CSA BINDER

※ CSA BINDER is not a cement, some of clients called it csa additive, it`s a pure csa clinker, the precursor to csa based cements. This binder is a hydraulic, cementitious mineral blend, high in C4A3S-(Calcium Sulfo aluminate crystals) compound. Upon mixing with Portland cement and gypsum components, it yields a very early and strong cementitious matrix.

This binder was designed to be blended with Portland cement and anhydrite to make some dry-mixed mortars which need fast setting, rapid hardening, high-strength, freeze resistance, impermeability, corrosion resistance, low pH, low dry shrinkage and micro expansion properties.

This CSA qualities of fast setting and high early strength development are not related to CAC (high alumina cement), even though the Aluminum Oxide content is high. CAC is a refractory cement with a completely different microscopic crystal structure.

When blended with Portland cement, CSA functions as a catalyst in the rapid hardening process or concrete, and the more CSA that is used, the higher the early strength. However, higher replacement dosages will significantly reduce the set time. All csa are inherently fast setting. In order to boost the working time, chemical retarders and accelerator are often used.

This CSA BINDER is specially produced for Dry-mixed mortars and artificial Stone.

※ Chemical Analysis

The chemical analysis of CSA BINDER 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.

※Mineral composition

C=CaO, A=Al2O3, S=SiO2 , F=Fe2O3, S =SO3

−Principal mineral phase: calcium sulphoaluminate C4A3S-

−Secondary phases: C2S, C4AF

Notes: This information is given for reference only.

※Hydraulic Properties

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

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

Mechanical strength at 20℃, 95% relative humidity according to GB20472-2006 .

※Advantages by using CSA BINDER:

·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.

※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 BINDER 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

※Storage:

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