Physical and mechanical properties of concrete using fly ash and recycled concrete aggregates

In this research, physical and mechanical properties of concrete were investigated by using fly ash and recycled concrete aggregates (RCA) as partial replacement. Fly ash was collected from the Tanjung Bin Power Plant at Pontian and recycled concrete aggregates were obtained from waste at laboratory...

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Main Author:	Ooi, Wei Hong
Format:	Thesis
Language:	English
Published:	2014
Subjects:	TA Engineering (General) Civil engineering (General)
Online Access:	http://eprints.utm.my/id/eprint/48927/25/OoiWeiHongMFKA2014.pdf
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id	my-utm-ep.48927
record_format	uketd_dc
spelling	my-utm-ep.489272020-07-08T02:00:27Z Physical and mechanical properties of concrete using fly ash and recycled concrete aggregates 2014-08 Ooi, Wei Hong TA Engineering (General). Civil engineering (General) In this research, physical and mechanical properties of concrete were investigated by using fly ash and recycled concrete aggregates (RCA) as partial replacement. Fly ash was collected from the Tanjung Bin Power Plant at Pontian and recycled concrete aggregates were obtained from waste at laboratory. So, 20% of total amount of cement was replaced by fly ash as partial replacement but for recycled concrete aggregates, it was replaced coarse aggregates as 0%, 25%, 50%, 75% and 100% to check which is the best combination. The dosage of superplasticizer in this study was 1.5% of weight of cement and 0.4 water/cement ratio was used in the mixture.. A number of tests were conducted to investigate fresh and hardened state properties like slump, ultrasonic pulse velocity, compressive, tensile and flexural strength of fly ash and recycled aggregates concrete. Test specimens comprising of cube, cylinder and prism were prepared and tested after 1, 7, 28 and 56 days of water curing. It was found that the workability of the concrete was reduced as the percentage of RCA increased. The range of the workability of the fresh concrete was fall at 65 mm to 130 mm. However, high content of RCA was increased the water absorption of the concrete. The result has obtained that the water absorption of concrete was in the range of 5.38% to 8.65% among the samples. A reduction on compressive, tensile and flexural strength occurred as the content of replacement increased. As conclusion, concrete with 20% of fly ash and 25% of recycled aggregates as partial replacement was concluded as the best mixed ratio since the mechanical properties of the concrete was almost equal to the conventional concrete. The maximum compressive strength of the sample was 34.55 MPa while splitting tensile strength and flexural strength have achieved 3.7 MPa and 4.35 MPa. 2014-08 Thesis http://eprints.utm.my/id/eprint/48927/ http://eprints.utm.my/id/eprint/48927/25/OoiWeiHongMFKA2014.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:85262 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) Ooi, Wei Hong Physical and mechanical properties of concrete using fly ash and recycled concrete aggregates
description	In this research, physical and mechanical properties of concrete were investigated by using fly ash and recycled concrete aggregates (RCA) as partial replacement. Fly ash was collected from the Tanjung Bin Power Plant at Pontian and recycled concrete aggregates were obtained from waste at laboratory. So, 20% of total amount of cement was replaced by fly ash as partial replacement but for recycled concrete aggregates, it was replaced coarse aggregates as 0%, 25%, 50%, 75% and 100% to check which is the best combination. The dosage of superplasticizer in this study was 1.5% of weight of cement and 0.4 water/cement ratio was used in the mixture.. A number of tests were conducted to investigate fresh and hardened state properties like slump, ultrasonic pulse velocity, compressive, tensile and flexural strength of fly ash and recycled aggregates concrete. Test specimens comprising of cube, cylinder and prism were prepared and tested after 1, 7, 28 and 56 days of water curing. It was found that the workability of the concrete was reduced as the percentage of RCA increased. The range of the workability of the fresh concrete was fall at 65 mm to 130 mm. However, high content of RCA was increased the water absorption of the concrete. The result has obtained that the water absorption of concrete was in the range of 5.38% to 8.65% among the samples. A reduction on compressive, tensile and flexural strength occurred as the content of replacement increased. As conclusion, concrete with 20% of fly ash and 25% of recycled aggregates as partial replacement was concluded as the best mixed ratio since the mechanical properties of the concrete was almost equal to the conventional concrete. The maximum compressive strength of the sample was 34.55 MPa while splitting tensile strength and flexural strength have achieved 3.7 MPa and 4.35 MPa.
format	Thesis
qualification_level	Master's degree
author	Ooi, Wei Hong
author_facet	Ooi, Wei Hong
author_sort	Ooi, Wei Hong
title	Physical and mechanical properties of concrete using fly ash and recycled concrete aggregates
title_short	Physical and mechanical properties of concrete using fly ash and recycled concrete aggregates
title_full	Physical and mechanical properties of concrete using fly ash and recycled concrete aggregates
title_fullStr	Physical and mechanical properties of concrete using fly ash and recycled concrete aggregates
title_full_unstemmed	Physical and mechanical properties of concrete using fly ash and recycled concrete aggregates
title_sort	physical and mechanical properties of concrete using fly ash and recycled concrete aggregates
granting_institution	Universiti Teknologi Malaysia, Faculty of Civil Engineering
granting_department	Faculty of Civil Engineering
publishDate	2014
url	http://eprints.utm.my/id/eprint/48927/25/OoiWeiHongMFKA2014.pdf
_version_	1747817504588169216

Physical and mechanical properties of concrete using fly ash and recycled concrete aggregates

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