Mechanical and thermal properties of green lightweight engineered cementitious composites

被引:198
作者
Huang, Xiaoyan [1 ]
Ranade, Ravi [2 ]
Zhang, Qian [2 ]
Ni, Wen [1 ]
Li, Victor C. [2 ,3 ]
机构
[1] Univ Sci & Technol Beijing, Minist Educ, State Key Lab High Efficient Min & Safety Met Min, Beijing 100083, Peoples R China
[2] Univ Michigan, Dept Civil & Environm Engn, Ann Arbor, MI 48109 USA
[3] Southeast Univ, Sch Transportat, Nanjing 210096, Jiangsu, Peoples R China
关键词
Lightweight engineered cementitious composites; Fly ash cenosphere; Ductility; Green materials; FLY-ASH; ECC;
D O I
10.1016/j.conbuildmat.2013.07.104
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
This study reports the development of green lightweight engineered cementitious composites (GLECC) with high volume of industrial wastes. Three types of industrial wastes including iron ore tailings, fly ash, and fly ash cenosphere were used as aggregates, mineral admixture, and lightweight filler, respectively, in the production of GLECC. The influences of fly ash and fly ash cenosphere contents on the physical, mechanical, and thermal properties of GLECC mixtures were experimentally investigated. Fly ash cenosphere was most advantageous in reducing the density and thermal conductivity, while improving the tensile ductility of GLECC with only a slight reduction in compressive strength. The GLECC mixtures in this study exhibit density of 1649-1820 kg/m(3), tensile strain capacity of 3.3-4.3%, tensile first cracking strength of 2.5-3.6 MPa, ultimate tensile strength of 4.8-5.9 MPa, and compressive strength of 25.0-47.6 MPa at 28 days, depending on the contents of iron ore tailings, fly ash, and fly ash cenosphere. The GLECC mixtures developed in this study utilize industrial wastes up to about 89% by volume of total solid matrix materials and weigh under 1850 kg/m(3) (limit for lightweight concrete classification); yet their mechanical properties are similar to ultra-ductile ECC with added advantage of lower thermal conductivity for energy conservation when used as a building material. (C) 2013 Elsevier Ltd. All rights reserved.
引用
收藏
页码:954 / 960
页数:7
相关论文
共 27 条
[1]   A review on durability properties of strain hardening fibre reinforced cementitious composites (SHFRCC) [J].
Ahmed, Shaikh Faiz Uddin ;
Mihashi, Hirozo .
CEMENT & CONCRETE COMPOSITES, 2007, 29 (05) :365-376
[2]  
[Anonymous], E258410 ASTM
[3]  
[Anonymous], 2008, Recommendations for Design and Construction of High Performance Fiber Reinforced Cement Composites with Multiple Fine Cracks
[4]  
[Anonymous], 1987, 231 ACI
[5]  
[Anonymous], E39912 ASTM
[6]   Thermal properties of high-volume fly ash mortars and concretes [J].
Bentz, D. P. ;
Peltz, M. A. ;
Duran-Herrera, A. ;
Valdez, P. ;
Juarez, C. A. .
JOURNAL OF BUILDING PHYSICS, 2011, 34 (03) :263-275
[7]   Effect of particle size and surface treatment on constitutive properties of polyester-cenosphere composites [J].
Cardoso, RJ ;
Shukla, A ;
Bose, A .
JOURNAL OF MATERIALS SCIENCE, 2002, 37 (03) :603-613
[8]  
Chandra S., 2002, LIGHTWEIGHT AGGREGAT
[9]  
Desai D, 2013, ICCS13 C P
[10]  
Huang X, 2012, J MATER CIVIL ENG, DOI DOI 10.1061/(ASCE)MT.1943-5533.0000674>