American Society of Civil Engineers


Applicability of Controlled Low-Strength Materials with Incinerated Sewage Sludge Ash and Crushed-Stone Powder


by Takashi Horiguchi, (corresponding author), (Associate Professor, Dept. of Civil Engineering, Faculty of Engineering, Hokkaido Univ., N13 W8 Kita-ku Sapporo, Japan, 060-8628 E-mail: horiguti@eng.hokudai.ac.jp), Ryo Fujita, (M.S. Student, Dept. of Civil Engineering, Faculty of Engineering, Hokkaido Univ., N13 W8 Kita-ku Sapporo, Japan, 060-8628.), and Kazunori Shimura, (Assistant Professor, Dept. of Civil Engineering, Faculty of Engineering, Hokkaido Univ., N13 W8 Kita-ku Sapporo, Japan, 060-8628. E-mail: shimura@Engineerhokudai.ac.jp)

Journal of Materials in Civil Engineering, Vol. 23, No. 6, June 2011, pp. 767-771, (doi:  http://dx.doi.org/10.1061/(ASCE)MT.1943-5533.0000201)

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Document type: Journal Paper
Special Section: Sustainable Construction Materials
Abstract: This paper discusses the applicability of new controlled low-strength materials (CLSM) that include incinerated sewage sludge ash. The incinerated sewage sludge ash was used as a replacement for fly ash, which is the main component of CLSM. A dust powder made during crushed-stone production was used as a fine aggregate. This new type of green CLSM is a promising sustainable cementitious material with the capability to reduce CO2 emissions. The test results show that adequate strength development and reasonable flowability can be achieved if the mixture proportion is carefully designed. The leachate characteristics of the new CLSM are evaluated in this paper, and the test results show acceptable leachate levels. The test results also confirm that a wide range of municipal solid wastes could be used as materials in the new green CLSM. Finally, backfill construction was conducted with this new CLSM, and the excellent performance was confirmed.


ASCE Subject Headings:
Backfills
Municipal wastes
Solid wastes
Sewage
Sludge
Ashes
Waste management

Author Keywords:
Backfill
By-product
Controlled low-strength materials (CLSM)
Leachate characteristics
Municipal solid waste (MSW)
Incinerated ash
Sewage sludge
Stone dust
Slag