CONCRETE MAKING MATERIALS
ATTENDEES' AND EXPERTS' CHOICELightweight Additive
Elemix concrete additive consists of innovative polymeric spheres specially formulated for use in concrete. Distributed uniformly, it provides lighter weight, improves energy efficiency by decreasing thermal conductivity, and enhances durability in structural and non-structural applications. Its closed cell honeycomb-like interior structure gives concrete the ability to absorb energy, which reduces cracking and improves energy efficiency. As a manufactured sphere, Elemix additive reduces variability in concrete mixtures. Syntheon Inc. 412-490-4789. www.elemix.com.
CONCRETE PRODUCTION EQUIPMENT
The Slump Master III Safety Inspection Platform provides safe and convenient access for checking concrete slump, adding fiber additives, and washing trucks. It features a hands-free pivoting walkway with a multi-torsion spring mechanism to automatically lower, raise, and lock the pivot deck as personnel walk on and off. The unit is constructed with durable galvanized steel, meniscus fiberglass decking, and sand-infused fiberglass stairs for a permanent grit surface that's safe, rugged, and slip- and corrosion-resistant. Tapered bars allow for self-cleaning, and the platform requires no scraping, sandblasting, or painting. Available with single or double pivot decks, the Slump Master III can be used with both front- and rear-discharge trucks. C&W Manufacturing and Sales. 800-880-3878. www.cwmfg.com.
The Simem Xentrix planetary mixer's main drives are moved out to permit central charging of cement, admixtures, and water from the top for improved mixing performance and optimal concrete quality. Both water and cement are introduced in the center of the mixer for quick dispersion and shortened mix time. Modular interchangeable parts allow quick changes to the mixer configuration based on new production requirements. An automatic washing system uses high-pressure wash heads with 3-D movement, located at four positions inside the mixer, for faster and more efficient cleaning of the mixer. Simem srl. +039 0442 640014. www.simem.com.
Dual Technology Waterstop
Bentoject combines two technologies—a hydrophilic waterstop and a grout injection tube—in a single product that stops water intrusion through cold joints in below-grade concrete structures. A reinforced spiral steel wire prevents tube collapse during concrete placement. This is covered with a filtering membrane to form a permeable tube for future grout injection. A bentonite rubber outer skin covers the membrane and swells on contact with water, filling the cold joint like a standard hydrophilic waterstop. Any voids can be injected through the tube with chemical grout. DeNeef Construction Chemicals Inc. 800-732-0166. www.deneef.com.
Almost any image in standard graphic format can be turned into one, or a series, of formliners for cast-in-place or precast concrete. The photo-engraving process uses a computer-based method and a special CNC milling machine for transferring scanned image data into 256 gray scales and transferring the image to the elastic formliner. The resulting surface pattern can vary from fine to coarse, depending on the resolution of the image. Nawkaw Corp./Reckli. 800-905-2692. www.nawkaw.com.