New Runways Take Off

by Alan R. Jefts, Dir. of Airport Projects; Turner Collie & Braden, Houston, TX,

Serial Information: Civil Engineering—ASCE, 1986, Vol. 56, Issue 12, Pg. 47-49

Document Type: Feature article

Abstract: The two mile long runway 9-27, now being constructed at Houston Intercontinental Airport, was built for about 30% ($7 million) less than if designed conventionally. Rather than concrete or asphalt, this one is made of a mixture of lime, cement and flyash. The last is the prime cementitious material, and since it's available practically free (it's a waste material from a nearby coal-fired powerplant), money was saved. The mix is laid down not with a paving train but with earthmoving equipment, further cutting costs. An introduction to the design procedure is provided. The approach is to design to meet a set of performance criteria, rather than empirically based design philosophies that have evolved over the years from early concrete and asphalt paving practices.

Subject Headings: Airport and airfield runways | Cement | Fly ash | Lime |

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