本产品为β萘磺酸钠甲醛缩合物，易溶于水，物理化学性能稳定、效果好，是一种高性能减水剂。具有高分散性、低起泡性的特点，减水率高，强度、早强、增强优越,对水泥适应性强。掺入本品大大增强混凝土流动性，提高塌落度，改善和易性和施工性能。

本品对钢筋无锈蚀。广泛用于各混凝土工程，构件预制、轨枕、桥梁、隧道、国防军事工程、水利电力工程、港口码头、飞机跑道、高层建筑工程等。

（一） 主要技术性能：

1. 本品符合混凝土外加剂GB8076-2008国家一等品标准。

2. 掺量为水泥用量的0.5%-1%，减水率为17-25%；早强明显，一天、三天强度提高60%-95%，二十八天强度提高25%-50%，长期强度仍有提高。

3. 在相同水灰比情况下，掺入FDN-B（0.75%）比不掺入塌落度提高4-7倍，仍保有可塑性。

4. 当混凝土的强度、塌落度基本相同时，掺入FDN-B，可节省水泥15%-18%。

5. 改善和易性和混凝土构件的各项力学，结构性能，提高和易性、抗渗性、耐久性，并具有一定抗冻性。

6. FDN-B应用范围广，特别适应配制高效、超高强混凝土；蒸养混凝土、流态混凝土、抗渗混凝土、防水混凝土、塑化混凝土、钢筋和预应力钢筋混凝土等方面。

（二）匀质性指标：

（三）主要性能技术指标 (掺量：C×0.75％)

（四）使用说明：

1. 本产品掺和量一般为0.5%-1.0%，推荐掺量0.75%。

2. 本产品可配成溶液使用，也可用干掺法。

3. 搅拌型混凝土运输车，也可施工时再掺入。

请用户注意：在初次使用本产品或更换水泥品种时，要根据工程具体情况和要求，做必要的混凝土实验。在施工过程中，注意FDN-B掺加实际表现，总结实用经验效果做出调整，以求得最佳效果。蒸汽养护时亦应确定合理的养护条件和制度。

（五） 包装与储存
1. 粉剂产品采用化纤织袋，内衬塑料薄膜袋，每袋净重（40±0.2kg）或（25±0.2kg）或（750±2kg），也可根据客户要求定制。

2. 粉剂产品应贮存在干燥通风的专用仓库内，产品如受潮结块可以粉碎或者溶成水剂使用不会影响实用效果。

l FDN-B  HIGH-EFFICIENCY SUPERPLASTICIZER

（I） .APPLICATION

1. 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.

2. Suitable for preparation of early-strength, high-strength, high-anti-filtration and self-sealing& pumpable concrete.

3. 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.

4. Compatible with Portland cement, normal Portland cement, Portland slag cement, fly-ash cement and Portland pozzolanic cement etc. 

（II）.PROPERTIES, FEATURES & CHARACTERISTICS（FDN-B）
　　 1. Appearance: Light brown powder& dark brown liquid. Non-poisonous, odorless, non-flammable and non-corrosive to steel bars.
　　 2. Remarkable Plasticity: As a condition of blending where amount of cement and collapsibility are fixed aforehand, mixing water can be decreased by 17-25% when it is admixed with reinforced concrete at 0.5-1.0%. Statistically, compression strength on the lst day, the 3 rd day and the 28 th day after single application is increased by 60-95% and 25-50% respectively when it is added at standard blend dosage. As the result, compression strength, tensile strength, buckling strength and modulus of elasticity will be improved to some extent.
　　 3. Improve miscibility of concrete amalgamator with water and collapsibility as well. As a condition of equivalent blending, collapsibility can be increased 4-7 times when it is added at 0.75% blend dosage.
　　 4. 15-18% of cement can be reserved when the agent is blended at 0.75% blend dosage, which is preconditioned by same collapsibility and strength.

（III）.PARAMETERS & ACCEPTANCE CRITERIA （FDN-B）

 (IV). PARAMETERS & ACCEPTANCE CRITERIA （FDN-B  FOR REFERENCE ）

(V).USAGE:

1.Blending dosage at 0.5%-1.0%, 0.75% mixing dosage advised.

2.Prepare solutions as required.
　　 3. Direct use of powder agent is allowed. Alternatively the addition of the agent is followed by water moisturization (water-cement ratio:60%).
　　 4. The agent can be combined with other externally applied agents if pilot development or laboratory experiment succeeds.

 (VI)PACKING,STORAGE AND TRANSPORTATION

1. Package:
Powder: packing in Woven fabric bag with plastic inner. Net weight: 25kg ± 0.2 kg or 50 kg ± 0.2 kg or 750 kg ±2kg

2. Cautions:
Prevented from being torn by sharp-ended objects while packages are being transferred or delivered. When being contaminated by high humidity or moisture in case of leakage, it can be prepared in prescribed ways for further use without surrendering any effect.

3. It should be stored in a dedicated warehouse that is well-ventilated and dry.If be affected with damp,just smash or melt it into solution without any bad effection.