Development of Concrete Incorporating Recycled Aggregates, Hydrated Lime and Natural Volcanic Pozzolan

Recycling of construction and demolition waste is a central point of discussion throughout the world. The application of recycled concrete as partial replacement of mineral aggregates in concrete mixes is one of the alternatives in the reduction of pollution and savings in carbon emissions. The comb...

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Autores principales:	Natividad Garcia-Troncoso, Bowen Xu, Wilhenn Probst-Pesantez
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	recycled concrete volcanic pozzolan destructive and non-destructive tests cost savings sustainability Technology T
Acceso en línea:	https://doaj.org/article/e5ad7af7ba9840aabf4460d3477c54b5
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spelling	oai:doaj.org-article:e5ad7af7ba9840aabf4460d3477c54b52021-11-25T17:58:50ZDevelopment of Concrete Incorporating Recycled Aggregates, Hydrated Lime and Natural Volcanic Pozzolan10.3390/infrastructures61101552412-3811https://doaj.org/article/e5ad7af7ba9840aabf4460d3477c54b52021-11-01T00:00:00Zhttps://www.mdpi.com/2412-3811/6/11/155https://doaj.org/toc/2412-3811Recycling of construction and demolition waste is a central point of discussion throughout the world. The application of recycled concrete as partial replacement of mineral aggregates in concrete mixes is one of the alternatives in the reduction of pollution and savings in carbon emissions. The combined influence of the recycled crushed concrete, lime, and natural pozzolana on the mechanical and sustainable properties of concrete materials is firstly proposed in this study. In this research, unconventional construction materials are employed to produce concrete: the recycled crushed concrete is used as coarse aggregate, while lime and natural pozzolana are used as a partial replacement for cement. Substitutions of 10%, 20%, 50% of gravel are made with recycled aggregates, and 2%, 5%, 10% of cement with lime and natural pozzolan. Tests on the fresh and hardened properties, destructive (compressive strength) and non-destructive tests (sclerometer rebound and ultrasound) of mixtures are carried out. It is shown that the use of recycled materials can provide an increase in compressive strength of up to 34% with respect to conventional concrete. Life cycle cost and sustainability assessments indicate that concrete materials incorporating recycled aggregate possess good economic and environmental impacts.Natividad Garcia-TroncosoBowen XuWilhenn Probst-PesantezMDPI AGarticlerecycled concretevolcanic pozzolandestructive and non-destructive testscost savingssustainabilityTechnologyTENInfrastructures, Vol 6, Iss 155, p 155 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	recycled concrete volcanic pozzolan destructive and non-destructive tests cost savings sustainability Technology T
spellingShingle	recycled concrete volcanic pozzolan destructive and non-destructive tests cost savings sustainability Technology T Natividad Garcia-Troncoso Bowen Xu Wilhenn Probst-Pesantez Development of Concrete Incorporating Recycled Aggregates, Hydrated Lime and Natural Volcanic Pozzolan
description	Recycling of construction and demolition waste is a central point of discussion throughout the world. The application of recycled concrete as partial replacement of mineral aggregates in concrete mixes is one of the alternatives in the reduction of pollution and savings in carbon emissions. The combined influence of the recycled crushed concrete, lime, and natural pozzolana on the mechanical and sustainable properties of concrete materials is firstly proposed in this study. In this research, unconventional construction materials are employed to produce concrete: the recycled crushed concrete is used as coarse aggregate, while lime and natural pozzolana are used as a partial replacement for cement. Substitutions of 10%, 20%, 50% of gravel are made with recycled aggregates, and 2%, 5%, 10% of cement with lime and natural pozzolan. Tests on the fresh and hardened properties, destructive (compressive strength) and non-destructive tests (sclerometer rebound and ultrasound) of mixtures are carried out. It is shown that the use of recycled materials can provide an increase in compressive strength of up to 34% with respect to conventional concrete. Life cycle cost and sustainability assessments indicate that concrete materials incorporating recycled aggregate possess good economic and environmental impacts.
format	article
author	Natividad Garcia-Troncoso Bowen Xu Wilhenn Probst-Pesantez
author_facet	Natividad Garcia-Troncoso Bowen Xu Wilhenn Probst-Pesantez
author_sort	Natividad Garcia-Troncoso
title	Development of Concrete Incorporating Recycled Aggregates, Hydrated Lime and Natural Volcanic Pozzolan
title_short	Development of Concrete Incorporating Recycled Aggregates, Hydrated Lime and Natural Volcanic Pozzolan
title_full	Development of Concrete Incorporating Recycled Aggregates, Hydrated Lime and Natural Volcanic Pozzolan
title_fullStr	Development of Concrete Incorporating Recycled Aggregates, Hydrated Lime and Natural Volcanic Pozzolan
title_full_unstemmed	Development of Concrete Incorporating Recycled Aggregates, Hydrated Lime and Natural Volcanic Pozzolan
title_sort	development of concrete incorporating recycled aggregates, hydrated lime and natural volcanic pozzolan
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/e5ad7af7ba9840aabf4460d3477c54b5
work_keys_str_mv	AT natividadgarciatroncoso developmentofconcreteincorporatingrecycledaggregateshydratedlimeandnaturalvolcanicpozzolan AT bowenxu developmentofconcreteincorporatingrecycledaggregateshydratedlimeandnaturalvolcanicpozzolan AT wilhennprobstpesantez developmentofconcreteincorporatingrecycledaggregateshydratedlimeandnaturalvolcanicpozzolan
_version_	1718411774897684480

Development of Concrete Incorporating Recycled Aggregates, Hydrated Lime and Natural Volcanic Pozzolan

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