precast-tech

Customers who come to consult about concrete mixing plants often ask about the price of the mixing plant first: how much does the equipment cost for one time, which is a very detailed calculation; But after the station is built, many people have not calculated how much it will cost to operate for a year.

Erection Anchor

After production, it is most likely to suffer losses in two things: lack of confidence in concrete pricing and tight cash flow.

This article calculates the three major sub items of electricity, labor, and maintenance, providing a reference for customers who are preparing to build or have already built a website.

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The life cycle assessment of recycled concrete usually adopts a system boundary from cradle to gate, covering raw material production, transportation, and concrete preparation.

The mix design determines the amount of cement, natural aggregates, recycled aggregates, and water used, as well as transportation demand and preparation energy consumption.

Rebar Wheel Spacers

If we only compare whether to use recycled aggregates at the end, it is easy to overlook the environmental rebound caused by cement increment.

Moving the life cycle assessment to the mix design stage can achieve synergistic optimization of carbon footprint and mechanical properties, making it a suitable multi-objective design case for green building materials courses in universities.

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Cement production consumes a large amount of energy and emits CO ₂, which restricts the green development of the construction industry.

GGBS and FA, as industrial solid waste, can partially replace cement to achieve low carbonization.

However, the synergistic effect of a single mixed system in terms of mechanical and environmental benefits is not yet clear.

Precast Round Ferrule

It is necessary to systematically study the strength development law and environmental impact of binary mixed systems, and provide scientific basis for the application of low-carbon concrete engineering.

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According to the requirements of the “Notice on Collecting Product Information for the Recommended Catalogue of Digital Products in the Concrete Industry (2026 Edition)” (Zhongzhi Xiezi [226] No.

48) issued by the China Concrete and Cement Products Association, 47 products, equipment, and technical services declared by 24 enterprises were included in the catalogue through voluntary application by enterprises and collection of industry product information.

The specific content is detailed in the attachment.

Crown Foot Anchor

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The author of this article is Wang Huaibei, published in “Construction Workers”.

Lifting Anchor

During the construction process, there are safety hazards in the foundation engineering as long as it is not backfilled for a day.

Both the construction unit and the supervision unit hope to complete the foundation engineering construction as soon as possible.

But we have found that many construction units start pouring concrete without completely draining the accumulated water in the foundation pit, especially when there is a concrete structure under the column pier.

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Internal force redistribution is a fundamental concept in the analysis of the bearing capacity of statically indeterminate concrete structures, while moment modulation is its engineering application form.

Steel Chamfer

The question is: To what extent do cracks in concrete structures develop and can it be considered that internal force redistribution has occurred in the structure?.

T/CECS 640-2019 “Technical Specification for Jumping Method of Ultra long and Large Volume Concrete Structures” is the only specialized association standard for seamless construction of ultra long underground concrete structures in China.

It was released in November 2019 and implemented on April 1, 2020.

It is edited by the Beijing Institute of Building Engineering and is specifically designed to address the pain points of the traditional post pouring strip construction period, multiple leakage hazards, and difficult interface treatment in the industry.

Swift Lift Clutches

It systematically standardizes the technical requirements for the design, materials, construction, and temperature control monitoring of the jumping method for ultra long and large volume concrete structures in underground.

It is widely applicable to ultra long and large volume concrete structures such as basement floors, exterior walls, and floor slabs in industrial and civil buildings, and is the legal technical basis for eliminating post pouring strips and achieving seamless construction of structures.

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Mechanized sand is gradually replacing natural sand in engineering construction due to its abundant resource reserves, but its production process is prone to producing excessive mud powder, which has a negative impact on the mechanical properties of concrete.

Existing research has mostly focused on the optimization of curing for low clay content mechanism sand concrete.

Fixing Socket

However, there is still a lack of research on the long-term strength development of concrete under different curing systems for high clay content conditions, and the coupling mechanism between curing methods and clay powder deterioration effects is not yet clear.

The curing conditions directly determine the hydration process of cement and the compactness of the internal structure, which is an important way to improve the performance of high clay content mechanism sand concrete.

This article systematically analyzes the influence of curing methods on the strength of concrete at different ages by setting up multiple sets of curing control experiments, revealing the internal mechanism of action, in order to provide theoretical basis for the selection of curing schemes and performance control of high clay content mechanism sand concrete engineering.

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The acceptance of concrete strength is based on the evaluation of the strength of standard curing and specimens cured under the same conditions.

According to GB/T50344-2019, when there are insufficient inspection quantities, missing inspection data, doubts or disputes about construction quality in the project, a qualified third-party testing agency should be commissioned to carry out structural entity quality testing.

Magnetic Thread Disc

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As the most widely used building material in modern civil engineering, the shrinkage characteristics of concrete have always been a core issue of concern in academia and engineering.

Pfeifer VS Box

Concrete shrinkage refers to the phenomenon of volume reduction caused by physical and chemical reactions during the hardening process.

If the deformation is not effectively controlled, it is highly likely to cause structural cracking, which seriously threatens the durability and safety of the project.

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