Effect of surface treatment of apricot shell on the performance of lightweight bio-concrete

被引:20
|
作者
Wu, Fan [1 ,2 ]
Yu, Qingliang [1 ]
Liu, Changwu [2 ,3 ,4 ]
Brouwers, H. J. H. [1 ]
Wang, Linfeng [5 ]
机构
[1] Eindhoven Univ Technol, Dept Built Environm, POB 513, NL-5600 MB Eindhoven, Netherlands
[2] Sichuan Univ, Inst Disaster Management & Reconstruct, Hong Kong Polytech Univ, 1 Huanghe Rd, Chengdu 610065, Sichuan, Peoples R China
[3] Sichuan Univ, Coll Water Resource & Hydropower, 24 South Sect 1,Yihuan Rd, Chengdu 610065, Sichuan, Peoples R China
[4] Sichuan Univ, State Key Lab Hydraul & Mt River Engn, 24 South Sect 1,Yihuan Rd, Chengdu 610065, Sichuan, Peoples R China
[5] Chongqing Jiaotong Univ, Key Lab Geol Hazards Mitigat Mt Highway & Waterwa, 66 Xuefu Ave, Chongqing 400074, Peoples R China
关键词
Apricot shell; Lightweight aggregate; Surface treatment; Mechanical properties; Magnesium sulfate attack; OIL PALM SHELL; MECHANICAL-PROPERTIES; MINERAL ADMIXTURES; COARSE AGGREGATE; THAUMASITE FORM; SULFATE ATTACK; PEACH SHELL; STRENGTH; RESISTANCE; MICROSTRUCTURE;
D O I
10.1016/j.conbuildmat.2019.116859
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
The effects of different surface treatment of apricot shell (AS) on the performance of concrete were investigated. Five surface treatments were used to treat the AS, including soaking AS with cement solution (CS), waterproof agent (WP), sodium silicate (SS), white latex (WL), and coating AS with wood oil (WO). The results showed that the WP and CS treatments improved the physical properties, mechanical strength and resistance to magnesium sulfate of apricot shell bio-concrete (ASC). The WP treatment increased the density and decreased the porosity and water absorption of concrete. The compressive strength, splitting tensile strength, flexural strength, modulus of elasticity of the WP treated bioconcrete improved 9.3%, 16.3%, 15.1% and 19.2%, respectively, compared to the untreated mixture. The SS and WL treatments had a negligible influence on the performance of ASC. However, the WO treatment significantly increased the porosity, which resulted in a reduction in mechanical properties and resistance to magnesium sulfate. The WP and CS treatments enhanced the resistance to magnesium sulfate of ASC. It is concluded that the AS treated with waterproof agent is an effective method to enhance both the mechanical properties and durability of the developed lightweight bio-concrete. (C) 2019 Elsevier Ltd. All rights reserved.
引用
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页数:10
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