CompositesWorld
Issue link: https://cw.epubxp.com/i/576646
OCTOBER 2015 70 CompositesWorld WORK IN PROGRESS anything ferrous, which afected their readings. When we tested basalt rebar, we found it was three times stronger than steel, easy to install and didn't rust, so we asked ourselves 'why aren't we using it here?'" Tony Celucci, another RockWerk partner adds, "We've had Dr. Issa test basalt rebar from many manufacturers to check product consistency, quality and fber content across various sizes of rebar. We found they varied dramatically — from 60% to 83% fber in some cases. Since there didn't seem to be any established standard for quality control, we decided to partner and establish a strategic supply chain where we could control everything from rock to fnished product." In addition to ACT, RockWerk currently is partnered with basalt rovings producer Mafc SA (Kells, Ireland), resin supplier Ashland Inc. (Columbus, OH, US) and an unnamed pultruder. RockWerk arranged to supply #3 (10-mm diameter) basalt- reinforced unsaturated polyester rebar to Lutey for the project. Generation 1 into the water After evaluating nine FHSU prototypes, the team was ready to make its frst production batch in fall 2014. Ozinga supplied pervious concrete, and labor was provided by UHC staf plus youth from two other Chicago-based non- profts: Empowerment through Educa- tion & Exposure (EEE), which exposes underprivileged youth to educational opportunities and activities that build knowledge and skills; and BUILD Chicago Inc., which works with at-risk and gang-involved youth to develop alternative lifestyles. Additionally, UHC president, Larry Asimow, owner of Larry Asimow Landscaping Inc., a local land- scape contractor, agreed to provide extra labor and construction equipment. Because one of UHC's missions is to promote materials reuse/recycling, the team used a lot of "found" materials to produce the FHSUs. Donated 208L plastic drums became the outer "mold" (form) for the concrete and cardboard concrete forms formed the hollow center. Te latter didn't prove durable enough, so the team switched to PVC pipe that was split lengthwise to allow a wooden strip to be inserted. A plastic ball sealed of the top of the pipe so concrete didn't get into the center opening when it was poured into the barrel. During the forming process, polymer-based rope loops were pushed through the struc- ture's walls to form anchors for fans of geotextile "kelp," which also was bonded in place with plastic sealer and foam. Each FHSU used four lengths of composite rebar and featured a separate concrete "foot" designed to keep the end farthest from the stream bank up of the riverbed so it wouldn't fll with sediment. A soybean-based sealer/curing/release agent for the pervious concrete (Te Bean, C2 Products Inc., Arcadia, IN, US) was used, and each unit was wrapped in a plastic bag to help speed cure by ensuring the concrete didn't dry out. COMBINED LOADING SHEAR FIXTURE NO. WTF-NR-(CLS) V-NOTCHED RAIL SHEAR FIXTURE NO. WTF-NR ASTM D 7078 DR. DANIEL ADAMS, VICE-PRESIDENT STANDS BEHIND THE FIXTURES HE DEVELOPED… AND EVERY FIXTURE WE SELL. Expert consultation with Dr. Don and Dr. Dan • Over 40 fixtures in stock, ready to be shipped. • Email or call today to discuss your fixture and custom design needs. 2960 E. Millcreek Canyon Road Salt Lake City, UT 84109 Phone (801) 484.5055 Fax (801) 484.6008 email: wtf@wyomingtestfixtures.com www.wyomingtestfixtures.com Dr. Donald F. Adams President 50 years of Composite Testing Experience W T F yoming est ixtures INC. ANOTHER DR. ADAMS HAS JOINED US. TWO EXPERTS ARE BETTER THAN ONE