详情

Evaluation of Penetrating Sealers Applied to Saw Cut Faces in Concrete Pavement Joints

项目名称：	Evaluation of Penetrating Sealers Applied to Saw Cut Faces in Concrete Pavement Joints
摘要：	For the last six years, the Wisconsin Department of Transportation (WisDOT) as part of the high performance concrete (HPC) pavement standard special provision has specified the use of a penetrating concrete sealer be applied to the saw cut faces in the joints. The HPC pavements on the Interstate 94 North-South corridor and the Interstate 41 corridor from Oshkosh to Green Bay have received this joint treatment. The specification requires the use of a silane or siloxane-based concrete penetrating sealer to be applied as soon as possible after the sawing operation is complete. To date, a variety of different products have been used, a number of different application methods have been employed, and the rates of application have been variable. In addition, the construction process and the construction inspection have not been uniform or consistent statewide. Therefore, there is no assurance that WisDOT is accomplishing the goal of distress free joints and longer life of the pavement. Finally, there has been no assessment by WisDOT on whether there are benefits and cost effectiveness to doing this work. The goal of this project is to (1) evaluate the concrete sealers used to date and the construction methods employed to determine if the achievement of sealing concrete pavement saw cut faces is accomplished with effectiveness and uniformity. (2) Assess the work done to date to determine if the research team is achieving the goal of longer lasting concrete pavement joints. (3) Develop standard specification language for applying penetrating sealers to concrete pavement saw cuts along with construction inspection guidelines. The objectives of this project are to: A. Evaluate the penetrating sealers being used and make an assessment on their impacts to the durability of the concrete. B. Assess the methods of construction and application in regards to the effectiveness of the seal and uniformity of application. C. Perform field studies to compare pavements with sealed saw cut faces to pavements that were not sealed. D. Recommend improvements in products and construction methods to assure the extension in the life of concrete pavement joints that is expected. E. Revise current specifications for construction. F. Recommend specifications for the future use of sealing sawed joints on WisDOT projects so benefits and cost effectiveness are improved.
状态：	Active
资金：	125000
资助组织：	Wisconsin Department of Transportation
执行机构：	University of Wisconsin, Platteville
主要研究人员：	Xiao, Danny
开始时间：	20171005
预计完成日期：	20191005
实际结束时间：	0