Building wall overall pouring material and construction method thereof

Abstract

The invention discloses a building wall overall pouring material, which is composed of the following raw materials by weight percentage: 92-94% of a cementitious material, 6-8% of a thermal insulation lightweight aggregate, and an additive accounting for 3-5% of the total amount of the cementitious material. The building wall overall pouring material provided by the invention has the advantages of good thermal insulation performance, light weight, high compressive strength, and excellent waterproofness and impermeability, improves the comprehensive utilization rate of chemical gypsum, and plays a positive role in environmental protection and comprehensive utilization of renewable resources. The wall poured by the material provided by the invention has superior thermal insulation, heat preservation and sound insulation performance, good compressive and impact strength, excellent weatherability, excellent interfacial properties, and excellent waterproofness and impermeability. The invention also provides a construction method of the building wall overall pouring material, and the construction method is simple, has no need of vibration and tamping, can realize mold removal and curing after final setting, and is low in cost, thus being worthy of popularization.

Description

technical field [0001] The invention relates to the field of building materials, in particular to an integral pouring material for building walls and a construction method. Background technique [0002] Industrial by-products Various chemical hemihydrate gypsum are produced in large quantities in my country, but the comprehensive utilization rate is very low, especially phosphorus hemihydrate gypsum, whose output is about one-third of the total output, but the utilization rate is only 20%, resulting in serious environmental pollution and serious waste of resources. For many years, the country has clarified requirements and policies for the comprehensive utilization of industrial by-product hemihydrate gypsum. [0003] The General Office of the State Council [2013] No. 1 Document [About Forwarding the Green Building Development Plan of the Ministry of Housing and Urban-Rural Development of the Development and Reform Commission] clearly requires the development of lightweight ...

AI Technical Summary

Problems solved by technology

Its main disadvantages are: 1. Its own weight is heavy, and the size of the engineering foundation and beams and columns is increased in the application of construction engineering. The comprehensive cost of the project is high, and it cannot be used in high-rise buildings; The main disadvantages of thermal insulation aerated concrete blocks (boards) are: 1. The production cost is high, and it is very difficult to achieve the ideal price / performance ratio; Combined with beams and columns, it is difficult to meet the code requirements

The common problems of the above materials are high water absorption rate and large shrinkage value, which can easily cause wall cracks in actual construction and application, and the surface paint layer is hollow, cracked and peeled off

The third is hemihydrate gypsum interior wall blocks. The main disadvantages are: 1. Various chemical hemihydrate gypsums vary greatly, and the quality is extremely unstable when used for interior wall blocks. Especially the common problem of phosphorus hemihydrate gypsum is efflorescence. Its comprehensive utilization is curbed; 2. The water absorption rate is high, and it will pulverize when it encounters water. The blocks cannot be used in long-term wet places such as kitchens, bathrooms, etc.; 3. The thermal performance cannot meet the upcoming internal wall insulation requirements

The materials used for external wall insulation are all cement-based materials, that is, the application of cement-based external wall insulation mortar technology. This type of material and construction method have the following disadvantages: 1. The dry shrinkage value of cement-based materials is relatively large, and the area of ​​​​the formed wall is not large Although the wall is not prone to cracks, cracks are very likely to occur in the joints with beams and columns; 2. It is difficult to control the water consumption after mixing lightweight aggregates in the cement base. The slurry is very thick without water, and the machine cannot work. The joint part of the beam cannot be filled with construction, let alone vibrated and compacted. If there is too much water, the slurry will be thin and easy to leak. When pouring and vibrating and tamping, the lightweight aggregate will float up. The density and strength of the formed wall will be uneven, and there will be hot and cold bridges Existence; 3. After the cement-based material is formed, the curing time in the mold is long, the mold occupies a large amount, and the construction cost increases; 4. The initial maintenance of the cement-based material formed wall needs to avoid water, and the later maintenance needs to be moisturized and shaded. The actual construction is very difficult. Large; 5. When using inorganic lightweight aggregate, it is necessary to increase the ratio of cement and lightweight aggregate at the same time, and it can still meet the thermal conductivity and compressive strength required by the national standard. The bulk density is relatively large and the overall cost is high.

The main disadvantages of hemihydrate gypsum-based wall pouring materials are: 1. It cannot be used for exterior walls and damp places; The common problem of alkali curbs its comprehensive utilization

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