Use of starch modified concrete as a repair material

Author(s): A.A. Akindahunsi, H.C. Uzoegbo, S.E. Iyuke
Paper category: Conference
Book title: Concrete Repair, Rehabilitation and Retrofitting III (ICCRRR)
Editor(s): M.G. Alexander, H.-D. Beushausen, F. Dehn, P. Moyo
Print ISBN: 978-0-415-89952-9
Publisher: Taylor & Francis Group
Pages: 339- 340
Total Pages: 2
Language: English

Corn is a rich source of carbohydrate, starch extracts and a source staple food for majority of sub-Saharan African population. Starch and its derivatives have been widely described as rheology- modifying admixtures; in an ongoing research the effect of using corn starch modified concrete is reported. Its effects on concrete properties such as compressive strength, sorptivity and permeability were determined on samples with 0, 2.5 and 5% addition of starch by weight of cement. The result showed 9 and 3% increase in strength for 2.5 and 5% starch additions respectively when compared with the control after 56 days of curing, while the sorptivity and permeability tests compared well with the control. At certain proportion, corn starch-modified cement and concrete exhibit low slump and accelerated setting time. These properties make them suitable for certain applications such as concrete repairs and pavement design.

Online publication: 2014
Publication Type: abstract_only
Public price (Euros): 0.00