-81) is a specially formulated flowable high-strength concrete mix for pre-cast and cast-in-place concrete countertop applications. Super-plasticizer additive provides a flowable mix at low …QUIKRETE® Countertop Mix (No. 1106-80) is a specially formulated flowable high-strength concrete mix for pre-cast and cast-in-place concrete countertop applications. Super-plasticizer additive provides a flowable mix at low water/cement ratio. High-flow formula minimizes the need for mechanical vibration. Reduced-shrinkage formulation.QUIKRETE Countertop 80-lb High Strength Concrete Mix Item # Model # Shop QUIKRETE 41 A specially formulated flow able high strength concrete mix For use in pre-cast and cast-in-place concrete countertop applications Strip forms in 18 hours OVERVIEWLargest Manufacturer of Packaged Concrete | QUIKRETE: Cement and Concrete Products Have Fence Posts To Set? Set Them Using Fast-Setting Concrete Mix (in the red bag) Without Mixing Sets hard in about 20 minutes and supports heavy loads in 4 hours Watch How-To Video Product Details QUIKRETE ® ESSENTIALS How to Set Posts in Concrete (without mixing)at one time. Mix only enough countertop mix as can be placed in 1 hour. • For each 80 lb (36.3 kg) bag of QUIKRETE® Countertop Mix to be mixed,