Evaluation Of Joint Sealant Materials
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Evaluation of Joint Sealant Materials, US-36, Doniphan County, Kansas
Author | : Rodney A. Montney |
Publisher | : |
Total Pages | : 7 |
Release | : 2009 |
Genre | : Pavements, Concrete |
ISBN | : |
The Kansas Department of Transportation began using silicone joint sealant on Portland Cement Concrete Pavement (PCCP) almost exclusively in 1983. During the next 6 years there was widespread failure of these products. A project was constructed in 1990 to evaluate several different types of joint sealants available. While most of the silicone products in this study appeared to outperform the other types, KDOT could not ignore the failure rate of the previously installed silicone sealants. During the course of this investigation, KDOT issued a policy on sealing new PCCP joints. The policy requires preformed neoprene seals in all transverse joints, and allows longitudinal joints to be filled full depth with either hot or cold pour sealants.
Evaluation of Joint Sealant Materials (interim Report No. 1)
Author | : Louisiana. Department of Highways |
Publisher | : |
Total Pages | : 86 |
Release | : 1972 |
Genre | : Highway research |
ISBN | : |
Evaluation of Joint Sealants of Concrete Pavements
Author | : Ashok H. Gurjar |
Publisher | : |
Total Pages | : 131 |
Release | : 1997 |
Genre | : Concrete |
ISBN | : |
Project 0-187 task 15 continued investigative efforts of project 1371. The project completed laboratory tests including relaxation tests, bond-strength tests, and fatigue tests for various sealant materials, and also established a field test site of a variety of joint sealants to monitor performance. The researchers constructed a material behavior model based on finite-deformation viscoelasticity as a function of temperature, deformation, and age effects. They studied the correlation between natural and artificial weathering and proposed a sealant performance model. Based on this model, this report provides a procedure for estimation of the service life of a sealant in concrete pavement joints. This report also proposes a specification and a test protocol for joint sealant materials, which incorporate performance prediction procedure.
Improved Materials and Processes for Sealing and Resealing Joints in Portland Cement Concrete Pavements
Author | : Larry N. Lynch |
Publisher | : |
Total Pages | : 178 |
Release | : 1993 |
Genre | : Pavements, Asphalt concrete |
ISBN | : |
Rheological Analysis of Silicone Pavement Joint Sealants
Author | : Larry N. Lynch |
Publisher | : |
Total Pages | : 197 |
Release | : 1995 |
Genre | : Joints (Engineering) |
ISBN | : |
Building Sealants
Author | : Thomas F. O'Connor |
Publisher | : ASTM International |
Total Pages | : 351 |
Release | : 1990 |
Genre | : Fatigue |
ISBN | : 0803112823 |
Concerned with sealants for buildings (not with constructing sealant material). The 24 papers from a symposium in Fort Lauderdale, Florida, January to February 1990, address such major concerns of the industry as the identification and quantification of the effects of movement on sealants, laborator
Transverse Joint Sealing with Improved Sealants
Author | : Gary Harris |
Publisher | : |
Total Pages | : 70 |
Release | : 1991 |
Genre | : Pavements |
ISBN | : |
Concern about premature joint sealant failures occurring in portland cement concrete (PCC) pavements gave impetus to initiating this research project. Eight sealants, including three silicone sealants, were evaluated and tested in the lab as well as incorporated in approximately 700 joints in the field and evaluated over a six-year period. The preliminary data show that among the silicone sealants, Dow Corning 888 rated the highest. However, this was rated third overall behind the W.R. Meadows cold-applied Sof Seal and Crafco #231 hot pour sealants. The W.R. Meadows and Crafco sealants cost approximately 30% and 50% less to furnish and place than the Dow Corning product. All joint sealants will continue to be evaluated.
Field Evaluation of Three Joint Sealants
Author | : David Frederick Noble |
Publisher | : |
Total Pages | : 31 |
Release | : 1987 |
Genre | : Pavements, Concrete |
ISBN | : |
The purpose of the study reported here was to evaluate the performance of three joint sealants compartmented (A) and closed cellular (B) preformed neoprene, and a two-component cold-mixed polysulfide (C)-- that were used in the interchanges for Interstate 64 near Charlottesville. The condition of the sealants and joints was observed, and the extent of the failures was estimated during a preliminary survey. The specific types of failure were then either measured or documented photographically during the warm- and cold-weather surveys. It was concluded that: 1. The neoprene sealants far out-performed the polysulfide sealant. 2. The polysulfide sealant probably failed because of compression set. The particles in the joints caused more distress by contributing to the loss of load transfer than by causing any damage such as spelling. The lack of confinement near the expansion joints and the open ends of the ramps permits one-way movement of the slabs; this contributes to the loss of load transfer and the discrete functioning of the slabs so that they break up under heavy loads. It was recommended that: 1. The Department discontinue the use of cold-mixed material to seal contraction joints in PCC pavements. polysulfide The Department use preformed neoprene sealants or comparable sealants to seal joints in PCC. These first two recommendations have already been put into effect by the Materials Division on the basis of field tests made by the Materials Division and the conclusions of this report. Expansion joints be eliminated, and the anchoring of slabs near the open ends of ramps be investigated.