A PERFORMANCE STUDY OF DIFFERENT CURING MATERIALS APPLIED TO SOIL PORTLAND CEMENT BASES COURSE CURE

BCR2A 09 – The 8th International Conference on the Bearing Capacity of Roads, Railways, and Airfields, June 29 – July 2 2009

University of Illinois, at Urbana-Champaign, Illinois, USA. 

Rita Moura Fortes

rmfortes@terra.com.br

João Virgilio Merighi

jmerighi@terra.com.br

ABSTRACT

In 2007 was signed an agreement between “Departamento de Estradas de Rodagem de São Paulo – DER-SP” (São Paulo DOT) and Mackenzie Presbyterian University (UPM) for construction of a test facility. São Paulo State Test Track is being constructed to improve research in all areas related to highway without any cost to DER-SP or UPM. In Sao Paulo State has more than 10 thousands kilometers of soil-cement base course. Part of these roads was made in the 70´s and after 30 years, the base course is almost intact. If some rehabilitation of the Road is needed, it occurs in the last layer. However this technology has been used, the DER-SP hás observed that the cure of this material is essential for its performance, mainly to avoid the cracking appearance. This paper reports a performance study of the different curing materials and when and how to apply curing over soil-cement courses.

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link to download: A performance study of different curing materials applied to soil portland cement bases course cure