| 摘要 |
PROBLEM TO BE SOLVED: To easily produce a high strength water permeable concrete excellent in water permeability. SOLUTION: The water permeable concrete is produced using 100 pts.wt. powder of cement or the like, 0-100 pts.wt. fine aggregate, 400-600 pts.wt. coarse aggregate, 0.1-1 pt.wt. thickening additive comprising a mixture of a water-soluble cellulose ether and water-soluble polysaccharides in a weight ratio of 10:90 to 30:70, 0.3-15 pts.wt. organic polymer, 0-1 pt.wt. water-reducing agent and 20-50 pts.wt. water. The surfaces of the aggregates are previously coated with water or an emulsion of the organic polymer or the like.
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