MUMBAI, India, Nov. 7 -- Intellectual Property India has published a patent application (202431035283 A) filed by Indian Institute Of Technology, Bhubaneswar, Orissa, on May 3, 2024, for 'a rational system for testing resilient modulus of unbound granular materials.'
Inventor(s) include Dr. Umesh Chandra Sahoo; Tanmaya Kumar Barik; and Dr. Venugopal Arumuru.
The application for the patent was published on Nov. 7, under issue no. 45/2025.
According to the abstract released by the Intellectual Property India: "Resilient Modulus of unbound granular layer is one of the major parameters in pavement design procedure. However, the use of membrane to enclose the specimen in conventional repeated load triaxial test procedure makes the compaction and sample preparation very time consuming and complex. Attempts have been made to simplify the sample preparation by using springs or rubber as confinement. But the user will not be able to regulate the confining pressure with these materials. So, this invention uses single acting pneumatic cylinder to apply confining pressure to the sample that is enclosed in a split mould. The sample diameter is 150 mm and height of 300 mm and can test aggregate sizes below 30 mm. A single acting pneumatic cylinder is used to emulate the stiffness of soil subgrade that lies beneath the granular layer. The sample is placed on a base plate mounted on the pneumatic cylinder piston rod. It replicates the effect of subgrade modulus on resilient modulus of granular layer."
Disclaimer: Curated by HT Syndication.
