International Journal of Engineering Trends and Technology (IJETT) – Volume 19 Number 4 – Jan 2015 IV. CONCLUSION Based on the results of the experimental investigation, following conclusions could be drawn as follows: In Concrete, Natural sand can be replaced with plastic waste by 10 to 20% to achieve green concrete. Sand can also be … Continuer la lecture de Green Concrete using Plastic Waste
The New York Times, Credit : Jesse Draxler BERKELEY, Calif. — TO those of us who visit beaches only in summer, they seem as permanent a part of our natural heritage as the Rocky Mountains and the Great Lakes. But shore dwellers know differently. Beaches are the most transitory of landscapes, and sand beaches the most … Continuer la lecture de Why Sand Is Disappearing ?