A Study of Microproperties of Historical Brick Material and Qualitative Correlation between Strength and Pore Distribution

Adhesion between SRP and masonry: Laboratory simulations of the field moisture and salt conditions

“…The compressive strength of historical bricks has been reported to be on average 10.85.8 MPa in a number of investigated buildings in St. Petersburg, Russia [24], 10.3 MPa in Istanbul, Turkey [25], 11.3 MPa (mostly in the range 2-22 MPa) in Venice, Italy [26], in the range 7-25 MPa in Riga, Latvia [27], and 23 MPa, 30 MPa and 23.5 MPa in different buildings investigated in Italy [28][29]. The mean water absorption value of historical bricks, measured directly or calculated on the basis of open porosity and bulk density values, was reported to be 18-20% in buildings of Henan province [30], 21% in Istanbul [25], 17.7-22.9% in Thailand [31], 15-30% in different buildings in Greece and Turkey [32], 15-29% in Italy [23]. A commercially-available dry-mix mortar with natural hydraulic lime binder was used for the masonry joints (class M5 according to EN 998-2 [33]).…”