CSA BINDER

Synonyms:
CSA BINDER ;ciment de sulfoaluminate de calcium; Liant sulfoaluminate de calcium; Liant CSA; Liant SAC; CSA BİNDER;CSA BINDER ; Liant sulfoaluminate de calcium; Liant CSA; Liant SAC; CSA BİNDER; Le liant CSA; BINDER CSA; Csa; ciment; Calcium Sulfoaluminate Cement, CSA cement; CSA BINDER ; Liant sulfoaluminate de calcium; Liant CSA; Liant SAC; CSA BİNDER; Le liant CSA; BINDER CSA; Csa; ciment; Calcium Sulfoaluminate Cement, CSA cement; CSA BINDER ; Liant sulfoaluminate de calcium; Liant CSA; Liant SAC; CSA BİNDER; Le liant CSA; BINDER CSA; Csa; ciment; Calcium Sulfoaluminate Cement, CSA cement;  Le liant CSA; BINDER CSA; Csa; ciment;CSA BINDER ; Liant sulfoaluminate de calcium; Liant CSA; Liant SAC; ciment de sulfoaluminate de calcium; CSA BİNDER; Le liant CSA; BINDER CSA; Csa; ciment; Calcium Sulfoaluminate Cement, CSA cement;  Calcium Sulfoaluminate Cement, CSA cement; CSA; csa; CSA binder; csa binder; CSAbinder; csaBinder; CsaBinder; liant CSA; Liant; ciment de sulfoaluminate de calcium; CSA

CSA BİNDER
Calcium sulfoaluminate binder
(CSA Binder)
 
 
summary
● Calcium sulfoaluminate powder, also called simply CSA Binder, is one of the hydrulic binders.
● CSA Binder is a kind of semi-finished product for the manufacture of various cements. It is the main composition of quick-setting cement, expansion cement, self-binding cement.
● CSA Binder is also used as an accelerating admixture, fast setting admixture and expansion aid in Portland cement.
● Type: 1 (ordinary type), 2 (high strength type)
 
technical data
Index
Standard value
 Type 1
Type 2
Chemical composition
 
 
SiO2
%,
10.0 max
8.0 Max
Al2O3
%
About 30.0
36.0 Min
Fe2O3
%
1.5 to 3.0
1.5 to 3.0
CaO
%
40.0 to 50.0
38.0 - 45.0
MgO
%
1.0 - 2.5
1.0 - 2.5
SỐ 3
%
7.0 - 10.0
7.0-10.0
Physical performance
 
 
Blaine Surface
Cm2 / g
4000-5500
4500-5500
Initial setting
Minute
about 10-90
about 10 - 90
Final adjustment
Minute
about 15-180
about 15-180
Compressive strength
1d, Mpa
40.0 min
50.0 min
3d Mpa
60.0 min
80.0 min
Tear resistant
1d, Mpa
6.0 min
7.0 min
3d Mpa
7.0 min
9.0 min
Mineral composition
 
Yeelimite (C4A3S)
%
                 50.0-75.0
Belite (C2S)
%
                      0-22.0
Brunmillerite (C4AF)
%
                    0 to 8.0
Perovskite (CT)
%
                      0-10.0
 
 
Characteristics of the CSA Binder
● Appearance: dusty light gray color powder
● High early resistance
● Quick setting
● Micro extension
● Low shrinkage
● Low rust on steel
● Resistance to freezing and thawing
● Impermeability
● Resistance to sulphate attacks
● Specific weight: approximately 2.6-2.8 g / cm³
 
Application of CSA Binder
● As a semi-finished product of various special cements, CSA Binder can be used for making quick-setting cement, expansion cement, self-binding cement.
● Can be used as an admixture for Portland cement, then to improve the physical performance of Portland cement eg acceleration, rapid setting and expansion in construction.
 
Storage, transport and packaging of the CSA Binder
● Store in a dry and cool place and do not mix foreign bodies
● Transport: according to common goods; classification for the means of transport - not compulsory; do not drop or damage packages

CSA Binder is a kind of special building material. One of its basic performance is its high initial strength. It is the main composition of quick-setting cement, expansion cement, self-binding cement. It is also used as an accelerating admixture, fast setting admixture and expansion aid for portland cement during construction. Our CSA binder includes many types or grades

summary
● Calcium sulfoaluminate powder, also called simply CSA Binder, is one of the hydrulic binders.
● CSA Binder is a kind of semi-finished product for the manufacture of various cements. It is the main composition of quick-setting cement, expansion cement, self-binding cement.
● CSA Binder is also used as an accelerating admixture, rapid setting admixture and expansion aid in Portland cement.
● Type: 1 (ordinary type), 2 (high strength type)
 
technical data
Index
Standard value
 Type 1
Type 2
Chemical composition

General characteristics of the CSA Binder
The CSA binder is a hydraulic binder based on calcium sulfoaluminate, rather than calcium aluminates which are the basis of cement calcium aluminates or calcium silicates which are the basis of Portland cement. The difference gives CSA Binder properties particularly suitable for formulators of products such as self-leveling or self-leveling compounds, fast-curing screeds, tile adhesives, non-shrink grouts, fast-setting mortars and specialty mortars.
CSA binder is used in products formulated either as a hydraulic binder alone, with the addition of calcium sulphates or in combination with Portland cement. The setting time is faster than that of Portland cement, and it also has rapid development of strength. CSA BINDER does not release free lime upon hydration and thus eliminates the major cause of efflorescence.
CSA Binder is manufactured under strict quality assurance systems GB / T 19001-2000 (i.e. ISO9001: 2000) and GB / T 24001-1996 (i.e. ISO 14001: 1996) which meets the technical requirements of building chemicals formulators.

CSA Binder properties
Hydraulic properties of CSA Binder
The characteristics of the CSA Binder have been tested in accordance with Chinese standards
standards: GB20472-2006.
Setting time determined at 20 ℃, using the Vicat needle according to GB / T 1346-2001.
Mechanical strength at 20 ℃, 95% relative humidity according to GB20472-2006.

Initial setting time> 10 min End setting time
 al <350 min
Additional information
(This information is provided for guidance only.)
Mineral composition
C = CaO, A = Al2O3, S = SiO2, F = Fe2O3, S = SO3
−Main mineral phase: calcium sulfoaluminate C4 A3 S
−Secondary phases: C2S, C4AF

Reactivity with cement
CSA Binder can be used in combination with other mineral products, for example, Portland cement, calcium sulphates and fillers, or with organic materials such as latex foam or redispersible foam polymers.
Depending on the type of mixture and the technology used, the CSA Binder can be used to achieve and control various properties.
The behavior of Portland cement is variable. In general, the acceleration of setting increases gradually with the addition of CSA Binder. The amount of CSA binder required to achieve a specific setting time varies considerably depending on the origin of the Portland cement and performance may be affected with the use of additives. The development of the strength of the CSA / Portland cement binder and / or calcium sulfates depends on the nature of the Portland cement and / or calcium sulfates used. In general, these mixtures will develop mechanical strength at a very early stage (several hours). With some types of Portland cements and in products formulated with additives that control setting and hydration, the long term properties are similar to the original Portland cement, but it is necessary to verify the behavior of each cement. Portland used.
The characteristics of Portland cement to consider are:
C3A content
Type and content of mineral adjuvant
Type of calcium sulfate used
The additives will also influence the properties of these mixtures:
Setting time
Rheology
Mechanical performance

Chemical analysis data
The chemical analysis of CSA Binder was determined according to the following: GB / T 176-1996 Methods of chemical analysis of cement
Main constituents (%)

Finesse
Specific surface: according to GB / T 8074-2008:
Usual range: 360 ~ 430 m2 / kg, specification limit:> 360 m2 / kg;
Usual range: 450 ~ 500 m2 / kg, specification limit:> 450 m2 / kg.

CSA Binder Applications
These properties are applied to obtain a wide range of products:
Fast setting cements
Fast-hardening mortars
Tile adhesives
Self-leveling compounds
Grout without shrinkage
Water stop mortars
etc.
With a careful selection of constituents (OPC, calcium sulphates, additives), it is possible to create mixtures with a range of different hydraulic properties:
Adjustable setting time
Rheology adapted to the application
High early resistance
High long term strength
Withdrawal compensation

Use of additives
CSA Binder can be used in combination with chemical additives such as:
polymers, either in latex form or in redispersible powder form
Defoamer
Speed ​​bumps
Accelerators
Plasticizers / superplasticizers
Rheology modifiers
Fibers, etc.

Calcium sulfoaluminate (CSA) cements are receiving increasing attention because their manufacture produces much less CO2 than usual
Portland cement (OPC) [1–5]. In addition, they exhibit interesting properties such as high strengths at young age [6–8], short setting times, impermeability [9,10], corrosion resistance to sulphates and chlorides and low alkalinity. .
The main uses of these CSA cements, or mixed with Portland cements,
are for quick repairs and prefabricated products or concrete floor applications
[11]. All these properties are linked to the hydration phases resulting from
the first hours of hydration. Early hydration of CSA cements [12,13] gives
ettringite also called AFt (C6AS3H32), and monosulfate also called
AFm (C4ASH12) [14], as the main crystal phases, depending mainly on
the availability of sulfate. CSA binders can have varying compositions, but
all contain ye'elimite, also called Klein's salt or tetracalcium
trialuminate sulfate (C4A3S) [1.15]. The Ye'elimite synthesis only produces
one third of the CO2 released by the production of alite content in
OPC [16]. In addition, its clinkage temperature (~ 1250 ° C) is lower
than that of OPC clinkers, there are therefore environmental benefits due to fuel savings. Clinkers containing Ye'elimite are easier to be
crushed as OPC clinkers, and industrial waste or by-products can be used in furnace feed as raw material.
Another environmental strategy to reduce the negative impact of
the cement industry is the partial substitution of cement by by-products
materials (such as fly ash or s slag) also called
cementitious materials (SCM) [17–19]. The environmental benefits of
the use of waste is double, less CO2 emissions because
the reduction of clinker, and the recovery of a “useless” product.
In addition, the addition of SCM to the cement can give the possibility
modification of their properties [20] and mortars / concretes
prepared from mixtures, such as reduced heat of hydration, improved
workability of the mortar / fresh concrete mixture, improved chemical resistance, increased ultimate strength and improved other technical properties of concrete [21]. However, the extent of replacement is
limited by the following problems: early resistance reduced, limited
quantities of reactive SCMs and limited replacement by non-reactive products
SCM without compromising final strength. In all cases, it is essential
to control / understand the hydration process [14,22,23] without or
with SCMs. The effect of adding by-products to OPC pastes has
already well described in the literature [24,25]. However, for CSA
cements, it is necessary to understand all the parameters involved in the
Hydration of CSA-SCMs and the key roles of water and SCM content.
The w / c ratio required for full CSA hydration is greater than that of a
OPC [26]. The specific water demand for complete hydration will depend on the assembly of the CSA phase (mainly the content of eliminates and belite).
For example, the pure ye'elimite reacting with the stoichiometric amount of
the anhydrite to give ettringite requires a mass ratio of 0.78 w / v [14,27]. This
means that a CSA with ~ 50% by weight of the volume limit would need a w / CSA ratio
0.5, which can result in pastes with larger pore diameters than OPC
pasta. In addition, high w / c ratios can imply a large expansion [28]
also resulting in poor final strengths; however, lower initial particle
sizes or the use of additives may reduce some of these
Properties

The objective of this work is to study the hydration and the properties of
CSA-FA mixed cement pastes, including evolution of phase assembly
with hydration time, workability of doughs at very early ages and porosity. Finally, the mechanical properties of the corresponding mortars
have been correlated with these variables and the role of AF addition has
been discussed. The results of this study may also be of interest to understand other cements containing eliminates such as sulfobelite cements.

4. Calcium sulfoaluminate (CSA) cement is produced by burning the appropriate raw component
materials, obtaining hot materials which mainly contain the mineral C4A3S and C2S, addition of plaster and additives and grinding of clinker. CAS number: 12004-14-7. the
the main ingredients are:
Silicon dioxide [SiO2] 11% max
Aluminum oxide [A12O3] 28-34%
Iron oxide [Fe2O3] 2-3%
Calcium oxide [CaO] 40-44%
Magnesium oxide [MgO] 1-3%
Titanium dioxide [TiO2] 1-3%
Sulfur trioxide [SO3] 7-10%

Reactivity with cement
CSA Binder can be used in combination with other mineral products, for example, Portland cement, calcium sulphates and fillers, or with organic materials such as latex foam or redispersible foam polymers.
Depending on the type of mixture and the technology used, the CSA Binder can be used to achieve and control various properties.
The behavior of Portland cement is variable. In general, the acceleration of setting increases gradually with the addition of CSA Binder. The amount of CSA binder required to achieve a specific setting time varies considerably depending on the origin of the Portland cement and performance may be affected with the use of additives. The development of the strength of the CSA / Portland cement binder and / or calcium sulfates depends on the nature of the Portland cement and / or calcium sulfates used. In general, these mixtures will develop mechanical strength at a very early stage (several hours). With some types of Portland cements and in products formulated with additives that control setting and hydration, the long term properties are similar to the original Portland cement, but it is necessary to verify the behavior of each cement.