• ASTM C1231/C1231M-08

ASTM C1231/C1231M-08

Standard Practice for Use of Unbonded Caps in Determination of Compressive Strength of Hardened Concrete Cylinders

ASTM International, 01/01/2008

Publisher: ASTM

File Format: PDF

$26.00$52.00


Published:01/01/2008

Pages:4

File Size:1 file , 89 KB

Note:This product is unavailable in Russia, Ukraine, Belarus

1.1 This practice covers requirements for a capping system using unbonded caps for testing concrete cylinders molded in accordance with Practice C 31/C 31M or C 192/C 192M. Unbonded neoprene caps of a defined hardness are permitted to be used for testing for a specified maximum number of reuses without qualification testing up to a certain concrete compressive strength level. Above that strength, level neoprene caps will require qualification testing. Qualification testing is required for all elastomeric materials other than neoprene regardless of the concrete strength.

1.2 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].

1.3 The values stated in either inch-pound or SI units shall be regarded as standard. SI units are shown in brackets. That values stated in each system may not be exact equivalents; therefore, each system must be used independently of the other, without combining the values in any way.

1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. (Warning-Concrete cylinders tested with unbonded caps rupture more violently than comparable cylinders tested with bonded caps. The safety precautions given in the Manual of Aggregate and Concrete Testing are recommended. )

More ASTM standard pdf

ASTM E1354-16a

ASTM E1354-16a

Standard Test Method for Heat and Visible Smoke Release Rates for Materials and Products Using an Oxygen Consumption Calorimeter

$41.00 $83.00

ASTM D6121-16a

ASTM D6121-16a

Standard Test Method for Evaluation of Load-Carrying Capacity of Lubricants Under Conditions of Low Speed and High Torque Used for Final Hypoid Drive Axles

$41.00 $83.00

ASTM D3775-17e1

ASTM D3775-17e1

Standard Test Method for End (Warp) and Pick (Filling) Count of Woven Fabrics

$30.00 $60.00

ASTM E734-80(2021)

ASTM E734-80(2021)

Standard Specification for Disposable Glass Blood Sample Capillary Tube (Microhematocrit)

$23.00 $46.00