Effects of Nano-liquids on the Durability of Brick Constructions for External Walls

Abstract

The effectiveness of the influence of modifying substances on the properties of ceramic facing brick and masonry surface for decorative external walls is considered in the article. X-ray diffraction and spectral analysis showed that sodium sulfate, potassium sulfate and syngenite are the salt effloresces from the ceramic brick surface. It is established that polymeric one-component coatings based on siloxanes are not effective, especially under the action of alternating temperatures. Studies have shown that the improvement of the performance properties of ceramic facing brick increase due to the surface coating by nano-liquids with the addition of nano-Al 2 O 3 . The surface modification of the ceramic facing brick by hydrophobic nano-liquids allows sealing the structure due to the colmatation of pores, which reduces the capillary tightening of the masonry. It also leads to increased weather resistance and frost resistance of masonry. It is established that the surface protection of brick structures with hydrophobic nano substances provides a decrease in the porosity, increase the water resistance and durability. This allows to confirm the relevance of the revealed influence of the modifiers on the formation of properties and the practical attractiveness of the proposed technological solutions.

Sustainable performance of alkali-activated blast furnace cement concrete with high freeze-thaw resistance

“…This fact can be confirmed by numerous scientific researches concerning durability of structures which are exposed to different aggressive effects, i.e. atmospheric [20], freeze-thaw cycles [21], alkali of aggregate [22], seawater [23], high temperatures [24], fire [25,26], etc. Proposed recommendations to ensure durability of structures while use of recycled concrete [27][28][29].…”

Badania nad odpornością powłok ochronnych dla betonu na działanie wilgoci atmosferycznej

“…However, surveys of structural elements in industrial buildings [1] and bridges [2] demonstrate that several factors affect the durability of concrete or cause structural damage. One of these factors is a change in the internal humidity or temperature of the pores (carbonation, freeze-thaw cycles, wetdry cycles, the influence of chloride salts, and sulphates), as well as the influence of various forms of loading [3][4][5][6].…”

Comparison of influence of surfactants on thermokinetic characteristics of alkali-activated slag cement

“…Increasing the durability of building structures is a relevant global trend in modern materials science. Numerous studies on improving the durability of brick [1], steel [2], wooden [3], concrete [4], reinforced concrete [5] structures, etc. are a confirmation of this trend.…”