Rubber asphalt sample holding container with bottom and lateral dual insulation effect

Abstract

The invention discloses a rubber asphalt sample holding container with bottom and lateral dual insulation effect. The rubber asphalt sample holding container comprises a flat-bottomed glass dish and a circulating water bath, wherein the outer of the flat-bottomed glass dish is provided with an insulating glass dish; the outer sidewall of the flat-bottomed glass dish is provided with a groove A and a groove B; the inner sidewall of the insulating glass dish is provided with a water inlet channel matching with the groove A and a water outlet channel matching with the groove B; the groove A and the water inlet channel form a water passing channel I together; the groove B and the water outlet channel form a water passing channel II together; the flat bottom surface at the bottom of the flat-bottomed glass dish is provided with a water channel B; the bottom of the flat-bottomed glass dish is provided with a water inlet B and a water outlet B; a water inlet A at the top end of the water passing channel I, a water outlet A at the top end of the water passing channel II, the water inlet B and the water outlet B are separately and hermetically communicated with the circulating water bath via insulation water pipes. The rubber asphalt sample holding container can lower the loss rate of the heat of a rubber asphalt sample, guarantees that operators has enough operation time and reduces errors of test results.

Description

technical field [0001] The invention relates to the technical field of asphalt testing equipment, in particular to a rubber asphalt sample container with double insulation functions at the bottom and side. Background technique [0002] After half a century of development, rubber asphalt has become one of the main paving materials in the United States, South Africa, Japan, China and other countries. According to previous studies, there is a lack of chemical reaction between rubber particles and asphalt, and the compatibility between the two is poor. Rubber particles cannot be distributed in asphalt in a micron-scale state like SBS and other polymer modifiers in asphalt. Therefore, it is no longer appropriate to use penetration as an evaluation index of rubber asphalt. Researchers at home and abroad have proposed to use cone penetration test to evaluate the performance of rubber asphalt, and the reliability of the test results is better. [0003] During the test, first pour t...

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Problems solved by technology

During this period of time, due to the difference in room temperature, the rubber asphalt sample in the sample container will drop by 0.5°C to 1°C, and cannot reach the specified test temperature, which results in a small test result.

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