Properties of crushed recycled fine aggregate in concrete mixes

In many developing countries, the construction activities growth tremendously with sometimes, constituting large amount of waste produce by Construction and Demolition (C&D) works. Since C&D waste had been disposed incorrectly, many researchers and concrete engineers suggested that reused or...

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Main Author:	Mohd. Syaifu, Mohd. Murad
Format:	Thesis
Language:	English
Published:	2013
Subjects:	TA Engineering (General) Civil engineering (General)
Online Access:	http://eprints.utm.my/id/eprint/33261/1/MohdMuradMohdSyaifuMFKA2013.pdf
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id	my-utm-ep.33261
record_format	uketd_dc
spelling	my-utm-ep.332612017-09-14T03:55:33Z Properties of crushed recycled fine aggregate in concrete mixes 2013-01 Mohd. Syaifu, Mohd. Murad TA Engineering (General). Civil engineering (General) In many developing countries, the construction activities growth tremendously with sometimes, constituting large amount of waste produce by Construction and Demolition (C&D) works. Since C&D waste had been disposed incorrectly, many researchers and concrete engineers suggested that reused or recycling the waste is more profitable and an appropriate alternative to improve the construction method. The utilization of waste material is able to conserve the raw material but also preserve the environment. This study discusses on several physical and mechanical properties of crushed recycled fine aggregates to replace fine natural aggregate (sand) in the production of new concrete. Recycled Fine Aggregate (RFA) concrete is crushed into the fine aggregate with particles size less than 5mm diameter. The replacement level or RFA is varied, by replacing to 0%, 25%, 50%, 75% and 100%. Sieve analysis, specific gravity and water absorption test have been examined to check on fine recycled aggregates characteristic. In order to achieve the objectives, test for concrete samples were conducted in two categories which is fresh concrete test and hardened test. For fresh concrete test, slump test were conducted to measure the degree of the workability of the fresh concrete. The hardened test such as compressive strength, flexural strength, density of cube and ultrasonic pulse velocity test were investigated. It was obtained that the compressive and flexural strength decrease with increment of replacement. However, after 28 days of curing time, the concrete containing recycled aggregate rates of strength development are almost similar to the natural concrete. It was cleared that at 25% replacement the reduction of concrete strength is at 2% - 3%. Meanwhile, it was found that the water absorption of the fine crushed concrete waste much greater than natural aggregate. Finally, it can be conclude that it is possible to replace the normal fine aggregate with the fine crushed concrete waste aggregate since the properties obtained were similar to the conventional concrete. 2013-01 Thesis http://eprints.utm.my/id/eprint/33261/ http://eprints.utm.my/id/eprint/33261/1/MohdMuradMohdSyaifuMFKA2013.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:69090?site_name=Restricted Repository masters Universiti Teknologi Malaysia, Faculty of Civil Engineering Faculty of Civil Engineering
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	TA Engineering (General) Civil engineering (General)
spellingShingle	TA Engineering (General) Civil engineering (General) Mohd. Syaifu, Mohd. Murad Properties of crushed recycled fine aggregate in concrete mixes
description	In many developing countries, the construction activities growth tremendously with sometimes, constituting large amount of waste produce by Construction and Demolition (C&D) works. Since C&D waste had been disposed incorrectly, many researchers and concrete engineers suggested that reused or recycling the waste is more profitable and an appropriate alternative to improve the construction method. The utilization of waste material is able to conserve the raw material but also preserve the environment. This study discusses on several physical and mechanical properties of crushed recycled fine aggregates to replace fine natural aggregate (sand) in the production of new concrete. Recycled Fine Aggregate (RFA) concrete is crushed into the fine aggregate with particles size less than 5mm diameter. The replacement level or RFA is varied, by replacing to 0%, 25%, 50%, 75% and 100%. Sieve analysis, specific gravity and water absorption test have been examined to check on fine recycled aggregates characteristic. In order to achieve the objectives, test for concrete samples were conducted in two categories which is fresh concrete test and hardened test. For fresh concrete test, slump test were conducted to measure the degree of the workability of the fresh concrete. The hardened test such as compressive strength, flexural strength, density of cube and ultrasonic pulse velocity test were investigated. It was obtained that the compressive and flexural strength decrease with increment of replacement. However, after 28 days of curing time, the concrete containing recycled aggregate rates of strength development are almost similar to the natural concrete. It was cleared that at 25% replacement the reduction of concrete strength is at 2% - 3%. Meanwhile, it was found that the water absorption of the fine crushed concrete waste much greater than natural aggregate. Finally, it can be conclude that it is possible to replace the normal fine aggregate with the fine crushed concrete waste aggregate since the properties obtained were similar to the conventional concrete.
format	Thesis
qualification_level	Master's degree
author	Mohd. Syaifu, Mohd. Murad
author_facet	Mohd. Syaifu, Mohd. Murad
author_sort	Mohd. Syaifu, Mohd. Murad
title	Properties of crushed recycled fine aggregate in concrete mixes
title_short	Properties of crushed recycled fine aggregate in concrete mixes
title_full	Properties of crushed recycled fine aggregate in concrete mixes
title_fullStr	Properties of crushed recycled fine aggregate in concrete mixes
title_full_unstemmed	Properties of crushed recycled fine aggregate in concrete mixes
title_sort	properties of crushed recycled fine aggregate in concrete mixes
granting_institution	Universiti Teknologi Malaysia, Faculty of Civil Engineering
granting_department	Faculty of Civil Engineering
publishDate	2013
url	http://eprints.utm.my/id/eprint/33261/1/MohdMuradMohdSyaifuMFKA2013.pdf
_version_	1747816118544760832

Properties of crushed recycled fine aggregate in concrete mixes

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