precast-tech

A new construction project with a building area of 1500m2, consisting of two underground floors and five above ground floors, and a reinforced concrete frame structure.

There are 3 post tensioned prestressed concrete beams in the lobby on the first floor.

Plastic Nail Plate

After 25 days of pouring, the production manager judged based on experience that the concrete strength had reached the design requirements.

Immediately, the operators were arranged to remove the beam bottom formwork and prepare for prestressed tensioning.

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The ground of the industrial plant is made of wear-resistant concrete, and the surface layer is made of 160mm thick C30 reinforced concrete cast-in-place and wear-resistant epoxy self leveling layer.

Adopting the seamless construction technology of short distance stress release, that is, setting construction joints in the vertical direction on the concrete ground, dividing the ground into several blocks of a certain size with construction joints, pouring adjacent blocks at intervals (jumping pouring), and after the concrete is poured first and undergoes significant shrinkage deformation, it is connected and poured into a whole.

This seamless construction technology for short distance stress release is based on the non-linear relationship between temperature shrinkage stress and structural length, utilizing the large early temperature and shrinkage deformation of concrete.

The method of releasing stress in a short distance is adopted to cope with early large shrinkage.

Concrete Lifting Clutch

After the concrete passes the early large temperature and shrinkage, each block is poured and connected as a whole to cope with smaller shrinkage.

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Policy basis: The Notice of the Ministry of Finance and the State Administration of Taxation on the Application of Low Value Added Tax Rates and Simplified Methods for Collecting Value Added Tax on Some Goods (Caishui [2009] No.

Plastic Nail Plate

9) clearly stipulates that general taxpayers who sell self-produced commodity concrete (limited to cement concrete produced from cement as raw material) can choose to calculate and pay value-added tax at a simplified rate of 3%.

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Concrete segregation is essentially the phenomenon of the separation of various component materials under the action of gravity and external forces.

The seemingly subtle changes of coarse aggregate sinking, slurry floating, and water secretion may trigger a chain reaction that erodes the quality of the pier body from the inside out.

Plastic Rebar Chairs

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If you still hold such thoughts, then you may be laying hidden dangers for future building safety.

Pfeifer VS Box

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In concrete mix proportions, the water cement ratio is a core parameter that must be mastered.

Cast in Loop

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Concrete is almost ubiquitous in railway engineering.

Rebar Wheel Spacers

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On January 30th, in Macheng City, Hubei Province, a massive object resembling a ship completed its final pressure test in the factory area of Wugang Institute New Materials Company of China Communications Second Navigation Bureau.

This is a prestressed UHPC shell cast-in-place inner core ordinary concrete composite cover beam (also known as “Ningbo beam”) independently developed by the company’s technical team.

Its successful development means that multiple global challenges in bridge construction are expected to be solved.

Spherical Head Anchor

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On February 6th, the national cement market mainly fell, mainly concentrated in provinces such as Hunan, Sichuan, Hebei, and Shanxi.

Pfeifer VS Box

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With the continuous deepening of China’s energy-saving and low-carbon policies and the significant improvement of people’s quality of life, the energy consumption and carbon emissions in the construction industry are increasingly receiving high attention from the whole society.

As an important carrier of energy consumption, buildings’ energy conservation and emission reduction have become one of the key links in promoting the achievement of the national “dual carbon” goals.

The heat loss caused by building envelope structures (including roofs, exterior walls, doors and windows, floors, etc.

) is the main reason for the high energy consumption of buildings.

Cast in Loop

Therefore, improving the thermal performance of building envelope structures and developing efficient and energy-saving insulation systems have become one of the core topics in global building energy conservation research.

In this context, the research and application of high-performance building envelope insulation materials is regarded as an important technological path to achieve building energy efficiency goals.

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