Bonding Agents for Portland Cement Concrete and Mortar, August 1983

(1983) Bonding Agents for Portland Cement Concrete and Mortar, August 1983. Transportation, Department of

[img]
Preview
PDF
mlr8301.pdf

Download (704kB)

Abstract

Structural repairs of bridges piers and abutments require patching concrete or mortar be placed at various thickness. Whether concrete or mortar is use depends upon the depth of the patch to be made. In some instances, the use of a liquid bonding agent has been specified in the mixes as well as in a grout scrubbed onto the surface to be patched prior to the mix placement. Most of the bonding agents presently approved by the Iowa D.O.T. are polyvinyl acetate (PVA) or some type of latex. In a general discussion with a consultant about various types of bridge repair materials and processes, the subject of bonding agents was discussed at some length. It was the opinion of the consultant that the usage of polyvinyl acetates should be discontinued because of possible deterioration of this material with time. Some of these materials apparently re-emulsify in a high - moisture environment causing serious patch deterioration. As a result of this information, a study was initiated to determine the durability of these materials.

Item Type: Departmental Report
Keywords: Bonding Agents, Cement Concrete, Mortar, Transporation
Subjects: Transportation > Research > Concrete
Transportation > Research
Transportation > Roads and highways
Transportation > Design and Construction
Transportation
ID Code: 13490
Deposited By: Margaret Barr
Deposited On: 02 Aug 2012 20:04
Last Modified: 02 Aug 2012 20:04
URI: http://publications.iowa.gov/id/eprint/13490

Actions (login required)

View Item View Item