Tiêu chuẩn quốc tế

• Số hiệu / Standard Number: AASHTO T 71:2008
• Năm ban hành / Publication date: 2008
• Tình trạng / Status: A - Còn hiệu lực
• Tên tiếng Anh / Title in English: Standard Method of Test for Effect of Organic Impurities in Fine Aggregate on Strength of Mortar
• Thay thế cho / Replace: AASHTO T 71:2007
• Số trang / Page: 7

Phạm vi áp dụng / Scope of standard

This test method covers the determination of the effect on mortar strength of the organic impurities in fine aggregate, whose presence is indicated by tests with T 21. Comparison is made between compressive strengths of mortar made with washed and unwashed fine aggregate.

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.