Characteristics of sintered fly ash-clay body prepared by slip processing and its applicability for foundation soils

KANG SEUNG GU (강승구); LEE YEONG SAENG (이영생)

Characteristics of sintered fly ash-clay body prepared by slip processing and its applicability for foundation soils

Journal of the Korean Crystal Growth and Crystal Technology
Abbr : J. Korean Cryst. Growth Cryst. Technol.
2008, 18(6), pp.271~276
Publisher : The Korea Association Of Crystal Growth, Inc.
Research Area : Engineering > Materials Science and Engineering

KANG SEUNG GU ¹, LEE YEONG SAENG ¹

¹경기대학교

Accredited

ABSTRACT

The civil engineering properties for the coal fly ash produced from a power plant mixed with sintered powders made from the fly ash-clay slip system were measured and its applicability for the foundation soils was investigated. The F-slip whose dispersion state is ‘not good’ and C-slip which is re-flocculated by adding a flocculant to a well-dispersed slip were fabricated and then sintered. The sintered body made from C-slip had more uniform microstructure than that of F-slip, therefore, the bulk density and compressive strength were improved. The civil engineering properties such as compression index, compressive strength, permeability coefficient of fly ash were improved by mixing 0.84~2 mm powders obtained by crushing a sintered body made from C-slip. Therefore, the applicability of mixed powders composing of fly ash and sintered body made from C-slip was confirmed to foundation soils due to its improved civil engineering properties.

KEYWORDS

Fly ash, Slip, Direct coagulated casting, Civil engineering, Foundation soil

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