Effect of sawdust ash and laterite on the electrical resistivity of concrete

This study is an experimental research aimed at evaluating the electrical resistivity of concrete containing laterite and sawdust ash (SDA). Laterite was used to partially replace the sand in concrete while SDA partially replaced cement as a supplementary cementitious material. Cylindrical samples o...

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Autor principal:	Babafemi Adewumi
Formato:	article
Lenguaje:	EN
Publicado:	Peter the Great St. Petersburg Polytechnic University 2021
Materias:	laterite sawdust ash electrical resistivity durability water-cement ratio laterised concrete Engineering (General). Civil engineering (General) TA1-2040
Acceso en línea:	https://doaj.org/article/0c81422b995e4b7cb760195236a3c359
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spelling	oai:doaj.org-article:0c81422b995e4b7cb760195236a3c3592021-11-12T15:54:04ZEffect of sawdust ash and laterite on the electrical resistivity of concrete2712-817210.34910/MCE.105.2https://doaj.org/article/0c81422b995e4b7cb760195236a3c3592021-09-01T00:00:00Zhttp://engstroy.spbstu.ru/article/2021.105.02/https://doaj.org/toc/2712-8172This study is an experimental research aimed at evaluating the electrical resistivity of concrete containing laterite and sawdust ash (SDA). Laterite was used to partially replace the sand in concrete while SDA partially replaced cement as a supplementary cementitious material. Cylindrical samples of Ø100 by 200 mm were used to evaluate the singular and combined influences of water-binder ratio, SDA and laterite on the electrical resistivity of concrete as a measure of durability. The sawdust ash content of 0, 10, 20 and 30% by weight of cement was considered while an optimum 30 % laterite content was examined and water-binder ratios of 0.35, 0.50 and 0.65. Additionally, some samples were cured in 1 %, 3 % and 5 % of sodium chloride salt (NaCl) to simulate the marine environment. The electrical resistivity test was conducted using the four-electrode method (Wenner’s Method) in accordance with ASTM C1202. The results of the investigations revealed that the resistivity of concrete generally increases with age at all replacement levels with optimum performance at a water-binder ratio of 0.50. Also, the results show that an increase in the sawdust ash content reduces the resistivity of concrete while the addition of laterite at 30% increases the electrical resistivity of concrete at increased water content. Chloride ion exposure generally reduces the ER of concrete while laterite reduces the impact of the chloride ion.Babafemi AdewumiPeter the Great St. Petersburg Polytechnic Universityarticlelateritesawdust ashelectrical resistivitydurabilitywater-cement ratiolaterised concreteEngineering (General). Civil engineering (General)TA1-2040ENMagazine of Civil Engineering, Vol None, Iss 05 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	laterite sawdust ash electrical resistivity durability water-cement ratio laterised concrete Engineering (General). Civil engineering (General) TA1-2040
spellingShingle	laterite sawdust ash electrical resistivity durability water-cement ratio laterised concrete Engineering (General). Civil engineering (General) TA1-2040 Babafemi Adewumi Effect of sawdust ash and laterite on the electrical resistivity of concrete
description	This study is an experimental research aimed at evaluating the electrical resistivity of concrete containing laterite and sawdust ash (SDA). Laterite was used to partially replace the sand in concrete while SDA partially replaced cement as a supplementary cementitious material. Cylindrical samples of Ø100 by 200 mm were used to evaluate the singular and combined influences of water-binder ratio, SDA and laterite on the electrical resistivity of concrete as a measure of durability. The sawdust ash content of 0, 10, 20 and 30% by weight of cement was considered while an optimum 30 % laterite content was examined and water-binder ratios of 0.35, 0.50 and 0.65. Additionally, some samples were cured in 1 %, 3 % and 5 % of sodium chloride salt (NaCl) to simulate the marine environment. The electrical resistivity test was conducted using the four-electrode method (Wenner’s Method) in accordance with ASTM C1202. The results of the investigations revealed that the resistivity of concrete generally increases with age at all replacement levels with optimum performance at a water-binder ratio of 0.50. Also, the results show that an increase in the sawdust ash content reduces the resistivity of concrete while the addition of laterite at 30% increases the electrical resistivity of concrete at increased water content. Chloride ion exposure generally reduces the ER of concrete while laterite reduces the impact of the chloride ion.
format	article
author	Babafemi Adewumi
author_facet	Babafemi Adewumi
author_sort	Babafemi Adewumi
title	Effect of sawdust ash and laterite on the electrical resistivity of concrete
title_short	Effect of sawdust ash and laterite on the electrical resistivity of concrete
title_full	Effect of sawdust ash and laterite on the electrical resistivity of concrete
title_fullStr	Effect of sawdust ash and laterite on the electrical resistivity of concrete
title_full_unstemmed	Effect of sawdust ash and laterite on the electrical resistivity of concrete
title_sort	effect of sawdust ash and laterite on the electrical resistivity of concrete
publisher	Peter the Great St. Petersburg Polytechnic University
publishDate	2021
url	https://doaj.org/article/0c81422b995e4b7cb760195236a3c359
work_keys_str_mv	AT babafemiadewumi effectofsawdustashandlateriteontheelectricalresistivityofconcrete
_version_	1718430353844076544

Effect of sawdust ash and laterite on the electrical resistivity of concrete

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