Preparation method of integrated straw sandwich filling wall and integrated straw sandwich filling wall

Abstract

The invention discloses an integrated straw sandwich filling wall preparation method and an integrated straw sandwich filling wall. The preparation method comprises the steps that a straw sandwich layer is prepared, through holes which are arranged according to rules are formed in a straw block subjected to compression molding, and transition conical surfaces are machined on the upper surface and the lower surface of the straw block respectively; the straw sandwich layer is placed in a mold frame, and the height is set for the straw sandwich layer through the distance of a cushion block and the inner bottom face of the mold frame; uniformly stirred self-compacting concrete and chopped basalt fiber mixed slurry is injected into the mold frame, primary whole casting molding is conducted according to preparation processes from bottom to top, the mixed slurry forms a lower stressed skin on the bottom surface of the straw sandwich layer, the mixed slurry forms an upper stressed skin on the upper surface of the straw sandwich layer, and the mixed slurry forms small columns which are connected with the upper stressed skin and the lower stressed skin in the through holes of the straw sandwich layer. The filling wall has the distinct characteristics and advantages in the aspects of heat preservation, structural integrity, system integration, construction efficiency, environmental friendliness and the like.

Description

technical field [0001] The invention belongs to the field of building structures, building materials and structural bionics, and relates to a preparation method for an assembled integrated straw sandwich filling wall and an integrated straw sandwich filling wall. Background technique [0002] The existing frame structure filled walls are mainly made of porous or hollow fired bricks and various concrete blocks built on site. While improving the problems of ordinary fired bricks such as poor environmental compatibility, heavy weight, and poor seismic performance, they still remain No fundamental technological breakthroughs have been made in terms of thermal insulation, structural integrity, system integration and construction operability. [0003] In terms of thermal insulation performance, due to the poor self-insulation performance of current wall materials, most of them use external wall insulation to improve their thermal insulation performance. Thermal insulation materia...

AI Technical Summary

Problems solved by technology

[0002] The existing frame structure filled walls are mainly made of porous or hollow fired bricks and various concrete blocks built on site. While improving the problems of ordinary fired bricks such as poor environmental compatibility, heavy weight, and poor seismic performance, they still remain No fundamental technological breakthroughs have been made in terms of thermal insulation, structural integrity, system integration, and construction operability.

[0003] In terms of thermal insulation performance, due to the poor self-insulation performance of current wall materials, most of them use external wall insulation to improve their thermal insulation performance.

Thermal insulation materials are mainly chemical synthetic organic materials, which have problems such as poor environmental protection, prominent fire hazards, and poor weather resistance. Prone to problems such as hollowing or falling off

If the wall cannot achieve high-efficiency thermal insulation, it will inevitably increase resource consumption and environmental pressure due to cooling or heating

On the other hand, my country produces 900 million tons of straw every year, but the resource utilization rate is very low, which not only causes a waste of resources, but also causes serious air pollution due to incineration, which aggravates the severity of smog

[0004] In terms of structural integrity and mechanical properties, affected by factors such as the water content of the block, the water retention and workability of the masonry mortar, the unevenness of the thickness of the mortar joints, the deformation difference of different materials, and the swelling and shrinkage of the bricks, the Under the action of temperature and dry-wet cycle, the compressive strength and bonding strength of masonry mortar are obviously discrete, which weakens the overall performance of the wall. Under the action of earthquakes, the wall is prone to slip damage along the horizontal direction of the mortar joint.

The bonding surface between the plastering layer and the wall is more in a state of shear or tension, causing cracks in many places on the wall, which affects the decoration and use effect

[0005] In terms of construction operability and system integration, the construction quality is significantly affected by the level of manual technology, and most of the on-site workers have not received professional training. In addition, the material properties and structure have high requirements for construction quality, which leads to the fullness of the mortar joints. , block lap length, staggered joints, etc. are difficult to meet the specification requirements

On-site masonry is less economical as labor costs continue to rise

Because block masonry, mortar plastering and decoration, pipeline pre-embedding, etc. are all segmented and batched, the system integration of the wall is poor, which affects the construction quality and efficiency

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