This plasticizer is designed to be especially effective with mixes that have a high content of finer sands and particles. It can be used to achieve a homogeneous flow in mixes with high fines, a softer flow in mixes like GFRC, and can soften a mix slightly without imparting too much sag or slump. 420 is often used to temper mixes that have been plasticized with 310 or 205. This combination of water reducers often allows the fabricator a wide range of possibilities in responding to environmental conditions.
Dosage Rate: 0.1- 2% of Cement Weight
The ultimate indicator of an overdosage of plasticizer is segregation of the mix. Make test batches prior to production to ensure optimum dosage.