Construction Precast Development

Tang Kaijing and others studied basalt mechanism sand, river sand, and quartz mechanism sand, and found that different rock types of mechanism sand have a significant impact on the workability of C50 concrete.

Swift Lift Clutches

Differences in morphology and gradation are the reasons for the decrease in workability.

Donza et al.

conducted a comparative study on the workability of limestone, granite, dolomite mechanism sand, and natural sand concrete, and found that the chemical mineral composition, rock type, bulk density, and internal structure of the mechanism sand parent rock are the main factors affecting the performance of mechanism sand.

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The climate characteristics of autumn show significant changes in temperature, humidity, and wind speed (daily average temperature of 5-20 ℃, temperature difference between day and night of 8-15 ℃, relative humidity of 40% -80%), which directly affects the concrete from mixing, pouring, curing to hardening and forming.

According to the “Winter Construction Regulations for Building Engineering” (JGJ/T104-2011), concrete quality problems caused by climate factors in autumn account for more than 35% of the total annual amount, with particularly prominent issues such as cracks, insufficient strength, and surface defects.

Swift Lift Void Former

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Phenomenon: Cracks that settle due to bleeding or shrinkage of concrete within 1-3 hours after pouring.

The settlement crack cracks along the direction of the main reinforcement on the surface of the beam and slab, and the crack extends as deep as the surface of the reinforcement.

Plastic shrinkage cracks produce irregular diagonal cracks above the steel bars.

Fixing Socket

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In the field of engineering construction, concrete is the main load-bearing material, and its strength grade is directly related to structural safety and service life.

Coil Loop Insert

According to the “Code for Design of Concrete Structures” (GB/T50010-2010), different engineering parts have strict requirements for concrete strength.

For ordinary homebuyers, when they discover quality problems such as cracks and component deformation in their houses, they can learn about the strength of the concrete through the following methods.

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The climate characteristics of autumn are distinct, with large temperature differences between day and night, frequent fluctuations in air humidity (some areas are rainy in the early stage and dry in the later stage), and gradually decreasing temperatures.

These factors will have a significant impact on the mixing, transportation, pouring, and curing of concrete, which can easily cause problems such as cracks, slow strength growth, and decreased structural durability.

Concrete Lifting Clutch

Therefore, in autumn concrete construction, it is necessary to focus on the four core points of “temperature control, moisture retention, crack prevention, and strength promotion”, and pay special attention to the following precautions:.

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Steel Rebar Chairs

At the same time, we also found an organization that can provide free Q&A, where everyone can gather together to warm up and weather the economic winter.

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Are newly hired construction workers and document clerks confused about concrete test blocks? This article uses the most straightforward language to quickly grasp the core purpose, basic process, and key quantities of concrete sampling, allowing you to quickly get rid of the label of “novice”.

Concrete Plate Anchors

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In today’s rapidly developing urbanization, skyscrapers are rising from the ground, cross sea bridges are winding and magnificent, and highways are crisscrossing.

We are amazed by the grandeur of these magnificent projects, but rarely pay attention to their most fundamental component – concrete.

Shuttering Magnet

It may seem plain and unadorned, but in reality, it hides the universe.

Modern concrete is no longer simply a mixture of cement, sand, and stone.

Every leap in its performance is inseparable from the empowerment of a key material: concrete admixtures.

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It is crucial to develop specialized mix proportion adjustment plans and production precautions for concrete construction in autumn and winter, especially under low temperature, strong wind, and dry conditions.

Crown Foot Anchor

This can effectively prevent a series of problems such as concrete freezing damage, slow strength growth, cracking, etc.

, ensuring the quality and progress of the project.

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The annual investment plan of 406.

Rebar Saddles

9 billion yuan in Xinjiang is bringing unprecedented opportunities and changes to the fields of concrete and engineering machinery.

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