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Cement Concrete Water-Reducing Admixture

Product Details:

component	Naphthalenesulfonate poweder or solution
Place of Origin	China (Mainland)
Brand Name	BOSTD
Model Number	FDN

Payment & Shipping Terms:

Minimum Order Quantity:	1,000 Kilogram
Packaging Details:	Bag, pallet, etc.
Delivery Time:	within 10 days for common products after receipt of L/C or T/T
Payment Terms:	L/C,T/T
Supply Ability:	3,000 Metric Ton per Month

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Detailed Product Description

BOSTD Water-reducing admixtures are added to concrete to achieve certain workability (slump) at a lower water/cement(W/C) ratio.FDN Water-reducing admixtures are used to improve the quality of concrete and to obtain specified strength at lower cement content. They also improve the properties of concrete containing marginal- or low-quality aggregates and help in placing concrete under difficult conditions. Water reducers have been used primarily in bridge decks, low-slump concrete overlays, and patching concrete.

Specification

Item	FDN-I	FDN-II
Appearance	Dark brown powder	Dark brown powder
Cement grout fluidity(mm) ≥	220	235
pH (1% water solution)	7-9	7-9
Diameter (60-mesh residue) % ≤	15	15
Water content (%) ≤	10	10
Sodium sulfate content (%) ≤	17	5

Item		GB8076-97 Grade 1	FDN-I	FDN-II
Water-reducing rate (%)		≥12	20	27
Ratio of bleeding rate (%)		≤90	70	60
Air content (%)		≤3.0	2	2.5
Compressive strength ratio (%)	1d	≥140	146	150
	3d	≥130	152	176
	7d	≥125	160	165
	28d	≥120	158	160

Note: Also complies with BS5075:Pt3: 1985

Addition Rates

0.5-1.5% by weight of total cementitious centent. Exact dosage rates are dependent on the type of effect sought, quality of cement and aggregates, W/C ratio and ambient temperature. It is advisable to carry out trial mixes.