Sulfamate Superplasticizer (finished product)Set-retarding AJ-R
The product is made of amino aryl sulfonic acid - phenol - formaldehyde condensates and certain amount of retarder components. This product has characteristics of low dosage, high water reducing rate, low slump loss, striking enhancement effect and good cement adaptability. It can be used for preparing concrete with strength grade up to C80, high fluidity concrete with slump of more than 200mm or self compacting concrete.
Major Technical Features
1. The product is liquid in form and brown in color. The regularsolid content is 30%, and can be prepared according to user’s requirement.
2. Stable chemical properties, no precipitation of water, and no crystallization in winter. After long resting (more than one week), it should be stirred even before use.
3. Fluidity of cement paste≥240mm (when dosage of the water agent is 2%).
4. Low dosage: the regular dosage of water agent is 1.5% to 2.5% of weight of cement material.
5. High performance of reducing water. When the dosage of water agent is 2.0%, the water reducing rate can reach 25%; it can also be used for preparing C80 high performance concrete, fluid concrete with slump loss larger than 200mm and vibration-free self-compacting concrete, saving 15% to 20% of cement.
6. The setting time is generally controlled to the range 15±5h. It can be prepared according to the user’s requirement.
7. 25～48h super-set-retarding products are available.
8. With small concrete slump loss, it is conspicuously effective in inhibiting concrete slump loss and applicable to various kinds of cement.
9. The compressive resistance ratio of concrete at different stages is higher than the requirement “set-retarding type of high performance water reducer” in GB8076-2008.
10. Small concrete shrinkage, which can reduce the cracking of concrete.
11. It causes no corrosion to iron in concrete.
1. It can be used for preparing liquid concrete with slump loss of more than 200mm, ready mixed concrete or pumped concrete.
2. It can be used for the preparation of high performance concrete with strength≤C100.
3. It can be used for vibration-free self compacting concrete for special engineering.
4. It can be used for concrete engineering of skyscraper, road, bridge, tunnel, irrigation works, wharf, port etc.
Use and Cautions
1. The regulardosage of the liquid (30% concentration) is 1.5%~2.5% of the weight of cement material. The specific dosage is determined according to the grade of concrete strength after test.
2. The dosage accuracy error of admixture shall not be greater than 1.0%.
3. The product is packed in bucket, 50kg or 200kg per bucket, or transported by tank car. In transportation and storage, attention shall be paid to rainproofing, waterproofing and dampproofing.
4. The shelf life of the product is 3 months; expired products should be tested before use
5. 5. When this product is mixed with concrete, the stirring time should be 30 to 60 seconds longer than regular concrete.
6. This product cannot be mixed with polycarboxylate superplasticizer
7. The product should be subjected to concrete performance test before use.
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