Decorative, Expansive, Sulfate Resistant, Fast Setting, High Early Strength, Micro Expansive
Main Raw Material:
Heat of Hydration:
Marine Engineering project that need good sulfate resistant
Initial Set time:
Final Set time:
Used as fast setting accelerator and high early strength admixture
8-12% by weight of Portland cement
Packaging & Delivery
Sulfate Resistant Cement CSA Cement
Normal package:25kg package (45*71cm)and 1mt package(115*115cm), 1.25mt(115*150cm)
Special package: According to the customers' prefer, usually in 1mt~1.3mt package
Volume-weight: 20mt~26mt in 20GP except for special port
Pallet Size: 1.1m*1.1m
within 20 days
Sulfate Resistant Cement CSA Cement
CSA cement is a hydraulic binder based on calcium sulphoaluminate, rather than calcium aluminates which are the basis of CALCIUM ALUMINATE CEMENT or calcium silicates which are the basis of PORTLAND CEMENT. The difference gives CSA BINDER properties particularly suited to formulators of products such as self-leveling or self-smoothing compounds, rapid hardening screeds, tile adhesives, non-shrink grouts, rapid setting and special mortars.
CSA cement is used in formulated products either as a hydraulic binder by itself or with the addition of calcium sulphates, or in combination with PORTLAND cement. The setting time is quicker than that of PORTLAND cement, and it also has a rapid strength development. CSA BINDER does not release free lime during hydration thus eliminates the major cause of efflorescence.
CSA cement is manufactured under a strict quality assurance systems GB/T 19001-2000 (i.e. ISO9001:2000) and GB/T 24001-1996 (i.e. ISO 14001:1996)) which accommodates the technical requirements of building chemistry formulators.
The properties of CSA cement conform to the standards of the manufacturer and to the
Chinese relevant standards.
Specific Surface Area: according to standard GB/T 8074-1987
Usual range: 360~430 m2/kg
Specification limit: >360 m2/kg
The characteristics of CSA cement have been tested in accordance with the Chinese standards.
l Setting time determined at 20 using Vicat needle, according to GB/T 1346-2001
l Mechanical strength at 20 , 95% relative humidity.
Mortar according to JC933-2003
C=CaO A=Al2O3 S=SiO2 F=Fe2O3S= SO3
- Pricipal mineral phase: calcium sulphoaluminate C4 A3S
- Secondary phases: C2S, C4AF
Reactivity with Portland cement
CSA cement may be used in combination with other mineral products, for example
PORTLAND cement, calcium sulphates and fillers, or with organics such as polymers in latex form or in redispersible form.
Depending on the type of mixes and technology employed, CSA cement can be used to obtain and control various properties.
The behaviour of PORTLAND cement is vary variable. In general, acceleration of set increases progressly with the addition of CSA cement. The amount of CSA cement needed to obtain a specific setting time varies considerably depending on the origin of the PORTLAND cement and performance can be modified with the use of additives.
The strength development of CSA cement/PORTLAND cement and/or Calcium Sulphates depend on the nature of the PORTLAND cement and/or Calcium Sulphates used. In general these mixes will develop mechanical strength at a very early stage (several hours). With some type of PORTLAND cements and in formulated products containing additives which control the setting and hydration, the long term properties is similar to those of the original PORTLAND cement, however it is necessary to check the behaviour of each PORTLAND cement used.
The characteristics of PORTLAND cement to be considered are:
l C3A content
l Mineral admixture type and content
l Type of Calcium Sulphate used
Additives will also influence the properties of these mixes:
l Setting time
l Mechanical performance
These properties are applied to obtain a wide range of products:
l Fast setting cements
l Rapid hardening mortars
l Tile adhesives
l Self-leveling compounds
l Non-shrink grouts
l Water stopping mortars
With a careful selection of the constituents (OPC, calcium sulphates, additives), it is possible to create mixes with a range of different hydraulic properties:
l Adjustable setting time
l Rheology adapted to the application
l High early strength
l High long term strength
l Shrinkage compensation
Use of Additives
CSA cement may be used in combination with chemical additives such as:
l polymers, either in latex form or redispersible powder form
l rheology modifiers
Package and Store
CSA cement is normally supplied in one-tonne bag which include a moister resistant barrier. However, in common with all hydraulic binders CSA cement must be kept from moisture, and can retain its properties for up to six months when properly stored.