Self-heating type anti-frost-cracking concrete building outer wall

Abstract

The invention discloses a self-heating type anti-frost-cracking concrete building outer wall, and belongs to the technical field of building outer walls. The building outer wall can realize that on the basis of traditional anti-frost concrete, a gap is actively formed through a mode of autonomously sensing external cold energy, so that external air can enter the gap, a self-cracking heating pipe preset inside the gap is frozen and cracked in advance, heat dissipation powder in the pipe is released, a large amount of heat is released through the reaction characteristic of the heat dissipation powder and oxygen in air, the interior of concrete is heated through a self-contracting heat conduction pipe, meanwhile, half softening is achieved after solid is converted into liquid based on the phase change heat storage characteristic of a double-state filling body in the self-contracting heat conduction pipe, at the moment, an expansion bag on the other half extrudes the double-state filling body through the thermal expansion effect to force the double-state filling body to transmit extrusion force into the concrete, so as to compensate expansion of the concrete, the cracking phenomenon ofthe concrete is remarkably improved, and the strength of the building outer wall is improved.

Description

technical field [0001] The invention relates to the technical field of building exterior walls, in particular to a self-heating anti-freezing and cracking concrete building exterior wall. Background technique [0002] The outer wall is defined by the judgment method. Let A-B be a wall. If the A-B wall line can cut the relevant enclosure structure, it is an inner wall, otherwise it is an outer wall. From an architectural point of view, the enclosure of a building to form an indoor and outdoor boundary component is called an exterior wall. Its functions are: bear a certain load, shelter from wind and rain, thermal insulation, noise prevention, fire safety, etc. [0003] At present, the external walls of buildings are generally made of concrete, but expansion cracks are often prone to occur. Expansion cracks are due to the uneven expansion of various parts of the concrete, which locally generates tensile stress in the concrete, and the tensile performance of concrete is far lo...

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Problems solved by technology

[0003] At present, the external walls of buildings are generally made of concrete, but expansion cracks are often prone to occur. Expansion cracks are due to the uneven expansion of various parts of the concrete, which locally generates tensile stress in the concrete, and the tensile performance of concrete is far lower than the compressive performance. Expansion cracks develop in concrete when the stress exceeds the ultimate tensile strength of the concrete

[0004] In construction engineering, the appearance of cracks will reduce the strength, stiffness and durability of the concrete structure, affect the safety of the structure, reduce the service life of the building, and endanger the safety of people and property in serious cases. In the prior art, concrete mixed with Add antifreeze to resist frost cracking, but the effect is poor

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