Mitigation of Alkali–Silica Reaction in Limestone Calcined Clay Cement-Based Mortar

Alkali Silica Reaction Mitigating Properties of Ternary Blended Cement with Calcined Clay and Limestone

RILEM Bookseries - Calcined Clays for Sustainable Concrete ◽

10.1007/978-94-017-9939-3_76 ◽

2015 ◽

pp. 577-577 ◽

Cited By ~ 1

Author(s):

Aurélie R. Favier ◽

Cyrille F. Dunant ◽

Karen L. Scrivener

Keyword(s):

Blended Cement ◽

Alkali Silica Reaction ◽

Calcined Clay

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Alkali Silica Reaction and Sulfate Attack: Expansion of Limestone Calcined Clay Cement

RILEM Bookseries - Calcined Clays for Sustainable Concrete ◽

10.1007/978-94-024-1207-9_26 ◽

2017 ◽

pp. 165-169

Author(s):

A. Favier ◽

K. Scrivener

Keyword(s):

Sulfate Attack ◽

Alkali Silica Reaction ◽

Calcined Clay

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Calcined Clay Pozzolan as an Admixture to Mitigate the Alkali-Silica Reaction in Concrete

Journal of Materials Science and Chemical Engineering ◽

10.4236/msce.2014.25004 ◽

2014 ◽

Vol 02 (05) ◽

pp. 20-26 ◽

Cited By ~ 4

Author(s):

James Sarfo-Ansah ◽

Eugene Atiemo ◽

Kwabena Appiah Boakye ◽

Delali Adjei ◽

Albert A. Adjaottor

Keyword(s):

Alkali Silica Reaction ◽

Calcined Clay

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Properties of Western Cape Concretes with Metakaolin

MATEC Web of Conferences ◽

10.1051/matecconf/201819911011 ◽

2018 ◽

Vol 199 ◽

pp. 11011

Author(s):

Alice T. Bakera ◽

Mark G. Alexander

Keyword(s):

Dilution Effect ◽

Cementitious Materials ◽

Supplementary Cementitious Materials ◽

Superior Performance ◽

Alkali Silica Reaction ◽

Western Cape ◽

Western Cape Province ◽

Calcined Clay ◽

Global Demand ◽

Strength And Durability

A global demand for affordable, sustainable, and durable concrete has resulted in growing use of Supplementary Cementitious Materials (SCMs). In the Western Cape Province of South Africa, the readily available SCM is Granulated Ground Corex Slag (GGCS), although fly ash can also be obtained. However, the availability of these SCMs, particularly GGCS, is subject to market and other extraneous factors, and this may render them vulnerable as sources of SCM for concrete. This points to the need for innovation and investigating other potential SCMs which are economically and environmentally effective. Metakaolin, a high-grade type of calcined clay, emerges as a possible potential future SCM in the Western Cape. This study aimed at investigating the influence of a locally available metakaolin on mechanical (compressive and tensile strength), and durability (concrete penetrability and potential to mitigate Alkali Silica Reaction (ASR)) properties of Western Cape concrete. In comparison to GGCS, concretes with metakaolin showed superior performance in both mechanical and durability properties. This was attributed to its role in concrete in terms of accelerating hydration reactions, pozzolanic activity, and dilution effect. Metakaolin can therefore be regarded as a beneficial substitute for GGCS in Western Cape concrete. However, questions that remain include cost-effectiveness, and the awareness and willingness of industry to incorporate this material.

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