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Compatibility of superplasticizers with cement paste and concrete mixes containing Type I and Type V cement, and volcanic ash

Compatibility of superplasticizers with cement paste and concrete mixes containing Type I and... The compatibility of different families of superplasticizers with various types of cement and mineral admixtures is the prime criterion for selecting a suitable superplasticizer (SP) at an optimum dosage in a concrete mix. The comparative performance of polycarboxylate (PCE) and naphthalene (SNF)-based superplasticizers on the various properties of cement paste and concrete mix containing Type I and Type V cement and volcanic ash (VA) were investigated in this study. A difference in crystalline phase was observed with the addition of superplasticizer and volcanic ash to Type V cement, indicating the presence of Gismondine in the studied cases. Scanning electron microscopy analysis showed that the PCE-based superplasticizer produced a relatively compact microstructure with Type I cement than with Type V cement. In contrast, the SNF-based superplasticizer had a compact microstructure with Type V cement. In terms of microstructural modification, compressive strength, sorptivity, and hydration characteristics, the PCE-VA mixture performed better with Type I cement, whereas the SNF-VA mixture displayed better results for Type V cement. The study highlights the effects of different combinations of cement-SP-VA mixtures and the importance of examining these effects to select concrete mix with desired properties. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Innovative Infrastructure Solutions Springer Journals

Compatibility of superplasticizers with cement paste and concrete mixes containing Type I and Type V cement, and volcanic ash

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Publisher
Springer Journals
Copyright
Copyright © Springer Nature Switzerland AG 2022
ISSN
2364-4176
eISSN
2364-4184
DOI
10.1007/s41062-022-00855-3
Publisher site
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Abstract

The compatibility of different families of superplasticizers with various types of cement and mineral admixtures is the prime criterion for selecting a suitable superplasticizer (SP) at an optimum dosage in a concrete mix. The comparative performance of polycarboxylate (PCE) and naphthalene (SNF)-based superplasticizers on the various properties of cement paste and concrete mix containing Type I and Type V cement and volcanic ash (VA) were investigated in this study. A difference in crystalline phase was observed with the addition of superplasticizer and volcanic ash to Type V cement, indicating the presence of Gismondine in the studied cases. Scanning electron microscopy analysis showed that the PCE-based superplasticizer produced a relatively compact microstructure with Type I cement than with Type V cement. In contrast, the SNF-based superplasticizer had a compact microstructure with Type V cement. In terms of microstructural modification, compressive strength, sorptivity, and hydration characteristics, the PCE-VA mixture performed better with Type I cement, whereas the SNF-VA mixture displayed better results for Type V cement. The study highlights the effects of different combinations of cement-SP-VA mixtures and the importance of examining these effects to select concrete mix with desired properties.

Journal

Innovative Infrastructure Solutions – Springer Journals

Published: Aug 1, 2022

Keywords: Hydration; Microstructure; Saturation dosage; Sorptivity; Superplasticizer; Volcanic ash

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