Month: July 2026

The annual production of global construction waste exceeds 3 billion tons, and 95% of traditional recycling methods are only used for roadbed or landfill, resulting in low resource utilization.

Cement production contributes 74-81% of concrete carbon emissions and is a key link in carbon reduction.

Concrete Lifting Clutch

Traditional recycled aggregates replacing natural aggregates only reduce carbon emissions by 2%, with limited effectiveness.

The cementless recycled compacted concrete process can achieve zero waste and complete recycling, which is the most promising low-carbon path.

However, the high preparation pressure of 100 MPa limits its practical engineering applications, and there is an urgent need to develop low-pressure preparation processes and quantify environmental benefits.

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In the research on concrete with defects, most scholars have detected the defects of concrete.

Zhao Chuanping et al.

used indoor testing methods to study the intelligent detection of internal defects in concrete based on ultrasonic method; Zhu Hongwu used phased array ultrasonic imaging method to detect internal defects in concrete; Yu Xiaofei et al.

studied the detection of defects in basement floor concrete using phased array ultrasonic imaging method; Jiang Wenhao and others used unmanned ships equipped with side scan sonar to explore and quantify defects in underwater concrete structures; Cao Guojin et al.

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used deep learning computer vision methods to study the detection of surface defects in hydraulic concrete structures.

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During the long-term service of concrete structures, cracks are commonly present and difficult to avoid due to multiple factors such as material properties, environmental effects, design and construction, and usage loads.

As a key load-bearing component in building structures, the appearance and development of cracks in beams are particularly noteworthy.

These cracks not only affect the aesthetics and functional use of buildings, but more importantly, as important external manifestations of the deterioration of the internal state of the structure, their shape, distribution, width, and development trend directly affect the overall integrity, durability, and even load-bearing safety of the structure.

Minor cracks may accelerate the invasion of moisture and harmful media, causing internal steel reinforcement corrosion and expansion, resulting in the peeling of concrete protective layer, reduction of effective cross-section, and ultimately significantly reducing the stiffness and bearing capacity of components.

Magnetic Thread Disc

In severe cases, it may induce brittle failure or structural failure, posing a potential threat to the safety of building use.

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In the design of ordinary concrete mix proportions, the workability, compressive strength, and economy of concrete are several important control indicators.

Rebar Saddles

The proportion of various mineral admixtures added to concrete has a significant impact on the above indicators.

Through repeated experiments in the laboratory, it was found that:.

Concrete is the most widely used building material globally, and compressive strength is the core indicator for determining structural quality.

The 28 day standard maintenance testing process commonly used in the industry has significant lag: when unqualified batches are discovered, the concrete is often already poured and formed, resulting in extremely high rework costs and even leaving structural safety hazards.

Plastic Rebar Chairs

For high-capacity ready mixed concrete (RMC) mixing plants, the quality confirmation cycle of nearly a month is seriously disconnected from the operational needs of continuous production.

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During the production process of aerated concrete, steam curing cracks have always been a difficult problem for many manufacturers.

Spread Anchor

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Seawater, deicing salt, and high humidity water vapor will continuously penetrate inward through the pores of concrete.

Edge Lift Anchor

Once they come into contact with the internal steel bars, they will cause corrosion, volume expansion, and ultimately lead to concrete peeling, cracking, and flaking, greatly shortening the service life of the building.

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On July 8th, the national cement market was mainly down, with Qingdao, Weihai, Yantai, Zhengzhou, Tangshan, Qinhuangdao, and Xi’an falling by 5-20 yuan/ton.

Coil Loop Insert

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According to the Notice on the Revision of the Shaanxi Province Engineering Cost Information Material Information Price Catalog issued by the Shaanxi Provincial Construction Engineering Cost Service Center, starting from February 2025, the information price of ready mixed concrete will be re included in the Shaanxi Engineering Cost Information and published in the form of a special report.

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According to the “Value Added Tax Law of the People’s Republic of China” and the “Announcement on the Connection of Value Added Tax Preferential Policies after the Implementation of the Value Added Tax Law” (Announcement No.

10 of 2026 by the Ministry of Finance and the State Administration of Taxation), the tax inclusive price of ready mixed concrete will be published at a general taxpayer tax rate of 13% starting from February 2026.

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This includes the inspection of various mechanical equipment (such as mixing equipment, tank trucks, cranes, conveying pumps, etc.

), as well as the inspection of supports, hoppers, conduits, hole cleaning equipment (including air compressors, air ducts, etc.

Lifting Socket

), concrete transport vehicles, etc.

used for pouring concrete, to ensure their normal use during construction.

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