An Investigation on Effect of Aggregate Grading on Fresh Properties of Self-Consolidating Mortar

Abstract

Self-Consolidating Mortar (SCM) due to its high fluidity is an appropriate material for repairing congested reinforced sections. As providing high fluidity may decrease stability, it's worthwhile to study the major factors affecting its fresh properties. Aggregates occupying a considerable volume of SCM have magnificent effect on its fresh properties. The study done in this paper is concerned with the effect of aggregate grading along with Maximum-Size Aggregate (MSA) on fresh properties of SCM. To this end, two series of aggregate grading has been selected, differing in MSA. Each series comprises a concave and an S-curved grading curve. Mortar mixes with each grading type are made in two fluidity levels of 26 ± 0.5 cm and 31 ± 0.5 cm. Fresh SCM experiments of mini slump flow, mini column segregation; bleeding and segregation probe tests are done with the purpose of comparison between mixes. Obtained results show that the S-curved grading mixes lead to enhanced fresh properties. On the other hand, the greater the MSA, the more probable is the risk of instability in fresh SCM.

Meeting Name

3rd International Conference on Concrete Repair, Rehabilitation and Retrofitting, ICCRRR 2012 (2012: Sep. 3-5, Cape Town, South Africa)

Department(s)

Civil, Architectural and Environmental Engineering

Keywords and Phrases

Self-Consolidating Mortar, Aggregate Grading, Maximum Aggregate Size, Fluidity, Stability

International Standard Book Number (ISBN)

978-041589952-9

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2012 Taylor & Francis, All rights reserved.

Publication Date

01 Sep 2012

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