| 摘要 |
<p>An improved thermally insulated, impact and abrasion resistant pipeline and an impact resistant, flexible, cementitious material which maintains low thermal conductivity when submerged and which is suitable for insulating underwater pipelines, said material comprising: hydraulic cement, a closed cell aggregate which exhibits low water absorption under high hydrostatic pressure and a polymeric modifier which increases flexibility and reduces porosity of the cured cementitious material.</p> |
