| 摘要 |
<p>This invention relates to the conveyance of cement (4) under water to form concrete. The method claimed utilizes, inter alia, a positive displacement pump (16) and feed pipe (11) to convey unreacted cement, suspended in an environmentally safe and non-reactive liquid vehicle or carrier (polyethyleneglycol, for example), to an underwater site (13) comprised of a hydrated aggregate mass (12) (usually sand), permitting said carrier to diffuse from said suspension into surrounding water and further permitting said cement to react with water in the aggregate thereby causing the cement, water and aggregate mixture to form concrete.</p> |
