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Abstract

In recent years, the sound development of China’s high-speed railways is stable. The high-performance concrete applied will inevitably have many damage problems in the future service process. The search for the application of new high-performance repair materials in high-speed railways has become increasingly important. This paper conducted research on the adhesion, strength, and durability of high-performance magnesium phosphate cement repair materials, and the relevant conclusions are as follows: ① The optimal alkali-acid ratio of high-performance magnesium phosphate cement repair materials is 4:1; ② The optimal dosage of composite retarder for high-performance magnesium phosphate cement repair material is 8%. The comprehensive macro and micro conclusions show that under the action of the optimal acid-base ratio and the optimal composite retarder, the crystal phase arrangement of the microscopic morphology tends to be dense, and its adhesion, strength, and durability are the best.

Publication Date

6-18-2022

DOI

10.14048/j.issn.1671-2579.2022.03.034

First Page

190

Last Page

194

Submission Date

May 2025

Reference

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