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pro vyhledávání: '"Sriyanti Sitorus"'
Autor:
Johan Oberlyn Simanjuntak, Sriyanti Sitorus, Humisar Pasaribu, Ros Anita Sidabutar, Yetty Riris Saragi
Publikováno v:
Jurnal Visi Eksakta. 2:239-254
Concrete is a construction material consisting of a mixture of cement, aggregate, water and with or without admixture if needed. Coarse aggregate and fine aggregate serve as the main filler of concrete as well as reinforcement, while the cement and w