From “flowability” to “precise control”: Southeast University team systematically sorts out a new path for rheological control of ultra-high

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The team led by Teng Le and Liu Jiaping from the School of Materials Science and Engineering at Southeast University collaborated with Kamal H.

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Khayat from the University of Missouri Science and Technology in the United States to publish a research article titled “Recent Advances in the Hydrological Properties of Ultra High Performance Concrete: A Critical Review” in the Chinese Academy of Engineering journal “Engineering”.

The article focuses on the requirements of advanced construction methods such as self compacting, pumping, spraying, and 3D printing, and systematically analyzes key issues such as how to smoothly construct ultra-high performance concrete (UHPC), how to stably form it, and how to accurately control it.

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Numerical analysis of flexural performance of ABAQUS hybrid fiber reinforced concrete

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The fiber material added to the concrete matrix can bear the tensile stress between cracks, reduce the deformation of the component, and highlight the tensile hardening characteristics of concrete.

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However, this effect cannot be fully utilized in compressive tests.

Referring to the HFRC test mix ratio mentioned earlier, the required specimens for bending tests are prepared and corresponding finite element models are established to study the mechanical performance of different steel-concrete fiber reinforced concrete in bending tests.

The three-dimensional finite element model is shown in Figure 4-7, and the boundary conditions and mesh division of the model are set according to the previous description.

At the same time, in order to make the numerical simulation results closer to macroscopic experiments, it is necessary to focus on the contact relationship between the support and the specimen, and refer to reference [54] to define the friction properties of the contact surface here.

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The construction of the western region is expected to incur a maximum loss of 330 million yuan in the first half of the year, intensifying

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On the evening of July 13th, the leading company in the domestic ready mixed concrete industry, Western Construction (002302), disclosed its performance forecast for the first half of 2026.

The company expects a net profit loss attributable to shareholders of the listed company of RMB 170 million to RMB 330 million, further expanding from the loss of RMB 96.

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2749 million in the same period last year.

The net profit after deducting non recurring gains and losses is expected to be a loss of 195 million to 355 million yuan, compared to a loss of 172 million yuan in the same period last year.

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Concrete Weekly Report: The overall weak and stable operation of the concrete market in central and southern China continues, with obvious

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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.

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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

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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.

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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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