Building Material

The concrete hollow floor removes part of the concrete that has little impact on the flexural and shear resistance of the slab. Therefore, its macroscopic force and failure characteristics are similar to those of a solid slab. However, due to the presence of cavities and slab ribs, the stress distribution at the micro level of the floor is significantly concentrated at key positions such as the four corners of the core tubes at wall-column supports and the protruding parts of frame columns, which requires strengthening measures. Generally, methods such as retaining a certain width of solid slab in the corresponding parts, extracting part of the hollow area to form a solid slab area, and adding steel mesh sheets can be adopted for strengthening.When the internal membranes of the cast-in-pla...

https://www.jj-machinery.com/Key-Components-of-Gypsum-Mortar-Equipment.html In modern construction, gypsum mortar equipment plays a vital role in achieving high-quality, efficient, and consistent wall finishes. The performance and reliability of such equipment depend heavily on the design, materials, and technology behind its key components. Wuxi Jiangjia Construction Machinery Co., Ltd., a trusted manufacturer in the construction machinery sector, integrates advanced engineering and strict quality control to ensure its gypsum mortar equipment meets the demanding needs of the global market.Below is a closer look at the essential components that define the performance of gypsum mortar equipment.1. Mixing Blades – The Heart of Uniform BlendingThe mixing system directly influences mortar cons...

As urban infrastructure modernizes and cities demand more from their materials, the humble manhole cover is getting a high-tech upgrade. While traditional cast iron manhole covers have long been the industry standard, composite manhole covers are rapidly emerging as a smart, modern alternative.At the forefront of this evolution is Shandong New Line Import and Export Co., LTD, a company dedicated to producing high-quality road hardware, access covers, and custom steel solutions. With a focus on durability, safety, and innovation, they are helping global partners transition to more advanced, cost-effective infrastructure components.Here are six compelling reasons why more municipalities, contractors, and engineers are choosing composite manhole covers over traditional cast iron:1. Corrosion ...