T/JSJTQX 03-2009 Active Group standards

T/JSJTQX 03-2009 Road asphalt test specification for rotational viscosity at 60℃

Publish Date: 2019-07-29 Implement Date: 2019-08-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Price: $ 20.00

Out of stock

Basic Information

Standard Code: T/JSJTQX 03-2009

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: Construction engineering construction machinery

ICS Name: Civil Engineering Comprehensive

Publish Date: 2019-07-29

Implement Date: 2019-08-01

Scope

Scope: This standard specifies the requirements for instrumentation, test procedures, test reports, allowable errors, and test record forms for the 60°C rotational viscosity test of highway asphalt. This standard applies to the determination of the viscosity of road petroleum asphalt and matrix asphalt, as well as SBS modified asphalt at 60°C using the Brookfield viscometer. Main technical content: For the 60°C viscosity test of highway asphalt, the capillary method and the Brookfield viscometer method are generally used. However, the test methods are not standardized, and the specific operations and parameter settings during the test process are not standardized, leading to large variability in test results. Through extensive research and consultation with 24 units, this standard formulates the 60°C rotational viscosity test protocol for highway asphalt, clarifying requirements for test instruments, rotor models, sample preparation, rotor speed, termination conditions, and allowable errors, as follows: Test instrumentation: RV standard high-temperature viscosity measurement system; Rotor model: For road petroleum asphalt and matrix asphalt, select rotor No. 27; for SBS modified asphalt, select rotor No. 7; Sample preparation: For road petroleum asphalt and matrix asphalt, place the rotor and sample cylinder in an oven at 145±2°C for 20-30 minutes; for SBS modified asphalt, place the rotor and sample cylinder in an oven at 170±2°C for 20-30 minutes; Rotor speed: When the estimated asphalt viscosity is less than 40,000 Pa·s, the torque reading should be within the range of 10% to 98%, and the torque should be as close to 50% as possible. When the estimated asphalt viscosity is greater than or equal to 40,000 Pa·s, a fixed rotor speed of 0.01 RPM (r/min) should be used; Termination conditions: Read the results every 3 minutes, and the difference between two consecutive results should not exceed 0.5% of the average value; Allowable error requirements: For road petro