| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a method of manufacturing thickened concrete that stably secures a suitable amount of air with respect to a technique for manufacturing thickened concrete. <P>SOLUTION: The method of manufacturing the thickened concrete is characterized by: (a) mixing a water reducing agent (A) which includes a polycarboxylic acid-based compound or lignin sulfonic acid-based compound as an effective component, and has an air entrainment property into base concrete; and (b) mixing together this and a soluble bag-like body (D), containing a mixture of water reducing agent powder (B) which includes a (meth)acrylate-based compound having constitution units represented by formulas (1) and (2) as effective components and does not have an air entrainment property, and thickening agent powder (C) by a drum type mixer after the mixing ends. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
