Bis License For Lime-Pozzolana Concrete Blocks For Paving As per IS 10360:1982, a BIS license is mandatory for lime-pozzolana concrete blocks for paving. Manufacturers must ensure that their paving blocks meet the required standards and bear the BIS quality mark. This license guarantees the strength, durability and performance of the paving blocks, ensuring they are suitable for construction and infrastructure projects. IS 10360: Lime-pozzolana concrete blocks for paving Under the IS 10360:1982 standard, all lime-pozzolana concrete blocks for paving must be certified under the BIS certification scheme. Without the ISI mark on these products, they cannot be legally sold, imported or used in construction projects across India.