Effects of the mechanical milling method on transport properties of self-compacting concrete containing perlite powder as a supplementary cementitious material

Abstract Perlite, a natural glassy volcanic rock could be used as supplementary cementitious material to reduce environmental pollution and the consumption of precious natural resources in the concrete industries. The aim of this work is to assess natural perlite used as 50% aggregates substitution by volume (sand or gravel) and as 10%, 15%, 20% cement substitution in self-compacting concrete. Workability characteristics and mechanical properties were analysed. Results showed that replacing 50% of natural aggregates with 50% of perlite aggregates or substituting cement with 10% of perlite powder generated the best workability characteristics and improved compressive, flexural strength, and elastic modulus of concrete at 28 days. Moreover, the results were combined to develop correlations that prove to be good between mechanical properties of self-compacting. Using perlite as aggregates offers a new source of supply and saves natural aggregates. Also, perlite used as cement substitution helps to reduce PC consumption, cost, and CO2 emission.

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Effect of using metakaolin as supplementary cementitious material and recycled CRT funnel glass as fine aggregate on the durability of green self-compacting concrete

Construction and Building Materials ◽

10.1016/j.conbuildmat.2019.117802 ◽

2020 ◽

Vol 235 ◽

pp. 117802 ◽

Cited By ~ 2

Author(s):

Younes Ouldkhaoua ◽

Benchaa Benabed ◽

Rajab Abousnina ◽

El-Hadj Kadri ◽

Jamal Khatib

Keyword(s):

Cementitious Material ◽

Fine Aggregate ◽

Self Compacting Concrete ◽

Supplementary Cementitious Material

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Influence of Metashale as Cement Replacement on the Hygric Transport Properties of Concrete

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1054.188 ◽

2014 ◽

Vol 1054 ◽

pp. 188-193 ◽

Cited By ~ 2

Author(s):

Dana Koňáková ◽

Veronika Hovorková ◽

Eva Vejmelková ◽

Martin Keppert ◽

Robert Černý

Keyword(s):

Transport Properties ◽

High Performance ◽

High Performance Concrete ◽

Cementitious Material ◽

Raw Material ◽

Replacement Level ◽

Supplementary Cementitious Material ◽

Cement Replacement ◽

Concrete Properties ◽

Clay Materials

This article is focused on the utilization of metashale as a supplementary cementitious material in concrete. Metashale as well as metakaolin is a product originating in the burning of clay materials, but in metashale production, the raw material is shale (aluminosilicates with granularity up to 0.02 mm). Four mixtures with cement replacement ranging from 0% up to 60% are designed and their properties are examined. Basic physical properties, mechanical strength, as well as hygric transport properties are measured and evaluated, in order to determine the influence of metashale on concrete properties. Experimental results show that for low amounts of cement replacement, metashale admixture leads to the improvement of studied material characteristics. When the material contains 40% of metashale, studied characteristics have almost similar values as the reference material. The worst values of measured properties are obtained for the replacement level of 60%. Nevertheless, all studied materials have appropriate properties to be applicable as high performance concrete.

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