00099908

Component

http://onlinepubs.trb.org...s/trr/1975/535/535-003.pdf

http://scholar.google.com...lott&publication_year=1975

A comprehensive program to study the performance of concrete pavement joint sealing materials and related practices is being conducted in Pennsylvania. The experimental pavement consisted of combinations of various sealant materials, joint shapes, and slab lengths; a total of 1,020 transverse joints were involved. The materials include conventional "improved" rubberized asphalt, cold-poured, 2-component polymers, and preformed neoprene seals. Various sizes of step-cut joints were tried. These joints have a wider cut at the top to improve the width-to-depth ratio of the sealant. Shorter-than-normal slab lengths were also tested. Preliminary observations indicate that the improved rubberized-asphalt sealant performs better than the conventional-grade material. The cold-poured polymers were found to require careful mixing and handling to obtain satisfactory results. When properly placed, these materials also appear to provide good sealing qualities. The neoprene seals are also performing very well. Preliminary results indicate that the shorter slab lengths offer better joint seal performance and the 1/2-in. wide x 3/4-in. deep joint cut is more satisfactory than the method conventionally used.

Publication of this paper sponsored by Committee on Sealants and Fillers for Joints and Cracks. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved.

01411396

pp 24-34

1975

Transportation Research Record

54th Annual Meeting of the Transportation Research Board

0309023866

Digital/other

Figures (11) ; Photos; References (5) ; Tables (2)

Asphalt; Concrete pavements; Dimensional analysis; Excavations; Joint sealers; Joint sealing; Length; Neoprene; Paving; Performance; Polymers; Sealing compounds; Slabs; Transverse joints

Construction; Highways

TRIS, TRB

Nov 5 1975 12:00AM

• DEPTH OF CONCRETE COVER OVER BRIDGE DECK REINFORCEMENT
• DEVELOPMENT OF A SPECIFICATION TO CONTROL RIGID PAVEMENT ROUGHNESS
• NEW YORK'S EXPERIENCE WITH PLASTIC-COATED DOWELS
• PERFORMANCE EVALUATION OF UTAH'S CONCRETE PAVEMENT JOINT SEALS
• PRESTRESSED PAVEMENT DEMONSTRATION PROJECT
• SOME REFINEMENTS IN EXPANSION JOINT SYSTEMS
• THE USE OF TIME-LAPSE PHOTOGRAPHY AND COMPUTER SIMULATION FOR LOADER-TRUCK PRODUCTION STUDIES