Tiêu chuẩn quốc tế

• Số hiệu / Standard Number: AASHTO T 135:2013
• Năm ban hành / Publication date: 2013
• Tình trạng / Status: A - Còn hiệu lực
• Tên tiếng Anh / Title in English: Standard Method of Test for Wetting-and-Drying Test of Compacted Soil-Cement Mixtures
• Thay thế cho / Replace: AASHTO T 135:1997
• Số trang / Page: 8

Phạm vi áp dụng / Scope of standard

These methods of test cover procedures for determining the soil-cement losses, moisture changes, and volume changes (swell and shrinkage) produced by the repeated wetting and drying of hardened soil-cement specimens. The specimens are compacted in a mold, before cement hydration, to maximum density at optimum moisture content using the compaction procedure described in T 134.

Two methods, depending on soil gradation, are covered for preparation of material for molding specimens and for molding specimens as follows:

Method A-Using soil material passing the 4.75-mm (No. 4) sieve. This method shall be used when 100 percent of the soil sample passes the 4.75-mm (No. 4) sieve. See Sections 4 to 6.

Method B-Using soil material passing the 19.0-mm (¾-in.) sieve. This method shall be used when part of the soil sample is retained on the 4.75-mm (No. 4) sieve. See Sections 7 to 9.

The values stated in SI units are to be regarded as the standard.