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Standard Test Method for Compressive Strength of Concrete Cylinders Cast in Place in Cylindrical Molds
NORMA vydaná dňa 1.10.2023
Označenie normy: ASTM C873/C873M-23
Dátum vydania normy: 1.10.2023
Kód tovaru: NS-1156807
Počet strán: 4
Približná hmotnosť: 12 g (0.03 libier)
Krajina: Americká technická norma
Kategória: Technické normy ASTM
This test method covers the determination of strength of cylindrical concrete specimens that have been molded in place using special molds attached to formwork. A concrete cylinder mold assembly consisting of a mold and a tubular support member is fastened within the concrete formwork prior to placement of the concrete. The elevation of the mold upper edge is adjusted to correspond to the plane of the finished slab surface. The mold support prevents direct contact of the slab concrete with the outside of the mold and permits its easy removal from the hardened concrete. Strength of cast-in-place cylinders may be used for various purposes, such as estimating the load-bearing capacity of slabs, determining the time of form and shore removal, and determining the effectiveness of curing and protection. Consolidation of concrete in the mold may be varied to simulate the conditions of placement. Internal vibration of concrete in the mold is prohibited except under special circumstances.
Keywords:
compressive strength, concrete, cylinder molds , in-place strength,, ICS Number Code 91.100.30 (Concrete and concrete products)
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