Thermal behavior of siliceous and ferro-siliceous sacrificial concrete subjected to elevated temperatures

被引：30

作者：

Chu, Hong-yan ^{[1
,2
]}

Jiang, Jin-yang ^{[1
,2
]}

Sun, Wei ^{[1
,2
]}

Zhang, Mingzhong ^{[3
]}

机构：

[1] Southeast Univ, Sch Mat Sci & Engn, Nanjing 211189, Jiangsu, Peoples R China

[2] Jiangsu Key Lab Construct Mat, Nanjing 211189, Jiangsu, Peoples R China

[3] UCL, Dept Civil Environm & Geomat Engn, Mortimer St, London WC1E 6BT, England

来源：

MATERIALS & DESIGN | 2016年 / 95卷

关键词：

Sacrificial concrete; High temperature; Porosity; Mechanical properties; Thermal diffusivity; Damage; HIGH-STRENGTH CONCRETE; HIGH-PERFORMANCE CONCRETE; LIGHTWEIGHT AGGREGATE CONCRETE; SELF-COMPACTING CONCRETE; MECHANICAL-PROPERTIES; POLYPROPYLENE FIBERS; COMPRESSIVE STRENGTH; RESIDUAL STRENGTH; PORE STRUCTURE; STEEL FIBERS;

D O I：

10.1016/j.matdes.2016.01.127

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Siliceous and ferro-siliceous sacrificial concrete (SC) are designed to reduce the leakage potential of radioactive materials in case of severe nuclear accidents. This paper presents an investigation on thermal behavior and damage evolution of SCs subjected to high temperatures. In this study, the microstructure, porosity, high-temperature integrity, mass loss, compressive strength, splitting tensile strength, and thermal diffusivity of SCs were investigated at different elevated temperatures up to 1000 degrees C. Using ultrasonic testing technique, variations of ultrasonic pulse velocity (UPV) propagation in SCs exposed to different high temperatures were obtained. According to definition of damage, a relationship between damage of SC and UPV was derived, eventually concluding a correlation between the damage of SC and high temperatures that SC subjected to. It was found that, (1) the SCs designed have very good performances, and are suitable for use in practice; (2) with temperature increasing, the thermal diffusivity of SCs decreases continually, and the damage evolution of SCs can be described by a Weibull distribution model. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：470 / 480

页数：11

共 45 条

[1] High performance concrete under elevated temperatures [J].

Akca, Abdullah Huzeyfe ;

Zihnioglu, Nilufer Ozyurt .

CONSTRUCTION AND BUILDING MATERIALS, 2013, 44 :317-328

[2] Microstructural examination of the effect of elevated temperature on the concrete containing clinoptilolite [J].

Akcaozoglu, Kubilay ;

Fener, Mustafa ;

Akcaozoglu, Semiha ;

Ocal, Recep .

CONSTRUCTION AND BUILDING MATERIALS, 2014, 72 :316-325

[3] Influence of elevated temperatures on the mechanical properties and microstructure of self consolidating lightweight aggregate concrete [J].

Andic-Cakir, Ozge ;

Hizal, Selim .

CONSTRUCTION AND BUILDING MATERIALS, 2012, 34 :575-583

[4]

[Anonymous], 1994, Dynamic Behavior of Materials, P66

[5]

[Anonymous], 2004, CEMENT CONCRETE RES, DOI DOI 10.1016/j.cemconres.2003.11.010

[6] Young's modulus and Poisson's ratio of concrete at high temperatures: Experimental investigations [J].

Bahr, O. ;

Schaumann, P. ;

Bollen, B. ;

Bracke, J. .

MATERIALS & DESIGN, 2013, 45 :421-429

[7] Reinforced concrete columns exposed to standard fire: Comparison among different constitutive models for concrete at high temperature [J].

Bamonte, P. ;

Lo Monte, F. .

FIRE SAFETY JOURNAL, 2015, 71 :310-323

[8]

Bazant Z.P., 1996, Concrete at High Temperatures: Material Properties and Mathematical Models

[9] Comparison of compressive and splitting tensile strength of high-strength concrete with and without polypropylene fibers heated to high temperatures [J].

Behnood, Ali ;

Ghandehari, Masoud .

FIRE SAFETY JOURNAL, 2009, 44 (08) :1015-1022

[10] Permeability measurement on high strength concrete without and with polypropylene fibers at elevated temperatures using a new test setup [J].

Bosnjak, Josipa ;

Ozbolt, Josko ;

Hahn, Rolf .

CEMENT AND CONCRETE RESEARCH, 2013, 53 :104-111

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