precast-tech

In the current transition of urban construction towards high-altitude and green construction, high-strength concrete (HSC) has become the core material of super high-rise buildings due to its excellent mechanical properties.

However, the resource consumption and carbon emissions problems brought by traditional production modes are becoming increasingly prominent.

PVC Chamfer

How to achieve sustainable development of high-strength concrete through the substitution and performance optimization of recycled materials? The latest research provides an innovative answer that balances performance and environmental protection through the composite application of modified recycled concrete aggregates (MRCA) and metakaolin (MK), combined with machine learning quantitative analysis.

.

(Hello everyone, this is my personal WeChat official account, which is mainly to hope that colleagues can have an additional platform for academic discussion.

Ferrule Loop Insert

More articles are shared, please scan your code to follow! You are also welcome to contribute! Please forgive me for any interruptions!).

The winter temperature in the northwest region of China is relatively low, and winter construction in cold areas can have adverse effects on the various properties of concrete.

Long term exposure to cold environments can increase the porosity and decrease the compactness of concrete, making it loose and brittle, seriously affecting its mechanical and durability properties.

Adding antifreeze can effectively lower the freezing point of liquid phase water in the internal pores of concrete, allowing concrete to undergo hydration reactions well under low temperature conditions, thereby significantly improving the frost resistance of concrete.

Therefore, researching high-performance antifreeze agents to improve the mechanical and durability properties of concrete in cold regions is of great practical significance.

Metal Rebar Caps

.

The residual amount of the original coarse ash sieve is relatively large, containing a lot of impurities and a large loss on ignition, so the actual effect cannot be well reflected.

In view of this, the concrete made from it does not have ideal fluidity, and its water retention and cohesion do not meet the requirements, which will have a great impact on the quality of fresh concrete; Due to excessive water demand, the actual water consumption per unit volume of concrete may exceed the expected water consumption, resulting in an increase in water cement ratio, a decrease in compressive strength grade, and a serious weakening of the durability of hardened concrete.

Edge Lift Anchor

.

Concrete strength is the core safety indicator of building structures, and the precision of testing is of great significance for controlling engineering quality.

Rebound testing technology is easy to operate and non-destructive.

It is widely used in building engineering principles, mechanisms, practical operations, adaptation of different components, and error control.

Embedment Plate

Each link affects the reliability of testing results.

Exploring technical details, optimizing application strategies, analyzing and controlling errors can provide technical support for quality assessment of construction projects, and connect key theoretical and practical aspects.

.

At present, in the construction process of major construction projects in China, there are different factors that affect the production of concrete test blocks.

The key issues include the size and external shape of the test blocks not meeting the requirements, excessive use of waste engine oil in the isolation agent, and excess concrete materials, which need to be highly valued by relevant work units.

Magnetic Thread Disc

.

Are you afraid of freezing when pouring concrete in winter? The answer is affirmative.

Low temperature can cause water to freeze and expand in concrete, damaging its internal structure and reducing its strength and durability.

Steel Chamfer

At the same time, low temperature will slow down the hydration reaction of cement, and even stop the reaction, affecting the strength of concrete.

Do you know how to prevent concrete from freezing in low temperature environments?.

In the secondary pressing process, it is now common to manually press with a spatula, which not only has low efficiency but also lacks sufficient force.

Steel Rebar Chairs

When defects develop deeper from the surface to the inside, it will be difficult to eliminate them.

.

Wang Chunlin, Zeng Bin Research progress on precast prestressed concrete structures [J].

Cast in Loop

Journal of Building Structures, 2025, 46 (08): 79-96.

In the 2026 “Friends of Time” New Year’s Eve speech, Luo Zhenyu gave a refreshing definition: concrete is actually “fresh”.

Erection Anchor

.