Fabricated concrete brick based on machine-made sand material and preparation method of fabricated concrete brick

Abstract

The invention relates to the field of building materials, in particular to a fabricated concrete brick based on a machine-made sand material and a preparation method of the fabricated concrete brick. Mortise and tenon joint structures used for splicing are arranged at the two ends of the concrete brick; a plurality of inserting blocks and inserting grooves are formed in the middles of the lower surface and the upper surface of the concrete brick at intervals; a plurality of vertical through holes are formed in one side of each inserting block at intervals in a penetrating mode; an additional material insertion cavity is formed in the other side of each inserting block; flash grooves are formed around the inserting grooves; a plurality of transverse through holes are formed in the sides, close to the vertical through holes, of the two end faces of a brick body in a penetrating mode from top to bottom at intervals; and the transverse through holes communicate with the vertical through holes. On one hand, rapid connection and splicing of concrete bricks are achieved, and the concrete brick is high in positioning precision, stable and compact in connection and suitable for later expansion construction; and on the other hand, the provided preparation method guarantees the strength of the brick body, and the concrete brick is light in weight, high in compressive strength, good in bearing capacity and easy to install and operate, and has the practical effect in a practical sense.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to an assembled concrete brick based on machine-made sand material and a preparation method thereof. Background technique [0002] At present, my country's building energy conservation uses concrete bricks to replace clay red bricks. However, during the application process, the walls made of porous bricks have separation, hollowing, and step-like cracks on some walls due to insufficient connection fastness. In addition, the existing concrete bricks are fixedly connected by concrete, but the existing concrete brick structure is relatively square, and when subjected to a large external force, the concrete bricks are easy to separate from each other, resulting in damage to the wall to a certain extent. To a certain extent, it affects the overall quality of the construction project and the popularization and application of concrete bricks, especially in some applications that n...

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Problems solved by technology

[0002] At present, my country's building energy conservation uses concrete bricks to replace clay red bricks. However, during the application process, the walls made of porous bricks have separation, hollowing, and step-like cracks on some walls due to insufficient connection fastness. In addition, the existing concrete bricks are fixedly connected by concrete, but the existing concrete brick structure is relatively square, and when subjected to a large external force, the concrete bricks are easy to separate from each other, resulting in damage to the wall to a certain extent. To a certain extent, it affects the overall quality of the construction project and the popularization and application of concrete bricks, especially in some applications that need to bear the impact force in the lateral direction, it cannot meet the needs;

[0003] In addition, when it is necessary to place concrete bricks around the pipes, it is usually necessary to process a switch box on the concrete bricks that is compatible with the pipes and cables to place accommodating grooves or line pipes, so that the pipes and cables can be clamped. In order to avoid interference between the concrete brick body and pipes and cables, however, the existing concrete bricks are usually standard brick structures, which need to be slotted by manual cutting at the construction site, resulting in a large loss of bricks and generating a lot of dust and noise pollution , and the construction efficiency is not high, increasing labor costs and material costs;

[0004] Further, the current concrete bricks use a formula of pure cement plus river sand. Although this formula ensures the early strength of the concrete brick and the turnover rate of the formwork, the pure cement formula not only consumes a large amount of cement, but also due to the concentrated heat of the hydration peak , so in the case of a large amount of use, cracks are prone to appear, and the large-scale use of river sand increases the environmental pressure. The use of machine-made sand has become a certain trend. However, in the concrete components of the existing machine-made sand, due to the constraints of the machine-made sand mother , and other existing component distribution ratios are not sound enough, prone to large porosity, low mortar density, and insufficient durability and compression resistance

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