University of Khartoum

Production and Properties of Powder type Self- Compacting Concrete in Sudan

Production and Properties of Powder type Self- Compacting Concrete in Sudan

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Title: Production and Properties of Powder type Self- Compacting Concrete in Sudan
Author: Abdalla, Tasneem Mohamed Kabashi
Abstract: The primary objective of the study is to conduct an exploratory work towards the development of a suitable SCC mix design, with a special consideration focus on solving problems related to satisfactory segregation resistance, filling, and passing abilities.Another objective of the study isto evaluate the performance of the SCC mixes at their hardened state. The methodology adopted is divided into two parts; theoretical review and laboratory work. Thelaboratory work consists of conducting a series of trial mixesin order to get vital and special parameters concern basic characteristics of self-compacting concrete; such as workability, flowability, passibility, and segregation resistance. The fresh state properties of the SCC trial mixes were assessed using very special tests;such as the slump flow test, V-funnel test, J-ring test and screen stability test.Finally; four suitable SCC mixes were selected based on the self-compactibility requirement andtested at hardened state using destructive and non- destructive tests. The results obtained indicated that; it is possible to develop a high strength powder type self -compacting concrete using cement content of 350 kg/m³ and fly ash content of 195 kg/m³. It is found that increasing the fly ash content to replace cement adversely affected the compressive strength and workability. In addition, some reliable statistical relations between fresh properties were developed and demonstrated. The significance of this work lies in its attempt to provide some performance data of powder type SCC containing Class F fly ash; In order to obtain a more complete understanding of these special types of concretes, and to get the practical knowledge towards the commercialization of such concrete in Sudan.
URI: http://khartoumspace.uofk.edu/123456789/16778
Date: 2015-10-27


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