ASTM C 39/C 39M by https://padlet.com/andresito_30_05/oia3qk36lrptfjn2 ARCE ZEVALLOS STEPHANO SALAZAR SILVA JULIO en-us 2021-11-23 20:43:05 UTC 2025-09-30 13:13:25 UTC hello@padlet.com Apparatus stephanoarcez https://padlet.com/andresito_30_05/oia3qk36lrptfjn2/wish/1909268763 - Testing Machine. 
- Verification of calibration of the testing machines in accordance with Practices E 4. 
- On original installation or relocation of the machine. 
- Whenever there is reason to doubt the accuracy of the results. ]]> 2021-11-23 20:50:24 UTC https://padlet.com/andresito_30_05/oia3qk36lrptfjn2/wish/1909268763 Scope stephanoarcez https://padlet.com/andresito_30_05/oia3qk36lrptfjn2/wish/1909273221 This test method covers determination of compressive strength of cylindrical concrete specimens such as molded cylinders and drilled cores.
The values stated in either inch-pound or SI units are to be regarded separately as standard  ]]> 2021-11-23 20:54:13 UTC https://padlet.com/andresito_30_05/oia3qk36lrptfjn2/wish/1909273221 Significance and Use stephanoarcez https://padlet.com/andresito_30_05/oia3qk36lrptfjn2/wish/1909275787 Care should be taken in interpreting the importance of compression strength determinations by this method test as force is not a fundamental or intrinsic property of concrete made from given materials.]]> 2021-11-23 20:56:41 UTC https://padlet.com/andresito_30_05/oia3qk36lrptfjn2/wish/1909275787 andresito_30_05 https://padlet.com/andresito_30_05/oia3qk36lrptfjn2/wish/1909276169 2021-11-23 20:57:04 UTC https://padlet.com/andresito_30_05/oia3qk36lrptfjn2/wish/1909276169 Procedure stephanoarcez https://padlet.com/andresito_30_05/oia3qk36lrptfjn2/wish/1909279728 - Compression tests of moist-cured specimens shall be made as soon as practicable after removal from moist storage. 
- Test specimens shall be kept moist by any convenient method during the period between removal from moist storage and testing. 
- All test specimens for a given test age shall be broken within the permissible time tolerances prescribed as follows: ]]> 2021-11-23 21:00:37 UTC https://padlet.com/andresito_30_05/oia3qk36lrptfjn2/wish/1909279728 andresito_30_05 https://padlet.com/andresito_30_05/oia3qk36lrptfjn2/wish/1909280444 2021-11-23 21:01:21 UTC https://padlet.com/andresito_30_05/oia3qk36lrptfjn2/wish/1909280444 Diference to C-31 / C-39 stephanoarcez https://padlet.com/andresito_30_05/oia3qk36lrptfjn2/wish/1909282702 The C-31 practice provides standardized requirements for making, curing, protecting and transport of concrete test samples under field conditions, And the C-39 method is used to determine compression concentration of cylindrical specimens prepared and cured in accordance with practices C 31, C 192, C 617 and C 1231 and testing Methods C 42 and C 873]]> 2021-11-23 21:03:40 UTC https://padlet.com/andresito_30_05/oia3qk36lrptfjn2/wish/1909282702