Construction Precast Development

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Swift Lift Foot Anchor

Construction slump requirement: 180mm~220mm;.

The blindness of construction, the asynchronous construction of the same individual project, and the large time difference in the formation of concrete structures in different parts have caused uneven settlement of the overall project and the formation of cracks.

Swift Lift Clutches

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The phenomenon of partial mixing water floating to the surface of concrete during the setting process, accompanied by the sinking of granular materials, after pouring and vibrating the concrete mixture, is called bleeding.

A small amount of bleeding on the surface of concrete is a normal phenomenon and has no effect on the properties of the concrete mixture and after hardening.

However, excessive bleeding can bring many adverse consequences.

Metal Rebar Caps

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It is reported that the lifting project of precast concrete columns for the 1 # three-dimensional warehouse undertaken this time has opened up a new field for the lifting of large warehouse concrete columns, breaking the weight record for lifting.

This hoisting of precast columns is different from the previous hoisting.

The traditional towers are mostly steel cylindrical structures, with uniform materials, concentrated center of gravity and regular shape; The precast concrete columns lifted this time have a large single weight (average weight of about 192 tons per column) and a long length (up to 40.

6 meters), which belong to brittle material components.

PVC Chamfer

The surface is easily damaged and the internal stress is uneven.

In addition, the precision requirements for the reserved lifting points of the columns are extremely high.

Once the stress deviation occurs, it is easy to cause cracking, and the requirements for lifting stability and synchronization far exceed those of the tower.

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Steel Rebar Chairs

If it involves copyright issues, please contact us to delete it.

The content of the article shared represents the personal views of the original author, and is only for readers’ reference, not the views of this official account.

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The main processes include: measurement and setting out, steel bar correction, hoisting of the next floor staircase, construction of vertical precast components, sealing construction, grouting construction, binding of internal shear wall steel bars, installation of internal wall formwork, binding of external wall connection node steel bars, installation of external wall formwork, installation or lifting of protective frames, installation of horizontal formwork and supports, hoisting of horizontal composite (beam) slabs, hoisting of balconies and air conditioning panels, installation of water and electricity pipelines, binding of horizontal steel bars, and concrete pouring.

The key construction processes of precast shear wall structures include: surveying and setting out, vertical precast component construction, sealing construction, grouting construction, installation of exterior wall formwork, installation of horizontal formwork and supports, lifting of horizontal composite (beam) slabs, binding of horizontal steel bars, and pouring of concrete.

The construction plan for the precast standard layer is detailed in Attachment 1.

The specific project schedule and process arrangement need to be adjusted based on the type and quantity of precast components.

Spread Anchor

The logical relationship between the 17 main sub processes is as follows:.

Float slurry is the result of mortar floating and coarse aggregate significantly sinking during the pouring process of concrete, leading to segregation and often accompanied by bleeding.

The presence of float slurry can to some extent reduce the surface strength, appearance quality, and durability of concrete, which urgently needs attention and attention in engineering.

Shuttering Magnet

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The author created this official account to share the collected specifications with everyone.

Swift Lift Void Former

In order to facilitate everyone to find the resources they want more quickly in their daily study and work, all materials are for learning purposes only, not for commercial purposes.

If there is any infringement issue, please contact me for deletion.

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A certain project is a construction general contracting project, with B1 and B2 towers on the 27th to 30th floors.

The design adopts a cantilevered cast-in-place concrete structure belt, with a maximum cantilever length of 6m.

Lifting Anchor

There are also 20 standard floors above it.

Due to the fact that the cantilever concrete structure must be constructed together with the corresponding floor cast-in-place structure, the climbing frame needs to stop climbing when the structure is constructed to this point.

The cantilever frame is erected at high altitude for the structural construction of the cantilever part.

After the construction is completed, a second assembly and installation of the climbing frame are required for the upper structure construction.

The process is complex and has a great impact on the construction period.

Moreover, the installation and dismantling of the formwork system at high altitude is difficult and poses extremely high safety risks.

The construction period and labor costs are high.

Therefore, based on factors such as project duration, safety, and cost, changes must be implemented.

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The “2025 Development Report on China’s Concrete and Cement Products Industry (White Paper)” has been compiled and printed.

This report is led by the China Concrete and Cement Products Association, jointly compiled by nearly 20 association branches and key leading enterprises.

Ferrule Loop Insert

It is the first systematic white paper in China’s concrete and cement products industry that focuses on the entire industry chain.

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