Compression strength properties of the hardened cement mortar mixed with municipal incineration fine bottom ashes |
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| Authors: | Y-S Song J-M Yun T-H Kim |
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| Institution: | (1) Division of Construction, Ansan College of Technology, Ansan, Korea;(2) Geologic Environment Division, Korea Institute of Geoscience and Mineral Resources, Daejeon, Korea;(3) Department of Civil Engineering, Korea Maritime University, Busan, Korea; |
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| Abstract: | In order to recycle the incineration fine bottom ash generated from municipal solid waste as a fine aggregate construction
material(<4.75 mm), a series of uniaxial compression tests were carried out according to the mixing ratio of bottom ash, the
curing temperature, the water–cement ratio, the mixing ratio of expanded poly styrene (EPS), and the curing time. As the results
of tests, the compression strengths cured 28 days of all specimens prepared with different mixing ratios are ranged between
87 and 220 kg/cm2. The water content of the hardened cement mortar is not much different with the curing time. Also, the water content is increased
with increasing the mixing ratio of bottom ash, the water–cement ratio, and the mixing ratio of EPS. The unit weight of the
hardened cement mortar is decreased with increasing the mixing ratio of bottom ash and the mixing ratio of EPS. The compression
strength of the hardened cement mortar is decreased with increasing the mixing ratio of bottom ash. The compression strength
of the hardened cement mortar cured at 30 ± 2°C and 40 ± 2°C is bigger than that of the cement mortar cured at normal temperature
(20 ± 2°C). However, the compression strength of the hardened cement mortar cured at 30 ± 2°C is bigger than that of the cement
mortar cured at 40 ± 2°C. The compression strength is increased at the range from 0.55 to 0.6 of water–cement ratio, and then
the compression strength is decreased over 0.65 of water–cement ratio. Meanwhile, the compression strength of the hardened
cement mortar is decreased with increasing the mixing ratio of EPS. |
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