Concrete composition for underwater use

摘要

PCT No. PCT/JP84/00390 Sec. 371 Date Jul. 26, 1985 Sec. 102(e) Date Jul. 26, 1985 PCT Filed Jul. 31, 1984 PCT Pub. No. WO85/00802 PCT Pub. Date Feb. 28, 1985.A concrete composition for underwater use contains about 0.1 to 4% by weight based on cement content of a water soluble vinyl polymer containing vinyl units having sulfonic groups. The concrete composition is easy to mix and prevents separation of concrete composition constituents as it is laid under water.