Pad Caps For Cylinders

Pad Caps For Cylinders

The Pad Cap system consists of reusable pads that are contained in steel retainer rings and fit upon the ends of concrete cylinders for compression testing.details Pad Caps are made from neoprene and natural rubber, 1/2 in (12.7 mm) thick. ASTM C1231 states that unbonded caps are not to be used for acceptance testing of concrete with compressive strength below 1500 psi (10 MPa) or above 12,000 psi (85 MPa). Choice of durometer (hardness) is determined by the amount of compression with which the cylinder will be tested. Recommended durometers are: 1500 to 6000 psi (10.3 to 41.4) MPa: 50 durometer 2500 to 7000 psi (17.2 to 48.3) MPa: 60 durometer 4000 to 7000 psi (27.6 to 48.3) MPa: 70 durometer Pad Caps may be reused up to 100 times when testing in these ranges, however they should be discarded if they show excessive wear or cracking.

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