| 摘要 |
PCT No. PCT/CH95/00277 Sec. 371 Date Jul. 7, 1997 Sec. 102(e) Date Jul. 7, 1997 PCT Filed Nov. 27, 1995 PCT Pub. No. WO96/19418 PCT Pub. Date Jun. 27, 1996A building and construction material and method of making the material utilizes water with cement which are mixed together and followed by mixing with a mineral filler material such as sand or gravel to produce concrete having micropores of about 0.01 to about 5 mu in diameter. By eliminating from the mineral filler material all fine grains of less than 0.2 mm, it has been found that the strength of the concrete is improved and the amount of shrinkage is reduced. |
