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Title: | Use of GUM arabic as a superplasticizer in self- compacting concrete |
Authors: | Athman, Caroline M. Abuodha, Silvester O. Nyomboi, Timothy |
Keywords: | Gum arabic Superplasticizer Spread flow |
Issue Date: | 2018 |
Publisher: | Blue Eyes Intelligence Engineering & Sciences Publication Pvt. Ltd. |
Abstract: | In this paper, Gum Arabic (GA) obtained from Acacia Senegal trees found in northern Kenya and most of other semi arid areas in Kenya was used in self compacting concrete as a superplasticizer. The research sought to establish the effect of Gum Arabic on concrete rheology at varying dosages and water- powder ratio. Series of mix design trials were conducted based on European Standard for design of self-compacting concrete (EFNARC). The final optimum mix design ratio applied were: water-powder ratio of 1.1, 1.0, 0.9 and 0.8 and Gum Arabic dosages of 2%, 4%, 6%, 8%, 10% and 12% by weight of cement while the coarse and fine aggregates content applied was 28% and 45% respectively. The resultant mix was tested for passing ability, flow ability and segregation resistance .The results show that Gum Arabic is suitable for use as a superplasticizer in self compacting concrete and a dosage of 8% by weight of cement for water-powder ratio of 1.0, 0.9 and 0.8 by volume and aggregate ratio of 28% coarse and 45% fine is recommended. It is also noted that it has an advantage of being environment friendly. |
URI: | http://ir.mu.ac.ke:8080/jspui/handle/123456789/5504 |
Appears in Collections: | School of Engineering |
Files in This Item:
File | Description | Size | Format | |
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Caroline, Silvester and Timothy.pdf | 985.37 kB | Adobe PDF | View/Open |
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