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Version 01/12/2009
JK-01NP High Range Water Reducing Concrete Admixture (High Concentration)
Superplasticizer ASTM C494, Type F
Sodium Naphthalene Sulfonate Formaldehyde (Na2SO4≤5%)
CAS NO.: 36290-04-7
De
JK-01NP is a high range water reducer, high concentration naphthalene-based
superplasticizer, also named Naphthalene Sulfonate Formaldehyde Condensate (NSF), SNF, PNS and FDN etc.
JK-01NP (Na2SO4≤5%) contains no chloride, non-corrosive to steel bars, non
poisonous, odorless, and non-flammable. Thus, it meets the requirements of chemical
admixture specifications for concrete: comply with ASTM C 494, Type F. ASTM C 1017,
GB8076-2008 and GB50119-2003 etc.
Uses
JK-01NP possesses the features of no retarding, no air-introducing, superplastic high
water-reducing and strength enhancing. It has no chloride,low alkali content,low
sulphonate, and high purity. It can be widely used in different concretes with less dosage and easy to use.
JK-01NP can be applied to make flowing, strong or steam curing concrete. The
minimum working temperature can be as low as 0℃degrees. In steam curing,
concrete with superplasticizer has to be strong enough before heating. The steam
curing specification has to be pre-tested. It is particularly used as base material
for compound admixtures.
It can prevent from the alkali-aggregate reaction because of the biggish alkali
reactivity of aggregate or the alkali-aggregate reaction in the moist environment.
Advantage
1. High water-reducing rate: JK-01NP can reduce water 20-30%. It has features of superplasticizer, effectively increases concrete fluidity and reduces water penetration and segregation and improves the encapsulation force of the concrete with reinforcing steel bar.
2. Strengthening: Given the same amount of cement and slump requirement, this product with the dosage 0.5-1.2% can increase the concrete early strength and reinforced effect by 50-100%, 40-70%, 25-60% and 20-60% on day 1, 3, 7, and 28 respectively.
3. High applicability: It can be used with different variety of cement. It is compatible with other admixtures.
4. Low sodium Sulfate content: The aqueous solution has no crystals in winter, which can avoid pipeline congestions when JK-01 NP applied. It is suitable for automatic working.
5. Effective durability: It can modify the structure of concrete and increase the property of anti-seepage, anti-freezing, and carbonization.
6. Easy to use: It can be added directly or used after dissolved in water. It can be used for different working condition and concrete mixer.
Specifications
|
Items |
Criteria |
Actual results(C×0.75%) |
|
Appearance |
-- |
Light brown powder |
|
Solid Content % |
92 min |
92.65 |
|
Moisture % |
8.0 max |
7.35 |
|
Fineness (0.315mm remains) % |
15.0 max |
9.2 |
|
PH value |
7 - 9 |
8.5 |
|
Sodium Sulfate Content % |
5.0 max |
3.8 |
|
Chloride Content % |
1.0 max |
0.11 |
|
Surface Tension |
68-72 Mn/m |
71 |
|
Cement Flowing Rate |
240mm |
265mm |
|
Water Reducing Rate |
20% min |
22.3% |
|
Steel-bar Corrosion |
None |
None |
Dosage
0.5-1.2% by weight of cement. Exact dosage rates are dependent 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-01NP 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 result.
Test Data Sheet
|
Items |
Dosage rate (Cx%) |
Water (g) |
Slump (mm) |
Water reducing rate (%) |
Compressive strength (MPa) /Compressive strength rate (%) |
|||
|
1 day |
3 days |
7 days |
28 days |
|||||
|
Reference concrete |
0 |
2555 |
82 |
0 |
4.34/100 |
13.70/100 |
20.19/100 |
24.06/100 |
|
JK-01NP |
0.75 |
1986 |
89 |
22.3 |
7.63/173.3 |
23.85/173.4 |
30.84/150.7 |
33.72/137.2 |
Package, Storage & Shelf Life
For powder: Woven plastic bag with film liner. Net weight: 25kg +/- 0.2 kg.
It should be stored in a dedicated warehouse that is well-ventilated and dry and
keep away from moisture.
Shelf Life: Minimum 12 months. After the expiration date, it can be used if testing results is qualified.