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Title:

Study of Potential Use of Rice Husk Ash (RHA) as a Supplementary Cementitious Material in Concrete Industry

Accession Number:

01662995

Record Type:

Component

Abstract:

The incorporation of supplementary cementitious materials (SCMs) in concrete has become a common practice in recent years in the concrete industry. The Addition of SCMs (e.g., fly ash and silica fume) in concrete as a partial replacement of Ordinary Portland Cement (OPC) improves the mechanical properties of concrete. In Arkansas, there is an imminent deficiency of fly ash supply from local coal plant industries. Therefore, use of rice husk ash (RHA) as an alternative SCMs has been investigated in this study. RHA is an agro-based by-product and treated as a waste material. It has the potential to be used as SCM due to its high silica content. In this study, three different sizes of RHA (600 µm, 150 µm, and 44 µm) with two different percentages (10% and 20%) were used to modify concrete as a partial replacement of ASTM Type I OPC. A predominantly used local Class C fly ash (CFA) was also incorporated in this study for comparative analysis with RHA-modified concrete specimens. Laboratory tests were carried out to determine the basic properties of the fresh concrete mix as well as the mechanical properties of the hardened concrete. To observe the behavior of concrete under adverse weather conditions, tests pertinent to alkali-silica reaction (ASR) and effects of deicing chemicals were conducted in this study. Finally, the One-way ANOVA method was used to determine any significant differences of means of test data. Test results showed that both CFA-modified and finer RHA-modified concrete had better concrete properties than the coarse RHA-modified concrete. The 10% replacement dose was found optimum in this study. Findings of this study are expected to give a better understanding of the use of RHA in producing concrete.

Supplemental Notes:

This paper was sponsored by TRB committee AFN10 Standing Committee on Basic Research and Emerging Technologies Related to Concrete.

Report/Paper Numbers:

18-05328

Language:

English

Authors:

Ahsan, Mohammed Badrul
Hossain, Zahid

Pagination:

17p

Publication Date:

2018

Conference:

Transportation Research Board 97th Annual Meeting

Location: Washington DC, United States
Date: 2018-1-7 to 2018-1-11
Sponsors: Transportation Research Board

Media Type:

Digital/other

Features:

Figures; References; Tables

Uncontrolled Terms:

Rice husk ash

Geographic Terms:

Arkansas

Subject Areas:

Environment; Highways; Materials; Pavements

Source Data:

Transportation Research Board Annual Meeting 2018 Paper #18-05328

Files:

TRIS, TRB, ATRI

Created Date:

Jan 8 2018 11:20AM