Month: November 2025

Recently, I have participated in multiple concrete quality litigation cases, among which the liability boundary between ready mixed concrete and solid concrete has always been a controversial focus.

Crown Foot Anchor

With the implementation of a series of mandatory engineering construction standards such as the General Code for Concrete Structures (GB 55008), the division of responsibilities has gained clearer technical basis and legal support.

This article will systematically analyze the principles of defining the entire process of concrete quality responsibility from design, production to construction and acceptance from the perspective of integrating multiple relevant standards, and propose practical and feasible risk prevention strategies.

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Introduction: For concrete structures, the presence of cracks is a very common phenomenon.

But some may cause a decrease in structural load-bearing capacity and reliability; Some may not have a significant impact on the bearing capacity, but they may cause issues such as detachment of concrete protective layer and accelerated corrosion of steel bars, which can reduce the durability of the structure and pose a greater risk to its safety.

Therefore, how to evaluate, identify, and repair cracks in concrete structures is of great significance for the use and maintenance of the structure.

Spherical Head Anchor

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Magnetic Thread Disc

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On October 31st, the National Concrete Price Index (CEMPI) closed at 91.

04 points, a month on month decrease of 0.

01% and a year-on-year decrease of 18.

Swift Lift Void Former

8%.

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Abstract: Using high-quality fly ash as the key raw material to prepare concrete, this paper discusses and analyzes the preparation of concrete and its influence on the dosage and water consumption of water reducing agents per cubic meter of concrete, reducing the amount of additives and water consumption, and improving the strength of concrete.

Swift Lift Foot Anchor

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Concrete admixture compounding technology refers to the production technology of scientifically formulating a multifunctional and high-performance composite admixture by physically mixing two or more single functional admixture components (such as different types of water reducing, retarding, air entraining, and slump retaining components) with a carrier (usually water) according to the specific requirements of the project for concrete performance.

Edge Lift Anchor

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The interface characteristics between the surface layer and the base layer in airport cement concrete pavement structures are one of the key factors determining the stress state and long-term durability of pavement panels.

Although some projects use asphalt isolation layers to achieve functions such as waterproofing, isolation, and stress buffering, practice has shown that such structures often cause diseases such as “wide false joints” (referring to false joints with abnormally increased joint widths), reflective cracks, and uneven support.

Plastic Nail Plate

This article is based on the principles of mechanics and pavement design theory, analyzing the mechanism of asphalt isolation layer in stress transmission, friction characteristics, and temperature response.

Combined with engineering examples, it reveals the inherent mechanism that leads to the deterioration of the stress state of the pavement layer, aiming to provide theoretical reference and practical basis for the design of airport cement concrete pavement structures.

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The seven day strength of concrete is one of the key indicators for construction quality control, and its specific value is influenced by factors such as mix proportion, curing conditions, and cement type.

Concrete Plate Anchors

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When it comes to materials that enhance concrete, the first thing that comes to mind is definitely steel bars.

But you know what? In the microcosm, there is still a group of ‘unknown heroes’ silently contributing, which are engineering fibers.

Spherical Head Anchor

They are like the roots of plants, like the bones of animals, forming a three-dimensional network inside concrete, significantly enhancing the “vitality” of concrete.

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In the design of concrete mix proportions, the amount of cement used is the core parameter that directly determines the total amount of cementitious materials, the composition of hydration products, and the compactness of the microstructure of the concrete, thereby profoundly affecting the carbonation depth from three dimensions: “alkali reserve supply”, “pore structure optimization”, and “interface transition zone improvement”.

Shuttering Magnet

Scientific clarification of the intrinsic relationship between the two is of crucial guiding significance for improving concrete carbonation resistance and extending structural durability through mix proportion optimization.

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