The Effect of Curing Conditions on the Properties of Cement-Based Composites Blended with Waste Marble Dust

Nadhir Toubal Seghir,Andrzej Żak,Aleksandra Krolicka,Mekki Mellas,Łukasz Sadowski

doi:10.1007/s11837-018-3254-9

Nadhir Toubal Seghir, Andrzej Żak + Show 3 more

Open Access

https://doi.org/10.1007/s11837-018-3254-9

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Abstract

The goal of this article is to study the effect of curing conditions on the properties of cement-based composites blended with waste marble dust (WMD). WMD was added to cement-based composites with different ratios of replacement, and two of the most commonly used curing conditions were applied. Half of the composites were cured in water at a temperature of 20 ± 1°C, and the other half of the composites were cured in air at a temperature equal to 22 ± 2°C and relative humidity (RH) equal to 20 ± 1%. To achieve the goals of the study, the composites were tested after 3 days, 7 days, 28 days, and 65 days of curing for their apparent density (ϒad), porosity (pm) and compressive strength (fcd). Finally, the obtained macroscopic observations were validated using scanning electron microscopy. It was found that the water curing conditions were beneficial for the cement-based composites and gave satisfactory results compared with the air-curing conditions.

Highlights

It is commonly known that the hardening process and formation of the microstructure of cementbased composites are significantly influenced by the curing conditions.[1]
The goal of the presented study was to investigate the effect of curing conditions on the properties of a cement-based composite blended with waste marble dust (WMD)
The water-curing conditions resulted in higher compressive strength of cement paste blended with WMD compared with the air curing conditions

Summary

Introduction

It is commonly known that the hardening process and formation of the microstructure of cementbased composites are significantly influenced by the curing conditions.[1]. Composites are usually immersed in water for curing, whereas on a construction site, composites cure mostly in air conditions. These two methods of curing are most commonly used for cement-based composites. The curing conditions affected the development of the properties of ordinary cementbased composites,[16] composites modified by fly ash,[17] composites modified by recycled aggregates[18,19] and a composite’s long-term compressive strength.[20] This was the case under hot (Published online November 27, 2018)

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