precast-tech

precast technology developments

Concrete mix ratio: far from a simple numerical proportion

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The concrete mix ratio is the core of concrete production and control, and many technical personnel have invested a lot of effort in research.

Many people have also summarized unique design methods based on their own experience.

However, there are also people who only know the table and mistakenly believe that the mix ratio is just a few simple combinations of numbers, trying to use a set of mix ratios to deal with all situations, only making slight adjustments during production, resulting in frequent problems.

In production, people often inquire about specific values such as cement dosage, mix ratio, sand ratio, etc.

for C30 concrete.

However, these questions are difficult to answer accurately when there is a lack of information on raw material details, construction sites, pouring methods, engineering characteristics, and environmental factors.

Randomly determining the mix ratio is no different from guessing blindly or based on experience.

Steel Chamfer

I believe that concrete mix proportions are not simply numerical stacking, but rather the process of various raw materials working together and complementing each other’s advantages to achieve the expected design goals.

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Research on viscosity reduction technology of C80 high-performance concrete

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With the development of modern building structures towards high-rise and large-span directions, C80 and above high-grade concrete has gradually become the core material for super high-rise buildings, large-span bridges, and marine engineering due to its excellent mechanical properties and durability.

However, the characteristics of high dosage of cementitious materials and low water cement ratio (usually ≤ 0.

30) lead to a significant increase in the viscosity of concrete, causing construction problems such as high pumping resistance, difficulty in compacting, and susceptibility to honeycomb and rough surfaces, which seriously restrict its engineering application effect.

Especially in complex structural construction, high viscosity concrete is prone to pipe blockage, delamination, and even affects structural homogeneity and long-term durability, becoming a bottleneck restricting the development of high-strength concrete technology.

Rebar Saddles

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I never expected that there would be such a big question about adding additives to concrete!

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Nowadays, it is difficult to improve the concrete strength of many mixing plants.

Rebar Bolsters

If you want to improve the strength of concrete, you are in a fierce market competition environment and face the dilemma of whether to increase costs and reduce profits.

Through in-depth investigation and analysis, it was found that most of these types of mixing plants have entered the misconception of using concrete admixtures, as follows.

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Discussion on the Truncation of Concrete Beam Bottom Reinforcement

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Architecture One (JZXSW2015) – a WeChat premium account subscribed by construction workers, telling the emotional journey of bricklayers and sharing the ups and downs of engineering workers.

Click on the blue text “Architecture One” under the title to follow, and we will provide you with valuable and content reading enjoyment.

Rebar Wheel Spacers

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Forum Report Sharing – Application Analysis of Precast Concrete Engineering Technology in China and Abroad (Li Weixing)

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On March 21st, the 15th Precast Concrete Technology Forum kicked off at the Xicheng Campus of Beijing Jianzhu University.

The theme of the conference is “Green, Low Carbon, New Chapter of Digital Intelligence Spectrum”, aiming to review the 15 year development history of the precast concrete industry and jointly explore the innovative path of precast concrete technology.

Spherical Head Anchor

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