Incorrect specification of steel bars, inaccurate spacing, insufficient protective layer, weak binding, and inadequate concealed acceptance can all affect the quality of the structure.
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precast-tech
precast technology developments
Concrete Weekly Report: The overall weak and stable operation of the concrete market in central and southern China continues, with obvious
This week, the Guangdong concrete market continued its weak operating pattern of stable prices, weak demand, and hindered cost transmission.
The upstream cement prices have risen for two consecutive rounds, but due to the multiple constraints of weak demand, payment pressure, and industry competition, the finished product prices are unable to keep up.
Although the concrete prices in the Guangdong region are at a national high, actual transactions are relatively weak, and the overall market trend is mainly characterized by a smooth transition.
The concrete market in Guangxi presents a pattern of upstream push up, local exploration and follow-up, and weak demand constraints.
Driven by a cost increase of 40 yuan/ton in cement prices across the region in early July, concrete prices in Nanning, Yulin, Chongzuo and other places saw a slight increase of 10 yuan/cubic meter at the beginning of this week.
However, due to the multiple pressures of sustained heavy rainfall, floods, and sluggish demand, the market as a whole has transitioned smoothly after the implementation of price increases, and there is still significant uncertainty in the subsequent trend.
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【 Water Conservancy Knowledge Sharing 】 Key points of roller compacted concrete construction technology
Roller compacted concrete dam is a new technology for concrete dam construction, which adopts the construction method of roller compacted earth rock dam and uses dry lean concrete to build concrete dams.
Its construction integrates the technological characteristics of concrete dams and earth rock dams, and has unique technical requirements in terms of structural form, construction technology, and quality control.
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Concrete Theory Knowledge Question Bank: Cement Chapter (1)
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Cement is a kind of hydraulic gel material, which will react physically and chemically when it meets water, and can change from plastic paste to hard stone.
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Why is it strictly prohibited to place concrete standard curing test blocks in commercial mixing stations for curing?
1、 The compliance of concrete test block curing is a key link in engineering quality control, and the curing standard curing test blocks of commercial mixing stations do not meet the requirements of the specifications.
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Sending Coolness in the Heat of Summer, Concentrating to Ensure Contract Fulfillment | Our Company Goes to Various Cooperation Projects to
After the onset of summer, Xi’an continued to experience high temperatures and heat waves, with scorching sun for several days, and the surface temperature at the construction site remained high.
Each ongoing project is striving to seize the golden construction period.
Project management personnel and frontline construction workers are not afraid of the scorching heat, sticking to the front line of work, racing against time to advance construction nodes, and using sweat to ensure the orderly implementation of project construction.
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Systematic study on rheological properties of alkali activated materials during 3D printing process: influence of precursor properties
3D printed concrete has high requirements for the early age rheological properties of materials.
The materials need to have sufficient fluidity during pumping and extrusion stages, as well as quickly restore structural strength after deposition to ensure stability during layer by layer stacking.
Alkali activated materials are considered an important development direction for 3D printing cement-based materials due to their advantages of low carbon, early strength, and the ability to utilize industrial by-products.
However, the rheological behavior of alkali activated materials is significantly affected by the type of precursor, especially the properties such as static yield stress, thixotropy, and viscosity recovery, which directly determine their printability and constructability.
Therefore, it is necessary to systematically study the influence of different precursors on the rheological properties of 3D printed alkali excited materials.
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Industry Data: Import and Export of Concrete Mixing Machinery from January to May
Source: China Chamber of Commerce for Import and Export of Mechanical and Electrical Products.
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June 2026 National Pre mixed Concrete (Commercial Concrete) Industry Market Survey Report: Demand bottoming out in the off-season, rigid
[Explanation] This article provides macro data on the total production of commercial concrete in China, regional operating rates, mainstream transaction prices, full chain costs, capacity utilization rates, and industry average payments, all of which are sourced from the National Bureau of Statistics, industry associations, and authoritative monitoring platforms and can be cross verified; Doubtful information: Daily production and sales ledger of single commercial concrete stations, exclusive customized procurement prices for enterprises, non-standard sub division delivery prices for districts and counties, precise material costs for individual projects, without official public disclosure of sub division standards.
All segmented data in this article are the national authoritative sampling mean, with individual, regional, and individual biases.
They are only used for industry macro trend analysis and cannot be directly used as the sole basis for single site bidding pricing, accurate cost accounting, and performance evaluation.
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