| 摘要 |
<p>Production of a high performance mortar or concrete and especially one whose crushing strength can exceed 40 MPa, such a mortar or concrete comprising, in desired proportions, a cement, solid aggregates and optional adjuvants, the whole being mixed and then having water added. According to the invention the siliceous product consists of a fine powder obtained by simple disintegration of a natural diatomite taken from a quarry, to a degree of fineness of between 0.1 and 100 mu m, and capable of replacing part of the cement with equal strength, the said powder being present in a proportion of at least 7 % of the weight quantity of cement.</p> |
