Study on setting time and compressive strength performance of ordinary portland cement (OPC) paste containing sodium chloride

The presence of impurities in concrete system can possess a damaging effect to the structural integrity of concrete material. Alkali silica reaction, scaling, and corrosion are among the deleterious effect caused by the ingression of internal or external substance to the concrete system. Sodium c...

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Main Author:	Rahimah, Embong
Format:	Undergraduates Project Papers
Language:	English
Published:	2014
Subjects:	TA Engineering (General). Civil engineering (General)
Online Access:	http://umpir.ump.edu.my/id/eprint/10110/ http://umpir.ump.edu.my/id/eprint/10110/ http://umpir.ump.edu.my/id/eprint/10110/1/RAHIMAH%20BINTI%20EMBONG%20%23.PDF

id	ump-10110
recordtype	eprints
spelling	ump-101102015-09-23T00:47:17Z http://umpir.ump.edu.my/id/eprint/10110/ Study on setting time and compressive strength performance of ordinary portland cement (OPC) paste containing sodium chloride Rahimah, Embong TA Engineering (General). Civil engineering (General) The presence of impurities in concrete system can possess a damaging effect to the structural integrity of concrete material. Alkali silica reaction, scaling, and corrosion are among the deleterious effect caused by the ingression of internal or external substance to the concrete system. Sodium chloride or salt is one of the external agents involved in the process; hence its excessive amount in concrete system is strictly prohibited. Nevertheless, concrete containing salt water is generally known for the higher early-strength, yet lower ultimate strength than plain concrete. Meanwhile, study on the detail mechanism in early age properties are scarcely available, particularly at low salt concentration. Therefore this research was conducted to provide better understanding in the effect of salt water to the hardening mechanism of Portland cement paste and to obtain the optimum salt inclusion that contributes to the enhancement of concrete properties. Analysis on the performance of this reagent was conducted via setting time, compressive strength, and porosity test. Based on the setting time analysis, the inclusion of sodium chloride can extend the initial setting time of cement paste longer than control specimen. Obstruction on the formation of calcium silicate hydrate gel by sodium and chloride ion was one of the possible causes to this phenomenon. Acceleration on the compressive strength development by sodium chloride was also detected. It appears that sodium chloride was able to de-flocculate the coagulated cement particles and reduced the viscosities of cement slurries; hence resulted in faster early hydration process. Based on the results of this research, it can be concluded that sodium chloride inclusion is beneficial to the workability and compressive strength performance of cement paste binder at certain concentration. Improvement of compressive strength was achieved via faster dissolution and hydration of cement particle due to dispersant characteristic presented by sodium chloride. 2014-06 Undergraduates Project Papers NonPeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/10110/1/RAHIMAH%20BINTI%20EMBONG%20%23.PDF Rahimah, Embong (2014) Study on setting time and compressive strength performance of ordinary portland cement (OPC) paste containing sodium chloride. Faculty of Civil Engineering and Earth Resources, Universiti Malaysia Pahang. http://iportal.ump.edu.my/lib/item?id=chamo:84809&theme=UMP2
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English
topic	TA Engineering (General). Civil engineering (General)
spellingShingle	TA Engineering (General). Civil engineering (General) Rahimah, Embong Study on setting time and compressive strength performance of ordinary portland cement (OPC) paste containing sodium chloride
description	The presence of impurities in concrete system can possess a damaging effect to the structural integrity of concrete material. Alkali silica reaction, scaling, and corrosion are among the deleterious effect caused by the ingression of internal or external substance to the concrete system. Sodium chloride or salt is one of the external agents involved in the process; hence its excessive amount in concrete system is strictly prohibited. Nevertheless, concrete containing salt water is generally known for the higher early-strength, yet lower ultimate strength than plain concrete. Meanwhile, study on the detail mechanism in early age properties are scarcely available, particularly at low salt concentration. Therefore this research was conducted to provide better understanding in the effect of salt water to the hardening mechanism of Portland cement paste and to obtain the optimum salt inclusion that contributes to the enhancement of concrete properties. Analysis on the performance of this reagent was conducted via setting time, compressive strength, and porosity test. Based on the setting time analysis, the inclusion of sodium chloride can extend the initial setting time of cement paste longer than control specimen. Obstruction on the formation of calcium silicate hydrate gel by sodium and chloride ion was one of the possible causes to this phenomenon. Acceleration on the compressive strength development by sodium chloride was also detected. It appears that sodium chloride was able to de-flocculate the coagulated cement particles and reduced the viscosities of cement slurries; hence resulted in faster early hydration process. Based on the results of this research, it can be concluded that sodium chloride inclusion is beneficial to the workability and compressive strength performance of cement paste binder at certain concentration. Improvement of compressive strength was achieved via faster dissolution and hydration of cement particle due to dispersant characteristic presented by sodium chloride.
format	Undergraduates Project Papers
author	Rahimah, Embong
author_facet	Rahimah, Embong
author_sort	Rahimah, Embong
title	Study on setting time and compressive strength performance of ordinary portland cement (OPC) paste containing sodium chloride
title_short	Study on setting time and compressive strength performance of ordinary portland cement (OPC) paste containing sodium chloride
title_full	Study on setting time and compressive strength performance of ordinary portland cement (OPC) paste containing sodium chloride
title_fullStr	Study on setting time and compressive strength performance of ordinary portland cement (OPC) paste containing sodium chloride
title_full_unstemmed	Study on setting time and compressive strength performance of ordinary portland cement (OPC) paste containing sodium chloride
title_sort	study on setting time and compressive strength performance of ordinary portland cement (opc) paste containing sodium chloride
publishDate	2014
url	http://umpir.ump.edu.my/id/eprint/10110/ http://umpir.ump.edu.my/id/eprint/10110/ http://umpir.ump.edu.my/id/eprint/10110/1/RAHIMAH%20BINTI%20EMBONG%20%23.PDF
first_indexed	2023-09-18T22:09:22Z
last_indexed	2023-09-18T22:09:22Z
_version_	1777414924357599232

Study on setting time and compressive strength performance of ordinary portland cement (OPC) paste containing sodium chloride

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