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In view of the problem of interlayer displacement of asphalt pavement, a pavement material shear (variable angle shear) instrument was designed and developed for interlayer shear strength testing.

Marshall tester for asphalt mixture: products that meet the technical requirements of the standard "Marshall tester for asphalt mixture" (GB/T11823). For asphalt mixtures used in highways and first-class highways, automatic Marshall testers should be used. Computers or X-Y recorders should be use...

Background As of 2019, the total length of highways in China has reached 4.8465 million kilometers, with 142600 kilometers of expressways, ranking first in the world. At the same time as the rapid construction of highways in China, it has also entered a continuous period of large-scale maintena...

Asphalt ductility refers to the ductility of asphalt. The asphalt ductility test is to make asphalt into an 8-shaped standard test piece. According to the requirements, the temperature is usually 25℃, 15℃, 10℃, and 5℃, and the length (cm) when it is stretched to the breaking point at a speed of 5...

As one of the three major indicators for asphalt evaluation, softening point has an important impact on the performance of asphalt materials and road engineering. First, asphalt softening point is one of the important factors to measure asphalt adhesion. The higher the softening point of asphalt,...

The basic principle of resonance column test, in short, is to use a specially designed device to excite a cylindrical rock and soil sample, causing it to produce horizontal torsional vibration or vertical vibration, and achieve Resonance of vibration modes. Under this resonance condition, measur...

There are many technical misconceptions among testing machine procurement personnel regarding the selection of testing machines. We are now organizing the existing problems in the hope of providing assistance to users in their selection process! Xi'an Concrete Testing Instrument Sharing: Technica...

The test indicators of soil include physical indicators (weight, water content, soil particle density, etc.) and mechanical indicators (shear strength, compression modulus, permeability coefficient, etc.). Soil sampling should be carried out during engineering geological survey, and specific data...

Introduction to asphalt mixture Asphalt mixture is a general term for a mixture made by mixing mineral aggregates and asphalt binders. According to the material composition and structure, it is divided into continuous grading and discontinuous grading mixtures. According to the mineral grading c...