Formaldehyde-2-naphthalenesulfonic acid copolymer sodium salt

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Product Description:

Quick Details

  • Place of Origin:China (Mainland)

  • Model Number:FDN

  • Sodium sulphate::5%/10%/18% max

Packaging & Delivery

Packaging Details:25kg or 40kg or 750kg or as request
Delivery Detail:7 days after order confirmed

Specifications

Mainly used for formulating concrete superplasticizer, high high-strength concrete, steel concrete, prestressed concrete

Sodium Naphthalene Formaldehyde (SNF-Superplasticizer for Concrete)


Product Description

A Highly effective super plasticizer with a set retarding effect for producing free flowing concrete. Also a substantial water reducing agent for promoting high early and ultimate strengths.


Basic information:
1) Chemical name:Sodium Salt of Polynaphthalene Sulfonic Acid
2) CAS number:36290-04-7
3) Standard: GB 8076-2008

Specification (3 series):
Appearance: Light Brown Powder
Solid content:92.0% min
Sodium sulphate: A 5%/ B 10%/ C 20% max

Chloride content: A 0.3% B 0.4% C 0.5% max
pH value:7-8
Surface tension:68-72 n/m
Cement flowing rate: A 250 B 240 C 230mm min
Concrete reducing water rate:20% min

Save cement rate: over 18%
Steel-bar corrosion: None

Performance indexes of concrete mixed with FDN (Note: standard blend dosage: 75x10 -2 % powder)

Parameters

Standard GB8076-2008

FDN-A

FDN-B

FDN-C

Water Reduction Min %

14

18-28

17-25

16-22

Water Penetration Max %

90

79

80

85

Air Content Max %

3

2

2

2

Temporal distribution for setting(min)

Initial Setting Time

-90~+120

-90~+120

-90~+120

-90~+120

Final Setting Time

Compression Strength %

1d

140

170

165

160

3d

130

160

155

150

7d

125

145

140

140

28d

120

135

130

125

Shrinkage

90d

135

82

85

88

Corrosion to Steel Bars

None

None

None

None



Application

Mainly used for formulating concrete super plasticizer, high high-strength concrete, steel concrete, prestressed concrete, large formwork concrete, slip forming concrete etc, as a water reducing agent. Compatible with all types of Portland Cement.

Dispensing

Can be added separately to the freshly mixed concrete or directly to the mixing water prior to its addition to the aggregates.



Dosage

0.5-1.0% by weight of cement. Suggested is 0.75% by weight of cement.

Exact dosage rates are dependent on the type of effect of sought, quality of cement & aggregates, Water/Cement-ratio and ambient temperature. Therefore, it is advisable to carry out trial mixes.


Storage

Store in dry conditions, protected from direct sunlight and frost.

Shelf Life

24 months from date of production if stored properly in undamaged and unopened original sealed packing.

Toxicity

Non-toxic under relevant health and safety codes.

Packing:
25kg or 40kg or 750kg or as request.

Note

When this product is used for the first time or cement variety is changed, concrete trial preparation shall be conducted according to the adopted materials and construction requirements in the field. Construction mixing rate shall be adjusted based on testing result to serve as instruction for construction blending.

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