Sugarcane bagasse ash sand (SBAS): Brazilian agroindustrial by-product for use in mortar

被引：60
|
作者：
Almeida, Fernando C. R. [1 ]
Sales, Almir [1 ]
Moretti, Juliana P. [1 ]
Mendes, Paulo C. D. [2 ]
机构：
[1] Univ Fed Sao Carlos, Dept Civil Engn, BR-13565905 Sao Carlos, SP, Brazil
[2] Univ Fed Sao Carlos, Dept Chem, BR-13565905 Sao Carlos, SP, Brazil
来源：
CONSTRUCTION AND BUILDING MATERIALS | 2015年 / 82卷
关键词：
Sugarcane bagasse ash sand; Mortars; Porosity; Accelerated carbonation; Chloride penetration; RICE HUSK ASH; PORTLAND-CEMENT; REPLACEMENT; RESISTANCE; AGGREGATE; CONCRETE; STRENGTH;
D O I：
10.1016/j.conbuildmat.2015.02.039
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
SBAS (sugarcane bagasse ash sand) is the term used for the residue left over from burning sugarcane bagasse. Large amounts of this agro-industrial by-product are generated in Brazilian sugar and ethanol plants, and its disposal is an environmental problem. The application of SBAS as a fine aggregate in mortars can add value to this waste and also reduce the use of natural sand. The growing need to extract natural sand from Brazilian rivers has caused environmental problems. In this article, the effect of SBAS on mortars was investigated, specifically its compressive strength, porosity, carbonation depth and chloride penetration. The present study fills the gap in knowledge on the durability of mortars using different levels of SBAS. The substitution of natural sand by SBAS, especially with content of 30%, can lead to maintenance of mechanical properties, micropore clogging and improvement of the durability of mortars, in comparison with a reference mixture. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：31 / 38
页数：8
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