This document discusses different types of concrete materials used in building construction. It describes self-compacting concrete that does not require vibration and normal concrete which has a density between 140-175 pounds per cubic foot. The document also outlines common concrete problems like scaling and cracking, as well as maintenance techniques to prevent visible deterioration and the need for regular inspections. Finally, it mentions two types of concrete finishes - engraved concrete using diamond blade cutting and broom finished concrete which is both decorative and slip resistant.

1. BUILDING MATERIALS
CONCRETE
Lee Pei Gie 0315653
Joanne Tee Sin Yi 0315689
Yong Seen Yee 0315883
Hii Pai Ling 0320598
Khoo Xin Yee 0316180

2. 2 TYPES OF CONCRETE
Self Compacting
Concrete
-No vibration required
-a.k.a self consolidated
concrete & flowing
concrete
Normal Concrete
- Density ranges from
140pcf to 175 pcf
- Air content 1-2%

3. 2 ADVANTAGES OF
CONCRETE
• High compressive strength
• Easily handled

4. COMMON CONCRETE
PROBLEMS
Scaling
• Flaking and peeling of a
finished surface of
hardened concrete.
Cracking
• Concrete could shrink
and sometimes it could
not be prevented but it
can be controlled.

5. MAINTENANCE OF
CONCRETE
• Preventative maintenance
-To prevent appearance of visible deterioration on the
structure during service time. For example, in the winter
time, sealing compounds and coating can prevent the
concrete from damaging. It will totally waterproof concrete.
• Inspective maintenance
-Concrete must be inspected regularly to ensure that it is
receiving the maintenance necessary to retain serviceability.
Especially, for the underground concrete.

6. 2 TYPE OF CONCRETE
FINISHES
Engraved Concrete
-rock design
-diamond blade cutting
wheels
Broom Finished
Concrete
-decorative
-slip resistant