Portland Cement

CSA Cement, also named Calcium Sulpho Aluminate Cement with grade: 42.5, 52.5, 62.5, 72.5, 82.5, 92.5, is a hydraulic binder based on calcium sulpho aluminate, rather than calcium aluminates which are the basis of Calcium Aluminates Cement or calcium silicates which are the basis of Portland Cement.  Properties Incorporation of Calcium Sulpho Aluminated Cement into a variety of mix designs, CSA Cement products  exhibit a range of properties :  

•    Rapid Set 

 •    Adjustable Setting Time  

•    High Early Strength ...

 •    Increased strength in time 

 •    Minimal Shrinkage 

 •    Shrinkage compensation  

•    Expansion 

 •    Sulphate Resistance 

 •    Reduced Alkalinity  

•    Low CO2Emissions  

•    Rheology Adapted to the Application 

 •    etc. .

DATAS Chemical Analysis The chemical analysis of CSA Cement has been determined according to the following: GB/T 176-1996 Methods of chemical analysis for cement  

Main constituents (%)

Fineness Specific Surface Area: according to standard GB/T 8074-2008

Usual range: 400(+/-20) m2/kg, Specification limit: >360 m2/kg; 

Usual range: ≥ 480 m2/kg, Specification limit: >450 m2/kg.

Hydraulic Properties

The characteristics of CSA Cement have been tested in accordance with the Chinese standards: GB20472-2006.

Setting time determined at 20°C, using Vicat needle according to GB/T 1346-2001.

 Mechanical strength at 20°C, 95% relative humidity according to GB20472-2006

 Application Area  

These properties are applied to obtain a wide range of products:

-   Rapid repair mortars

-   Fast setting tile adhesives

-   Fast setting tile grouts

-   Shot-crete / Gun-nite

-   External renders

-   Self smoothing mortars

 -   Self leveling mortars

-   Anchor bolt grouts

-   Non shrinking grouts -  etc.

Use of Additives

CSA Cement may be used in combination with chemical additives such as:

 -  polymers, either in latex form or redispersible powder form

 -  defoamers

-  retarders

-  accelerators

-  plasticizers/superplasticizers

-  rheology modifiers

-  fibers

The characteristics of Portland cement to be considered are:

• C3A content

• Mineral admixture type and content

• Type of Calcium Sulphate used  

Additives will also influence the properties of these mixes:

 • Setting time

• Rheology

 • Mechanical performance

STORAGE

CSA Cement is normally supplied in one-tonne bag which include a moister resistant barrier.However, in common with all hydraulic binders HCSA BINDER must be kept from moisture, and can retain its properties for up to six months when properly stored