Experimental Investigation of the Residual Physical and Mechanical Properties of Foamed Concrete Exposed to High Temperatures

被引：19

作者：

Chen, Xudong ^{[1
]}

Shi, Dandan ^{[1
]}

Zhang, Jinhua ^{[2
,3
]}

Cheng, Xiyuan ^{[1
]}

机构：

[1] Hohai Univ, Coll Civil & Transportat Engn, Nanjing 210024, Peoples R China

[2] Southeast Univ, Minist Educ, Engn Res Ctr Safety & Protect Explos & Impact, Nanjing 211189, Peoples R China

[3] Southeast Univ, Sch Civil Engn, Nanjing 211189, Peoples R China

来源：

JOURNAL OF MATERIALS IN CIVIL ENGINEERING | 2021年 / 33卷 / 07期

基金：

中国国家自然科学基金;

关键词：

Foamed concrete; High temperatures; Density; Compressive strength; Pore structure; COMPRESSIVE STRENGTH; WATER-ABSORPTION;

D O I：

10.1061/(ASCE)MT.1943-5533.0003779

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Foamed concrete has been widely used in building energy conservation and insulation engineering, and its fire resistance is very important for buildings under fire. However, due to high porosity and permeability, the properties of foamed concrete are liable to change under high temperatures. Therefore, it is essential to evaluate the performance and functional evolution of foamed concrete at high temperatures. In this study, foamed concrete specimens with three different densities were treated at five different temperatures. The changes of macroscopic appearance and pore structure for the foamed concrete specimens under high temperature were analyzed to reveal the damage mechanism of temperature effects on foamed concrete. Besides, the high-temperature effect on the mass loss, water absorption, and compressive strength of the specimens were investigated. In addition, a prediction model of compressive strength for the foamed concrete considering the coupling effect of temperature and density was proposed.

引用

页数：8

共 31 条

[1] Effects of Key Factors on Compressive and Tensile Strengths of Concrete Exposed to Elevated Temperatures [J].

Ahmad, Shamsad ;

Sallam, Yassin Shaher ;

Al-Hawas, Mosaad Abdulaziz .

ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING, 2014, 39 (06) :4507-4513

[2] Influence of content and particle size of waste pet bottles on concrete behavior at different w/c ratios [J].

Albano, C. ;

Camacho, N. ;

Hernandez, M. ;

Matheus, A. ;

Gutierrez, A. .

WASTE MANAGEMENT, 2009, 29 (10) :2707-2716

[3] Properties and applications of foamed concrete; a review [J].

Amran, Y. H. Mugahed ;

Farzadnia, Nima ;

Ali, A. A. Abang .

CONSTRUCTION AND BUILDING MATERIALS, 2015, 101 :990-1005

[4] The effect of high-temperature on foamed concrete [J].

Canbaz, Mehmet ;

Dakman, Hafid ;

Arslan, Baris ;

Buyuksungur, Arda .

COMPUTERS AND CONCRETE, 2019, 24 (01) :1-6

[5] Foam Concrete as New Material in Road Constructions [J].

Decky, Martin ;

Drusa, Marian ;

Zgutova, Katarina ;

Blasko, Matej ;

Hajek, Matej ;

Scherfel, Walter .

WORLD MULTIDISCIPLINARY CIVIL ENGINEERING-ARCHITECTURE-URBAN PLANNING SYMPOSIUM 2016, WMCAUS 2016, 2016, 161 :428-433

[6]

Durack JM., 1998, Proceedings of the Fifth Australasian Masonry Conference, P129

[7] Behaviour of cement concrete at high temperature [J].

Hager, I. .

BULLETIN OF THE POLISH ACADEMY OF SCIENCES-TECHNICAL SCIENCES, 2013, 61 (01) :145-154

[8] Concrete strength for fire safety design [J].

Hertz, KD .

MAGAZINE OF CONCRETE RESEARCH, 2005, 57 (08) :445-453

[9] Preliminary views on the potential of foamed concrete as a structural material [J].

Jones, MR ;

McCarthy, A .

MAGAZINE OF CONCRETE RESEARCH, 2005, 57 (01) :21-31

[10] Foamed Concrete Layer as Sub-Structure of Industrial Concrete Floor [J].

Kadela, Marta ;

Kozlowski, Marcin .

WORLD MULTIDISCIPLINARY CIVIL ENGINEERING-ARCHITECTURE-URBAN PLANNING SYMPOSIUM 2016, WMCAUS 2016, 2016, 161 :468-476

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