Reuse of Melamine Waste in Fiber Reinforced Lightweight Concrete
This paper presents the mechanical properties of lightweight concrete reinforced with steel fibers and mixed with melamine waste. The product is called melamine fiber-reinforced lightweight concrete. The melamine waste which cannot be melted in the recycling process is utilized to replace the sand content in the concrete mixed design. Experimental tests for the variation of mix proportion were carried out to determine the compressive strength, density, and flexural strength of concrete. The melamine waste was varied between 10-60% by volume of sand and melamine. The steel fibers which have the length to diameter ratios of 60, 70, and 80 were randomly distributed between 0.5-5.0% by weight of cement. The foaming agent which was employed to produce lightweight concrete was varied between 0.5-5.0% by weight of cement. The experimental results show that the density of concrete can be reduced by the melamine content. However, the effect of melamine leads to the low compressive strength. To improve the compressive strengths of concrete, the steel fiber content have an important effect to contribute the compressive strength. In addition, the presence of steel fiber also increases the flexural strength, especially when the length to diameter ratio is increased. Finally, for the mixed design of concrete fence panel, the appropriate mixed proportion is recommended as follows. The ratio of cement : sand : water : water reducing agent: foam is 1.0 : 1.0 : 0.45 : 0.03 : 0.025 by weight of cement. The melamine content is 10% by volume of sand and melamine. The steel fiber content is 4% by weight of cement with the length to diameter ratio of 70. This mixed design is based on the evaluation of suitable compressive and flexural strength, as well as for an acceptable value of density to be produced for concrete fence panel.
melamine waste steel fiber lightweight concrete compressive strength flezural strength
PANYAKAPO Phaiboon PANYAKAPO Mallika SOMPOLWATTANA Phongphan
Department of Civil Engineering,Faculty of Engineering,Sripatum University,Bangkok 10900,Thailand Department of Environmental Science,Faculty of Science,Silpakorn University,Nakhon Pathom 73000,Thai
国际会议
2009 International Symposium on Environmental Science and Technology(2009环境科学与技术国际会议)
上海
英文
2170-2176
2009-06-02（万方平台首次上网日期，不代表论文的发表时间）