Commercial Metals has patented an apparatus for constructing displacement aggregate piers. The system includes a mandrel with a tamper head, cutting teeth, hydrojet nozzles, grout tubes, and inspection lines. The design allows for efficient construction of grouted aggregate piers. GlobalData’s report on Commercial Metals gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Commercial Metals, was a key innovation area identified from patents. Commercial Metals's grant share as of May 2024 was 40%. Grant share is based on the ratio of number of grants to total number of patents.
System for constructing grouted aggregate piers with mandrel
A newly granted patent (Publication Number: US12000106B2) discloses a system for constructing grouted aggregate piers, featuring a mandrel with an upper feed tube portion, tamper head, and a passage for feeding aggregate. The system includes a grout injection line and a grout inspection line with matching inner diameters for verifying the elevation of grout within the mandrel. Additionally, radially expandable diametric restriction elements are incorporated into the tamper head for compaction during the construction process.
Furthermore, the patent outlines a method for constructing aggregate piers using the described system. The method involves driving the mandrel through soils, lifting it to a specified distance, and repeating the process with the aid of radially expandable elements for compaction. The elevation of grout pressure is verified using the grout inspection line, ensuring accurate construction. Grout is introduced at predetermined depths during the driving and lifting process, facilitating the creation of stable and reliable grouted aggregate piers.
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