Adhesive performance of acrylic modified concrete interface in cold environment
Source abstract
Abstract
The widespread distribution of saline soil in the severe cold regions of northwest China has caused dual damage to concrete structures, including freeze-thaw cycles and sulfate erosion, seriously threatening the adhesive performance of interface agents. To solve the problem, the evolution law of the interface adhesive performance of the interface agent in standard curing, natural exposure, freeze-thaw cycle and sulfate attack environment was studied by modified acrylate lotion. The results indicated that environmental factors have a significant impact on interface strength, with the destructive effect of freeze-thaw cycles being the most prominent. The modified acrylate lotion improved the interface performance through a triple action mechanism: (1) penetrated the matrix to form a pore bolt structure, enhancing the mechanical anchoring effect; (2) The complexation of carboxylic acid carbonyl groups with Ca 2+ enhanced the chemical adhesive strength; (3) Its flexibility and filling effect reduced freezing pressure, refined pores, and effectively inhibited water migration and ion erosion. The study further revealed the key mechanisms of interface pore coarsening, and pore plug structure degradation in freeze-thaw environments, providing new solutions and theoretical support for concrete repair in cold regions.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Innovative concrete reinforcement materials · Concrete and Cement Materials Research · Structural Behavior of Reinforced Concrete
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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