<p>40mmBC (BG-60/70): Providing 40mm thick (minimum) compacted pre-mixed bituminous carpeting to be prepared using 25mm downgraded crushed stone chips (LAA value &lt;= 30%) to comply the gradation as specified, mixed with heated bitumen of 60/70 penetration grade straight run bitumen satisfying the requirements of ASTM/AASHTO. The bitumen and stone-chips shall be separately heated to a temperature 140°C-155°C and 150°C-170°C respectively before mixing. The mixing shall be done at temperature between 140°C-160°C at a separate place away from the fire. The bitumen and stone-chips mixture shall be laid uniformly, maintaining specified camber, grade and super-elevation only on the prepared and accepted base or surface in a single appropriate layer to give the specified compacted thickness. The mixture should be rolled with appropriate Steel Drum Roller (3-5 tons) &amp; pneumatic multiple tire roller (8-10 tons) to full compaction. The rolling temperature shall be maintained not below 90°C. including supplying of all materials, their carriage, labourers, tools and equipment etc. all complete as per direction of the E-I-C. The bitumen in the mix shall be between @4.5% to 5.5% by weight of total mix or as determined by job mix design. (In order to achieve the specified grading a blending of nominal maximum size of 25mm, 19mm, 12mm, 6mm crushed stone chips and stone dust is suggested and proportion will have to determine by the laboratory analysis). [Bulk]</p>