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Title:

Evaluation of ASTM Methods for Detection of Alkali-Silica Reaction in Alkali-Activated Concrete

Accession Number:

01628816

Record Type:

Component

Abstract:

Recently, increased awareness on the significance of developing sustainable materials for construction has renewed the interest in exploring Alkali Activated Concrete (AAC), a concrete that contains no cement, but only industrial by-products such as fly ash and slag, as a low energy alternative to the conventional concrete. Although the feasibility of making alkali-activated concrete with acceptable strength and mechanical properties is well documented, the information regarding the resistance to alkali silica reaction (ASR) is far from comprehensive and there is a need to increase the understanding of this durability problem. This study compares the resistance of alkali activated slag concrete (AASC) with ordinary portland cement concrete (OPCC) while exposed to ASR under ASTM C1293 and ASTM C1567 tests. The prism length expansion, mass change and dynamic modulus of elasticity were measured in order to quantify the deterioration in AASC when exposed to ASR. In addition to that, influence of activator parameters to the resistance of ASR in AASC was also evaluated in this study. Generally, it shows that ASR is not occurring in AASC unless reactive aggregate is used in the mixture. Additionally, compared to ASTM C1567, ASTM C1293 seems more appropriate on detecting the occurrence of ASR in alkali activated slag binder system.

Supplemental Notes:

This paper was sponsored by TRB committee AFN30 Standing Committee on Durability of Concrete.

Monograph Accession #:

01618707

Report/Paper Numbers:

17-04375

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Li, Zihui
Thomas, R J
Lezama, Diego
Peethamparan, Sulapha

Pagination:

17p

Publication Date:

2017

Conference:

Transportation Research Board 96th Annual Meeting

Location: Washington DC, United States
Date: 2017-1-8 to 2017-1-12
Sponsors: Transportation Research Board

Media Type:

Digital/other

Features:

Figures; References; Tables

Identifier Terms:

ASTM C 1293; ASTM C 1567

Subject Areas:

Highways; Materials

Source Data:

Transportation Research Board Annual Meeting 2017 Paper #17-04375

Files:

TRIS, TRB, ATRI

Created Date:

Dec 8 2016 11:40AM