Rebound Hammer Test Worksheet Page 3
ADVERTISEMENT
1
2
3
4SD 409
Page 3
H.
Calculate the orientation corrected compressive strength by adding the
appropriate orientation correction factor (E) according to the
orientation of the test hammer during the testing. (F) = (D) + (E)
Horizontal:
Correction
–
None
Vertical Up:
Correction
–
Minus 500 PSI (3400 kPa)
Vertical Down:
Correction
–
Plus 500 PSI (3400 kPa)
Vertical Up
Horizontal
Vertical Down
I.
Calculate the final compressive strength (H) by multiply the orientation
corrected compressive strength (F) by the field correction factor (G)
that was calculated in 3.2B(4).
(H) = (F) x (G)
NOTE: During the concrete cylinder comparison calibration test
this should equal the initial compressive strength of the cylinder
(A) ± 0.5%.
4.
Report:
Report the PSI (kPa) corrected to 28 days on a DOT-9.
5.
References:
SD 420
DOT-9
mso.mat 9-14
ADVERTISEMENT
0 votes
Related Articles
Related forms
Related Categories
Parent category: Business