Conplast® RP264
Conplast RP264 is a dark brown liquid based on selected lignosulphonates. When added to concrete mixes the admixture is absorbed onto the cement particles. It then acts as a dispersing agent which breaks down agglomerates of cement particles and enables the water in the mix to perform more efficiently.
Conplast RP264 delays the initial hydration of the cement which results in retardation of the setting time. However, once the concrete has undergone initial set, the hardening process continues normally.
Description
Uses
The unique dual function of Conplast RP264 improves both mixing water efficiency and delays initial set of concrete mixes.This improvement can be utilised to provide increased strength, density and work ability without increase in cement,whilst retardation of setting times enables avoidance of ‘cold joints’ where delays in transporting and placing concrete occur.
Towers, chimneys, high buildings, slip form structures, tunnel/shaft lining, offshore construction and in-situ piles.
Dosage
Conplast RP264 will normally be added at a rate between0.1 and 0.30 litres /50 kg cement depending on the slump and retardation required. Site trials should be carried out to determine optimum dosage. If used for cement reduction without loss in strength the dosage is normally 0.15 litres /50 kg cement.
Packaging
Conplast RP264 is supplied in 5, 20 and 200 litre containers.
Storage
Minimum shelf life of 12 months provided the temperature has not exceeded 20C to 500C. If this range is exceeded in any respect, advice should be sought from the supplier.
