Interface mortar for steel structural exterior wall with anticorrosive coating layer

Abstract

The invention relates to an interface mortar for a steel structure outer wall with an anticorrosive coating layer. The interface mortar comprises, by weight, 200-700 parts of cement, 200-800 parts ofsands, 30-120 parts of redispersible latex powder, 0.3-3.0 parts of a water repellent, 0.1-2.0 parts of a defoaming agent and 0.2-2.5 parts of cellulose ether. The interface mortar can effectively ensure the adhesion with the surface of a steel structure base layer with the anticorrosive coating layer, and has good bonded performance with a thermal insulation mortar, a bonding mortar, a plasteringmortar, a waterproof mortar and other mortars. Compared with traditional interface mortars for concrete and the masonry base layer, the interface mortar in the invention has the advantages of good affinity with the surface of the steel structure with the anticorrosive coating layer, high tensile bond strength, good bonded performance, small decrease of the tensile bond strength after water immersion, freeze-thawing and heat treatment, good durability, and meeting of the requirements of the use environment of the steel structure exterior wall with the anticorrosive coating layer.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to an interface mortar with an anti-corrosion coating for steel structure exterior walls. Background technique [0002] Compared with traditional houses, steel structure houses have strong advantages in terms of structural performance, use function, design and construction, and comprehensive cost. The development of steel structure houses is not only of epoch-making significance in promoting the industrialization of houses and improving the quality of houses, but also It is conducive to promoting the technological progress of my country's construction industry, and is conducive to stimulating domestic demand in the metallurgical industry and promoting the development of energy-saving and environmentally friendly building materials. It is one of the transformation and upgrading directions of the construction industry. [0003] Envelope system is an important system for stee...

AI Technical Summary

Problems solved by technology

The interface mortar is used as the connecting layer between the base layer and the cladding layer of the enclosure system. Its tensile bond strength is a very important indicator. Due to the insufficient performance of the interface mortar, the enclosure system is hollow, falling off, and poorly bonded, etc. There are endless problems, and the existing interface mortar is almost only suitable for the bonding between concrete, masonry base and cladding materials. At present, there is still a lack of single-component interface mortar specially suitable for steel structure exterior walls with anti-corrosion coatings.

[0005] Compared with concrete and masonry bases, the surface density of steel structure bases with organic anti-corrosion coatings is much higher, and they are extremely smooth, hardly absorb water, and can provide extremely weak mechanical occlusal force, so the steel structure has a strong impact on the interface mortar. There are special requirements. The interface mortar used for traditional concrete structures and masonry structures is not suitable for steel structures with organic anti-corrosion coatings, and its bonding performance cannot meet the requirements; in addition, the interface mortar for external walls is also Durability issues such as rain wetting, freeze-thaw effects, and decrease in tensile bond strength after thermal aging should be considered

Images