| 摘要 |
The present invention relates to a concrete manhole structure. The manhole structure comprises: a lower manhole; an upper manhole; and a connection portion of the lower and upper manholes wherein an injection material composite is disposed in the connection portion, and the injection material composite includes a performance improvement admixture and a filler wherein the performance improvement admixture includes acrylonitrile butadiene, methyl methacrylate-butadiene, polycarbonate, urethane-acrylic, silicone polypropylene, polytetrafluoroethylene, bisphenol B, phthalic acid ester, dibutyltin dilaurate, and triphenyl stibine. The constructing method of a concrete manhole structure of the present invention comprises the steps of: injecting an injection material composite to a connection portion of a lower manhole; installing a sealing member on an outer peripheral edge of the connection portion of the lower manhole; forming a manhole structure by matching and raising the connection portion of the upper manhole with respect to the lower manhole; and hardening the manhole structure. |
