“DISPERSWELL-CM”
(Dispersing agent for Cement)


INTRODUCTION:
 

Although water is needed in the hydration reaction of cement (q.v.), excess water added for workability of the concrete and mortar creates voids that decrease strength and increase water permeability.  Plasticizers are used in cements to cut water demand by 2-4% and decrease void volume.  More recently, dispersant so-called superplaticizers have been formulated being consumed which can reduce water demand by about 15-20% and more as per the application.  This results in much higher early strength and less water permeability in the concrete.   Super plasticizers functions by absorbing on the surf  of alite (tricalcium silicate, the principal constituent of Portland cement.)  This adsorption increased the charge repulsion of the particles allowing less water to be used while maintaining low slurry viscosity i.e  (increased workability).  Reportedly, super plasticizers retard the hydration of alite by limiting its interaction with water molecules and minimizing the dissolution of calcium ions that normally further react as the cement cures.

The two main classes of super plasticizers are melamine-formaldehyde condensates and naphthalene sulfonate condensates.  Newer Superplaticizer “DISPERSWELL-CM” derived from Ammonium neutralize Carboxylic Acid based polymer requires lower dosage for earlier type available product.  “DISPERSWELL-CM” is an aqueous solution of chemical dispersants with remarkable dispersing and fluidifying action giving optimum dispersion of the cement particles. The dispersing action produces a dramatic increase in workability, sufficient to achieve a free -flowing properties, improves water tightness reduces shrinkage; increase compressive strength due to reduced water cement ratio.

TECHINICAL PROPERTIES:

                                  
PROCEDURE FOR DOSAGE RECOMENDATION : 

The deflocculating   action of  a dispersant on a mixture of  pigments may be determined by a fluidity-titration method.  This method of determining despersant demand involves mixing 50 grams of pigment or aggregate with sufficient water so that a stiff, slightly moist mass forms.  The dispersing agent, as a 10/50% solution in water, is then added in small increments with thorough mixing.  When the pigment mass becomes fluid enough so that surface ripples disappears on gentle shaking of the container, the pigment is deflocculated.  In conducting this test, you will soon discover that each system and each pigment within each system has a different dispersant demand.

Field of Application:

     Þ  Large concrete pours, R.C.C  walls, columns,& beams etc
Þ  Heavily reinforced concrete and floor slabs.
Þ  Bridges, cantilever structures, High strength grouts.
Þ   Spun cement pipes, poles, tiles, bricks, sheets, railway sleeper, etc.
Þ  Precast/Prestressed concrete for high, early & ultimate strength and  quick demolding.
 

Note :  ONLY FOR TWO LAYER PAVERS BLOCKS.

Dosage :  TOP LAYER :         [ Pigmented in different shades  ]      400 gsms / one bag of cement

                      BOTTOM LAYER :  [ UnPigmented 50-60 mm Layer ]      400 gsms / one bag of cement

The dosage can be adjusted as per the desired required quality at your end.