Test of three-storey confined masonry structure built from clay blocks and PU glue

Gams, Matija (author), Triller, Petra (author), Tomaževič, Miha (author), Jäger, Andreas (author)

The paper presents an experimental test of a nearly full-scale three-storey model of a confined masonry structure. The walls were constructed using newly developed clay masonry blocks, with large holes filled with thermal insulation and polyurethane glue instead of mortar. In the construction, relatively thick 38 cm walls and large tie-columns with 25 cm × 25 cm plan dimensions. The test model was built as confined masonry according to Eurocode 8. The innovative materials and construction were developed for thermal efficiency and the test was intended to verify the structural response. The model, test setup, and test procedures are described, and the results of the tests are analysed. The building responded primarily in shear, and ultimately failed in the ground floor in a storey mechanism, but there was also substantial damage on the floor above. Due to the non-standard dimensions of the tie-columns and because masonry was thicker than the tie-columns, the in-plane loaded walls developed an interesting response mechanism in which protruding masonry sheared off. Although this did not significantly impact the overall response, it led to the earlier onset of the significant damage limit state of the structure. The model responded well with wide hysteretic loops and distributed damage, which indicated large energy dissipation capacity, and the response envelopes showed gradual strength deterioration after peak load. The response of the model was quantitatively estimated using the N2 method. Calculations showed that the tested model could withstand a design seismic load corresponding to a 0.21 g peak ground acceleration with significant damage and almost 0.52 g before collapsing. The overstrength was estimated at 1.71.

• Language: English
• Keywords: confined masonry, seismic response, vertically perforated blocks, polyurethane glue
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: FGG - Faculty of Civil and Geodetic Engineering
• Publication status: Published
• Publication version: Version of Record
• Year: 2024
• Number of pages: 18 str.
• Numbering: Vol. 91, art. 109696
• PID: 20.500.12556/RUL-158299
• UDC: 69
• ISSN on article: 2352-7102
• DOI: 10.1016/j.jobe.2024.109696
• COBISS.SI-ID: 197310723
• Publication date in RUL: 03.06.2024

Record is a part of a journal

• Title: Journal of building engineering
• Publisher: Elsevier
• ISSN: 2352-7102
• COBISS.SI-ID: 525380633

Licences

• License: CC BY-NC 4.0, Creative Commons Attribution-NonCommercial 4.0 International
• Link: http://creativecommons.org/licenses/by-nc/4.0/
• Description: A creative commons license that bans commercial use, but the users don’t have to license their derivative works on the same terms.

Projects

• Funder: ARRS - Slovenian Research Agency
• Project number: J2-6749
• Name: Obnašanje večetažnih strižnih sten z odprtinami pri potresni obtežbi

• Funder: ARRS - Slovenian Research Agency
• Project number: P2-0185
• Name: Potresno inženirstvo