precast-tech

A certain project is located in the severe cold zone of northwest China.

Due to the special nature of the project, tight schedule, and heavy workload, it needs to be constructed all year round, and a large amount of concrete pouring operations need to be carried out normally in winter.

Currently, research on concrete construction in cold regions both domestically and internationally is mostly focused on raw materials, mix proportions, and insulation, temperature measurement, and curing, with relatively little research on other aspects of the entire construction process.

However, this project has strict requirements for the performance of concrete, and the raw materials and mix proportions cannot be changed arbitrarily.

It also needs to have frost resistance and durability.

Conventional winter construction measures are difficult to meet the needs, so special research is needed.

Swift Lift Clutches

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① The raw material testing is qualified, and the machinery and equipment meet the construction requirements.

Precast Round Ferrule

② Clean the sprayed surface and set control concrete thickness standards every 2 meters.

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As temperatures continue to drop, many areas in northern China have entered the winter construction phase.

For construction projects, winter concrete construction is an unavoidable challenge.

Halfen Channel

Low temperature environment not only directly affects the setting and hardening of concrete, but also may lead to a decrease in its strength, durability, and even serious quality accidents.

Therefore, as the “guardian angel” of engineering quality, supervisors must firmly grasp the key points of winter construction control to prevent problems before they occur.

This article will systematically sort out the core of supervision and control for concrete winter construction, helping you ensure a smooth winter for your project.

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Large volume concrete, due to its large cross-sectional size and concentrated release of hydration heat, is prone to cracking caused by temperature stress, directly affecting structural strength and durability.

Halfen Channel

Based on the “Construction Standard for Large Volume Concrete” (GB 50496) and practical engineering experience, the core requirements for material selection, mix design, construction technology, and maintenance control are now improved as follows to ensure construction quality.

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During the concrete construction of water conservancy projects, quality problems such as honeycombing, cracks, unevenness, local detachment, and exposed reinforcement often occur on the surface of the concrete, posing a huge threat and hidden danger to the overall quality and safety of the project.

Rebar Wheel Spacers

And the existence of these problems is often due to the influence of various uncertain factors in the actual production and construction application process.

By effectively applying concrete testing technology, the problems and defects can be discovered in the first time, which is beneficial for relevant personnel to discover and take effective measures to prevent and solve them in a timely manner.

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The internal exchange journal materials on local engineering cost, judicial appraisal, engineering law, and engineering audit in Yunnan Province are mainly written by technical personnel with many years of frontline work experience.

They are all summaries of practical work experience, and most of the attached cases are actual engineering cases that have occurred locally, which have good reference value.

Please contact me if you need to subscribe or participate.

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We warmly welcome you.

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Beijing Fengzhu Engineering Technology Research Institute Co.

, Ltd.

(hereinafter referred to as “Fengzhu Research Institute”) was established in 2017 and is a technology enterprise specializing in research and practice of civil engineering and earthquake prevention and disaster reduction technology.

Precast Lifting Clutch

The core team of Fengzhu Research Institute is led by Comrade Yao Panfeng, with members possessing rich engineering practice experience and research foundation.

They have participated in the construction of major projects such as Tianjin 117 Building and China Zun (Director of Structural Design), creating comprehensive benefits of over 800 million yuan and leading the world in some fields, with 6 world or domestic records.

As of 2025, the company (including Comrade Yao Panfeng’s patent) has obtained over a hundred patent authorizations, including more than 40 invention patents.

Fengzhu Research Institute has established cooperative relationships with several top domestic research, design, and construction units, and has strong influence in this field (see Introduction of Beijing Fengzhu Engineering Technology Research Institute Co.

, Ltd.

).

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(2) Test personnel should strictly comply with national, industry, and local testing standards, as well as relevant specifications, regulations, technical documents, etc.

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The study prepared HC samples with different mix ratios (1:3:6, 1:2:4, 1:1.

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5:3), water cement ratios (0.

4-0.

6), and CRM substitution rates (0%, 15%, 25%) using 162 cylindrical specimens (diameter 150mm, height 300mm).

Horizontal and vertical cutting surface images were collected, and statistical features were extracted to train SVM, BRE, and GPR models.

The overall process is shown in Figure 1.

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More and more people are building houses in rural areas, and with them, there are not too many knowledgeable people.

So the problem is, how can those who don’t understand learn? As we all know, concrete is the most common building material.

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However, in rural housing construction, due to the relatively small amount of construction, most of it is self mixed concrete, which can be mixed as much as needed and used on-site without waste.

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