Abstract
The objective of this study is whether or not it is possible to use melting slag from municipal solid waste (MSW slag) as fine aggregate for reinforced concrete products. In this paper, MSW slag made by the coke-bed melting processes was examined. Reinforced concrete products (gutters for roadsides (JIS A 5345) and bench flumes (JIS A 5318)) having a MSW slag replacement rate of 0, 30, 50 and also 70%(by weight ratio) to the fine aggregatewere experimentally produced. As a result, the following results have been clarified:(1) The strength of concrete with MSW slag aggregate was equal to that of the crushed sand concrete.(2) In a high replacement ratio of slag, the freezethaw resistance of concrete with MSW slag aggregate was reduced due to the high amount of bleeding. It is proposed that MSW slag should be used with crushed sand at a replacement ratio of 50% or less.
