Tiêu chuẩn quốc tế
|
Số hiệu
Standard Number
AASHTO T 137:2021
Năm ban hành 2021
Publication date
Tình trạng
A - Còn hiệu lực
Status |
|
Tên tiếng Anh
Title in English Standard Method of Test for Air Content of Hydraulic Cement Mortar
|
|
Thay thế cho
Replace |
|
Số trang
Page 7
Giá:
Price Liên hệ / Contact us
|
|
Phạm vi áp dụng
Scope of standard This test method covers the determination of the air content of hydraulic cement mortar under the conditions hereinafter specified. The values stated in SI units are to be regarded as the standard. Values in SI shall be obtained by measurement in SI units or by appropriate conversion, using the Rules for Conversion and Rounding in IEEE/ASTM SI 10, of measurements made in other units. 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-Fresh hydraulic cementitious mixtures are caustic and may cause chemical burns to skin and tissue on prolonged exposure. The quality of the results produced by this standard are dependent on the competence of the personnel performing the procedure and the capability, calibration, and maintenance of the equipment used. Agencies that meet the criteria of R 18 are generally considered capable of competent and objective testing/sampling/ins |