Effect of Different Variables on Horizontal Movement of Concrete Pavement


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Title: Effect of Different Variables on Horizontal Movement of Concrete Pavement

Author(s): I. Minkarah, J. P. Cook, J. F. McDonough, and S. Jaghoory

Publication: Symposium Paper

Volume: 70


Appears on pages(s): 785-806

Keywords: concrete slabs; concrete pavements; cracking (fracturing); dowels; joints (junctions); measurement; motion; subbases.

Date: 1/1/1981

Measurements of pavement movement were taken over a period of 8 years on a test pavement in Ohio. Both long term and short term transient movements of the pavernent were recorded. The variables incorporated into the test program were slab length, type of subbase, type of dowels and joint configuration. Electronic measurements of the short term transient movements show that while most of the movements were clustered around zero, some very large movements had occurred in all 10 sections of the pavement, regardless of the variables involved. These occasional large movements were much greater than the long term annual joint movement. Long slabs on granular base showed midslab cracking much earlier than similar slabs on stabilized base. After cracking, the longer slabs showed behavior statistically similar to shorter slabs. During early years of slab life, plastic coated dowels showed fewer erratic movements than standard dowels. Joint size and configuration apparently had very little effect on joint movement or spalling. Short slabs on stabilized base showed the least damage and the most regular behavior.


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