PGXpand®, a unique polymer specially engineered by Sripath Technologies, was successfully used by PATH India Ltd to improve rutting performance on a 4-lane km stretch of Agra-Gwalior Highway in India. PGXpand enhances the high temperature properties of bitumen without impacting low temperature properties. A mix based on PGXpand® Modified Bitumen delivers outstanding rutting resistance, fatigue properties, long-term durability, and overall roadway performance.
PGXpand is highly dosage efficient, easy to incorporate into bitumen and helps reduce the paving temperature. It reduces both energy consumption and overall costs.
About 1.5 wt. % of PGXpand was added to VG30 grade bitumen for this trial. The Mix based on this PMB was used to pave a 30 mm wear layer on a 4 lane-km stretch of Agra-Gwalior highway about 40 km from Gwalior, Madhya Pradesh. This highway is subject to heavy truck and vehicular traffic all year round and is exposed to high air temperatures, in excess of 45 ºC, for extended periods of time.
“Rutting has been our main concern on this highway”, said Mr. Dharmendra Mishra, Quality Control Manager, PATH India. He further stated: “With PGXpand, we hope that our problem is resolved successfully”.
“The PGXpand Modified Bitumen trial was very successful. It was hassle-free to manufacture the PMB and the Mix, it was simple to transport the Mix to the site, and the roadway was easy to pave. We are waiting for the post-trial evaluation results and, if everything looks good, we will surely use PGXpand on our other projects”, remarked Mr. Nakul Agarwal, Project Head, PATH India.
“PGXpand has been tested, evaluated, and vetted by leading experts in academia, industry and transportation agencies from around the world. It has been trusted and effectively used on roadways across the globe since 2015.”, remarked Sachin Raje, GM of Bitpath Pvt. Ltd., an affiliate of Sripath Technologies LLC.