On June 9th, the national cement market experienced small-scale fluctuations, with Jingdezhen rising by 10 yuan/ton and Fuyang, Bozhou, and Aksu falling by 10 yuan/ton.
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Month: June 2026
How to Reasonably Apply Concrete Shell Reinforcement Results under Small Bias Pressure in Knowledge Base
A simple supported unidirectional slab with a thickness of 250mm and a protective layer thickness of 25mm.
The concrete strength grade is C30, and the steel reinforcement is HRB400.
Modeling and loading are shown in Figure 1.
The right end of the board is a sliding support, and the left end is a hinged support.
The sliding end applied a certain axial force and a certain uniformly distributed surface load on the plate.
As shown in Figures 2 and 3, the manually calculated reinforcement area is 7.
608mm2, while the SAP2000 concrete shell reinforcement result is 2.
038mm2.
The difference between the two is significant.
Why is this?.
Seven concrete companies in Fujian have been included in the list of deadline rectification
In the first half of 2026, a total of 9 pre mixed concrete enterprises were inspected for qualification verification (hierarchical guidance), including 7 enterprises that have obtained professional contracting qualifications for pre mixed concrete since 2020, and 1 each in Licheng District and Meizhou.
Extract 8 parts of raw material sand, 8 parts of cement, and 8 parts of fly ash (to be notified separately after the test results are issued).
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National Standard | GB/T47546-2026 Test Method for Performance of Permeable Concrete
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Construction technology and hopper selection calculation for underwater concrete pouring
The pile foundation concrete of a certain bridge is C30 underwater concrete.
The concrete preparation and performance indicators are designed based on comprehensive factors such as bidding documents, construction drawings, specifications and technical standards, construction processes, etc.
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June 2nd National Cement, Sandstone, and Concrete Market
Click on the mini program to view 110 million market prices, manufacturer stamped quotation sheets, and free access to information prices from nearly 40000 issues across the country.
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Quick report: Production and economic indicators of concrete and cement products industry from January to April 2026
According to data analysis from the National Bureau of Statistics, from January to April 2026, the cumulative production of key products in the concrete and cement products industry will experience a comprehensive decline.
Among them, the cumulative production decline of cement drainage pipes and cement pressure pipes has narrowed compared to January to March, while the cumulative decline of commercial concrete, concrete poles, and precast concrete piles has further expanded compared to January to March.
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How many days does concrete have severe delayed setting and become weak without strength? Root cause+emergency measures
Excessive use of polycarboxylate and sodium gluconate as retarding components and water reducing agents can inhibit cement hydration, resulting in a mild delay of 2-5 days and long-term non hardening paste like appearance.
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13CJ39 concrete sealed cured floor
This atlas is applicable to the design and construction of concrete floors in industrial and public buildings with requirements for wear resistance, dust prevention, and corrosion prevention.
It can also be used for the renovation of old concrete floors and the sealing and curing treatment and decoration of outdoor concrete floors.
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How long can GFRP reinforcement in concrete withstand high temperatures? This study provides the answer
The concrete protective layer can significantly delay the tensile performance degradation of GFRP reinforcement at high temperatures, but it will lose its protective effect above 400 ℃; This article proposes a residual strength prediction model based on heat absorption parameters, providing a theoretical basis for the fire protection design of GFRP reinforced concrete structures.
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