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concrete sand | строительный песок (Concrete sand is an aggregate sand usually composed of either gneiss, trap rock, limestone or granite. Usually it is crushed at the quarry and then washed through a screen to ensure that there are no large pieces of rocks left in it. braenstone.com Alexander Demidov) |
don't mix too much sand with the concrete | не прибавляйте к бетону слишком много песку |