how can you choice cement type

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

[email protected] 01222202289 privetTel 01224006892 company

mailto:[email protected]

2

THE “QUALITY” ZED AND THE COST OF

QUALITYBOQ RATE FOR WHAT WE DO

COST PROFIT

ZeroDefects

If an error is made,The COST to produceA correct product is:1 + 1 ¼ + 1 = 3 ¼WHAT ABOUT OUR

PROFIT???

1

1

1 ¼

Concrete Materials

3

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

Portland, Blended, and Other Hydraulic Cements

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

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 ,…)

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

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


other than


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


General

Cement

Additions

Aggregates

Water

Admixtures

Fibres

Cement

Example of naming


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


other than


A: from 6 to 20%

B: from 21 to 35 %

C: from 36 to 65 %

(slag for EM III)


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


General

Cement

Additions

Aggregates

Water

Admixtures

Fibres

Cement

Example of naming


Cement family







other than


A: from 6 to 20%

B: from 21 to 35 %

C: from 36 to 65 %

(slag for EM III)


2 main constituents

other than clinker


S: aggregated slag from blast furnaces


W: calcic fly ash


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


General

Cement

Additions

Aggregates

Water

Admixtures

Fibres

Cement

Example of naming

CEM II / B - M (S-V) 42,5N PM-ES-CP2*

Cement family







other than


A: from 6 to 20%

B: from 21 to 35 %

C: from 36 to 65 %

(slag for EM III)


2 main constituents

other than clinker




W: calcic fly ash


of organic carbon)

D: silica fume


T: Pre-fired shale



32.5 or 42.5 or 52.5

strength sub-classes (minimum characteristic strength

after 2 days, expressed in MPa).

N: Normal

R: Quick


General

Cement

Additions

Aggregates

Water

Admixtures

Fibres

Cement

Example of naming


Cement family







other than


A: from 6 to 20%

B: from 21 to 35 %

C: from 36 to 65 %

(slag for EM III)


2 main constituents

other than clinker




W: calcic fly ash


of organic carbon)

D: silica fume


T: Pre-fired shale



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

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)



New standard NF EN 197-1 (2001)

for standard cement

≥ 95% clinker + constituents

from 80 to 95% clinker + constituents





General

Cement

Additions

Aggregates

Water

Admixtures

Fibres

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

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

General

Cement

Additions

Aggregates

Water

Admixtures

Fibres

ASTM C150 for Portland cement

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

What are Cement types permitted to use in Reinforced concrete work ???

According to ECP 203 -2007

When we can use CEM1 instead of Type II

ECP 203

how can you choice cement type

Engineering