Tata Aggreto, a greener substitute of natural aggregates used in road construction, and Tata Nirman, used as a raw material in manufacturing of fly ash bricks and cement making, will be used in construction of blanketing layers in railway tracks. During the deliberation, Rajeev Shrivastava, Chief Administrative Officer (Construction) apprised participants of the plan chalked out to strengthen the rail infrastructure by the Ministry of Railways.