Sikament®-686 is a high range water reducing admixture utilizing Sika's ViscoCrete® polycarboxylate technology. Sikament®-686 meets the requirements of ASTM C494/AASHTO M 194, Type A & F.

Various levels of water reduction can be achieved by adjusting the dosage rate of Sikament®-686.    When used as a high range water reducing admixture, water reduction up to 30% can be obtained. The superplasticizing action of Sikament®-686 allows for the production of high slump/flow concrete with excellent workability that can typically be placed with minimal vibration even at a low water/cementitious ratio.   At lower dosage rates Sikament®-686 is an effective normal water reducing or mid-range water reducing admixture. This application is ideal for use with lean, harsh concrete mixes or concrete containing supplementary cementitious materials.    The combined water reducing and superplasticizing action of Sikament®-686 provides the following benefits:      ▪ Reduced water cement ratios produce more durable, dense concrete, ▪ Increased slump and workability improves efficiency of labor and reduces labor costs, ▪ Improved finishing characteristics, ▪ Increased strengths allow faster structural use of concrete.      Sikament®-686 does not contain intentionally added chlorides.