Experimental Research on Mechanical Properties of Concrete After Carbonization at High Temperatures

ZHAO Yanru; SHI Lei; BAI Jianwen; WANG Zhihui

doi:10.13204/j.gyjzG20090301

Volume 52 Issue 2

Feb. 2022

Turn off MathJax

Article Contents

Article Navigation > INDUSTRIAL CONSTRUCTION > 2022 > 52(2): 139-143

ZHAO Yanru, SHI Lei, BAI Jianwen, WANG Zhihui. Experimental Research on Mechanical Properties of Concrete After Carbonization at High Temperatures[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(2): 139-143. doi: 10.13204/j.gyjzG20090301

Citation:

ZHAO Yanru, SHI Lei, BAI Jianwen, WANG Zhihui. Experimental Research on Mechanical Properties of Concrete After Carbonization at High Temperatures[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(2): 139-143. doi: 10.13204/j.gyjzG20090301

Citation:

PDF( 2043 KB)

Experimental Research on Mechanical Properties of Concrete After Carbonization at High Temperatures

doi: 10.13204/j.gyjzG20090301

1. School of Civil Engineering, Inner Mongolia University of Technology, Hohhot 010051, China;
2. Institute of Mining Technology, Inner Mongolia University of Technology, Hohhot 010051, China;
3. Inner Mongolia Branch of China Aviation Oil Co., Ltd., Hohhot 010051, China

Received Date: 2020-09-03
Available Online: 2022-06-30
Publish Date: 2022-02-20

Abstract

Abstract

Through the high temperature test of the concrete after carbonization, the change rules of carbonization depth, mass loss, compressive strength and flexural strength were studied; the degradation mechanism of the mechanical properties of concrete after high-temperature carbonization was analyzed; the calculation formulas of compressive strength and flexural strength based on the mass loss ratios of concrete at high temperatures after carbonization were established. The results showed that with the continuons carbonization of concrete, the carbonization depth and mass loss increased; when the carbonization age was 7 d, 14 d, 28 d, the compressive strength of concrete decreased first, then increased and then decreased with the increase of temperature; the peak vale of the compressive strength of concrete with carbonization age of 14 d or 28 d appeared at 400 ℃; the general trend of the flexural strength of concrete decreased with the increasing temperature, but when the carbonization age was 14 d or 28 d and the temperature was 200 ℃, its flexural strength would increase slightly; the calculation fomulas of the compressive strength and flexural strength based on the mass loss ratios of concrete could be used to predict the compressive strength and flexural strength of concrete at different carbonization ages and different temperatures.
- carbonation,
- high temperature,
- carbonation depth,
- mass loss,
- compressive strength,
- flexural strength

FullText(HTML)

References(18)

References

[1]	郭英楠.大气二氧化碳浓度达历史顶点[J].生态经济,2019,35(7):5-8.
[2]	牛荻涛.混凝土结构耐久性与寿命预测[M].北京:科学出版社,2002.
[3]	贾星亮.混凝土碳化影响因素的研究现状[J].科学技术创新,2020(5):108-109.
[4]	马腾飞.混凝土碳化反应的危害及施工中防治分析[J].工程技术研究,2019,4(23):107-108.
[5]	兰大鹏,欧洋.通过碳化试验检测混凝土结构的耐久性[J].四川建材,2019,45(5):30-31 ,33.
[6]	TSIMBROVSKA M, KALIFA P, QUENARD D,et al. High performance concrete at elevated temperature:permeability and microstructure[C]//Transactions of the 14th International Confer-ence on Structural Mechanics in Reactor Technology. 1997:475-482.
[7]	史英豪,杜红秀,阎蕊珍.高温后C80高强混凝土的质量损失和抗压性能研究[J].硅酸盐通报,2016,35(3):980-983 ,988.
[8]	陈宗平,王欢欢,陈宇良.高温后混凝土的力学性能试验研究[J].混凝土,2015(1):13-17.
[9]	张白,陈俊,杨鸥,等.高温后混凝土质量损失及抗压强度退化规律试验研究[J].建筑结构,2019,49(4):76-81.
[10]	赵东拂,刘梅.高强混凝土高温后剩余强度及无损检测试验研究[J].建筑结构学报,2015(增刊2):365-372.
[11]	申嘉荣,徐千军.高温对混凝土孔隙结构改变和抗压强度降低作用的规律研究[J].材料导报,2020,34(2):2046-2051.
[12]	GENG J,SUN Q,ZHANG W,et al.Effect of high temperature on mechanical and acoustic emission properties of calcareous-aggregate concrete[J].Applied Thermal Engineering,2016,106:1200-1208.
[13]	FU Y F,WONG Y L,POON C S,et al.Stress-strain behaviour of high-strength concrete at elevated temperatures[J].Magazine of Concrete Research,2005,57(9):535-544.
[14]	田伟浩.二氧化碳养护混凝土砌块的耐高温性能研究[D].长沙:湖南大学,2018.
[15]	中华人民共和国住房和城乡建设部.普通混凝土长期性能和耐久性能试验方法标准:GB/T 50082-2009[S].北京:中国建筑工业出版社,2009.
[16]	Deutsches Institut für Normung (DIN). Design of concrete structure, Eurocode No.2.part 10:structural fire design:DINEN 1990-1-2[S].Brussels:Commission of the European Communities,1990.
[17]	Commission of the Europear Communities (CEN) Design manual on the european recommendations for the safety of steel structure:BSEN 1985-1-1[S]. Brussels:Commission of the Europear Communities, 1985.
[18]	Internatioinal Stondardization Organization (ISO). Draft of proposed revision to ISO 834[S]. Geneva:Internatioinal Stondardization Organization, 1991.