Construction Precast Development

The widespread use of concrete chemical additives and mineral admixtures has supported the rapid development of modern concrete production and construction technology.

In the past 20 years, various new types of concrete such as high flow concrete, high-strength and high-performance concrete above C80, self compacting vibration free concrete, fiber reinforced concrete, underwater non dispersing concrete and other special concrete have been successfully developed and applied in many engineering constructions.

Lifting Anchor

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Can core sampling be used for correction or strength measurement when the thickness of concrete components is less than 70? The article describes the method of using small aspect ratio core samples to test the compressive strength of thin-walled concrete components.

This method is a local standard and has recently been abolished.

Cast in Loop

So, what method should be used to test the compressive strength of concrete for thin-walled plate components?.

The phenomenon of cement concrete pavement being frozen usually occurs on roads with average frost resistance and poor frost resistance.

Once these roads encounter sudden cooling, snowfall, and freezing weather, they are prone to frost damage on the road surface.

Magnetic Thread Disc

But if we take effective anti freezing maintenance measures for these road surfaces with poor anti freezing ability in a timely manner, it can effectively improve the anti freezing ability of the road surface.

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Concrete is the backbone of global infrastructure, but its traditional formula is no longer able to meet modern engineering needs in terms of durability, sustainability, and adaptability.

Lifting Socket

According to statistics, the construction industry contributes about 38% of global carbon dioxide emissions, with cement production accounting for 8%.

In this context, new concrete materials such as high-performance concrete (HPC), ultra-high performance concrete (UHPC), self compacting concrete (SCC), fiber-reinforced concrete (FRC), geopolymer concrete (GPC), and 3D printed concrete have emerged.

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Due to the gradual depletion of river sand resources and the obvious cost advantage of mechanism sand, the application of mechanism sand in high-speed rail, highway and other projects is becoming increasingly widespread.

Edge Lift Anchor

Mechanized sand is made by crushing rocks through sand making machines and related equipment, usually containing a certain amount of clay.

In the industry, the methylene blue value (MB value) is commonly used to evaluate the clay content in sand.

Higher MB values often have adverse effects on the workability of concrete, not only damaging the internal bonding performance of concrete, but also leading to an increase in water or admixture usage.

To reduce the MB value, water washing treatment is often used, but this method can easily lead to water resource waste and environmental issues.

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Drilled pile is widely used in foundation engineering in coastal areas.

Due to its concealed construction process, it is difficult to visually monitor the entire construction process.

Various quality problems are prone to occur during the concrete construction of drilled pile, such as steel cage floating, rapid concrete setting, segregation, and pile breakage.

Elephant Foot Ferrule

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With the development of human civilization and engineering construction technology, concrete, as the most important material in construction projects, is experiencing a significant increase in production.

Steel Rebar Chairs

The carbon emissions generated by the construction industry account for 8% of the total global carbon emissions, so the construction industry must be committed to sustainable development and vigorously develop low-carbon construction technology innovation.

At present, the demand for low-carbon building materials is increasing day by day, and low-carbon concrete has become a popular term in the industry.

How to reduce the carbon emissions of concrete production through technological means is the main problem currently faced.

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As a key component of modern transportation systems, highways have increasingly strict requirements for construction quality, especially in key structures such as bridges and pavements.

Swift Lift Clutches

The performance of concrete materials directly affects the safety and stability of the project.

Traditional concrete is prone to cracking, peeling, and other problems when exposed to harsh environments, thereby reducing the service life of the structure.

With high-performance concrete gradually becoming a research hotspot, this material has become an ideal choice for dealing with complex environments due to its high compressive strength, good durability, and low permeability.

However, optimizing the mix proportion of high-performance concrete, selecting suitable raw materials, and controlling the construction process remain the core challenges in improving its performance.

Nevertheless, the academic and engineering communities have conducted extensive research and proposed many effective optimization design methods and improved construction techniques.

However, in practical applications, high-performance concrete still faces technical challenges, especially in material selection and cost control.

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Elephant Foot Ferrule

Calculation formula for strip foundation concrete cushion layer.

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Rebar Bolsters

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3 Temperature measurement during concrete curing shall comply with the following regulations:.