Bonding between Cement Hydrates and Steel.

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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

Author(s):
Schnittgrund, G. D. ; Scott, J. K.
Author Organization(s):
CONSTRUCTION ENGINEERING RESEARCH LAB (ARMY) CHAMPAIGN ILL
Descriptive Note:
Final rept.,
Supplementary Note:
Doctoral thesis.
Pagination:
0055

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
CERL-Technical-Ms-M-176
Task Number(s):
4A162121A89702
Project Number(s):
DA-4-A-162121-A-897
 Subject Terms
Communities of Interest:
No COI(s) Identified
Descriptor(s):
*STEEL, *CEMENTS, *BONDING, TENSILE STRENGTH, ALUMINUM COMPOUNDS, INTERFACES, HYDRATES, ELECTRON MICROSCOPY, CALCIUM COMPOUNDS, SILICATES, FERRITES
Field(s)/Group(s):
Ceramics, Refractories and Glass, Fabrication Metallurgy, Civil Engineering, Construction Equipment, Materials and Supplies, Structural Engineering and Building Technology
Keyword(s):
Portland cement
Report Date:
1976 Jan 01