| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a remarkably high dense cement hardened body, generating no water leakage even when applying it to buried structures in the deep under ground and in the seabed, under the environment of being subjected to a high water pressure. <P>SOLUTION: The hardened body is obtained by hardening a compound containing at least cement, a pozzalanic fine powder, a fine aggregate having≤2 mm particle diameter, a water reducing agent and water, having a diffusion coefficient of≤1.0×10<SP>-9</SP>m<SP>2</SP>/sec, and preferably the compound comprises an inorganic powder with an average diameter of 3-20μm so as to obtain a more dense hardened body. <P>COPYRIGHT: (C)2003,JPO</p> |
