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Evaluation of properties of workable porous concrete

Bhutta, Muhammad Aamer Rafique and Suruta, K. T. (2010) Evaluation of properties of workable porous concrete. In: 35th Conference on Our World in Concrete & Structures, 25 - 27 August 2010, Singapore.

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Abstract

This paper presents a laboratory study conducted to evaluate the properties of workable porous concrete having good workability and cohesiveness; no segregation or bleeding; requires no special vibration equipment and curing, and develops high strength. The optimum mix proportions using three sizes of coarse aggregates with appropriate amount of high water-reducing and thickening (cohesive) agents were used in the preparation of workable porous concretes and investigated for the evaluation of properties such as slump, slump-flow, void ratio, coefficient of permeability, flexural and compressive strengths. In addition, a self-compaction test was proposed by authors to determine the effects of the thickening (cohesive) and high water-reducing agents on self-compaction of workable porous concrete on its hardened properties from the viewpoint of practical application. The strength development of workable porous concretes was also examined at curing period of 1, 3, 7, 14 and 28 days at 20? and 60% RH. Consequently, workable porous concrete exhibited good workability, no segregation or bleeding and provides high strength development compared to conventional porous concrete. The results of self-compaction test for workable porous concrete also show good workability and cohesiveness without any special compaction or vibration.

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:workable porous concrete, self-compaction, coefficient of permeability, compressive and flexural strengths, strength development, total void ratio
Subjects:T Technology > TA Engineering (General). Civil engineering (General)
Divisions:Civil Engineering
ID Code:23963
Deposited By: Liza Porijo
Deposited On:19 Jun 2012 04:28
Last Modified:19 Jun 2012 04:28

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