Construction Precast Development
Precast News From China
precast technology developments
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Strictly follow the “Concrete Mix Proportion Notice” and input the concrete mix proportion into the batching system of the mixer.
In order to prevent errors, this job usually requires two people to operate, one of whom is responsible for inputting the concrete mix proportion into the computer, and the other is responsible for verifying and confirming, and making records of the input of the concrete mix proportion.
Strictly verify the variety, specifications, and quantity of raw materials to ensure that the quality of various raw materials used in concrete meets the requirements of relevant standards and the provisions of the “Concrete Mix Proportion Notice”.
Special attention should be paid to the numbering of the raw material silos, the types of raw materials inside the silos, and the discharge gates (valves).
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The core of this exam focuses on the classification and applicability of mixing machines, the scale division of mixing systems, and the formula for calculating production capacity.
Computational exam points are prone to appear in case questions and require memorization of formulas and parameters.
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The construction of concrete dams using dry lean concrete is a new technology in concrete dam construction.
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Concrete is the flesh and blood of construction engineering, and mixing is the first key process that determines the performance of concrete.
Many engineering quality issues are rooted in the mixing process.
Today we will start from the importance and influencing factors of mixing, and talk about the core points of concrete forming.
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After the beginning of the year, price information will be closely announced in accordance with the pace of resuming production.
(The price of wet mortar on this platform will be updated a few days later for February 2026.
Please keep an eye on it closely.
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Concrete is mainly composed of cement, mixed with several powdered mineral admixtures, water, and additives to form a binder slurry.
Scattered sand and stone are evenly mixed and poured into various models such as beams, columns, and slabs, firmly bonded into a whole engineering material.
In the process of preparing and producing concrete, in addition to requiring the uniformity of the cement-based binder slurry itself, it is also required to separate each sand and stone particle with the slurry through mixing, and then use construction techniques such as vibration to achieve the closest accumulation of sand and stone, and firmly bond them together with the binder.
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In cold northern regions and extreme climate conditions such as high altitude and high latitude, winter concrete construction faces the problem of the impact of low temperature environment on the development of concrete strength, durability, and structural safety.
Low temperature can significantly reduce the hydration reaction rate of concrete, slow the early strength growth, and even cause freezing damage, seriously affecting the engineering quality and service life.
With the continuous advancement of infrastructure construction, the demand for winter construction is increasing day by day.
How to ensure that concrete performance meets standards and ensure engineering safety in low-temperature environments has become a key issue that urgently needs to be solved in the field of civil engineering.
Therefore, in-depth exploration of the innovative application of insulation and curing technology for winter concrete construction is of great significance for the technological progress of the industry.
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(1) Most cities now prohibit on-site mixing.
Gradually extending to county towns and rural areas.
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