Rubber-concrete interface modification method and performance enhancement path

Document Type

Article

Publication Date

10-25-2023

Department

Department of Civil, Environmental, and Geospatial Engineering

Abstract

The recycling of waste tires and their use as cement concrete aggregate can effectively reduce the environmental hazards and the exploitation of natural resources. To address the problem of weak interfacial properties between rubber aggregate and cement stone, more than ten kinds of interfacial modification methods were analyzed, and the influence of different physical and chemical modification methods on the interface performance, mechanical properties, and durability of rubber concrete was summarized. Through the fiber toughening path to further improve the performance of rubber concrete materials, the effect of steel fiber, basalt fiber, polypropylene fiber and polyvinyl alcohol fiber and other commonly used engineering fiber materials on rubber concrete mechanical properties and anti-cracking characteristics was analyzed. The research found that the interface modification can significantly improve the fragile interface of rubber-cement stone and enhance the interfacial bonding performance. The introduction of fibers can effectively improve the anti-cracking characteristics of rubber concrete materials, among which the mechanical strength of steel fiber composite rubber concrete material was significantly improved. The modified rubber aggregate and fiber composite technology can play a “toughening, anti-cracking” synergistic enhancement of cement concrete materials. The existing interface modification technology still had more disadvantages. The problems of environmental secondary pollution and low efficiency of modification needed to be solved by further optimization of the modification technology. The toughening and anti-cracking characteristics of fiber composite rubber concrete materials still should be explored in more depth, and the research on the synergistic mechanism of the two would clarify the performance advantages of fiber composite rubber concrete materials, which can provide an effective scientific basis for practical engineering applications and further expand the “high value” utilization of waste tire solid waste in cement concrete materials. This study would further expand the scale of the utilization of waste tire solids in cement concrete materials.

Publication Title

Huagong Jinzhan/Chemical Industry and Engineering Progress

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