Floor grouting reinforcement and aquifer reform can effectively improve the water barrier performance of fractured rock mass, which is widely used to prevent inrush from a confined in theClean Utilization SDUST Research Fund floor. In order reveal mechanical strain energy characteristics mass after with different parameters, discrete element numerical simulation software PFC study limestone fil...

A significant problem associated with asphalt concrete mixtures is the lack of durability resulting from an inadequate asphalt cement content. Additional asphalt cement added to increase durability results in flushing, bleeding and a significant loss In stability. Fibers have been used in stone matrix asphalt and open-graded friction course pavements successfully throughout Europe to allow high...

It has long been known that temperature during circulation and after cement placement is one of the most important parameters for slurry design and the success in cement production. Conventional cements and low density cement slurries usually take a long time to set and cannot provide significant compressive strength. Therefore, it is important to design appropriate low density cement slurries ...

bladder stone is an old known mankind disease. it is a problem of male and is more common in children of underdeveloped countries and old age men in industrialized countries. giant bladder stone in a female without any underlying problem is even a rarer entity. the case alone is hence being reported in view of its rarity and persistence of stone from childhood

Characteristics of produced concrete become changedthrough changingthe characteristics of materials constituting the concrete. These changes include: The quality of cement, the real ration of water to cement: with neglecting the further water within the aggregates or lack of that, the consideredratio fluctuates and the characteristics of the aggregate which are related to the following dimensio...