Concrete Products

JAN 2018

Concrete Products covers the issues that attract producers of ready mixed and manufactured concrete focusing on equipment and material technology, market development and management topics.

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50 • January 2018 INNOVATIONS REPORT FIBER REINFORCEMENT MasterFiber series includes six macrofiber (MAC designation) and five microfiber (F, fibrillated; M, monofilament) offerings. The newest is MAC 360 FF, manufactured from a proprietary blend of polypropyl- ene resins and equal to ASTM C1116/C1116M Standard Specification for Fiber-Reinforced Concrete guidelines. The synthetic hybrid fiber was developed to meet contractor, producer and engineer perfor- mance targets; strengthen plastic concrete to minimize shrinkage and settlement cracking; and, augment hardened slabs and structures' post-crack flexural toughness. MAC 360 FF serves as a noncorrosive, three-dimensional, secondary reinforcement alternative to conventional welded-wire reinforcement, small diameter bars and steel fibers. Along with providing effec- tive crack and plastic shrinkage control and reducing settlement cracking, the new fiber effectively increases the post-crack residual strength of concrete, plus impact and shatter resistance. The fiber suits hand-troweled concrete; industrial, warehouse, commercial and residential slabs on grade; pavements, white-topping and overlays; composite metal decks; and, architectural panels. Rounding out the MasterFiber macrosynthetic offerings are MAC Matrix, engineered for secondary reinforcement to control shrinkage, temperature and settlement cracking; MAC 100 for secondary rein- forcement and plastic shrinkage control; MAC 100 Plus for secondary reinforcement against cracking; MAC 2200 CB, chemically-enhanced to impart superior bonding and increase structural capacity and tough- ness; and, 160CB with chemical bonding capability for shotcrete, precast tunnel segments and concrete pipe. MasterFiber microfibers are F 70, a fibrillated product for shrink- age and temperature reinforcement; F 100, an enhanced fibrillated polypropylene product geared for shrinkage and temperature rein- forcement; M 100, a high-tensile strength, high modulus of elasticity, ultra-thin monofilament homopolymer polypropylene product; plus, M 35 and M 70, monofilament polypropylene fibers engineered to reduce plastic shrinkage cracking. — BASF Construction Chemicals/Admixture Systems, 800/628-9990; World of Concrete Booth S10304 STEEL, SYNTHETIC FIBER REPORT Concrete Products examines polypropylene, nylon, acrylic and other synthetic products for secondary concrete reinforce- ment, plus steel fibers, which continue to show potential for replacing conventional rebar or mesh. Most of the products and technologies here will be exhibited at 2018 World of Concrete. BASF ADMIXTURE SYSTEMS An alternative to concrete-grade rope or tape-type synthetics, MasterFiber MAC 360 FF is engineered to replace welded-wire reinforcement and small diameter steel bar.

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