ConTec SP-311


ConTec SP-311 is a ready to use liquid plasticizing and swipe producing admixture for use in low slump concrete masonry units. It’s unique multi-component chemistry creates a moderate to high swipe appearance and minimizes both feed and compaction times with its lubricating properties. SP-311 improves compaction and density producing higher compressive strength and a less permeable surface.


Use ConTec SP-311 in all types of manufactured concrete where moderate to high swipe is desired


ConTec SP-311 is available in bulk quantities or packaged in 55 gallon (208 L) drums weighing 490 lbs (222 kg) and 260 gallon (984 L) totes weighing 2390 lbs (1084 kg).


Specific Gravity at 77F…….…… ….. 1.01
Viscosity at 77F, cps ……….…. 50 – 100
Weight per gallon ……………… … ….….. 8.4
% Volatile matter (NVM(1)) ……… 86 – 88


● Produces a moderate to high swipe.
● Creates more defined edges improving overall appearance.
● Optimizes material flow which shortens overall machine cycle times.
● Increases compressive and flexural strength.
● Added components improve cement particle dispersion and hydration.
● Reduces mechanical abrasion in equipment.


ConTec SP-311 should be stored at temperatures above 35°F (2°C) Care should be taken to prevent this product from freezing. Should SP-311 freeze, warm till completely liquid then use mechanical agitation to reconstitute.


The recommended dosage is 2 – 5 fl oz /100 lbs (130-325 mL/100kg) of cement. As with most plasticizers, water content should be monitored to achieve desired appearance. SP-311 is not a water reducer and should not be utilized as such. Please consult an ICT representative for further recommendations to determine the proper dosage rate and order of addition for your particular process. Order of addition procedures can vary per facility. Never mix SP-311 with other admixtures before application.