| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a concrete product excellent in acid resistance, utilizing effectively various wastes such as sewage sludge, town rubbish, shredder dust and construction waste materials. SOLUTION: An acid resistant concrete product which comprises an acid resistant layer constituted substantially of a slag composition containing a waste molten slag and having a CaO/SiO2 molar ratio of 1.2 or below, alkali silicate and aggregate (A), a polymer layer (B) and concrete (C), of which the inner surface and/or the outer surface is formed of the acid resistant layer and wherein the acid resistant layer and the concrete are laminated with the polymer layer between.</p> |
