Precast News From China
Use distillation to remove residual formaldehyde from the sample.
In a pH 6 acetic acid ammonium acetate buffer solution, formaldehyde in the fraction reacts with acetylacetone under heating conditions to form a stable yellow complex.
After cooling, absorbance testing is performed at a wavelength of 412nm.
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In the design and full lifecycle operation and maintenance of rigid (cement concrete) pavement engineering in modern high-level airports, the mechanical behavior of the joint system is always the decisive factor determining the overall structural performance.
As a quasi brittle material, cement concrete pavement panels are inevitably subjected to warping and shrinkage stresses caused by environmental temperature gradients and humidity changes during service, and must also withstand multi axle dynamic impact loads from large tonnage, high tire pressure aircraft.
In order to actively control and release these environmental stresses, the engineering community has established the basic paradigm of manually dividing pavement slabs by cutting or reserving transverse shrinkage joints, longitudinal shrinkage joints, construction joints, and expansion joints.
However, this artificially created physical fracture to alleviate internal stress inevitably damages the overall continuity of the pavement structure, making the joint area the weakest link for stress concentration, deflection mutation, and hydrological invasion.
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In the era of unlimited price, the price game in the Hangzhou real estate market is becoming increasingly fierce.
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With the increasing scarcity of urban land resources and the continuous tightening of environmental supervision, traditional concrete mixing plants with large land areas and loose layouts are no longer able to meet the current industry development needs.
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The imitation masonry combination mold launched by Weikai Zhongrun, through the synergistic effect of functional film materials and magnetic positioning decorative strips, achieves the effect of presenting brick like, stone like and other masonry order effects in one molding of concrete, bringing a new solution of low maintenance and high quality to public buildings and municipal engineering.
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The three-point bending test of concrete is a key method for evaluating its flexural strength, fracture toughness, and damage evolution (improved based on the GB/T 232-2010 metal material bending standard).
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On February 27, 2026, the Concrete Admixtures Branch of the China Building Materials Federation organized an expert review meeting for the “New Developments in Research and Application of Concrete Admixtures in 2026” essay competition through video conference.
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Have you ever had an experience where you finally managed to gather enough down payment to buy a house, only to be stunned by the parking price and say, “It’s just four lines and one frame.
Why is it even more expensive than my car.
Against the backdrop of the global construction industry accelerating towards low-carbon transformation, how to properly handle and utilize massive amounts of construction waste has become a core issue in the engineering industry.
This week, the authoritative institution in the field of precast components in Europe officially released the “2026 Application Guidelines for Recycled Concrete Components”, while also warming up the upcoming BIBM 2026 conference in Rome.
This marks a new stage of standardization and scale in the application of “recycled concrete” in structural precast components.
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On March 10th, the national cement market was mainly declining, with some cities including Fujian and Chongqing experiencing price drops.
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