To provide a manhole cover repairing reinforcing method and a rapid-hardening high strength concrete composition used therefor, for completing repairing and reinforcement within 20 minutes.
This manhole cover repairing reinforcing method and the rapid-hardening high strength concrete composition used therefor, are composed of a stage S10 of crushing and excavating a surrounding pavement surface of a manhole cover by a manhole cover removing machine, a stage S20 of removing a damaged height adjusting part by removing the manhole cover, a stage S30 of constructing a newly manufactured height adjusting material in the height adjusting part, a stage S40 of placing rapid-hardening high strength concrete between the outside of the constructed height adjusting material and the inside of a crushed-excavated pavement, a stage S50 of reinstalling the manhole cover in an upper part of the height adjusting material and the placed rapid-hardening high strength concrete, and a stage S60 of hardening after paving asphalt concrete between a manhole cover outer peripheral surface and the crushed-excavated pavement surface.
COPYRIGHT: (C)2009,JPO&INPIT
Ho-Kook LEE
Yangsan Che
KOREA ELECTRIC POWER CORPORATION
Ho-Kook LEE
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