Tech Shield Admixture System

ICT’s Tech Shield System

The Tech Shield System protects concrete masonry structures from rainwater intrusion & related damage. The System utilizes admixtures for both concrete masonry units (CMU) and for masonry mortar.

  1. The blocks (CMU) are manufactured by a Qualified Tech Shield Producer using integral water repellent admixture.
  2. The mortar used for the construction project incorporates a water repellent admixture.

Used properly in new construction, the Tech Shield System provides the following benefits:

  • Lasting resistance to wind-driven rain
  • Reduced absorption and moisture wicking
  • Decreased potential for unsightly efflorescence
  • Enhanced color retention of architectural block & mortar

ConTec TS-922, TS-941, and admixture variations thereof* are qualified Tech Shield System components for use in the manufacture of water repellent CMU. Tech Shield Mortar Admixture or ConTec WR-650 (powder) is either added at a jobsite or blended into a dry packaged format to produce water repellent masonry mortar.

* Water Repellent Admixtures that differ in concentration levels and corresponding dosage rates

These products have been evaluated by the following:

  • ASTM C140 Standard Test Methods for Testing Concrete Masonry Units and Related Units – American Society for Testing and Materials
  • TEK Note 19-7 Test Methods for Evaluating Characteristics of Concrete Masonry Units with Integral Water Repellent: Concrete Masonry & Hardscape Association
  • ASTM C270 Standard Specification for Mortars for Unit Masonry
  • ASTM C1072 Standard Test Method for Measurement of Masonry Flexural Bond Strength
  • ASTM C1384 Standard Specification for Admixtures for Masonry Mortars
  • ASTM E514 Standard Test Method for Water Penetration and Leakage Through Masonry