Description
YL-SNF-A is a high range water reducer, high concentration naphthalene-based superplasticizer, also named Naphthalene Sulfonate Formaldehyde Condensate , SNF, PNS and FDN etc.
YL-SNF-A (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, complying with ASTM C 494, Type F. ASTM C 1017, GB8076-2008 and GB50119-2003 etc.
Uses
1. YL-SNF-A 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.
2. YL-SNF-A can be applied to make flowing, strong or steam-curing concrete. The minimum working temperature can be as low as zero centigrade degree. 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.
3. 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: YL-SNF-A 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 YL-SNF-A 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 | -- | 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 depend 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.
YL-SNF-A 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 |
| YL-SNF-A | 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.
Far East YU LA INDUSTRY LIMITED, subjecting to the Far East Group, was founded in 2003, which is a concrete admixture manufacturer in China with over 10 years, a member of Chinese Concrete Admixture Association, the top ten enterprises in China, the product already certified by ISO 9001 and CRCC, well-known and class AAA model enterprise in building material industry and China ratepaying credit grade A company.
The company specializes in concrete admixtures field which contains R&D, manufacturing, distribution and providing technical service. Its main products are Naphthalene-based, Polycarboxylate-based Superplasticizer, Sodium Gluconate, Polycarboxylate production raw materials and other compound admixtures. The company now has annual production lines of 300, 000 tons of Naphthalene-based Superplasticizer and 100, 000 tons of Polycarboxylate-based Superplasticizer.
The company has a strong group with powerful technical development, including 5 professor senior engineers, 21 special technical consultants and engineers equipped the specialized laboratory and perfect examination system. It can provide the technical support and the best product service for the user. It has been successfully distributed to over 20 countries and regions. The company has won good reputation and high praise in quality from domestic and oversea customers.
To pursue the best quality and provide the best service has always been our philosophy. Over the years, we devote to increase the promotion of concrete admixture technology and help customers to improve the quality of concrete projects. After years of development, YU LA will continue to move forward to become the industry benchmark of concrete admixture.
With the remarkable performance product, the powerful technical support and the perfect after service, in basing the mutual beneficial principle, YU LA hopes the global cooperation with all respectful clients.
Contact Information:
Far East YU LA INDUSTRY LIMITED
ADD: No. 202, #2 Bldg, Yangguang Mansion, #2591 Hunan Rd, Pudong District, Shanghai, China. Zip code: 201315
TEL: 021-65830378
FAX: 021-65830091
