Tag Archives: Concrete

Adjacent precast box beam bridges

July 29, 2015

For years, adjacent prestressed concrete box-beam bridges have been employed for short and medium spans—two-thirds of all state Department of Transportations (DOTs) use them. Cracks in the longitudinal grouted joints between adjacent beams have often been observed.

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Coming unbolted

July 27, 2015

Expansion bolts are commonly used to support new structural attachments in masonry or concrete. For example, expansion bolts are often installed into concrete spandrel beams to hold up new steel relieving angles, which, in turn, support building cladding such as brick or stone.

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Understanding waterstops: To ensure success, one must specify for performance, install with care

June 30, 2015

Joints formed between adjacent concrete pours and where mechanical elements penetrate the concrete are the most likely points of water ingress into below-grade concrete structures. To prevent this from occurring, waterstops are commonly specified and installed at every joint in the concrete below-grade.

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Installing thermoplastic or rubber waterstops

June 29, 2015

The July 2015 issue of The Construction Specifier examined various aspects of waterstops. In this web-exclusive article, issues concerning the installation of dumbbell and ribbed center-bulb models are explored.

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ASCC to hold annual conference this fall

June 9, 2015

This fall, the American Society of Concrete Contractors (ASCC) is holding its conference in Dallas. The three-day event will take place September 24 to 27; it features educational sessions and networking opportunities for concrete contractors, manufacturers, designers, and other industry professionals.

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