Strength and Durability Properties of Concrete with Starch Admixture

Autor:	Akindehinde Ayotunde Akindahunsi, H. C. Uzoegbo
Rok vydání:	2015
Předmět:	Cement Materials science Structural material Starch Sorptivity Ocean Engineering Oxygen permeability chemistry.chemical_compound Compressive strength chemistry Properties of concrete Composite material Curing (chemistry) Civil and Structural Engineering
Zdroj:	International Journal of Concrete Structures and Materials. 9:323-335
ISSN:	2234-1315 1976-0485
DOI:	10.1007/s40069-015-0103-x
Popis:	This paper examines some properties of concrete, such as strength, oxygen permeability and sorptivity using starch [cassava (CA) and maize (MS)] as admixtures. Concrete cubes containing different percentages of the CA and MS by weight of cement (0, 0.5, 1.0, 1.5 and 2.0 %) were cast. Compressive strength tests were carried out after 3, 7, 14, 21, 28, 56, 90, 180, 270 and 365 days of curing. Oxygen permeability and sorptivity tests were carried out on another set of concrete specimens with the same percentages of starch at 7, 28, 90, 180, 270 and 365 days. Oxygen permeability and sorptivity tests data obtained were subjected to Kruskal–Wallis one-way analysis of variance by ranks. The strength increase after 1 year over the control for CA 0.5 and CA 1.0 are 2.7 and 3.8 % respectively, while MS 0.5 and MS 1.0 gave 1.5 % increase over control. These results showed a decrease in oxygen permeability and rates of sorptivity, with concretes containing starch as admixtures giving better performance than the control concretes.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ab519f5b40e5334bd4e0a3a42fe453af https://doi.org/10.1007/s40069-015-0103-x Zobrazit plný text záznamu Full text from SpringerLink