01372790

Component

Premature deterioration of concrete pavement due to D-cracking has been a problem in Kansas since the 1930s. Limestone is the major source of coarse aggregate in eastern Kansas where the majority of the concrete pavements are constructed. D-cracking field performance was investigated to determine whether aggregate freeze-thaw durability specifications implemented in the 1980s have reduced materials-related failures to an acceptable level. The results indicate that the failure rate has decreased, but not to an acceptable level. The minimum failure rate was determined to be 31% of projects exhibiting D-cracking in less than 20 years. Seventy one percent of the failing projects were constructed with coarse aggregate from 9 quarries. Limestone source material appears to be the dominant parameter affecting D-cracking. Kansas Department of Transportation (KDOT) policies (any actions, requirements, or decisions) that affect the risk of D-cracking were reviewed. Recommendations included implementation of field performance criteria for aggregate material sources, improvement and unification of quarry monitoring and sampling procedures, and to perform life-cycle cost analyses for various aggregate materials in concrete.

This paper was sponsored by TRB committee AFN40 Concrete Materials and Placement Techniques

01362476

12-3809

English

17p

2012

Transportation Research Board 91st Annual Meeting

Digital/other

Figures; References; Tables

Concrete pavements; Cracking; Deterioration; Freeze thaw durability; Life cycle analysis; Limestone aggregates

Kansas

Highways; Materials; Pavements; I30: Materials; I32: Concrete

Transportation Research Board Annual Meeting 2012 Paper #12-3809

TRIS, TRB

Feb 8 2012 5:19PM