MoDOT to test smog-absorbing concrete on St. Louis roadway

Friday, October 7, 2011 | 7:35 a.m. CDT; updated 10:01 a.m. CDT, Friday, October 7, 2011

ST. LOUIS — Missouri transportation officials plan to use a St. Louis roadway to test a new type of concrete that can absorb smog.

The Missouri Department of Transportation said the concrete will contain an additive that helps it absorb smog, which is then broken down by sunlight and released into the air as nitrogen and carbon dioxide.

Plans call for the concrete to be poured on a 1,500-foot section of Missouri 141 in the St. Louis area.

The department said the concrete already has been used in Europe but is new to the United States.


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