Evaluating the Effects of Sugarcane-Bagasse Ash and Rice-Husk Ash on the Mechanical and Durability Properties of Mortar

被引：49

作者：

Joshaghani, Alireza ^{[1
]}

Moeini, Mohammad Amin ^{[2
]}

机构：

[1] Texas A&M Univ, Zachry Dept Civil Engn, College Stn, TX 77840 USA

[2] Amirkabir Univ Technol, Dept Civil Engn, Tehran 158754413, Iran

来源：

JOURNAL OF MATERIALS IN CIVIL ENGINEERING | 2018年 / 30卷 / 07期

关键词：

Mortar; Sugarcane-bagasse ash (SCBA); Rice-husk ash (RHA); Durability; Compressive strength; Rapid chloride migration test (RCMT); Resistivity; SELF-COMPACTING CONCRETE; SUPPLEMENTARY CEMENTITIOUS MATERIAL; FLY-ASH; BLENDED-CEMENT; SILICA FUME; POZZOLANIC ACTIVITY; PERLITE POWDER; PERFORMANCE; STRENGTH; RHA;

D O I：

10.1061/(ASCE)MT.1943-5533.0002317

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The influence of sugarcane-bagasse ash (SCBA) and rice-husk ash (RHA) as cement replacement materials on the mechanical and durability properties of mortars was investigated in this study. Portland cement was replaced by RHA and SCBA at a rate of 10-30% and 10-25% by weight of cementitious materials, respectively. Also, ternary mixtures were prepared by the incorporation of both additives. Replacement dosages were selected based on the former research studies to cast the mortar. Additionally, a control mixture, containing only cement, was prepared to clarify the effectiveness of replacement materials. Compressive strength tests were conducted to evaluate the mechanical performances of the specimens. In addition, the transport tests (water absorption and capillary absorption), electrical resistivity, rapid chloride migration test (RCMT), and acid resistance of mortars were evaluated in order to investigate the effect of SCBA and RHA on the durability properties of mortar. Results showed that RHA was more effective at enhancing the mechanical properties of mortars than SCBA. However, according to the durability tests' results, both SCBA and RHA were found to be effective since ternary mixtures were more durable when compared to the control mixture.

引用

页数：14

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