This is not a metaphor.
In the few seconds you read this sentence, every bridge, dam, and skyscraper in the world is experiencing an invisible nanoscale war inside its concrete – and the protagonist is water.
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precast-tech
precast-tech
Analysis and adjustment plan for concrete and workability issues
Concrete workability (also known as workability) is the comprehensive workability of freshly mixed concrete, which refers to the ability of the mixture to be easily mixed, transported, poured, compacted, and to form uniform and dense concrete.
It directly affects the construction quality and forming effect.
Liquidity consists of three parts: fluidity, cohesiveness, and water retention, which are interrelated and mutually restrictive.
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Daily Science: Did the first crack inside the concrete actually occur here?
Many people instinctively stare at the surface line when they see concrete cracking.
There is a crack on the wall, a crack at the bottom of the beam, and a fine line on the floor, as if the crack suddenly appeared from the visible area to the naked eye.
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From rice husk ash to green high-performance concrete: a new path for low-carbon “cement” | MDPI Recycling
Click on “MDPI Environment and Earth Sciences” in the upper left corner to follow us and push you more latest information.
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【 Water Conservancy Knowledge Sharing 】 Technical Requirements for Production and Pouring of Concrete
Concrete is the most widely used building material in water conservancy and hydropower projects, and its production and pouring quality directly affect the safety and durability of the engineering structure.
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New Quota |Reinforcement and Concrete Engineering -02
In order to implement the market-oriented reform of engineering cost, strengthen the dynamic management of pricing basis, and provide supporting support for the implementation of the “Valuation Standards for Construction Engineering Quantity List” GB/T 50500-2024 and various professional engineering quantity calculation standards, the Provincial Department of Housing and Urban Rural Development has revised and adjusted a series of construction engineering cost pricing basis such as “Composition and Calculation Rules for Construction Engineering Cost Projects in Shandong Province”, “Consumption Quota for Construction Engineering in Shandong Province”, “Consumption Quota for Installation Engineering in Shandong Province”, “Consumption Quota for Municipal Engineering in Shandong Province” and “Consumption Quota for Landscape and Greening Engineering in Shandong Province”, which will be implemented from November 1, 2025.
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Analysis of the causes of cracks in concrete pavement and exploration of grouting material technology
Cracks are the most common early disease of cement concrete pavement and the core starting point for inducing structural damage.
From the perspective of engineering operation and maintenance, pavement cracks can be mainly divided into two categories: one is load type cracks, which are generated by repeated impacts and long-term fatigue effects of vehicle wheel loads, and often develop synchronously with slab bottom detachment and stress concentration; The other type is non load type cracks, which are dominated by the volume deformation of concrete, and the core causes are temperature shrinkage and drying shrinkage.
Chemical shrinkage accounts for a very low proportion and is generally not the main controlling factor.
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Analysis of the Impact of Adjusting the Tax Rate on Commercial Concrete from 3% to 13% on Construction Parties
According to Announcement No.
10 of 2026 by the Ministry of Finance and the State Administration of Taxation, starting from January 1, 2026, the original 3% simplified tax calculation policy for general taxpayers of commercial concrete will be officially abolished, and the 13% value-added tax rate will be uniformly implemented for self-produced ready mixed concrete.
Up to now, it has been implemented for about half a year, changing the tax calculation and deduction rules for concrete materials in the construction industry, which has had a significant impact on the entire construction chain, including concrete mixing plants, construction general contractors, construction units, and cost audits.
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Literature Sharing 182: Linen, Glass, and Carbon Fiber Fabric Reinforced Concrete: Experimental and Machine Learning Evaluation of Tensile
Fabric reinforced concrete (TRC) is widely used in the reinforcement of thin-walled components and structures due to its lightweight, corrosion resistance, and excellent crack control properties.
In the context of sustainable building development, natural fiber fabrics such as flax have attracted attention as low-carbon alternative materials.
However, under unified experimental conditions, there is still a lack of direct comparative research on the mechanical properties of flax with traditional carbon fiber and alkali resistant glass fiber TRC.
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Essential information for safety officers: 5 commonly used safety operating procedures for concrete machinery, summarized in one go
The rotation speed of the manual concrete mixer should be slow and uniform, and the length of the traction rope should meet the safety distance requirements.
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