High-strength hollow building block of concrete and its production and application methods

Abstract

A high-strength hollow building block of concrete has the centered holes which have lower cylindrical shape and top ring with arc, 2 tongue grooves at both sides of end, two inward inclined side surfaces on its top and a central slot on its top surface. It can be used to build wall. Its advantages is the tongue-groove link between adjacent building blocks to improve the strength and anti-seismic power by 3-5 times with lower cost.

Description

1. Technical field [0001] The invention relates to the technical field of building materials, in particular to a concrete block for building. The invention also relates to the production and construction method of the concrete block. 2. Background technology [0002] Statistics show that at present, more than 84% of the wall materials in my country still use solid clay bricks, with an annual output of about 600 billion standard bricks, a yearly consumption of 1.2 million mu of cultivated land, and a consumption of 60 million tons of standard coal, which seriously damages the ecological environment. . Moreover, the solid clay brick wall has poor earthquake resistance, single architectural shape, and low thermal insulation performance. The country has expressly banned its use for a limited time. With the development trend of the world's building materials industry, it has become an inevitable trend to replace solid clay bricks with concrete blocks. [0003] For a long time, ...

AI Technical Summary

Problems solved by technology

[0004] First, the block structure is unreasonable, without considering the construction operation and mechanical properties

1. It is difficult to hang grout on the flat end, resulting in the head seam mortar is not full, and the head seam shear resistance is very low

2. Straight round square holes reduce the strength

Existing masonry is based on the excessive pursuit of large hollow ratio, the holes are straight holes, and the remaining cross-sectional area is small, which reduces the strength of the wall, especially the thin-walled concrete block, which makes the mechanical strength of the wall The performance index dropped significantly

3. The hole is not aligned

[0005] Second, the strength of the block is low, the manufacturing method of the block is backward, the machinery and tools are simple, the concrete assembly is not standardized, and the strength label is too discrete. Material monitoring and optimization of raw materials used

[0006] Third, during the construction, the concrete filling holes of the joints are often not dense, the overlapping of the steel bars in the sockets, the connecting bars are not firm, or the length is not enough, and the mortar joints in the masonry are not full and the mortar is serious.

[0007] Fourth, there is a lack of systematic and comprehensive research. In terms of design, the concepts, theories and methods of clay bricks are still used in the past, which are not in line with the actual mechanical characteristics of block walls, and the anti-seismic measures of blocks are not complete.

[0008] The above deficiencies lead to low strength of the block wall, qualitative changes, cracks, sinking, and even damage are common in block buildings, as well as problems such as rain leakage, lack of heat insulation, and lack of heat preservation.

In particular, the seismic performance of block buildings is poor, which seriously restricts the development of concrete blocks, and is a technical problem that has not been satisfactorily resolved for a long time.

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