Direct Tensile Strength of Lightweight Concrete Using Polypropylene Coarse Aggregate Coated with Sand

Abstract:

Plastic waste used as coarse aggregates in structural concrete is part of efforts to minimizeenvironmental pollution. It can provide lightweight concrete but with a lower strength compared tonormal concrete. Accordingly, an experimental study of 12 concrete specimens using wastepolypropylene coarse aggregates coated with sand was carried out. Direct tensile tests were conductedto cylinder concrete specimens having diameter of 10 cm and depth of 20 cm respectively. Threemixtures of sand coated polypropylene coarse plastic aggregate, river sand as fine aggregate, waterand Portland Composite Cement with a water-cement ratio of 0.286 were conducted. The massproportion of cement and sand are the same but the mass of plastic coarse aggregates coated withsand is specific for each mixture. Direct tensile strength of the specimens in general shows that highertensile strength is found for specimens having higher compressive strength. From the test results, amodel of direct tensile stress-strain relation is proposed. Finally the direct tensile strength forlightweight concrete using polypropylene coarse aggregate coated with sand is found to be lower thanthe direct tensile strength for normal concrete.

• Periodical: Key Engineering Materials (Volume 789)
• Pages: 131-136
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.789.131
• Online since: November 2018
• Authors: Heru Purnomo*, Andhika Rizki Yuandry, Elly Tjahjono
• Keywords: Cylinder Specimen, Direct Tensile Strength, Plastic Coarse Aggregate, Polypropylene, Sand Coating

References

[1] Y. W. Choi, D. J. Moon, Y. J. Kim, M. Lachemi, Characteristics of mortar and concrete containing fine aggregate manufactured from recycled waste polyethylene terephthalate bottles. Constr. Build. Mater. 23 (2009) 2829–2835.

DOI: 10.1016/j.conbuildmat.2009.02.036

[2] N. Saikia, N, J. de Brito, Use of plastic waste as aggregate in cement mortar and concrete preparation: A review, Constr. Build. Mater. 34 (2012) 385–401.

DOI: 10.1016/j.conbuildmat.2012.02.066

[3] M. Wu, C. Zang, Z. Chen, Study on the direct tensile, splitting and flexure strengths of concrete. J. Hydraul. Eng. 46(8) (2015) 981-988.

[4] M. I. Khan, Direct Tensile Strength Measurement of Concrete. A.M.M. 117-119 (2011) 9-14.

[5] S. J. Choi, K. H. Yang, J. I. Sim, B. J. Choi, Direct tensile strength of lightweight concrete with different specimen depths and aggregate sizes. Constr. Build. Mater. 63 (2014) 132–141.

DOI: 10.1016/j.conbuildmat.2014.04.055

[6] K. H. Yang, S. T. Yi,. Tests on direct tensile characteristics of expanded clay lightweight aggregate concrete. Mag. Concr. Res. 68(11) (2016) 581-592.

DOI: 10.1680/jmacr.15.00077

[7] SNI 15-7064-2004. Standar Nasional Indonesia. Semen Portland Komposit. Badan Standardisasi Nasional.

[8] EN 197-1:2000. European Standard. Specification for Portland Cement.

[9] G. Pamudji, H. Purnomo, I. Katili, I. Imran, The use of plastics waste as coarse aggregates for moderate strength concrete. Proceeding the 6th Civil Engineering Conference in Asia Region: Embracing the Future through Sustainability, Jakarta: ISBN 978-602-8605 (2013).

[10] H. Purnomo, G. Pamudji, M. Satim, Influence of uncoated and coated plastic waste coarse aggregates to concrete compressive strength, MATEC Web of Conference 101 (2017).

DOI: 10.1051/matecconf/201710101016

[11] SNI 03-2834-2000. Standar Nasional Indonesia. Tata Cara Pembuatan Rencana Campuran Beton Normal. Badan Standardisasi Nasional.

[12] ASTM C 39. Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens.