An investigation on mechanical and durability properties of mortars containing nano and micro RHA

被引：46
作者：
Balapour, Mohammad [1 ]
Ramezanianpour, AliAkbar [2 ]
Hajibandeh, Erfan [3 ]
机构：
[1] Amirkabir Univ Technol, Dept Civil Engn, Construct Engn & Management, Tehran, Iran
[2] Amirkabir Univ Technol, Dept Civil Engn, Concrete Technol & Durabil Res Ctr, Tehran, Iran
[3] Amirkabir Univ Technol, Dept Civil Engn, Tehran, Iran
来源：
CONSTRUCTION AND BUILDING MATERIALS | 2017年 / 132卷
关键词：
Rice husk ash; Nano; Micro; Durability; Mortar; Mechanical properties; RICE HUSK ASH; CEMENT MORTARS; COMPRESSIVE STRENGTH; BLENDED CEMENT; CONCRETE; MICROSTRUCTURE; NANO-SIO2; REPLACEMENT; PERFORMANCE; NANOSILICA;
D O I：
10.1016/j.conbuildmat.2016.12.017
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
This study investigated the effects of nano rice husk ash (NRHA) and micro rice husk ash (MRHA) on chloride permeability, electrical resistivity, capillary absorption and compressive strength of mortars. It was found that the incorporation of NRHA and MRHA enhanced mortar performance in the long term, whereas NRHA contributed to considerable enhancements at both early and long-term ages. Results proved that the strength and durability properties of mortars containing NRHA up to 7.5% levels of replacement by weight of cement gradually enhanced in comparison with control mix. However, mortars incorporating 2.5% NRHA together with 12.5% MRHA demonstrated the best improvements for durability and strength development at the age of 90 days. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：470 / 477
页数：8
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