Accession Number:

ADA021651

Title:

Bonding between Cement Hydrates and Steel.

Descriptive Note:

Final rept.,

Corporate Author:

CONSTRUCTION ENGINEERING RESEARCH LAB (ARMY) CHAMPAIGN ILL

Personal Author(s):

• Schnittgrund,G. D.
• Scott,J. K.

Report Date:

1976-01-01

Pagination or Media Count:

55.0

Abstract:

The bonding mechanics of steel to portland cement and its constituent compounds were studied by testing composite steelpaste 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 steelpaste interface. Author

Descriptors:

• *STEEL
• *CEMENTS
• *BONDING
• TENSILE STRENGTH
• ALUMINUM COMPOUNDS
• INTERFACES
• HYDRATES
• ELECTRON MICROSCOPY
• CALCIUM COMPOUNDS
• SILICATES
• FERRITES

Subject Categories:

• Ceramics, Refractories and Glass
• Fabrication Metallurgy
• Civil Engineering
• Construction Equipment, Materials and Supplies
• Structural Engineering and Building Technology

Distribution Statement:

APPROVED FOR PUBLIC RELEASE