Truck and shovel are the most common raw material transportation system used in the cement quarry operations. One of the major challenges associated with the cement quarry operations is the efficient allocation of truck and shovel to the mining faces. In order to minimize the truck and shovel operating cost, subject to quantity and quality constraints, the mixed integer linear programing (MILP)...

As part of a study of exposure to and risk from potential emissions of asbestos from the Southdown Quarry (now Cemex), a series of rock core segments representing each of multiple depths were acquired from historical drill core samples of Quarry material provided by the quarry. The samples were then analyzed for the determination of asbestos and related structures. Results are summarized below ...

Background: Cement production is associated with heavy metal emissions and environmental pollution by cement dust. The degree of contamination of drinking water sources by major and trace elements present in cement dust generated by united cement factory (UNICEM) is still uncertain. This study estimated the element content of ground and surface water samples (hand-dug wells, boreholes and strea...

Scarcity and the high cost of natural river sand due to government restrictions are major problems for construction industry. It was observed that cement quarry dust ratio is higher in concrete mixes compared conventional used highway projects effects influenced by shape, surface & content micro fines dust. In this study, ratios were optimized obtain optimum strength, workability use using ...

Concrete mechanical properties could be improved through adding different materials at the mixing stage. Quarry dust (QD) is waste produced by manufactured sand machines and comprise approximately 30–40% of total quantity QD generated. When it dries, transforms into a fine that poses tremendous hazard to environment contaminating soil water seriously endangering human health. utilization in con...