25-08-2017, 09:32 PM
CONCRETE
CONCRETE.pptx (Size: 668.85 KB / Downloads: 50)
Portland Cement
Dry powder of very fine particles
forms a paste when mixed with water
chemical reaction-Hydration
glue
paste coats all the aggregates together
hardens and forms a solid mass
Properties of Concrete
With proper materials and techniques, concrete can withstand many acids, silage, milk, manure, fertilizers, water, fire, and abrasion.
Concrete can be finished to produce surfaces ranging from glass-smooth to coarsely textured, and it can be colored with pigments or painted
Water to Cement Ratio
Should be kept as low as possible
5-6 gallons per sack of cement is acceptable