Research on the Risk Assessment of Cracking in Large Volume Concrete

The current cracking risk assessment mainly relies on the coupled simulation technology of temperature field and stress field.

Li Fazhang et al.

used MIDASFEA software to simulate the temperature spatiotemporal distribution of the bottom plate of Xijin Ship Lock under different molding temperatures and layer thicknesses.

Combined with the constrained stress model, they quantified the cracking risk and proved that reducing the molding temperature (better than adjusting the layer thickness) is the key to controlling cracks.

Liu Yi and others proposed intelligent monitoring technology, which constructs a predictive model by collecting real-time temperature data to achieve dynamic warning and regulation.

After comparing traditional models, Tong Liyong and others developed a new prediction model with stable error (<0.

15), providing a new tool for quality supervision of large volume concrete.

Double Ended Ferrule

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Tunnel Process Standardization Series 10 | Multi functional Bench Curing Process for Tunnel Lining Concrete

The multifunctional platform for tunnel lining concrete curing can simultaneously take into account concrete curing, concrete testing and repair, and cleaning and maintenance of embedded parts.

Plastic Rebar Chairs

The use of its automatic sprinkler system for curing concrete, as well as the use of a platform for inspection and repair of concrete, cleaning and maintenance of embedded parts, has the characteristics of strong applicability, easy operation, high efficiency, good curing effect, high safety, and reduced labor.

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Optimization of the overall representation method for the construction plan of reinforced concrete structures

Colleagues who have worked on renovation and reinforcement projects should have seen early concrete structure construction drawings, where detailed drawings of each beam were required, resulting in extremely low work efficiency.

Nowadays, concrete structure construction drawings adopt the architectural structure construction drawing plane integral representation method (referred to as “plane method”).

The expression form of plane method is to directly express the dimensions and reinforcement information of structural components in the structural layout plan of various components according to the drawing rules of plane integral representation method, and then combine with standard structural detailed drawings to form a complete set of structural design and construction drawings, which greatly improves work efficiency.

Shuttering Magnet

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【 Suggested Collection 】 Concrete always cracks, it turns out that these are the reasons for it!

Concrete will produce load cracks when subjected to conventional static loads, dynamic loads, and secondary stresses, which mainly include direct stress cracks and secondary stress cracks.

Direct stress cracks are caused by stress generated directly by external loads, while secondary stress cracks are caused by secondary stress indirectly caused by external loads.

Spread Anchor

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Analysis of Quality Control Points for Large Area Fine Stone Concrete Floor

The acceleration of industrialization has promoted the vigorous development of large-scale construction projects.

As an important carrier of building functions, the construction quality of large-area fine aggregate concrete flooring directly affects the overall performance and service life of buildings.

High quality fine aggregate concrete flooring can not only meet the load-bearing needs of industrial plants, logistics warehouses, and other places, but also effectively reduce maintenance costs in the later stage.

However, there are still many technical difficulties in the construction of large-scale fine aggregate concrete flooring, and it is urgent to establish a sound quality control system to ensure that the project quality meets the standards.

Embedment Plate

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Causes and control methods of early cracks in commercial concrete beams and slabs

The reasons for early cracking of commercial concrete are multifaceted.

Compared with ordinary on-site mixed concrete, commercial concrete has more early cracking and develops rapidly.

Ferrule Loop Insert

This is contrary to the development of modern commodity concrete.

Therefore, based on the characteristics of commercial concrete, we explore the causes of early cracking in commercial concrete, in order to better and effectively control the early cracking of concrete and improve its durability, reduce the maintenance of reinforced concrete structures, and have a significant impact on the sustainable development of national infrastructure.

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Factors affecting the durability of concrete and corresponding measures

Concrete is a general term for engineering composite materials that use cementitious materials to bond aggregates into a whole.

Swift Lift Void Former

It is mainly composed of cementitious materials, water, sand, and stone mixed in appropriate proportions.

Different amounts of admixtures and additives are added according to the environment, usage conditions, and concrete performance requirements of the project.

After mixing, pouring, vibration molding, curing, and other processes, it solidifies and hardens for a certain period of time to form artificial stone with strength.

The durability of concrete is influenced by various factors.

This article discusses the sub project of concrete in the basement of a tower in a certain industrial park in Longhua District, Shenzhen.

The project covers an area of 200000 square meters and includes production plants, canteens, laboratory buildings, energy buildings, auxiliary buildings, underground parking garages, etc.

Based on the characteristics of the project, analyze the factors affecting the durability of concrete from four aspects: raw material selection, environmental factors, curing conditions, and construction technology, and propose corresponding measures.

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C800 concrete: the strongest compressive concrete in the world, and currently known how strong the strongest concrete is

The strength grade of concrete directly determines the building’s bearing capacity, safety, and applicable scenarios.

C800 grade concrete is currently known to have the strongest compressive performance in the world in the laboratory.

Precast Round Ferrule

Its performance breaks through conventional knowledge and is the forefront benchmark of concrete material technology.

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