Open AccessBrickwork Chemical Corrosion Features
Author(s) -
D. Yu. Zheldakov
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/459/6/062089
Subject(s) - brickwork , mortar , brick , masonry , cementitious , durability , materials science , cement , corrosion , calcium hydroxide , leaching (pedology) , aluminosilicate , ceramic , metallurgy , composite material , geology , chemical engineering , engineering , chemistry , civil engineering , biochemistry , soil science , soil water , catalysis
The use of multilayer enclosing structures in modern construction poses a new task of studying the mutual influence of all materials of multilayer structures on the durability of the structure as a whole. Masonry is the oldest and most representative multi-component envelopes. This work is devoted to the study of the processes of chemical destruction, taking into account the mutual influence of building ceramics (clay bricks) and cement-sand mortar. The article deals with the main process of destruction of materials, based on the destruction of the amorphous part of the brick under the influence of calcium hydroxide, penetrating into the brick of cement-sand mortar, where it is produced in the process of dehydration of calcium silicates and aluminosilicates (leaching reaction). We consider the side processes of the first type, taking into account the presence in the amorphous phase of brick oxides of alkali and alkali-earth metals.