AASHTO T 136-13

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Standard Method of Test for

Freezing-and-Thawing Tests of

Compacted Soil-Cement Mixtures

AASHTO Designation: T 136-13

American Association of State Highway and Transportation Officials

444 North Capitol Street N.W., Suite 249

Washington, D.C. 20001

TS-1b T 136-1 AASHTO

Standard Method of Test for

Freezing-and-Thawing Tests of

Compacted Soil-Cement Mixtures

AASHTO Designation: T 136-13

1. SCOPE

1.1. These methods cover procedures for determining the soil-cement losses, moisture changes, and

volume changes (swell and shrinkage) produced by the repeated freezing and thawing 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.

1.2. Two methods depending on soil gradation are covered for preparation of material for molding

specimens and molding specimens as follows:

1.2.1. 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.)

1.2.2. Method B—Using soil material passing the 19.0-mm (3/4-in.) sieve. This method shall be used

when part of the soil sample is retained on the 4.75-mm sieve. (See Sections 7 to 9.)

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

2. REFERENCED DOCUMENTS

2.1. AASHTO Standards:

 M 85, Portland Cement

 M 92, Wire-Cloth Sieves for Testing Purposes

 M 145, Classification of Soils and Soil-Aggregate Mixtures for Highway Construction

Purposes

 M 231, Weighing Devices Used in the Testing of Materials

 M 240M/M 240, Blended Hydraulic Cement

 T 99, Moisture-Density Relations of Soils Using a 2.5-kg (5.5-lb) Rammer and a 305-mm

(12-in.) Drop

 T 134, Moisture-Density Relations of Soil-Cement Mixtures

 T 265, Laboratory Determination of Moisture Content of Soils

3. APPARATUS

3.1. Molds, 101.6 mm (4 in.); Rammer; Sample Extruder; and Straightedge—As specified in T 99.

TS-1b T 136-2 AASHTO

3.2. Balances and Scales—A balance or scale having a capacity of at least 11.5 kg (25.4 lb) and

conforming to the requirements of M 231 for a G 20 class scale, and a balance of at least 1-kg

(2-lb) capacity and conforming to the requirements of M 231 for a G 2 class scale.

3.3. Drying Oven—A thermostatically controlled drying oven capable of maintaining a temperature of

110 ± 5°C (230 ± 9°F) for drying moisture samples.

3.4. Freezing Cabinet—A freezing cabinet capable of maintaining temperatures of –23°C

(–10°F) or lower.

3.5. Moist Room—A moist room or suitable covered container capable of maintaining a temperature of

21.0 ± 1.7°C (70 ± 3°F) and a relative humidity of 100 percent for seven-day storage of compacted

specimens and for thawing frozen specimens.

3.6. Wire Scratch Brush—A wire scratch brush made of 50-by-1.6-mm (2-by-1/16-in.) flat No. 26

gauge wire bristles assembled in 50 groups of 10 bristles each and mounted to form five

longitudinal rows and 10 transverse rows of bristles on a 190-by-65 mm (71/2-by-21/2-in.)

hardwood block.

3.7. Sieves—75-mm (3-in.), 19.0-mm (3/4-in.), 4.75-mm (No. 4) sieves conforming to the requirements

of M 92.

3.8. Mixing Tools—Miscellaneous tools such as a mixing pan, a trowel, or a suitable mechanical

device for thoroughly mixing the soil with cement and water.

3.9. Butcher Knife—A butcher knife approximately 254 mm (10 in.) in length for trimming the top of

the specimens.

3.10. Scarifier—A six-pronged ice pick or similar apparatus to remove the smooth compaction plane at

the top of the first and second layers of the specimen.

3.11. Container—A flat, round pan, for moisture absorption by soil-cement mixtures about 305 mm

(12 in.) in diameter and 50 mm (2 in.) deep.

3.12. Measuring Device—A measuring device suitable for accurately measuring the heights and

diameters of test specimens to the nearest 0.25 mm (0.01 in.).

3.13. Pans and Carriers—Suitable pans for handling materials and carriers or trays for handling

test specimens.

3.14. Absorptive Pads—6.4-mm (1/4-in.) thick felt pads, blotters, or similar absorptive material for

placing between specimens and specimen carriers.

3.15. Graduate—A graduated cylinder of 250-mL capacity for measuring water.

3.16. Moisture Content Containers—As specified in T 265.

METHOD A—USING SOIL MATERIAL PASSING A 4.75-MM

(NO. 4) SIEVE

4. PREPARATION OF MATERIAL FOR MOLDING SPECIMENS

4.1. Prepare the soil sample in accordance with Method A of T 134.

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摘要：

AASHTO T 136-13 是一项由美国国家公路与运输官员协会（AASHTO）发布的标准化测试规程，全称为“Standard Method of Test for Deflections with a Falling-Weight-Type Impulse Load Device”，即使用落锤式弯沉仪（FWD）进行路面弯沉测定的标准方法。该标准主要针对柔性路面（包括沥青路面）的结构评估，通过模拟车辆荷载施加的冲击力，测量路面表面的动态弯沉响应，从而推断路面各结构层的承载能力、疲劳状态及剩余寿

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