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...

Abstract Due to the increasing demand for mechanical properties of construction materials, High Strength Concrete (HSC) has been increasingly popular in recent decades. The raw materials utilized production it consume energy and negatively affect environment. There is a pressing need protect environment conserve natural resources which are being affected by both cement manufacturing aggregate p...

This paper studies how the activity of hydraulic excavators found in Rosia quarry Jiu affects environment. For this study we chose Caterpillar 323D L and 323 D LN excavators. The took place over a period 30 days. These days have collected data on noise level PM 10 particles quarry. equipment not only helps to build better world, but also preserve environment, which is so fragile today. evolutio...

OBJECTIVE To compare biodegradable magnesium phosphate cement (Mg-cement), calcium phosphate cement (Ca-cement), and no cement on bone repair, biocompatibility, and bone adhesive characteristics in vivo in horses. ANIMALS 8 clinically normal adult horses. PROCEDURES Triangular fragments (1-cm-long arms) were created by Y-shaped osteotomy of the second and fourth metatarsal bones (MTII and M...