naphthalene concrete additive - FDN-A B C

High efficiency water reducer, Used as concrete additive, Strengthen the concrete slump and liquidity. - details see: https://www.buildingsupplieshub.com/naphthalene-concrete-additive-10083484

Place of Origin: Shandong China (Mainland)	Brand Name: Wanshan Group	Model Number: FDN-A B C	Color: Brown
Main Raw Material: naphthyl sulfonate formaldehyde	Type: Portland Pozzolan Cement	Na2SO4 content: Na2SO4 < 5% 10% 20%

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Naphthalene Sulfonate Formaldehyde Condensate

Naphthalene Sulfonate Formaldehyde Condensate ( short for FDN ) is a kind high efficiency water reducer. It is wildly used as concrete additive to reduce water and strengthen the concrete slump and improve its liquidity. While keeping the slump and compressive strength basically unchanged, the consumption of cement can be saved by 15%.

Performance indexes of concrete mixed with FDN (Note: standard blend dosage: 75x10^-2% powder)

Parameters		Standard GB8076-2008	FDN-A	FDN-B	FDN-C
Water Reduction Min %		≥14	18-28	17-25	16-22
Water Penetration Max %		≤90	79	80	85
Air Content Max %		≤3	2	2	2
Temporal distribution for setting(min)	Initial Setting Time	-90~+120	-90~+120	-90~+120	-90~+120
Temporal distribution for setting(min)	Final Setting Time	-90~+120	-90~+120	-90~+120	-90~+120
Compression Strength %	1d	≥140	170	165	160
	3d	≥130	160	155	150
	7d	≥125	145	140	140
	28d	≥120	135	130	125
Shrinkage	90d	≤135	82	85	88
Corrosion to Steel Bars		None	None	None	None

Homogeneity indexes for FDN (Note: standard blend dosage: 75x10^-2% powder)

Item	FDN-A	FDN-B	FDN-C
Appearance	Yellow/ Light Brown Powder	Yellow/ Light Brown Powder	Yellow/ Light Brown Powder
Solid Content %	≥92%	≥92%	≥92%
Na₂SO₄content %	<5%	<10%	<20%
Chloride Content, %	<0.3%	<0.4%	<0.5%
PH Value	7-9	7-9	7-9
Cement Flow Ability(mm)	≥250 mm	≥240 mm	≥230 mm
Fineness	315x10^-3mm ( <15%)	315x10^-3mm ( <15%)	315x10^-3mm ( <15%)
Surface Tension	(70±1)X 10^-3N/m	(70±1)X 10^-3N/m	(70±1)X 10^-3N/m