AASHTO TP 113-15

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Standard Method of Test for

Determination of Asphalt Binder

Resistance to Ductile Failure

Using Double-Edge-Notched

Tension (DENT) Test

AASHTO Designation: TP 113-151

American Association of State Highway and Transportation Officials

444 North Capitol Street N.W., Suite 249

Washington, D.C. 20001

TS-2b TP 113-1 AASHTO

Standard Method of Test for

Determination of Asphalt Binder

Resistance to Ductile Failure Using

Double-Edge-Notched Tension (DENT) Test

AASHTO Designation: TP 113-151

1. SCOPE

1.1. This test method covers the determination of an asphalt binder’s resistance to ductile failure using

a double-edge-notched tension test.

1.2. The test is conducted after thermal conditioning to determine the essential work of failure, the

plastic work of failure, and an approximate critical crack tip opening displacement at a specified

temperature and rate of loading.

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

1.4. 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.

2. REFERENCED DOCUMENTS

2.1. AASHTO Standards:

 R 28, Accelerated Aging of Asphalt Binder Using a Pressurized Aging Vessel (PAV)

 T 240, Effect of Heat and Air on a Moving Film of Asphalt Binder (Rolling Thin-Film Oven

Test)

 T 300, Force Ductility Test of Asphalt Materials

3. TERMINOLOGY

3.1. Definitions:

3.1.1. Wt—total work of failure, area under the load versus load-line displacement curve, J (cal).

3.1.2. wt—specific total work of failure (Wt /Bℓ), kJ/m2 (kcal/in.2).

3.1.3. we—specific essential work of failure, the energy required to fracture or break the sample without

plastic deformation away from the fracture zone, kJ/m2 (kcal/in.2).

3.1.4. wp—specific plastic work of failure term, the non-essential work dissipated during the deformation

of a volume of asphalt around the failure zone, MJ/m3 (Mcal/in.3).

3.1.5. β—geometric constant describing the shape of the plastic zone.

TS-2b TP 113-2 AASHTO

3.1.6. δt—critical crack tip opening displacement also referred to as CTOD, mm (in.).

3.1.7. P—load, N (lbf).

3.1.8. d—displacement in test, m (in.).

3.1.9. B—sample thickness, m (in.).

3.1.10. ℓ—ligament length, the space between the notches, m (in.).

3.1.11. σn—net section stress of sample, N/m2 (psi).

4. APPARATUS

4.1. Testing Apparatus—A constant rate of displacement device capable of maintaining displacement

at rates of 100 ± 2.5 mm/min (4 ± 0.1 in./min). The maximum stroke for the instrument(s) shall be

1000 mm (39.5 in.) or greater. The apparatus shall have a set of loading pins that ensure precise

alignment of the sample during the test. The apparatus shall be able to determine displacement to

an accuracy of ± 0.05 mm (± 0.002 in.).

Note 1—The DENT testing apparatus is commonly a force-ductility apparatus installed in a

ductilometer.

4.2. Load Sensor—The sensitivity of the load sensor and recording electronics shall allow the load, P,

to be measured every 0.3 s during the test with an accuracy of at least ± 1 percent. The load sensor

shall be capable of measuring a nominal maximum force of up to 133 N (30 lbf).

4.3. Temperature-Controlled Bath for Testing—The bath shall be large enough to contain the testing

apparatus and samples in their molds prior to testing under 25 mm (1 in.) of water. The equipment

shall be capable of maintaining the water at the testing temperature to an accuracy of at least ±

0.5°C (0.9°F).

4.4. Temperature-Controlled Bath for Conditioning—A bath capable of maintaining a minimum of

25 mm (1 in.) of water over the sample at the conditioning temperature requirements to within

±0.5°C (0.9°F). Typically, the temperature controlled bath for testing is utilized.

4.5. Metal Stirring Rod—Stick capable of stirring the hot asphalt binder vigorously.

4.6. Base Plates—The base plates shall be made of non-absorbent material of sufficient thickness to

prevent deformation and of a sufficient size to hold from one to three molds, but still able to fit in

the temperature-controlled bath for conditioning. The plate shall be uniformly flat to ensure that

the bottom surfaces of each mold will touch it throughout.

4.7. Mold—Consists of two end pieces for each sample and a silicone mold.

Note 2—User agencies and asphalt binder suppliers may agree on an all metal design for the

molds provided it does not deviate from the dimensions and tolerances given.

4.7.1. Silicone Mold—Consists of a silicone mold with the dimensions shown in Figure 1 with capability

of forming three samples.

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摘要：

AASHTO TP 113-15 是美国国家公路与运输协会（AASHTO）发布的一项标准试验方法，全称为《用动态剪切流变仪（DSR）测定沥青结合料的多应力蠕变恢复（MSCR）试验》。该标准主要用于评估沥青结合料在高温条件下的抗永久变形（车辙）能力，通过在不同应力水平下测量其蠕变恢复行为，为改性沥青和传统沥青的高温性能分级提供可靠数据。作为路面工程与材料检测领域的重要技术规范，TP 113-15 被广泛应用于道路设计、施工质量控制及沥青材料研发中，帮助工程人员选择更耐久、抗车辙性能更优的沥青结合料

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AASHTO TP 113-15

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