PCE 98% Powder and Flake type
POLYCARBOXYLATE SUPERPLASTICIZER POWDER
Polycarboxylate superplasticizer PCE is the newest generation superplasticizer in domestic and abroad. Comparing with FDN and other superplasticizer, PCE has many characteristic advantages in technology and performance as following:
(1) low dosage, high rate of water reducing;
(2) keep concrete good slump retention;
(3) good compatibility with cement;
(4) small shrinkage of concrete to keep the stability of volume and durability;
(5) environmental in production and usage.
(6) base on above advantages, PCE attract the attention from engineering field and has been widely used in some important projects. Predictably, base on above advantages, PCE will be the main trend in the market.
Due to most of PCE is liquid type and procedure of PCE powder is complex and dangerous,PCE is mostly sold in liquid in market. Recently, with the technology and procedure improved, PCE powder is common in market. The powder will be more convenient for client in transport and use.
Motar Performance
It is homologous between water-reducing rate of motar and fluidity of cement paste. The more fluidity of cement paste, the more water-reducing rate of motar.
Water-reducing rate increases fast and high when the dosage increase. When the dosage is same, the water-reducing rate of PCE powder is 35% higher than that of other superplasticizer in market.
Due to the influence from the admixture and sand coarse aggregate, Water-reducing rate in concrete is different from that of motar. When the the admixture and sand coarse aggregate are in favour of the concrete flow, the water-reducing rate of concrete is higher than that of motar.
It has antifreezing performance when temperature is above -5¡æ. So it can be used in antifreezing concrete.Comparing with standard concrete ,the bleeding rate and shrinkage rate of concrete with PCE powder is lower ,Initial setting time prolong 60 minutes , final setting time is similar, air content is controlled in 2-4%.
Recommed Dosage:
Solid contents of PCE powder is 98%. Normal dosage is 0.12%-0.3%.
When dosage is 0.06%, it has 12% water reducing rate and 23% strength growth, this beyond the performance of common pumping agent in market,.
When dosage is 0.1%, performance beyond that of FDN and Melamine.
But when dosage is below 0.14%, its good performance is not obvious.
When dosage is above 0.2%, it is excellent in concrete fluidity and pumping performance.
Therefore, the best dosage is recommended as 0.12-0.24%;
When making concrete with high grade, big dosage of fly ash or superfine slag powder or other special requirements,dosage can be expanded to 0.3-0.5%.
Test state that there is no cohesion and bleeding in concrete even the dosage expand to 0.5%, and its water-reducing rate still increase.But air content increase, setting delay, strength decrease.
Technological Characteristics:
At present, most PCE powder in market are produced by process of sparying and drying. So they have some defect: its 5% separant,3% moisture result loss of effective constituent and performance in use.
We use the technology of thermosynthesis which save the producing cost in a lot, without separant, with high purity of 98% solid contents. In performance, high purity guarantee the low dosage, more effective constituent guarantee the better slump retention, those save the cost for client.
Safety and Attention:
This product is stored in paper barrel with PE bag inner.
Avoid rain and sundries to mix in.
Quality guarantee period is 12 month
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