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Sodium naphthalene sulphonate formaldehyde

Naphthalene formaldehyde sulphonate water reducing agent is a synthetic powder based onbeta-sulphonate formaldehyde ondensate and reactive polymer.

Quantity:
  • elite-indus
  • 382440100
  • Light brown powder
  • ≥92
  • 5%
  • PH Value
  • ≥250 mm
  • 70±1×10-3N/M
               Sodium naphthalene sulphonate formaldehyde
 
                                                           ----Elt-nsf
 
1.Introduction
Naphthalene formaldehyde sulphonate water reducing agent is a synthetic powder based onbeta-sulphonate 
formaldehyde ondensate and reactive polymer.It has the properties of high range water reduction, 
set retarding and excellent strengthening.Elt-nsf sodium sulfate is less than 10% , suitable to middle strength or high strength concrete where high range water reduction is desired.

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2.Parameters&accepttance criteria
INDEXITEM Elt-A Elt-B Elt-C
Appearance Light brown powder Light brown powder Light brown powder
Solid Content ≥92 ≥92 ≥92
Sodium sulphate Content 5% 10% 20%
Chloride Content 0.3% 0.4% 0.5%
PH  Value 7-9 7-9 7-9
Net Starch Fluidity ≥250 mm ≥240 mm ≥230 mm
Surface Tension 70±1×10-3N/M 70±1×10-3N/M 70±1×10-3N/M
Parameters&accepttance criteria(For reference)
Parameters Criteria Actual Results Parammeters Criteria Actual Results
Water reduction,Min % ≥14 18-28 Compression strength,% 1d ≥140 170
Water Penetration,Max % ≤90 79 3d ≥130 160
Air Content,% ≤3.0 1.6 7d ≥125 145
Temporal distribution for setting(min) Initial setting time -90 ~ +120  
-90 ~ +120
28d ≥120 135
Terminal setting time Shrinkage,%  
28d
 
≤135
 
82
Corrosion to steel bars None None
Note:Standard Blend Dosage:0.75%(as cement amount)
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3.USAGE:
A. Blending dosage at 0.5%-1.0%, 0.6% mixing dosage advised.
B. Prepare solutions as required.
C. Direct use of powder agent is allowed. Alternatively the addition of the agent is followed by water moisturization (water-cement ratio:60%).
4.Application
A. Used for and widely for self-cured, vapor-cured concrete and its formulations. At the early stage of application, extremely prominent effects are shown. As the result, the modulus and site utilization can be drastically, the procedure of vapor cure is omitted in peak-heat summer days. Statistically 40-60 metric tons of coal will be  preserved when a metric ton of the material is consumed.
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B.Suitable for preparation of early-strength, high- strength, high-anti-filtration and self-sealing& pumpable concrete.
C.Widely used in pre-cast & ready-mixed concrete, armored concrete and pre-stressed reinforced concrete 
in key construction projects such as dam and port construction, road building & town planning projects and dwelling erections etc.
D.Compatible with Portland cement, normal Portland cement, Portland slag cement, fly-ash cement and Portland pozzolanic cement etc. 
 

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