Question 288 · LDEK · Bridges
In case of metal based adhesive bridges, in order to achieve beter connection of metal with fixing cement, mechanic methods of expanding the surface may be used. Such methods include:
1) tinning;
2) abrasive blasting;
3) pitting corrosion;
4) electrochemical etching;
5) silicatisation.
The correct answer is:
2) abrasive blasting;
3) pitting corrosion;
4) electrochemical etching;
5) silicatisation.
The correct answer is:
- A. 1,2,3.
- B. 2,3,4.
- C. 1,3,4.
- D. 1,4,5.
- E. 3,4,5.
Hint
Separate methods that physically roughen or etch the metal from those that create a chemically bondable layer.
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