sodium naphthalene sulfonate formaldehyde concrete admixture

1 High range water reducing concrete admixtures 2 High effective water reducing rate: more than 18% 3 High strengths

Description

JK-02NP is a naphthalene-based highly effective water reducing admixtures for promoting accelerated early and ultimate strength development, commonly referred to as a superplasticizer, also named Naphthalene Sulfonate Formaldehyde Condensate (NSF), SNF, PNS and FDN etc.

JK-02NP contains no chloride, non-corrosive to steel bars, non-poisonous, odorless, and non-flammable. It complies with ASTM Designation C494, Type F, ASTM C 1017, GB8076-2008 and GB50119-2003 etc.

Advantages

Substantial improvement in workability without increased water or the risk of segregation. Normal set without retardation, even when overdosed. Improved density and surface finish.High water reducing rate. 40% increase in 28 day strengths. High strengths after 8 hours.Compatible with Portland cement, Normal Portland cement, Portland Slag Cement, Flyash Cement,  Pozzolanic Cement, etc.Improve workability (slump) of concrete when added into mixing truck.

Specifications

Items	Criteria	Actual results(C×0.75%)
Appearance	--	Light brown powder
Solid Content %	92 min	92.55
Moisture %	8.0 max	7.45
Fineness (0.315mm remains) %	15.0 max	9
PH value	7 - 9	7.8
Sodium Sulfate Content %	18.0 max	16.60
Chloride Content %	1.0 max	0.21
Surface Tension	68-72 Mn/m	70
Cement Flowing Rate	230mm	240mm
Water Reducing Rate	18% min	20%
Steel-bar Corrosion	None	None

Dosage 0.5 – 1.5% by weight of cement. Exact dosage rates depends on the type of effect sought, quality of cement and aggregates, water/cement ratio and ambient temperature. Therefore, in many cases it is advisable to carry out trial mixes. JK-02NP can be added directly or added in after dissolved in water. It can be added during mixing and after-mixing (better). The after-mixing approach can achieve better results. 

sodium naphthalene sulfonate formaldehyde concrete admixture