Concrete Products

MAR 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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Page 68 of 75 March 2018 • 67 INNOVATIONS EQUIPMENT & PRODUCTS High-performance polyurethane, polyurea and hybrid coatings suit a variety of applications and include the fast-set Chemline Arc, which adheres well to concrete with the use of a primer. The spray applied, two-component polyurea contains 100 percent solids and zero volatile organic compounds. It is widely used in both the construction and contractor markets due to its physical properties and moisture resis- tance. Typical applications are wastewater basins, parking garages, foundations and water ponds. Chemline Arc is a pure polyurea, whereby it yields chemical resis- tance, corrosion protection, and handles a wide range of temperature fluctuations. Product exhibits impact resistance even in sub-freezing weather. With a 12-second gel time, it provides rapid turn around and reduces labor costs. Among Chemline Arc physical properties: Shore 52 D hardness, 3,850 psi tensile strength; 570 pli tear resistance/ DIE-C; 425 percent ultimate elongation; and, 17.0 mg. loss taber abrasion. Coating must be applied using a high pressure, heated plural component pump. — Chemline Inc., St. Louis; 314/664-2230; www. Polyurea coating New family of ergonomically constructed Super Coil anchored tool tethers are manufactured with a low-force polyurethane elastic core woven throughout the entire body of the webbing. The result is a device that creates an 18-ft. diameter working area but gently retracts to 42 inches. Designed for tools weighing up to 25 lbs., the Gear Keeper man- ufacturing process minimizes "extension" arm fatigue while in use and—equally important—entanglement issues when climbing or working in confined areas. The new tethers present what product engineers contend are compelling safety advantages by offering a significantly longer extension length, combined with a shorter retraction length than competitive, ergonomically stiff tethers employing bungee-type cores. Load tested beyond drop weight, other Super Coil tether safety and strength features include a lanyard cord that is sewn length- wise into the webbing to avoid damaging the cord integrity and ensure greater durability and strength. Model TL1-4021 speci- fications include 1-in. tether webbing and two stainless steel carabiners load rated above 1,100 lbs. with gates that do not hang up from a side load. Model TL1-4025 specifications also include a 1-in. tether webbing, but one stainless steel carabiner and a fixed web tool attachment loop. Both models have retracted and extended lengths of 42 in. and 109 in., adequate for bucket attachment. — Hammerhead Industries, Ventura, Calif., 888/588- 9981; Tool tethers TL1-4021 TL1-4025 A brushless DC gearless motorized drive roller, the V24 brings torque and speed while eliminating the need for multiple gear ratios. The oil-free, gear-less MDR is of solid, single throughshaft construction, and available in black E-Coat finish or stainless steel for washdown applications. Gearless operation minimizes mechanical wear and allows for use in extreme temperatures. Compact design allows the V24 to mount easily under the con- veyor, eliminating the possibility of direct impact. To minimize inventory requirements, the roller is versatile and can be used with multiple frame widths and gear ratios. The 24-volt powered V24 oper- ates at 35 fpm and up. Its universal design incorporates both O-band and Poly-V drive options. Larger bearings and a non-cantilever design eliminates side load bearing failures. The V24 is also compatible with a variety of ASI controllers available globally. — Volta24, Brookfield, Wis., Gear-free motor drive roller

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