A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Interfacial Performance between Repairing Mortars and Substrate Lime: Bond Strength and Carbonation
Historical buildings made of lime material seriously deteriorate, and a sustainable repair strategy is essential. The performance requirements of the repair material should be compatible with substrate lime in terms of interfacial strength, failure modes , and carbonation of substrate lime. Therefore, this study was carried out using five types of repairing mortar mixes, and the bond performance was investigated by interfacial bond strength testing, including the carbonation test at bonded surfaces. Experimental test results revealed that lime and silica fume modification improved the bond performance with respect to tension, shear, and tension–shear. Among the repairing mixes, the lime–cement–silica fume mix indicates higher bond performance and proper cohesive failure as compared with the others that typically exhibit adhesive or substrate failure. Moreover, XRD testing reconfirms that the addition of cement and the pozzolanic material in the lime-based repair mortar mix enhances the bond strength with the formation of calcium silicate hydrate. As a result, the lime–cement–silica fume mix can guarantee good bond performance including cohesive failure at the carbonated lime substrate surface.
Interfacial Performance between Repairing Mortars and Substrate Lime: Bond Strength and Carbonation
Historical buildings made of lime material seriously deteriorate, and a sustainable repair strategy is essential. The performance requirements of the repair material should be compatible with substrate lime in terms of interfacial strength, failure modes , and carbonation of substrate lime. Therefore, this study was carried out using five types of repairing mortar mixes, and the bond performance was investigated by interfacial bond strength testing, including the carbonation test at bonded surfaces. Experimental test results revealed that lime and silica fume modification improved the bond performance with respect to tension, shear, and tension–shear. Among the repairing mixes, the lime–cement–silica fume mix indicates higher bond performance and proper cohesive failure as compared with the others that typically exhibit adhesive or substrate failure. Moreover, XRD testing reconfirms that the addition of cement and the pozzolanic material in the lime-based repair mortar mix enhances the bond strength with the formation of calcium silicate hydrate. As a result, the lime–cement–silica fume mix can guarantee good bond performance including cohesive failure at the carbonated lime substrate surface.
Interfacial Performance between Repairing Mortars and Substrate Lime: Bond Strength and Carbonation
J. Mater. Civ. Eng.
Rashid, Khuram (author) / Tahir, Muhammad Akram (author) / Fatima, Miral (author) / Ju, Minkwan (author)
2023-05-01
Article (Journal)
Electronic Resource
English
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