ACI Lab Level 2 - ASTM C157 Length Change of Concrete (Shrinkage) - CRMCA Online Concrete Procedures
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- Опубликовано: 14 окт 2020
- CRMCA presents the Online Concrete Procedures for preparing for ACI certifications.
ASTM C157 / C157M - Standard Test Method for Length Change of Hardened Hydraulic-Cement Mortar and Concrete
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CRMCA website: www.crmca.org/
CRMCA Registration for ACI: www.crmca.org/american-concre...
ACI website: www.concrete.org/
ASTM website: www.astm.org/
ACI Reference for Modifications to C157 (2018): • Modification to ASTM C...
The video at time 11:29 minute, How the shrinkage percentage value is calculated? Please explain..
Could you possibly inform me what value should be substituted if the gauge length is not 250mm (10 in.)?
Thanks for this video. It arrived just in time.
We are glad to be there just in time for you! Hope it helps in the process.
Thanks for sharing.
The % shrinkage looks incorrect.. or am i getting it wrong?
I think your information is incorrect in your initial information in respects to consolidation. Although at 4:01 the reference to ASTM C192 is correct C192 does not give us a range for consolidation per lift it would be a flat 30 or 40 rods depending on the size of the mold. There should also be a range of 10-15 taps with a mallet as noted in C192. Although the video did help understand the test method in general. I thank you for many clarifications.
Thank you for the note. We will review for our update soon!
awlla video