Influence of low-grade materials as clinker substitute on the rheological behavior, hydration and mechanical performance of ternary cements

This study aims to evaluate the influence of low-grade local materials as clinker substitute in ternary cements, with calcined clay (30 wt%) and limestone (15 wt%), also known as LC³ cements. A coal mining waste (based on 35 wt% kaolinite content, AR) and a dolomitic limestone (LLS) were compared to...

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Autores principales:	C.S. Malacarne, M.A. Longhi, M.R.C. Silva, J.P. Gonçalves, E.D. Rodríguez, A.P. Kirchheim
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Sustainability Ternary cement Waste Coal mining residue Materials of engineering and construction. Mechanics of materials TA401-492
Acceso en línea:	https://doaj.org/article/7542b1ca824445cc8650c8b909e52c31
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spelling	oai:doaj.org-article:7542b1ca824445cc8650c8b909e52c312021-11-18T04:49:00ZInfluence of low-grade materials as clinker substitute on the rheological behavior, hydration and mechanical performance of ternary cements2214-509510.1016/j.cscm.2021.e00776https://doaj.org/article/7542b1ca824445cc8650c8b909e52c312021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2214509521002916https://doaj.org/toc/2214-5095This study aims to evaluate the influence of low-grade local materials as clinker substitute in ternary cements, with calcined clay (30 wt%) and limestone (15 wt%), also known as LC³ cements. A coal mining waste (based on 35 wt% kaolinite content, AR) and a dolomitic limestone (LLS) were compared to more pure materials such as natural clay (constituted by 83% kaolinite content, NC) and high-grade limestone (HLS), respectively. LC³ cements were compared to reference system (45 wt% quartz filler instead of limestone and calcined clays), as well as a fly ash blended cement (40 wt% fly ash, 40FA). Hydration kinetics, water demand, plastic viscosity, and yield stress were evaluated in a fresh state. The fineness of the calcined clays and limestone had a greater impact on the water demand and thixotropy of the pastes than their mineralogical compositions. However, the higher kaolinite content of NC led to higher pozzolanic activity, greater formation of carboaluminate type phases, and compressive strength than LC3 cements with AR. The HLS and LLS had similar impact on the proprieties assessed despite their different mineralogical composition. Thus, both low-grade materials are feasible as raw materials for the production of LC³ type cements with similar performance when compared to conventional cements.C.S. MalacarneM.A. LonghiM.R.C. SilvaJ.P. GonçalvesE.D. RodríguezA.P. KirchheimElsevierarticleSustainabilityTernary cementWasteCoal mining residueMaterials of engineering and construction. Mechanics of materialsTA401-492ENCase Studies in Construction Materials, Vol 15, Iss , Pp e00776- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Sustainability Ternary cement Waste Coal mining residue Materials of engineering and construction. Mechanics of materials TA401-492
spellingShingle	Sustainability Ternary cement Waste Coal mining residue Materials of engineering and construction. Mechanics of materials TA401-492 C.S. Malacarne M.A. Longhi M.R.C. Silva J.P. Gonçalves E.D. Rodríguez A.P. Kirchheim Influence of low-grade materials as clinker substitute on the rheological behavior, hydration and mechanical performance of ternary cements
description	This study aims to evaluate the influence of low-grade local materials as clinker substitute in ternary cements, with calcined clay (30 wt%) and limestone (15 wt%), also known as LC³ cements. A coal mining waste (based on 35 wt% kaolinite content, AR) and a dolomitic limestone (LLS) were compared to more pure materials such as natural clay (constituted by 83% kaolinite content, NC) and high-grade limestone (HLS), respectively. LC³ cements were compared to reference system (45 wt% quartz filler instead of limestone and calcined clays), as well as a fly ash blended cement (40 wt% fly ash, 40FA). Hydration kinetics, water demand, plastic viscosity, and yield stress were evaluated in a fresh state. The fineness of the calcined clays and limestone had a greater impact on the water demand and thixotropy of the pastes than their mineralogical compositions. However, the higher kaolinite content of NC led to higher pozzolanic activity, greater formation of carboaluminate type phases, and compressive strength than LC3 cements with AR. The HLS and LLS had similar impact on the proprieties assessed despite their different mineralogical composition. Thus, both low-grade materials are feasible as raw materials for the production of LC³ type cements with similar performance when compared to conventional cements.
format	article
author	C.S. Malacarne M.A. Longhi M.R.C. Silva J.P. Gonçalves E.D. Rodríguez A.P. Kirchheim
author_facet	C.S. Malacarne M.A. Longhi M.R.C. Silva J.P. Gonçalves E.D. Rodríguez A.P. Kirchheim
author_sort	C.S. Malacarne
title	Influence of low-grade materials as clinker substitute on the rheological behavior, hydration and mechanical performance of ternary cements
title_short	Influence of low-grade materials as clinker substitute on the rheological behavior, hydration and mechanical performance of ternary cements
title_full	Influence of low-grade materials as clinker substitute on the rheological behavior, hydration and mechanical performance of ternary cements
title_fullStr	Influence of low-grade materials as clinker substitute on the rheological behavior, hydration and mechanical performance of ternary cements
title_full_unstemmed	Influence of low-grade materials as clinker substitute on the rheological behavior, hydration and mechanical performance of ternary cements
title_sort	influence of low-grade materials as clinker substitute on the rheological behavior, hydration and mechanical performance of ternary cements
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/7542b1ca824445cc8650c8b909e52c31
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Influence of low-grade materials as clinker substitute on the rheological behavior, hydration and mechanical performance of ternary cements

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