Performance of Cement Boards in Presence of Waste Paper

  • Muhammad Harunur Rashid Department of Civil Engineering, Khulna University of Engineering & Technology, Khulna-9203, Bangladesh
  • Bhagirath Dey Health Engineering Department, Khulna-9000, Bangladsh
Keywords: Waste Paper, Flexural Strength, Modulus of Rupture, Water Content.

Abstract

The possibility of using waste paper in manufacturing of cement board has been investigated in this paper. Cement fiber ratio and pressure is the two variables in this experimental work. Samples were prepared with fiber/cement ratios of 5:95, 15:85 and 25:75 by weight. Every mixing ratio was divided in seven sub categories depending on the pressure of 0, 1.4, 2.4, 4.2, 5.5 6.9 and 8.3 MPa. Three boards were prepared for each category to evaluate the mechanical and physical properties of the boards according to ASTM standard. It is observed that the mechanical and physical properties of the board are directly influenced with pressure. However, the flexural strength and modulus of rupture were decreased with an increase of the amount of waste paper in the board. Five percent addition of waste paper exhibits the best performance of cement board in all aspect. The optimum production condition was obtained when the fiber content and pressure were 5% and 6.9 MPa respectively. At this optimum condition the prepared cement board satisfies the flexural strength requirement for Grade 2 type cement board according to ASTM C 1186.

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Published
2019-07-03
Section
Articles