A survey on the use of penetrating sealers for portland cement and concrete was conducted by distributing questionnaires to all u.S.And several canadian highway agencies. Information was obtained on applications of penetrating sealers, extent of use, qualification ofsealers and test procedures used, and problems of application and performance. Although the survey results indicated much interest by highway agencies in using penetrating sealers, applications are limited. Linseed oil is widely used in many localities. Results also indicated that test procedures used to qualify sealers vary widely amongagencies, with some agencies relying on data supplied by vendors oron results of testing carried out by other organizations. There is currently little activity related to in-place field testing of penetrating sealers. This paper appears in transportation research board record no. 1284, Cement, admixtures, and concrete 1990.
Samenvatting