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Sodium thiocyanate (NaSCN) is used in concrete as a setting/strength accelerator, mainly in cold weather. Sodium Thiocyanate is an organic sodium salt which is the monosodium salt of thiocyanic acid. It contains a thiocyanate.It is an odorless white solid. Sodium thiocyanate is the chemical compound with the formula NaSCN.
Sodium thiocyanate (NaSCN) is used in concrete as a setting/strength accelerator, mainly in cold weather.
Here are general industry guidelines (not a site-specific prescription):
0.2% – 1.0% by weight of cement
Typical effective range: 0.3% – 0.6%
If cement = 100 kg
Minimum: 200 g (0.2 kg)
Common use: 300–600 g
Maximum (do not exceed): 1 kg
Dissolve sodium thiocyanate completely in mixing water
Then add to the concrete mix
Ensure uniform mixing
Construction Industry : Sodium thiocyanate is used in the cement industry as an initial strengthening agent. The chemical enhances and strengthens bonding and acts as a grinding helper. Also, the use of sodium Thiocyanate prolongs the lifespan of cement. When preparing concrete, the chemical aidsin accelerating hardening. So, it’s a critical setting accelerator in concrete admixtures.
Faster initial and final setting
Improved early strength
Useful in cold climates or when early demoulding is required
Do NOT overdose → can reduce long-term strength
Not recommended for RCC / prestressed concrete
(may increase corrosion risk of steel)
Avoid combining with chloride-based accelerators
Always do a trial mix before site use
If you tell me:
PCC or RCC?
Grade of concrete (M20, M25, etc.)
Weather conditions
Sodium thiocyanate (NaSCN) is normally used as a kind of food preservative in daily life, but using excessive NaSCN in milk would cause the low absorption of iodine in human body, and then would make the normal secretion of thyroid hormone disorder. In this study, we developed a method combines AgNPs and MIL-101(Fe) which is a kind of Metal organic frameworks materials as a kind of composite Surface Enhanced Raman Scattering (SERS) substrate and achieved the determination of NaSCN in spiked milk.