concrete recycling
concrete recycling
(OP)
Is it possible to use water effluent, resulting from the process of concrete recycling (at batching plants), to manufacture fresh concrete?
Is there any specific requirements on the water used in the making of concrete?
Which are the countries that allow for the partial replacemnet of potable water with such recycled water?





RE: concrete recycling
Assuming no deleterious materials in the wash water, and mostly containing calcareous materials and grit, the water can likely be used for concrete production. Have it checked for organics and chlorides or other contaminants, but it should be OK.
RE: concrete recycling
Requirements are; meet ASTM C94 table 1&2; SG less than 1.07; alkali less than 600 ppm; no coloring; certify that admixtures are from same manufacturer or do compatability tests; test all above monthly using AASHTO R-18 qualifications.