Strength and Durability Properties of Concrete with Starch Admixture

被引：27

作者：

Akindahunsi, A. A. ^{[1
]}

Uzoegbo, H. C. ^{[1
]}

机构：

[1] Univ Witwatersrand WITS, Sch Civil & Environm Engn, ZA-2050 Johannesburg, South Africa

来源：

INTERNATIONAL JOURNAL OF CONCRETE STRUCTURES AND MATERIALS | 2015年 / 9卷 / 03期

关键词：

starch; concrete; strength; sorptivity; oxygen permeability; statistical analysis; CEMENT; HYDRATION; SUCROSE;

D O I：

10.1007/s40069-015-0103-x

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

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.

引用

页码：323 / 335

页数：13

共 38 条

[1]

ACI 211, 1999, 211 ACI

[2]

Akindahunsi A.A., 2013, P 1 ACCTA INT C ADV

[3]

Akindahunsi A.A., 2012, P 3 INT C CONCR REP

[4] A framework for use of durability indexes in performance-based design and specifications for reinforced concrete structures [J].

Alexander, M. G. ;

Ballim, Y. ;

Stanish, K. .

MATERIALS AND STRUCTURES, 2008, 41 (05) :921-936

[5]

[Anonymous], 2006, 1083 SANS S AFR BUR

[6]

[Anonymous], 2006, 58612 SANS S AFR BUR

[7]

[Anonymous], 2006, 58613 SANS

[8] Assessment and prediction of RC structure service life by means of durability indicators and physical/chemical models [J].

Baroghel-Bouny, V. ;

Nguyen, T. Q. ;

Dangla, P. .

CEMENT & CONCRETE COMPOSITES, 2009, 31 (08) :522-534

[9]

BeMiller J. N., 2011, STARCH ULLMANNS ENCY

[10]

Beushausen H, 2008, J. S. Afr. Inst. Civ. Eng., V50, P25

← 1 2 3 4 →