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WebHigh strength concrete often considered as new material. Its development has been many years ago In USA in the 1950 concrete with a compressive strength of 34 MPa was considered high strength, in 1960 Concrete with 41 to 52 MPa compressive strength were used commercially. In the early 1970s 62 MPa concrete was Web4. Al-Khaiat, H., Haque, M.N. Effect of initial curing on early strength and physical properties of a lightweight concrete. Cement and Concrete Research. 1998. 28 (6). Pp. 859-866. DOI: 10.1016/S0008-8846(98)00051-9. 5. Demirdag, S., Gunduz, L. Strength properties of volcanic slag aggregate lightweight concrete for high performance … christmas special tv guide
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