Test device and test method for measuring free expansion volume of high polymer

Abstract

The invention provides a test device and a test method for measuring the free expansion volume of a high polymer. The test device for measuring the free expansion volume of the high polymer comprisesa test chamber and a measurement chamber, and the test chamber and the measurement chamber are communicated. The test chamber is provided with a temperature measurement device. The test chamber is further provided with a grouting head and an exhaust valve. A partition plate which divides the measurement chamber into a measurement chamber A and a measurement chamber B is arranged in the measurementchamber. Only the lower ends of the measurement chamber A and the measurement chamber B are communicated, and the measurement chamber A and the measurement chamber B form a communicating vessel. Themeasurement chamber A is communicated with the test chamber A. The measurement chamber B is communicated with the test chamber through the measurement chamber A. Observation windows are arranged on the measurement chamber A and the measurement chamber B respectively. Scales are arranged on the observation windows. The upper end of measurement chamber B is open or provided with a valve communicatedwith the outside. A more complete device is provided for the study of the free expansion characteristic of the high polymer. The acquired test result can provide a basis for the study of the groutingrepair of an infrastructure safety protection high polymer.

Description

technical field [0001] The invention relates to a free expansion test of a high polymer, in particular to a test device and a test method for measuring the free expansion volume of a high polymer. [0002] technical background [0003] Since the reform and opening up, highways, as a product of modern economic development and an important symbol of a country's modern civilization level, are increasingly being valued by countries all over the world. Since the Shanghai-Jiajia Expressway, my country's first expressway, was completed and opened to traffic in 1988, my country's highway industry has entered a new era focusing on the construction of high-grade highways. Under the correct leadership of Xi Jinping, and with the united will, hard work, ingenious and hard work of all road workers, as of the end of 2018, the mileage of my country's expressways has reached about 140,000 kilometers, ranking first in the world. Reform and development go hand in hand, and hard work goes hand ...

AI Technical Summary

Problems solved by technology

Reform and development go hand in hand, and hard work goes hand in hand with brilliance. However, behind the brilliant achievements, there are also some worrying problems. Not long after the concrete pavement was opened to traffic, early failures such as rutting, cracks, muddying, and shifting appeared, while the cement concrete pavement appeared common problems such as cracks, broken slabs, misalignment, mud pumping, subsidence, and joint damage. If these diseases are not repaired and treated in time, the result will be: the degree of damage to the road surface is becoming more and more serious, and the service level, traffic quality and driving safety of the road have been seriously affected

However, if the traditional maintenance method is used, not only the cost is high, but also the traffic is greatly affected, and the roadbed and pavement testing equipment is relatively backward, that is, there is a lack of coordination between the lagging maintenance technology and equipment and the rapid development of road construction. Under this background, under the leadership of Dean Wang Fuming, the School of Environmental Protection of Zhengzhou University, on the basis of years of research, took the lead in launching the rapid maintenance technology of polymer grouting based on non-destructive testing equipment for road surfaces. With the development of science and technology and the enhancement of environmental protection awareness, this technology has achieved many successful application examples in road maintenance and repair due to its advantages such as small impact on the environment, wide application range, strong anti-seepage ability, and fast reinforcement speed.

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