精度较高。 Abstract: The mechanical properties of plain concrete, basalt fiber concrete, basalt-superabsorbent resin concrete and basalt-cellulose hybrid fiber concrete after high temperature were studied, and the prediction models of compressive strength of concrete after high temperature were established. The results show that the addition of fiber can effectively improve the high temperature resistance of concrete. For compressive strength, the basalt-cellulose hybrid fiber concrete has the highest compressive strength, and at 400 ℃, its compressive strength is 36.3% higher than that of plain concrete. For flexural strength, the mixing of basalt and superabsorbent resin has the best effect on the improvement of the flexural strength of concrete. The established prediction models of compressive strength of concrete under high temperature have high accuracy.
英文名 : Experimental Study on Mechanical Properties of Basalt Fiber Concrete After High Temperature
刊期 : 2020年第10期
关键词 : 混凝土;玄武岩纤维;高吸水树脂;纤维素纤维;高温;力学性能;预测模型
Key words : Concrete; Basalt fiber; Super absorbent resin; Cellulose fiber; High temperature; Mechanical property; Prediction model
刊期 : 2020年第10期
DOI : 10.19761/j.1000-4637.2020.10.061.04
文章编号 :
基金项目 : 辽宁省自然科学基金项目(2015020208)。
作者 : 李 曈1,张晓东1,刘华新1,陈 明2,范锦泽1,陈 晨1
单位 : 1.辽宁工业大学 土木建筑工程学院,辽宁 锦州 121001;2.盘锦职业技术学院,辽宁 盘锦 124000

李 曈1,张晓东1,刘华新1,陈 明2,范锦泽1,陈 晨1

摘   要:研究了高温作用下素混凝土、玄武岩纤维混凝土、玄武岩-高吸水树脂混凝土及玄武岩-纤维素混杂纤维混凝土的力学性能,建立了高温作用后混凝土的抗压强度预测模型。结果表明:纤维的掺入能够提高混凝土的耐高温性能;对于抗压强度,玄武岩-纤维素混杂纤维混凝土的抗压强度值最高,400 ℃时,其抗压强度相较素混凝土提高了36.3%;对于抗折强度,玄武岩和高吸水树脂混掺对混凝土抗折强度的提升效果最优;建立的高温作用下混凝土抗压强度预测模型的精度较高。

Abstract: The mechanical properties of plain concrete, basalt fiber concrete, basalt-superabsorbent resin concrete and basalt-cellulose hybrid fiber concrete after high temperature were studied, and the prediction models of compressive strength of concrete after high temperature were established. The results show that the addition of fiber can effectively improve the high temperature resistance of concrete. For compressive strength, the basalt-cellulose hybrid fiber concrete has the highest compressive strength, and at 400 ℃, its compressive strength is 36.3% higher than that of plain concrete. For flexural strength, the mixing of basalt and superabsorbent resin has the best effect on the improvement of the flexural strength of concrete. The established prediction models of compressive strength of concrete under high temperature have high accuracy.

李曈,张晓东,刘华新,等.高温后玄武岩纤维混凝土力学性能试验研究[J].混凝土与水泥制品,2020(10):61-64.

LI T,ZHANG X D,LIU H X,et al.Experimental Study on Mechanical Properties of Basalt Fiber Concrete After High Temperature[J].CHINA CONCRETE AND CEMENT PRODUCTS,2020(10):61-64.

摘要
参数
结论
参考文献
引用本文

摘   要:研究了高温作用下素混凝土、玄武岩纤维混凝土、玄武岩-高吸水树脂混凝土及玄武岩-纤维素混杂纤维混凝土的力学性能,建立了高温作用后混凝土的抗压强度预测模型。结果表明:纤维的掺入能够提高混凝土的耐高温性能;对于抗压强度,玄武岩-纤维素混杂纤维混凝土的抗压强度值最高,400 ℃时,其抗压强度相较素混凝土提高了36.3%;对于抗折强度,玄武岩和高吸水树脂混掺对混凝土抗折强度的提升效果最优;建立的高温作用下混凝土抗压强度预测模型的精度较高。

Abstract: The mechanical properties of plain concrete, basalt fiber concrete, basalt-superabsorbent resin concrete and basalt-cellulose hybrid fiber concrete after high temperature were studied, and the prediction models of compressive strength of concrete after high temperature were established. The results show that the addition of fiber can effectively improve the high temperature resistance of concrete. For compressive strength, the basalt-cellulose hybrid fiber concrete has the highest compressive strength, and at 400 ℃, its compressive strength is 36.3% higher than that of plain concrete. For flexural strength, the mixing of basalt and superabsorbent resin has the best effect on the improvement of the flexural strength of concrete. The established prediction models of compressive strength of concrete under high temperature have high accuracy.

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(1)与NC相比,BFC、SBFC、CBFC的耐高温性能较好。
(2)对于抗压强度,各组试件的抗压强度均随着温度的升高呈先增大后减小趋势。其中,NC的抗压强度在200 ℃时达到最高值,BFC、SBFC、CBFC的抗压强度在400 ℃时达到峰值。玄武岩-纤维素纤维对混凝土抗压强度的增强效果最显著。
(3)对于抗折强度,各组试件的抗折强度均随着温度的升高而下降。不同温度条件下,纤维混凝土的抗折强度残余率均高于NC组试件,即纤维混凝土展现出了更好的抗折性能,且玄武岩-高吸水树脂对混凝土抗折强度的增强效果最显著。
(4)基于试验数据建立的高温作用下NC、BFC、SBFC和CBFC的抗压强度预测模型的精度较高。

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李曈,张晓东,刘华新,.高温后玄武岩纤维混凝土力学性能试验研究[J].混凝土与水泥制品,2020(10):61-64.

LI T,ZHANG X D,LIU H X,et al.Experimental Study on Mechanical Properties of Basalt Fiber Concrete After High Temperature[J].CHINA CONCRETE AND CEMENT PRODUCTS,2020(10):61-64.

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