BONDING BETWEEN CEMENT HYDRATES AND STEEL
The bonding mechanics of steel to portland cement and its constituent compounds were studied by testing composite steel/paste bars in flexure. The interface was subsequently examined by scanning electron microscopy. Type I portland cement, tricalcium silicate, dicalcium silicate, and tetracalcium aluminoferrite exhibited strong bonding to low carbon steel; tricalcium aluminate demonstrated no measurable bond strength. The primary bonding mechanism between alite paste and steel was found to be chemical in nature. No significant influence of the surface roughness of the steel on the tensile bond strength to alite paste could be established. The weak link in the steel paste bar was a high water content region concentrated near the steel/paste interface. (Author)
- Doctoral thesis.
Army Construction Engineering Research LaboratoryP.O. Box 4005
Champaign, IL United States 61820
- Schnittgrund, G D
- Scott, J K
- Publication Date: 1976-1
- Pagination: 55 p.
- TRT Terms: Aluminum compounds; Bonding; Calcium compounds; Cement; Electron microscopes; Electron microscopy; Ferrites; Flexure; Hydrates; Interfaces; Moisture content; Portland cement; Silicates; Steel; Tensile strength; Testing
- Subject Areas: Geotechnology; Highways; Materials;
- Accession Number: 00094732
- Record Type: Publication
- Source Agency: National Technical Information Service
- Report/Paper Numbers: CERL-Tech-MS-M-176 Final Rpt.
- Files: TRIS
- Created Date: May 14 1977 12:00AM