| 摘要 |
PROBLEM TO BE SOLVED: To obtain high strength concrete having water discharging performance, sound absorbing property, antislipping effect and water permeability by blending and kneading Portland cement with #7 macadam, #6 macadam, a binder, a pigment and water in a specified ratio and carrying out concrete placing or press hardening with a form on a surface to be paved. SOLUTION: A concrete mixture is prepd. by blending 350-400kg Portland cement based on 1m<3> of the mixture with 90-1001 water, 750-800kg #7 mecadam, 800-850kg #6 macadam, 1.5-2.0kg binder and 10-15kg pigment. The #7 macadam and #6 macadam area aggregate and preferably have a Mohs hardness of >=6 and >=700kgf/mm<2> Knoop hardness. By the aggregate, the objective water permeable concrete having a large void volume and high strength is obtd. The binder is an inorg. binder such as anhydrous gypsum or kaolin or an org. binder such as resin latex. |
