Effects of chemical and mineral admixtures on the foam indexes of cement-based materials

Effects of chemical and mineral admixtures on the foam indexes of cement-based materials

Air in cement-based materials is one of the important parameters affecting its properties in fresh and hardened states. Various types of chemical and mineral admixtures have been combined and used in cement-based materials. This makes the formation and stability of air bubble in fresh cement-based m...

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Main Authors: Hai Huang, Qiang Yuan, Dehua Deng, Jianwei Peng, Yanling Huang
Format: Article
Language:English
Published: Elsevier 2019-12-01
Series:Case Studies in Construction Materials
Online Access:http://www.sciencedirect.com/science/article/pii/S2214509518304182
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spelling doaj-aa52b6028e9e4beeb53b6e4af6103a1f2020-11-25T00:45:35ZengElsevierCase Studies in Construction Materials2214-50952019-12-0111Effects of chemical and mineral admixtures on the foam indexes of cement-based materialsHai Huang0Qiang Yuan1Dehua Deng2Jianwei Peng3Yanling Huang4National Engineering Laboratory for High Speed Railway Construction, School of Civil Engineering, Central South University, Changsha 410075, China; Anhui Engineering Material Technology Co. Ltd of CTCE Group, Hefei 230023, ChinaNational Engineering Laboratory for High Speed Railway Construction, School of Civil Engineering, Central South University, Changsha 410075, China; Corresponding author.National Engineering Laboratory for High Speed Railway Construction, School of Civil Engineering, Central South University, Changsha 410075, ChinaAnhui Engineering Material Technology Co. Ltd of CTCE Group, Hefei 230023, ChinaNational Engineering Laboratory for High Speed Railway Construction, School of Civil Engineering, Central South University, Changsha 410075, ChinaAir in cement-based materials is one of the important parameters affecting its properties in fresh and hardened states. Various types of chemical and mineral admixtures have been combined and used in cement-based materials. This makes the formation and stability of air bubble in fresh cement-based materials very complicated, and the control of air void in cement-based materials difficult. In this paper, air-related issues of cement-based materials were evaluated by foam indexes and surface tension test. The effects of mineral admixtures, including slag, fly ash and silica fume, and chemical admixtures, including superplasticizers, viscosity-modified admixtures and air-entraining admixtures on the foam indexes were studied. Results showed that surface tension is one of the factors affecting foam ability and foam stability, but not decisive one. Foam ability and foam stability of cement-based materials depend on many factors, such as types of chemical admixtures, compatibility of chemical admixtures, fineness and its chemical compositions of mineral admixtures. Keywords: Chemical admixtures, Mineral admixtures, Cement-based materials, Air, Surface tension, Foam ability, Foam stabilityhttp://www.sciencedirect.com/science/article/pii/S2214509518304182
collection DOAJ
language English
format Article
sources DOAJ
author Hai Huang
Qiang Yuan
Dehua Deng
Jianwei Peng
Yanling Huang
spellingShingle Hai Huang
Qiang Yuan
Dehua Deng
Jianwei Peng
Yanling Huang
Effects of chemical and mineral admixtures on the foam indexes of cement-based materials
Case Studies in Construction Materials
author_facet Hai Huang
Qiang Yuan
Dehua Deng
Jianwei Peng
Yanling Huang
author_sort Hai Huang
title Effects of chemical and mineral admixtures on the foam indexes of cement-based materials
title_short Effects of chemical and mineral admixtures on the foam indexes of cement-based materials
title_full Effects of chemical and mineral admixtures on the foam indexes of cement-based materials
title_fullStr Effects of chemical and mineral admixtures on the foam indexes of cement-based materials
title_full_unstemmed Effects of chemical and mineral admixtures on the foam indexes of cement-based materials
title_sort effects of chemical and mineral admixtures on the foam indexes of cement-based materials
publisher Elsevier
series Case Studies in Construction Materials
issn 2214-5095
publishDate 2019-12-01
description Air in cement-based materials is one of the important parameters affecting its properties in fresh and hardened states. Various types of chemical and mineral admixtures have been combined and used in cement-based materials. This makes the formation and stability of air bubble in fresh cement-based materials very complicated, and the control of air void in cement-based materials difficult. In this paper, air-related issues of cement-based materials were evaluated by foam indexes and surface tension test. The effects of mineral admixtures, including slag, fly ash and silica fume, and chemical admixtures, including superplasticizers, viscosity-modified admixtures and air-entraining admixtures on the foam indexes were studied. Results showed that surface tension is one of the factors affecting foam ability and foam stability, but not decisive one. Foam ability and foam stability of cement-based materials depend on many factors, such as types of chemical admixtures, compatibility of chemical admixtures, fineness and its chemical compositions of mineral admixtures. Keywords: Chemical admixtures, Mineral admixtures, Cement-based materials, Air, Surface tension, Foam ability, Foam stability
url http://www.sciencedirect.com/science/article/pii/S2214509518304182
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AT qiangyuan effectsofchemicalandmineraladmixturesonthefoamindexesofcementbasedmaterials
AT dehuadeng effectsofchemicalandmineraladmixturesonthefoamindexesofcementbasedmaterials
AT jianweipeng effectsofchemicalandmineraladmixturesonthefoamindexesofcementbasedmaterials
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