Causes peel off the outer layer of face brick
Abstract
Causes peel off the outer layer of face brick
Incoming article date: 08.02.2018Results of researches of a ceramic brick are presented. Durability of a brick makes: at compression – more than 10 N/mm2, at a bend – more than 3 N/mm2, water absorption of 10,3%. According to the obtained data the brick conforms to requirements of standards of the Russian Federation. The hypothesis of peeling of a front layer of a brick because of low frost resistance is offered. By results of a X-ray phase research minerals have been identified: quartz, white mica, hydrowhite mica, illit, calcite; existence in a ceramic brick of minerals sillimante and mullite as a result of the phase analysis isn't revealed. Results of the phase analysis are confirmed by data of the thermal analysis. The received results allow to approve about insufficient for formation of minerals sillimante and mullite to temperature of roasting of a ceramic brick. It has exerted impact on decrease in its durability in the conditions of sign-variable temperatures (low frost resistance).
Keywords: face brick, research, brickwork, peel, defect, strength, frost resistance, water absorption, test, mineral