what is concrete?
advantages & disadvantages using concrete
type of concrete and uses
properties of fresh concrete
what is pre stressed cement concrete & its uses.
what is entertained concrete?
what is light weigh concrete?
what is timber?
the important of moisture in timber
what is the important & type of seasoning of timber
defect in timber
what is the advantages of plywood?
what is bitumen & uses?
where do you obtain bitumen?
what is the effect when you add aggregate to the binder?
what kind of surfacing material
why & how do you applying tanking using asphalt?
how do you apply and what is the purpose bitumen roofing
Question
- explain what are the common components are added together with cement to form fresh concrete
- explain in your own words how concrete provide strength and durability to construction
- state what are the aggregates that are found in the concrete
- explain what is lime concrete
- explain how timber are seasoned
- explain what is chemical seasoning for timber
- explain what are the 2 defects categories in timber
- explain what is bitumen
- explain what are the durability properties of bitumen
- explain what are the common failure mechanisms occurs in finished bitumen
1. Concrete are "Man made rock ", it is a composite material made up of a filler ( Aggregate )and a binder (Cement and Water).
a) water
b) fine aggregate
c) coarse aggregate
d) ad mixer
https://www.concretenetwork.com/concrete-mix-design/concrete_materials.htm
https://www.slideshare.net/NarendraGoud/water-in-concrete
http://matse1.matse.illinois.edu/concrete/prin.html
2.Durability => while maintaining its desired engineering properties, concrete are able :
a) resists weathering action
b) resists to chemical attack
c) resists to abrasion
d) ability to withstand nature’s normal deteriorating mechanisms
e) ability to withstand natural disasters.
Strength => when compression occurs, mechanical forces like aggregate friction, interlocking, binding action of adhesive is available.
a) ability to hold weight of the building
b) carry the load of the building
3. Aggregate found in concrete
a) mining of mineral aggregate deposits, including sand, gravel, and stone
b) recycling of concrete - crashed concrete
c) waste slag from the manufacture of iron and steel - steel slag
