彩色SCC修复层的界面结合强度:实验与优化研究

IF 3 Q2 ENGINEERING, CIVIL

Journal of Structural Integrity and Maintenance Pub Date : 2023-04-20 DOI:10.1080/24705314.2023.2170620

Oveys Ghodousian, Reyes Garcia, Vahid Shafaie, A. Ghodousian

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引用次数: 0

摘要

摘要本研究通过实验和分析研究了彩色SCC修复层的界面结合强度。制备了10种含有5%、10%和15%蓝色、绿色或红色颜料的SCC混合物，以检查其新鲜性能。随后，使用拉拔和推出试验对60个彩色SCC试样进行测试，以评估界面粘结强度。结果证实，颜料降低了SCC的力学性能及其与混凝土基体的粘结强度，其中红色颜料降低了（高达41%）界面粘结强度。结果表明，推出试验可以有效地确定SCC修复层与基体之间的界面剪切结合强度。提出了一种GNNC改进的PSO算法来精确计算（R2 = 0.95）着色SCC修复层的界面结合强度。本研究有助于开发更有效的测试方法和更准确的模型来计算本研究中使用的SCC修复层的界面结合强度。

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Interfacial bond strength of coloured SCC repair layers: an experimental and optimisation study

ABSTRACT This study investigates experimentally and analytically the interfacial bond strength of coloured SCC repair layers. Ten SCC mixes with 5%, 10% and 15% of blue, green or red pigments were produced to examine their fresh properties. Subsequently, 60 coloured SCC specimens were tested to assess interfacial bond strength using pull-off and push-out tests. The results confirm that pigments reduce the mechanical properties of SCC and its bond strength to concrete substrates, with red pigment reducing (by up to 41%) interfacial bond strength. It is shown that the push-out test is effective to determine the interfacial shear bond strength between the SCC repair layers and substrates. A GNNC-Modified PSO algorithm is proposed to calculate accurately (R2 = 0.95) the interfacial bond strength of coloured SCC repair layers. This study contributes towards developing more effective test methods and more accurate models to calculate interfacial bond strength of the SCC repair layers used in this study.

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来源期刊

Journal of Structural Integrity and Maintenance ENGINEERING, CIVIL-

CiteScore

3.90

自引率

9.50%

发文量