To provide a manufacturing method of a concrete product enhanced in productivity, good in work environment, producing no sludge and having excellent aesthetic surface by solving the point at issue inherent to the concrete product like a concrete pipe or the like having a synthetic resin in its inside and a steel material in its outer peripheral surface.
In the manufacturing method of the concrete product having the synthetic resin in its inner peripheral surface and the steel material in its outer peripheral surface, highly flowable concrete with a slump flow of 65 cm or above is prepared and the prepared concrete is cast on the space between the inside form comprising the synthetic resin which constitutes the inner surface side of the concrete product and the outside form comprising the steel material which constitutes the outer surface side of the concrete product without detaching both forms after the concrete is cast and molded in the state that both forms are allowed to stand stationarily.
ANDO YUTAKA
KITAGAWA AKIRA
YAMASHITA MASAHIRO
KURIMOTO CONCRETE IND LTD
| JPH01234679A | 1989-09-19 | |||
| JP2001260124A | 2001-09-25 | |||
| JP2003073155A | 2003-03-12 |
Seiichi Yakumaru
Hiroaki Nakatani
Tokuya Iwata