Lightweight concrete wall body having self-heat preservation effect

Abstract

The invention relates to the technical field of concrete, in particular to a lightweight concrete wall body having a self-heat preservation effect. The lightweight concrete wall body is prepared fromthe following raw materials: 15 to 35 parts of pulverized fuel ash, 10 to 18 parts of ash calcium powder, 8 to 15 parts of mountain flour 70 sand, 3 to 11 parts of glass beads, 20 to 35 parts of Portland cement, 5 to 10 parts of porous fiber, 5 to 12 parts of kieselguhr, 4 to 11 parts of attapulgite, 0.5 to 3.6 parts of first foaming agent, 20 to 48 parts of lightweight aggregate, 2 to 7 parts ofwaste rubber powder, 0.6 to 1.8 parts of water reducing agent and 1 to 5 parts of other assistants, wherein the porous fiber is prepared from the following substances: 15 to 36 parts of first polymeremulsion, 13 to 49 parts of second polymer emulsion, 0.3 to 6.4 parts of second foaming agent, 3 to 9 parts of soluble metal salt, 5 to 25 parts of chain extender and 6 to 23 parts of graphene oxide.According to the lightweight concrete wall body disclosed by the invention, by adding the glass beads, the porous fiber and the waste rubber powder in concrete, a rich composite porous structure not only is capable of effectively reducing self weight of the concrete and meeting the requirements on light weight, but also has higher sound insulation and heat preservation properties, so that the self-heat preservation effect of the lightweight concrete wall body is ensured.

Description

technical field [0001] The invention relates to the technical field of concrete, in particular to a lightweight concrete wall with self-insulation effect. Background technique [0002] The development of wall self-insulation technology is self-evident for the importance of energy saving and emission reduction in the construction industry. The traditional wall self-insulation technology means that the wall enclosure structure materials used have certain thermal insulation performance, which constitutes The wall can meet the requirements of energy saving of 50% or 65%. Building blocks with good thermal insulation performance and light-weight masonry mortar are used to make the heat transfer coefficient of the wall meet the local design requirements, and the cast-in-place beams , Columns and other parts with poor thermal performance shall be treated with external insulation. [0003] In order to achieve the purpose of environmental protection, energy saving and low cost, foame...

AI Technical Summary

Problems solved by technology

The existing lightweight foamed concrete is a brittle material, which is easy to produce micro-cracks due to shrinkage, and the strength of this lightweight foamed concrete is generally poor, so it cannot be used in load-bearing walls and can only be used for non-load-bearing partition walls or thermal insulation material, therefore, providing a kind of anti-cracking, high-strength foam concrete wall becomes the technical problem urgently to be solved by those skilled in the art

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