White-topping joints stretch out on I-20
Article Abstract:
The 0.63-mm-diameter polyolefin fibers manufactured by St Paul, MN-based 3M Corp were evaluated by using them as reinforcements for the thin portland cement concrete white-topping on Interstate 20 near Jackson, MS. The project intends to determine if the fibers can increase slab length on thin white-topping roadways. It involves construction of sections with 3M fibers, fibrillated polypropylene fibers and plain concrete. Although adding $65 per cubic meter of concrete used, the fibers affords savings from reductions in joint sealing and labor costs due to the wider joint spacing it allows.
Publication Name: Civil Engineering
Subject: Science and technology
ISSN: 0885-7024
Year: 1998
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Green concerns
Article Abstract:
The growth of the UK environmental technology sector is being hampered by the failure of companies to comply with environmental regulations. However, this has not deterred environmental firms from introducing a host of new technologies. These include Vert's method for recycling concentrated residues from contaminated land, IBS Viridian and Cardev International's bio-enhanced ultrafiltration system for effluent recycling and Procal Analytics' Procal 500 in-site stack gas analyzer.
Publication Name: Engineering
Subject: Science and technology
ISSN: 0013-7782
Year: 1997
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Painting the town white - and green
Article Abstract:
Several large cities such as Chicago, IL, Washington, DC, and Atlanta, GA, suffer from the effects of heat islands. Heat islands are caused by clumps of dark-colored surfaces. The phenomenon accelerates smog formation, raises airconditioning bills and causes the public discomfort. It can be countered by 'cool communities' strategies such as using lighter colors for roofs and pavements, planting trees, using reformulated gasoline and advocating electric cars.
Publication Name: MIT's Technology Review
Subject: Science and technology
ISSN: 1096-3715
Year: 1997
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