Strength and microstructural behaviour of concrete incorporating laterite sand in binary blended cement

Abstract This paper explores the performance of concrete using laterite sand as a fine aggregate alternative by replacing manufactured sand (M-sand, produced from hard granite stones by crushing) at 25% intervals ranging from 0% to 100%. Preliminary tests were conducted to ascertain the properties o...

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Autores principales:	Raja,Rajapriya, Vijayan,Ponmalar
Lenguaje:	English
Publicado:	Escuela de Construcción Civil, Pontificia Universidad Católica de Chile 2020
Materias:	Laterite sand M-Sand strength microstructure thermogravimetric analysis
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-915X2020000300422
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spelling	oai:scielo:S0718-915X20200003004222021-02-16Strength and microstructural behaviour of concrete incorporating laterite sand in binary blended cementRaja,RajapriyaVijayan,Ponmalar Laterite sand M-Sand strength microstructure thermogravimetric analysis Abstract This paper explores the performance of concrete using laterite sand as a fine aggregate alternative by replacing manufactured sand (M-sand, produced from hard granite stones by crushing) at 25% intervals ranging from 0% to 100%. Preliminary tests were conducted to ascertain the properties of M-sand and laterite sand that meet the recommended standards for natural aggregates. M30 grade concrete mixtures were produced, and the specimens were cured for 7 and 28 days. The slump test was carried out to assess the workability as per Indian Standards. Furthermore, the concrete specimens were prepared in the form of cubes, cylinders, and beams to assess the mechanical performance. Also, control and optimum mixtures were chosen to understand its morphological characteristics by conducting Scanning Electron Microscopy (SEM), Energy Dispersive X-ray Spectroscopy (EDS), X-Ray Diffraction (XRD) and Thermogravimetric Analysis (TGA). Results showed that higher laterite content led to less workable concrete, and 25% replacement of laterite sand improved by about 12%, 11% and 13% respectively compressive, split-tensile, and flexure strengths. Based on the SEM analysis, the optimum mixture showed a more compact microstructure. The EDS analysis confirmed the presence of various hydration products, while the XRD analysis indicated that the L25 samples had additional peaks of tobermorite and xonotlite. The results of TGA are also in agreement with the assertion.info:eu-repo/semantics/openAccessEscuela de Construcción Civil, Pontificia Universidad Católica de ChileRevista de la construcción v.19 n.3 20202020-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-915X2020000300422en10.7764/rdlc.19.3.422
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Laterite sand M-Sand strength microstructure thermogravimetric analysis
spellingShingle	Laterite sand M-Sand strength microstructure thermogravimetric analysis Raja,Rajapriya Vijayan,Ponmalar Strength and microstructural behaviour of concrete incorporating laterite sand in binary blended cement
description	Abstract This paper explores the performance of concrete using laterite sand as a fine aggregate alternative by replacing manufactured sand (M-sand, produced from hard granite stones by crushing) at 25% intervals ranging from 0% to 100%. Preliminary tests were conducted to ascertain the properties of M-sand and laterite sand that meet the recommended standards for natural aggregates. M30 grade concrete mixtures were produced, and the specimens were cured for 7 and 28 days. The slump test was carried out to assess the workability as per Indian Standards. Furthermore, the concrete specimens were prepared in the form of cubes, cylinders, and beams to assess the mechanical performance. Also, control and optimum mixtures were chosen to understand its morphological characteristics by conducting Scanning Electron Microscopy (SEM), Energy Dispersive X-ray Spectroscopy (EDS), X-Ray Diffraction (XRD) and Thermogravimetric Analysis (TGA). Results showed that higher laterite content led to less workable concrete, and 25% replacement of laterite sand improved by about 12%, 11% and 13% respectively compressive, split-tensile, and flexure strengths. Based on the SEM analysis, the optimum mixture showed a more compact microstructure. The EDS analysis confirmed the presence of various hydration products, while the XRD analysis indicated that the L25 samples had additional peaks of tobermorite and xonotlite. The results of TGA are also in agreement with the assertion.
author	Raja,Rajapriya Vijayan,Ponmalar
author_facet	Raja,Rajapriya Vijayan,Ponmalar
author_sort	Raja,Rajapriya
title	Strength and microstructural behaviour of concrete incorporating laterite sand in binary blended cement
title_short	Strength and microstructural behaviour of concrete incorporating laterite sand in binary blended cement
title_full	Strength and microstructural behaviour of concrete incorporating laterite sand in binary blended cement
title_fullStr	Strength and microstructural behaviour of concrete incorporating laterite sand in binary blended cement
title_full_unstemmed	Strength and microstructural behaviour of concrete incorporating laterite sand in binary blended cement
title_sort	strength and microstructural behaviour of concrete incorporating laterite sand in binary blended cement
publisher	Escuela de Construcción Civil, Pontificia Universidad Católica de Chile
publishDate	2020
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-915X2020000300422
work_keys_str_mv	AT rajarajapriya strengthandmicrostructuralbehaviourofconcreteincorporatinglateritesandinbinaryblendedcement AT vijayanponmalar strengthandmicrostructuralbehaviourofconcreteincorporatinglateritesandinbinaryblendedcement
_version_	1714206311877443584

Strength and microstructural behaviour of concrete incorporating laterite sand in binary blended cement

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