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Properties and Behavior of Starch Biopolymer Concrete | ||
| Engineering and Technology Journal | ||
| Article 1, Volume 38, 10A, 2020, Pages 1414-1420 PDF (744.84 K) | ||
| Document Type: Research Paper | ||
| DOI: 10.30684/etj.v38i10A.365 | ||
| Authors | ||
| Waleed A. Abbas* ; Hawraa M. Mohsen | ||
| Civil Engineering Department, University of Technology, Baghdad, Iraq, | ||
| Abstract | ||
| Starch act as natural polymer has been got from Wheat, Tapioca, and Corn. Corn starch has been investigated as biopolymer and has been added to concrete in different percentages (0%, 0.5%, 1%, and 1.5%) by cement weight and the study shows the effect of using starch on some properties of concrete in the fresh state ( slum and fresh density) and at hardened state (compressive strength, splitting tensile strength and flexural strength) at 28 days. The mix proportion was(1:2.3:2.3) (cement: sand: gravel) respectively and at constant w/c equal to 0.47.The results indicate that the optimum percentage of starch addition was 0.5%, so it showed an increase by 50%in compressive strength and splitting tensile strength; while, the increases in flexural strength were 26%. Slump showed a 25% increase and fresh density showed a 2.5% increase at 0.5% addition of starch. | ||
| Keywords | ||
| Biopolymer; Concrete; starch; strength | ||
| References | ||
|
[1] J. Plank, “Products and Applications of Biopolymers” Janeza Trdine, Croatia, 2012. [2] M. V. Karandikar, S.B. Sarase P.G. Lele and S.A. Khadilkar,,, Use of Natural Biopolymers for Improved Mortar& Concrete Properties of Cements, Quality & Product Development, L.B.S. Marg, Thane 400 604, India. [3] A. Akindahunsi, W. Schmidt and S.E. Iyuke, “The Influence of Starches on some Properties of Concrete, Advances in Cement and Concrete Technology in Africa” p.p. 637-646,2013. [4] J. Plank, ,,Applications of Biopolymers in Construction Engineering, TU Munich, Institute for Inorganic Chemistry, Garching, Germany,P.3,2005. [5] Central Organization for Standardization and Quality Control, COSQC, “Specification for Portland Cement, IQS 5-1984”, Baghdad, Iraq, 1984. (In Arabic). [6] Central Organization for Standardization and Quality Control, COSQC, “Aggregates from Natural Sources for Concrete and Building Construction, IQS 45-1984”, Baghdad, Iraq, 1984. (In Arabic). [7] American Society for Testing and Materials, “Standard Practice for Making and Curing Concrete Test Specimens in the Laboratory, ASTM C192. [8] American Society for Testing and Materials, “Standard Test Method for Slump of Hydraulic-Cement Concrete, ASTM C143. [9] American Society for Testing and Materials, “Standard Test Method for fresh density of concrete, ASTM C 138M-01. [10] British Standard “Method for determination of compression strength, BS 1881: part 181. [11] American Society for Testing and Materials, “Standard Test Method for splitting tensile strength of concrete, ASTM C496-04. [12] American Society for Testing and Materials, “Standard Test Method for flexural strength of concrete, ASTM C 78-0. | ||
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