6 Apr 1This FOP is based on ASTM C and has been modified per WSDOT standards. To view the redline modifications, contact the. WSDOT. ASTM Cpdf – Download as PDF File .pdf), Text File .txt) or read online. Qty. Model, Description. 1, Choose One: HH, Humboldt concrete rebound hammer. H, Standard concrete test hammer, type n. HLM, Light.
|Published (Last):||9 October 2006|
|PDF File Size:||7.61 Mb|
|ePub File Size:||19.15 Mb|
|Price:||Free* [*Free Regsitration Required]|
ASTM C Standard
If the rebound number if affected by the orientation of the instrument during testing, the strength relationship astm c805 applicable for the same orientation as used to obtain the astm c805 date see Note 3. Therefore, tests should be made with the same instrument in order to compare results.
Link to Active This astm c805 will always route to the current Active version of the standard. Locations where strengths are to be estimated using the developed correlation shall have similar surface texture and shall have been exposed to similar conditions as the locations where correlation cores were taken. Combining values from the two systems may result in non-conformance with the standard. Note 2 — The use of molded asfm specimens to develop a correlation may not provide a reliable relationship because the surface texture and depth of carbonation of molded astm c805 are not usually representative of the in-place concrete.
Note 3 — The use of correction factors to account for instrument orientation may reduce the astm c805 of strength estimates if the correlation is developed for a different orientation astm c805 used for testing.
ASTM C – 97 Standard Test Method for Rebound Number of Hardened Concrete NO_PDF
The functionality of the rebound hammer shall have been verified in accordance with 6. Note 1 astm c805 See ACI If more than one instrument is astm c805 be used, perform comparative tests on a range of typical concrete surfaces so as to determine the magnitude of the differences to be expected in the readings of different instruments.
It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations astm c805 to use.
These factors need to be considered in interpreting rebound numbers. Establish the relationship by correlating rebound numbers measured on the structure with the measured strengths of cores taken from corresponding locations see Astm c805 2.
At least two replicate cores shall be taken from at least six locations with different rebound numbers. Referenced Documents purchase separately The documents astm c805 below are referenced within the subject standard but are not provided as part of the standard.
Select test locations so that a wide range of rebound numbers in the structure is obtained. Astm c805 values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other.
Work Item s – proposed revisions of astm c805 standard. Historical Version s – view previous versions of standard. To use this test method to estimate strength, it is necessary to establish a relationship astm c805 strength and rebound number for a given concrete and given apparatus see Note 1.