Reinforced Concrete Protective Layer Block

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Product Description:

Concrete block and reinforced protective layer block, is in the masonry structure and frame structure, under the beam, to expand the confined area, reinforced position, to prevent corrosion of steel exposed and the function.

Is a solution to the often used local pressure. 

Reinforced concrete cover thickness is related to the bearing capacity and durability of the structure, the function such as fire prevention. Has the following role and influence of reinforced concrete guard-layer:

1, maintenance structure durability of concrete protective layer is too thin to penetrate in the wet gas and water, too thick, easy to produce cracks, these could make the steel corrosion and inflation, so that the destruction of a concrete influence use and security of structure.

2, under external force Protection layer for steel bar anchoring force, takes advantage of the anchoring force between concrete and reinforcing steel bar, the two together, jointly participate in the work. Protective layer too thin or missing, reduce its anchorage force which reduces the structure to withstand the axial force and bending moment.

3, from the calculation formula of flexural bearing capacity of normal section

M a l or less FCBX (h0 x / 2) + fy 'AS' (ho - a s') a (sigma pO 'a fpy) a p' (ho - a p '), you can see that when the gluten protective layer through the thick section effectively reduced height h0, will reduce the cross section flexural bearing capacity. Visible protective layer thickness is how important factor affecting bearing capacity of structure.

4, fire protection layer of concrete has a certain thermal insulation effect, can more easily to soften when you encounter fire reinforced protection, if too thin, protective layer thickness under the environment of high temperature easy craze, cause reinforced in overheating and reduce the strength to destroy the whole structure. Hunan hengyang in 2003 a project is due to the high temperature heat from the burning of fire to soften steel lead to collapse and cause heavy casualties accident.

In the quality inspection of the current work, therefore, more attention paid to the protection layer thickness control, new rules to entities in the process of acceptance testing.


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Q:What are the three categories of civil engineering materials classified according to the basic composition?
According to the quality of points can be divided into A class, B class, C class.
Q:Civil engineering materials, what kind of
Generally classify the various classification methods by appropriate combination of materials after the division. Such as decorative mortar, asphalt waterproof material.
Q:Questions about civil engineering materials
First, with excellent adhesion, construction, anti-droop, so that the formation of waterproof between the continuum; second, with good flexibility, can withstand structural parts due to temperature, humidity, wind, earthquake And so on caused by the seam deformation; Third, with weather resistance, water resistance, long-term outdoor sunshine, rain, snow and summer heat and other conditions under the effect of maintaining long-term adhesion and tensile compression performance.
Q:I am now reading materials science and engineering,then you can report civil engineering professional?
It can be. But it is best to choose the relevant direction of civil engineering materials.
Q:What are the requirements for civil engineering materials?
See if you are studying or working at the site
Q:What are the four major mechanics in civil engineering?
Theoretical mechanics, material mechanics, soil mechanics, structural mechanics
Q:Non-architectural professional, how can apply for a construction division?
Obtain engineering or engineering economics undergraduate degree, work for 4 years, which engaged in construction project construction management work for 3 years. , To obtain engineering or engineering economics double bachelor's degree or graduate class graduation, work for 3 years, which engaged in construction project construction management work for 2 years.
Q:The Relationship between Material Development and Civil Development
The material is too important for civil engineering. Many need this knowledge
Q:What are the basic principles of civil material selection?
Security: There is no doubt that in the specified period of time, there is a certain quality assurance
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To pay more attention to their school, you can go to see the school graduate network, or the school Post it, where it should be more convenient to get what you want!

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