The additive is 20% polycarboxylic
acid plasticizer (PC) produced by Sika Company.
In order to improve the rate of strength gain, the addition of accelerator dosage level was fixed at 1% and 1.5% of polycarboxylic
ether based superplasticizer (PCE) was used for improving the workability.
A superplasticiser based on modified polycarboxylic
ether (FM-34 from Addiment) was used as a high range water reducer (when the concrete strength was measured).
Naphthalene water reducing agent and polycarboxylic
acid water reducing agent were applied to study the compatibility of accelerator for water reducing agent.
Furthermore, in order to improve the workability, a polycarboxylic
ether based high range water reducing admixture (HWR) was used.
They are comprised of at least one epoxide-containing binder containing from 0.5 to 40% by weight, based on the binder, of copolymerized glycidyl-containing monomers, and at least one tris(alkoxy-carbonylamino)triazine and at least one polycarboxylic
acid, in particular a straight-chain dicarboxylic acid, and/or a carboxy-functional polyester as crosslinking agent, or at least one tris(alkoxy-carbonylamino)triazine and at least one oligomeric or polymeric, epoxide-containing crosslinking agent containing from 0.5 to 40% by weight, based on the crosslinking agent, of copolymerized glycidyl-containing monomers, and/or a low molecular mass, epoxide-containing crosslinking agent, and at least one carboxyl-containing polymer as binder, both variants comprising at least one polyol.
The superplasticizer was a polycarboxylic
acid water reducing agent.
superplasticizer (PS) was used to improve the workability of the concrete.
ether based superplasticizer sky 8233 and viscosity modifier, Mastermatrix VMA 362, were used in this study as admixtures to maintain the workability.
In order to promote the NS or SF particles homogeneously dispersing in all mixes, a polycarboxylic
superplasticizer (SP) with relative density of 1.09 was incorporated.
To improve the workability of concrete, high range water reducing polycarboxylic
based super plasticizer was added to the mixture.
This chemical admixture is also known as a high range water reducer (HRWR) and supplied by a local manufacturer which is the polycarboxylic
ether (PCE) based.