good knolege about cement

1. CONCRETE PRICING
A Guide to Concrete Pricing
Part 1 when we get concrete from
concrete suppliers
Prepared by Eng Abdelrahman Zayed
Concrete Expert Orascomci
April 2014
April 2014
Abdelrahman.zayed@Orascomci.com
Tel 01222202289 privet
Tel 01224006892 company

2. 2
THE “QUALITY” ZED AND THE COST OF
QUALITY
BOQ RATE FOR WHAT WE DO
COST PROFIT
Zero
Defects
If an error is made,
The COST to produce
A correct product is:
1 + 1 ¼ + 1 = 3 ¼
WHAT ABOUT OUR
PROFIT???
1
1
1 ¼

3. Concrete Materials
3

4. Concrete is basically a mixture of
cement, water/air, and aggregates
(percentages are by volume

5. Portland, Blended, and Other
Hydraulic Cements

6. Concrete Materials
What is the benefit of cement ?
 The cement powder,
when mixed with
water,
 Forms a paste.
 This paste acts like
glue and holds or
bonds the aggregates
together.
CEMENT
6

7. What are Cement Specification
 There is two standards of cement process
and productions as follows :-
 EN Standard (EN 197-1) ( Cem I , Cem II
,…)
 ASTM C150 ( Type I , Type II , Type III ,…)

8. Cement EN 197-1
Example of naming
CEM II / B - M (S-V) 42.5N PM-ES-CP2*
Cement family
CEM I : Portland cement
CEM II : composite Portland cement
CEM III : blast furnace cement
CEM IV : pozzolanic cement
CEM V : slag and ash cement
Quantity of main constituents
other than
clinker (as a % added)
A: from 6 to 20%
B: from 21 to 35 %
C: from 36 to 65 %
(slag for EM III)
* See French standard for cement NF EN 197-1
General
Cement
Additions
Aggregates
Water
Admixtures
Fibres

9. Cement
Example of naming
CEM II / B - M (S-V) 42,5N PM-ES-CP2*
Cement family
CEM I : Portland cement
CEM II : composite Portland cement
CEM III : blast furnace cement
CEM IV : puzzolanic cement
CEM V : slag and ash cement
Quantity of main constituents
other than
clinker (as a % added)
A: from 6 to 20%
B: from 21 to 35 %
C: from 36 to 65 %
(slag for EM III)
Cement with at least
2 main constituents
other than clinker
* See French standard for cement NF EN 197-1
General
Cement
Additions
Aggregates
Water
Admixtures
Fibres

10. Cement
Example of naming
CEM II / B - M (S-V) 42.5N PM-ES-CP2*
Cement family
CEM I: Portland cement
CEM II: composite Portland cement
CEM III: blast furnace cement
CEM IV: puzzolanic cement
CEM V: slag and ash cement
Quantity of main constituents
other than
clinker (as a % added)
A: from 6 to 20%
B: from 21 to 35 %
C: from 36 to 65 %
(slag for EM III)
Cement with at least
2 main constituents
other than clinker
Names of the main constituents
S: Aggregated slag from blast furnaces
V: silicious fly ash
W: calcic fly ash
L or LL: limestone (depending on the percentage
of organic carbon)
D: silica fume
P or Q: pozzolanic materials
T: Pre-fired shale
* See French standard for cement NF EN 197-1
General
Cement
Additions
Aggregates
Water
Admixtures
Fibres

11. Cement
Example of naming
CEM II / B - M (S-V) 42.5N PM-ES-CP2*
Cement family
CEM I: Portland cement
CEM II: composite Portland cement
CEM III: blast furnace cement
CEM IV: puzzolanic cement
CEM V: slag and ash cement
Quantity of main constituents
other than
clinker (as a % added)
A: from 6 to 20%
B: from 21 to 35 %
C: from 36 to 65 %
(slag for EM III)
Cement with at least
2 main constituents
other than clinker
Names of the main constituents
S: aggregated slag from blast furnaces
V: silicious fly ash
W: calcic fly ash
L or LL: limestone (depending on the percentage
of organic carbon)
D: silica fume
P or Q: puzzolanic materials
T: Pre-fired shale
strength classes (minimum characteristic
strength at 28 days, expressed in MPa):
32.5 or 42.5 or 52.5
* See French standard for cement NF EN 197-1
General
Cement
Additions
Aggregates
Water
Admixtures
Fibres

12. Cement
Example of naming
CEM II / B - M (S-V) 42,5N PM-ES-CP2*
Cement family
CEM I: Portland cement
CEM II: composite Portland cement
CEM III: blast furnace cement
CEM IV: puzzolanic cement
CEM V: slag and ash cement
Quantity of main constituents
other than
clinker (as a % added)
A: from 6 to 20%
B: from 21 to 35 %
C: from 36 to 65 %
(slag for EM III)
Cement with at least
2 main constituents
other than clinker
Names of the main constituents
S: aggregated slag from blast furnaces
V: silicious fly ash
W: calcic fly ash
L or LL: limestone (depending on the percentage
of organic carbon)
D: silica fume
P or Q: puzzolanic materials
T: Pre-fired shale
strength classes (minimum characteristic
strength at 28 days, expressed in MPa):
32.5 or 42.5 or 52.5
strength sub-classes (minimum characteristic strength
after 2 days, expressed in MPa).
N: Normal
R: Quick
* See French standard for cement NF EN 197-1
General
Cement
Additions
Aggregates
Water
Admixtures
Fibres

13. Cement
Example of naming
CEM II / B - M (S-V) 42.5N PM-ES-CP2*
Cement family
CEM I: Portland cement
CEM II: composite Portland cement
CEM III: blast furnace cement
CEM IV: puzzolanic cement
CEM V: slag and ash cement
Quantity of main constituents
other than
clinker (as a % added)
A: from 6 to 20%
B: from 21 to 35 %
C: from 36 to 65 %
(slag for EM III)
Cement with at least
2 main constituents
other than clinker
Names of the main constituents
S: aggregated slag from blast furnaces
V: silicious fly ash
W: calcic fly ash
L or LL: limestone (depending on the percentage
of organic carbon)
D: silica fume
P or Q: puzzolanic materials
T: Pre-fired shale
strength classes (minimum characteristic
strength at 28 days, expressed in MPa):
32.5 or 42.5 or 52.5
strength sub-classes (minimum characteristic strength
after 2 days, expressed in MPa).
N: Normal
R: Quick
Further characteristics
PM: cement for working by the sea
ES: cement for working in water with a high sulphate content
CP: cement with low initial hydration heat and limited sulphur
content* See French standard for cement NF EN 197-1
General
Cement
Additions
Aggregates
Water
Admixtures
Fibres

14. Cement
Categories and Classes
TYPES
STRENGTH
CLASSES
CEMENT
Types of cement most currently used in France
CEM I :
CEM II / A :
CEM II / B :
CEM III / A :
CEM III / B :
CEM III / C :
32.5 N or R (normal or quick)
42.5 N or R (normal or quick)
52.5 N or R (normal or quick)
New standard NF EN 197-1 (2001)
for standard cement
≥ 95% clinker + constituents
from 80 to 95% clinker + constituents
from 65 to 79% clinker + constituents
from 35 to 64% clinker + constituents
from 20 to 34% clinker + constituents
from 5 to 19% clinker + constituents
General
Cement
Additions
Aggregates
Water
Admixtures
Fibres

15. Cement
Uses
CEMENT Uses
CEM I Reinforced concrete in general cast in place or prefabricated.
Prestressed concrete.
Quick form removal, quick to put into use (preferably class R)
Concreting down to an outside temperature of between 5 and 10°C.
Steam-cured or self-cured concrete
CEM II / A or B These types of cement are the most frequently used
CEM II/A or B class R: work requiring high initial strength (quick form removal)
Elevated concrete, reinforced or otherwise, for standard structures .
Foundations or underground work in non-aggressive environments.
Slabs, industrial floors.
Masonry:
Stabilising floors.
General
Cement
Additions
Aggregates
Water
Admixtures
Fibres

16. CEM III / A,B or C
CEM IV / A or B Underground work in aggressive environments (gypsum-
containing ground, sewage water, inustrial water, etc)
CEM V / A or B
Work in sulphated environments : the cement types used are all SR,
for work in water with a high sulphate content, in keeping with standard
NV P 15-319.
Work by/in the sea : the cement types used are all ES, cements for works
by the sea, in keeping with standard NV P 15-317.
Mass concrete.
Work with concrete, reinforced or otherwise, hydraulic and underground
(foundations).
Work requiring low hydration heat.
Stabilising floors.
Cement
Uses
CEMENT Uses
General
Cement
Additions
Aggregates
Water
Admixtures
Fibres

17. General
Cement
Additions
Aggregates
Water
Admixtures
Fibres

18. ASTM C150 for Portland cement

19. ASTM C150 for Portland cement

20. What Is Type II cement ?
May be equal 50% Type I +50% Type V

21. What are Cement types permitted to use
in Reinforced concrete work ???
According to ECP 203 -2007

22. When we can use CEM1 instead of Type II
ECP 203