Abstract
Finely-divided copper slag made by granulating slag produced in refining of copper will improve the filling properties and uniformity of grout and is thought to be usable as a grout admixture, but there is substantial reduction in the strength of grout. The study reported here was for the purpose of developing a grout for prepacked concrete having filling properties and uniformity that are good as well as ample strength through the combined use of a grout material containing a high-range water-reducing admixture with finely-divided copper slag. Uniformity was ascertained by mix proportion analyses of various parts of 180×60×15-cm prepacked concrete specimens and core strengths, while analyses of liquid level gradient of the grout were also performed to show the advantages of copper slag grout.
