Experimental evaluation of the shear strength of aerial lime mortar brickwork by standard tests on triplets and non-standard tests on core samples. (1st April 2017)

• Record Type: Journal Article
• Authors: Pelà, Luca; Kasioumi, Konstantina; Roca, Pere
• Is Part Of: Engineering structures. Volume 136(2017:Apr. 01)
• Page Start: 441
• Page End: 453
• Publication Date: 2017-04-01
• Subjects: MDT Minor Destructive Testing -- LVDT Linear Variable Differential Transformer -- DPT Double Punch Test; Masonry -- Triplets -- Coring -- Double Punch Test -- Brazilian test -- Minor Destructive Testing (MDT) -- Mohr-Coulomb criterion -- Friction -- Cohesion -- Bond interface; Structural engineering -- Periodicals; Structural analysis (Engineering) -- Periodicals; Construction, Technique de la -- Périodiques; Génie parasismique -- Périodiques; Pression du vent -- Périodiques; Earthquake engineering; Structural engineering; Wind-pressure; Periodicals; 624.105
• DOI: 10.1016/j.engstruct.2017.01.028
• Languages: English
• ISSNs: 0141-0296

Abstract

Highlights: Shear characterisation of aerial lime mortar brickwork one year after construction. Standard shear tests on triplets according to EN 1052-3:2002. Extraction of core samples from masonry walls to simulate MDT in-situ sampling. Non-standard shear tests by Brazilian test on cores with diametric mortar joint. Evaluation of shear failure envelopes of bond interface and mortar joint. Abstract: This paper presents the results of an experimental program carried out in the laboratory to evaluate the shear strength of aerial lime mortar brickwork. Masonry triplets and walls were tested after one year from their construction by adopting two different testing methods. The first approach consisted in the shear tests of masonry triplets, whereas the second technique was based on core drilling from walls of 90 mm diameter cylindrical specimens to be subjected to Brazilian tests with varying inclination of the diametric mortar joint. The first method is more adequate to characterize new masonry, whilst the second one is a suitable MDT procedure for the analysis of existing structures. The experimental results from standard and non-standard tests were properly investigated in order to obtain the shear failure envelope of the bond interface and mortar joint. The comparisons between the different tests and their interpretative theories show the possibilities of the novel non-standard testing method for the evaluation of the shear strength of structures of the built cultural heritage.