Patching and Grouting Materials for Portland Cement Concrete.

摘要

The report covers work done on evaluation of 19commercial products sold as portland cement concrete patching compounds as compared to Type III cement mortar. These products had fast setting and early strength gain characteristics. The properties tested included set time,expansion when soaked 24hours,drying shrinkage,percent chlorides,percent sulfate,abrasion resistance and compressive strength at one hour, 4hours,one day, 3days and 28days. Several compounds were tested for corrosion properties when used in contact with reinforcing steel. In addition, 15of the products were placed in a field installation in the wheel path in the heavily traveled lane where they were subjected to freezing-thawing,snow,tire-chain traffic,and summer traffic. This field installation was evaluated after one year of service. (Author)