Plaster concrete wall material and partition batten board

Abstract

The invention discloses a plaster concrete wall material. The plaster concrete wall material is mainly prepared from, by mass, 50.3%-62.9% of plaster concrete bonding materials, 0.02%-0.05% of an activating additive and 32.7%-47.1% of water. The invention further provides a preparation method of the plaster concrete wall material and a partition batten board prepared from the plaster concrete wall material. According to the plaster concrete wall material and the partition batten board, the ratio of water to material is guaranteed through appropriate mixing amount plaster, the production technology adopts casting molding, tamping vibrating is not needed, mechanical core pulling can be achieved during molding, on the premise that all performance indexes are guaranteed, the core pulling rate is controlled to be about 20%, the unit weight of a finished product is reduced, and the raw materials are saved. Dimensions of beams, columns and foundations are reduced during practical application, and the engineering manufacturing cost and the comprehensive manufacturing cost are reduced.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a gypsum concrete wall material and a partition wall strip. Background technique [0002] The comprehensive utilization of industrial by-product gypsum and agricultural waste rice husk and straw is not only beneficial to environmental protection, but also conforms to the theory of renewable resource utilization and development of circular economy. Vigorously develop green building materials that are safe, durable, energy-saving, environmentally friendly, and convenient for construction, and promote new Building industrialization and prefabricated structural systems suitable for industrial production are the specific requirements of my country's green building action plan. [0003] Commonly used partition wall materials are: first, gypsum blocks or boards, which are poured with pure gypsum or mixed with a small amount of fly ash. The quality requirements of gypsum are r...

AI Technical Summary

Problems solved by technology

[0003] Commonly used partition wall materials are: first, gypsum blocks or boards, which are poured with pure gypsum or mixed with a small amount of fly ash. The quality requirements of gypsum are relatively high, and most of the blocks produced by chemical gypsum have "pan-alkaline" phenomenon in actual application, such as phosphogypsum, fluorogypsum, etc., which directly affect the comprehensive development and application; ③The water resistance of gypsum makes the blocks unusable In humid places such as kitchens and bathrooms; ④Gypsum is brittle, and the damage rate is high during molding, handling, and masonry; the second is autoclaved aerated concrete blocks or slabs, which are divided into two types: sand aerated and ash aerated according to the material , its disadvantages: ① high water absorption, large dry shrinkage value, easy to crack the masonry wall; ② low compressive and flexural strength, pull-out resistance, hanging strength is not strong, which brings inconvenience to building decoration and residents; ③ the sand Quartz sand, the main raw material for aerated gas, has high production costs and has a certain impact on the ecological environment; ④The investment in equipment is large; the third is concrete blocks or bricks, and its disadvantages are: Its own weight is heavy, and the overall cost of the project will be increased in practical applications, and it cannot be used in high-rise buildings. High water absorption, large dry shrinkage value, easy to produce cracks in masonry walls

[0004] At present, most of the lightweight partition wall slats used in construction are composite lightweight slats, that is, the two sides are prefabricated finished thin calcium-silicon boards, and the middle is cast with polystyrene granular concrete. The main disadvantages are: The process is complicated. The degree of automation is not high. Before casting, the formwork and silicon-calcium board must be manually erected in advance. During casting, it must be pounded to prevent core pulling, and manual operation must be performed when removing the formwork; The final setting time is long, more than 8 hours, and the mold and site occupy a large amount; The lightweight aggregate uses polystyrene particles, which has poor flame retardant and sound insulation effects, and cannot meet the requirements of green building materials

Instead of using calcium-silicon board as the outer formwork casting board, the limit length can only be 1.5 meters

In addition, gypsum is used as the main material mixed with a little cement and fly ash to produce lightweight partition wall panels. The disadvantages are: The characteristic of gypsum powder when it meets water prevents the board from being used in humid places such as kitchens and bathrooms; When the mixing slurry is mixed with lightweight aggregates, the floating of lightweight aggregates cannot be evenly distributed, and the texture of the forming board is not uniform, and the compressive strength, flexural strength, and sound insulation effects are obviously not good; Partition wall slats not mixed with lightweight aggregates have heavy self-weight and cannot be transported within a short time after final setting, occupying a large amount of molds and space requirements, and limited production capacity

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