Tiêu chuẩn quốc tế
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Số hiệu
Standard Number
AASHTO T 85:2021
Năm ban hành 2021
Publication date
Tình trạng
A - Còn hiệu lực
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Tên tiếng Anh
Title in English Standard Method of Test for Specific Gravity and Absorption of Coarse Aggregate
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Thay thế cho
Replace |
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Số trang
Page 10
Giá:
Price Liên hệ / Contact us
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Phạm vi áp dụng
Scope of standard This method covers the determination of specific gravity and absorption of coarse aggregate. The specific gravity may be expressed as bulk specific gravity, bulk specific gravity (saturated surface-dry (SSD)), or apparent specific gravity. The bulk specific gravity (SSD) and absorption are based on aggregate after 15-19 h of soaking in water. This method is not intended to be used with lightweight aggregates. The values stated in SI units are to be regarded as the standard. This standard may involve hazardous materials, operations, and equipment. 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 procedure to consult and establish appropriate safety and health practices and to determine the applicability of regulatory limitations prior to its use. 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 |