Naphthalene water reducer

PRODUCTS

Naphthalene water reducer

1.Product General

JY-2202 Superplasticizer is a dry powdered admixture. It is produced through such a process:

Sulphonating refined naphthalene with sulfuric acid;
Condensing with formaldehyde;
Neutralization;
Filtering.

It conforms to GB8076-1997 and is mainly used for various high-strength concrete, steel concrete, prestressed concrete, large formwork concrete, slipforming concrete etc.

2.Standard Quality Targets:

Item	Target	Item	Target
Appearance	Brownish powder	PH Value	7～9
Solid content	≥91％	Neat cement Grout flowability	≥250 mm
Na2SO4	＜5%,10%,18%	fineness	0.315mm Mesh<15％
Chloride	＜0.3%	Surface Tension	（70±1）×10-3N/m

3.Main technical performances and Targets：(Dosage：C×0.7％)

Tested Data			Standard Data		JY-2202
			Class 1	Class 2
Water reducing rate≥（％）			12	10	20
Bleeding ratio≤（％）			90	95	15
Air content（％）			＜3.0	＜4.0	2.0
Setting time Difference(min)		Initial setting	－90～＋120		-55
		Final setting			-42
Compressive strength ratio （％）	1d		＞140	＞130	156
	3d		＞130	＞120	152
	7d		＞125	＞115	146
	28d		＞120	＞110	138
Shrinkage ratio（％）	90d		＜135		82
Corrosion resistance			YES OR NO		YES

4.Technical Performances and Applicable Ranges:

Dosage： 0.5～1.0％( as weight of cement). Water reducing rate：20～30％.

② JY-2209 in liquid form.

Item	Targets
Solid content	≥32％
Density	≥1.18
Other targets	Same as in powder form
Recommended Dosage	1.5～3.0％

③Keep strength unchanged,Use of this product can save cement consumption by 15-20%.

④When dosage is 0.7%(solid), Slump can be increased by 10cm.

⑤The product is suitable for manufacturing high strength concrete, accelerating strength concrete, flowing state concrete, pre-cast concrete and pre-stressed concrete, etc.

⑥Compressive strength, bending strength, impermeability and freeze-thaw resistance are remarkably increased.

5.Notices:

①Before use, mix ratio test must be done,especially for the first time using this product, to find out the correct mix rate and dosage.

②High grading cement and reasonable sand/stone grading must be used to make high-strength or super high-strength concrete.

③Water dosage must be strictly controlled to keep mixture unchanged.

④.The mix time should be prolonged for one minute;care should be taken to strengthen wet curing.

⑤If used with liquid form , moisture should be deducted from concrete mixture.

6. Packing ,transportation and storage:

①Packing:40kg/bag±0.25kg plastic woven bag(Inner with Plastic pellicle) .

Liquid product is packed with big iron drum, 200kgs /drum(net weight).

②During transportation should be waterproof and rainproof .

③It shall be stored in a waterproof, rainproof place to avoid agglomeration. If there is agglomeration, smashing or dissolving it will not affect using effect. The product is harmless and does not deteriorate in long terms.

7. Technical Consultance:

The company has lab equipments and professionals to serve the customers technically. If there is any technical problem on application, welcome inquire and we will try to our best to help the customers solve problem.

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