• ASTM C457/C457M-11

ASTM C457/C457M-11

Standard Test Method for Microscopical Determination of Parameters of the Air-Void System in Hardened Concrete

ASTM International, 10/01/2011

Publisher: ASTM

File Format: PDF

$33.00$67.00


Published:01/10/2011

Pages:14

File Size:1 file , 510 KB

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

1.1 This test method describes procedures for microscopical determinations of the air content of hardened concrete and of the specific surface, void frequency, spacing factor, and paste-air ratio of the air-void system in hardened concrete (1). Two procedures are described:

1.1.1 Procedure A,

the linear-traverse method (2, 3).

1.1.2 Procedure B,

the modified point-count method (3, 4, 5, 6).

1.2 This test method is based on prescribed procedures that are applied to sawed and lapped sections of specimens of concrete from the field or laboratory.

1.3 It is intended to outline the principles of this test method and to establish standards for its adequate performance but not to describe in detail all the possible variations that might be used to accomplish the objectives of this test method.

1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.

1.5 This standard does not purport to address all of the safety concerns 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. For specific hazard statements see 8.3 and 10.1.

More ASTM standard pdf

ASTM Section 14:2019

ASTM Section 14:2019

ASTM Book of Standards - Section 14: General Methods and Instrumentation (Vols 14.01-14.05)

$100.00 $201.32

ASTM C1425-19

ASTM C1425-19

Standard Test Method for Interlaminar Shear Strength of 1D and 2D Continuous Fiber-Reinforced Advanced Ceramics at Elevated Temperatures

$24.00 $48.00

ASTM E848-94(2016)

ASTM E848-94(2016)

Standard Guide for Safety and Health Requirements Relating to Occupational Exposure to Water-Insoluble Chromates

$38.00 $76.00

ASTM F783-88(2013)

ASTM F783-88(2013)

Standard Specification for Staple, Handgrab, Handle, and Stirrup Rung

$25.00 $50.00