Implementation of Alternative Mineral Additives in Low-Emission Sustainable Cement Composites

The influence of four naturally occurring mineral additives (zeolite, diatomite, trass and bentonite) on the hydration and properties of cement pastes and mortars was investigated. The materials change the phase composition, heat of hydration (determined by calorimetry) and mechanical properties of...

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Autores principales:	Ewa Kapeluszna, Wojciech Szudek, Paweł Wolka, Adam Zieliński
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	supplementary cementitious materials mineral additives cement hydration zeolite diatomite bentonite Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
Acceso en línea:	https://doaj.org/article/3589665a860b4bd3916c6908d7e7b985
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spelling	oai:doaj.org-article:3589665a860b4bd3916c6908d7e7b9852021-11-11T17:59:46ZImplementation of Alternative Mineral Additives in Low-Emission Sustainable Cement Composites10.3390/ma142164231996-1944https://doaj.org/article/3589665a860b4bd3916c6908d7e7b9852021-10-01T00:00:00Zhttps://www.mdpi.com/1996-1944/14/21/6423https://doaj.org/toc/1996-1944The influence of four naturally occurring mineral additives (zeolite, diatomite, trass and bentonite) on the hydration and properties of cement pastes and mortars was investigated. The materials change the phase composition, heat of hydration (determined by calorimetry) and mechanical properties of composites. After 28 days, the amount of Ca(OH)<sub>2</sub> was reduced by up to 23% and up to 35% more C-S-H was formed, as proved by TG measurements. Differences were observed in the kinetics of heat release, especially for 25% of the addition. In the calorimetric curves, an additional exothermic effect is observed, related to the alteration in the hydration of C<sub>3</sub>A in cement. From the point of view of beneficial influence on mechanical properties of mortars, the additives could be ranked as follows: bentonite < diatomite, zeolite < trass after 2 days and bentonite < diatomite < trass < zeolite after 28 days of curing. The highest compressive strength (58.5 MPa) was observed for the sample with a 10% addition of zeolite. Zeolite, trass, bentonite and diatomite are all pozzolanic materials; however, their activity varies to an extent due to the differences in their specific surface area and the content of the amorphous phase, responsible for the pozzolanic reaction.Ewa KapelusznaWojciech SzudekPaweł WolkaAdam ZielińskiMDPI AGarticlesupplementary cementitious materialsmineral additivescement hydrationzeolitediatomitebentoniteTechnologyTElectrical engineering. Electronics. Nuclear engineeringTK1-9971Engineering (General). Civil engineering (General)TA1-2040MicroscopyQH201-278.5Descriptive and experimental mechanicsQC120-168.85ENMaterials, Vol 14, Iss 6423, p 6423 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	supplementary cementitious materials mineral additives cement hydration zeolite diatomite bentonite Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
spellingShingle	supplementary cementitious materials mineral additives cement hydration zeolite diatomite bentonite Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85 Ewa Kapeluszna Wojciech Szudek Paweł Wolka Adam Zieliński Implementation of Alternative Mineral Additives in Low-Emission Sustainable Cement Composites
description	The influence of four naturally occurring mineral additives (zeolite, diatomite, trass and bentonite) on the hydration and properties of cement pastes and mortars was investigated. The materials change the phase composition, heat of hydration (determined by calorimetry) and mechanical properties of composites. After 28 days, the amount of Ca(OH)<sub>2</sub> was reduced by up to 23% and up to 35% more C-S-H was formed, as proved by TG measurements. Differences were observed in the kinetics of heat release, especially for 25% of the addition. In the calorimetric curves, an additional exothermic effect is observed, related to the alteration in the hydration of C<sub>3</sub>A in cement. From the point of view of beneficial influence on mechanical properties of mortars, the additives could be ranked as follows: bentonite < diatomite, zeolite < trass after 2 days and bentonite < diatomite < trass < zeolite after 28 days of curing. The highest compressive strength (58.5 MPa) was observed for the sample with a 10% addition of zeolite. Zeolite, trass, bentonite and diatomite are all pozzolanic materials; however, their activity varies to an extent due to the differences in their specific surface area and the content of the amorphous phase, responsible for the pozzolanic reaction.
format	article
author	Ewa Kapeluszna Wojciech Szudek Paweł Wolka Adam Zieliński
author_facet	Ewa Kapeluszna Wojciech Szudek Paweł Wolka Adam Zieliński
author_sort	Ewa Kapeluszna
title	Implementation of Alternative Mineral Additives in Low-Emission Sustainable Cement Composites
title_short	Implementation of Alternative Mineral Additives in Low-Emission Sustainable Cement Composites
title_full	Implementation of Alternative Mineral Additives in Low-Emission Sustainable Cement Composites
title_fullStr	Implementation of Alternative Mineral Additives in Low-Emission Sustainable Cement Composites
title_full_unstemmed	Implementation of Alternative Mineral Additives in Low-Emission Sustainable Cement Composites
title_sort	implementation of alternative mineral additives in low-emission sustainable cement composites
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/3589665a860b4bd3916c6908d7e7b985
work_keys_str_mv	AT ewakapeluszna implementationofalternativemineraladditivesinlowemissionsustainablecementcomposites AT wojciechszudek implementationofalternativemineraladditivesinlowemissionsustainablecementcomposites AT pawełwolka implementationofalternativemineraladditivesinlowemissionsustainablecementcomposites AT adamzielinski implementationofalternativemineraladditivesinlowemissionsustainablecementcomposites
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Implementation of Alternative Mineral Additives in Low-Emission Sustainable Cement Composites

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