New fast-setting concrete that sets in four hours instead of two to three days helps Caltrans reduce traffic problems due to construction.
Caltrans will use a new fast-setting concrete for a $6 million rehabilitation project on Interstate 680 between Walnut Creek and Dublin in California. The concrete sets in four hours instead of two to three days and willhelp reduce traffic problems due to construction. The new concrete is not more durable or stronger but is three to five timesmore expensive than conventional concrete.
Thanks to Abhijeet Chavan
FULL STORY: Caltrans' Driving Technology

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Urban Design for Planners 1: Software Tools
This six-course series explores essential urban design concepts using open source software and equips planners with the tools they need to participate fully in the urban design process.
Planning for Universal Design
Learn the tools for implementing Universal Design in planning regulations.
Economic & Planning Systems, Inc.
UCLA Lewis Center for Regional Policy Studies
Mpact (formerly Rail~Volution)
Chaddick Institute at DePaul University
City of Piedmont, CA
Great Falls Development Authority, Inc.
HUDs Office of Policy Development and Research