Deprecated: Methods with the same name as their class will not be constructors in a future version of PHP; qa_layer_9_from_layer_php has a deprecated constructor in /home/abouaayt/public_html/aboutcivil/answers/qa-include/qa-base.php(720) : eval()'d code on line 3
of /home/abouaayt/public_html/aboutcivil/answers/qa-plugin/user-management/layer.php Why does the gain of compressive strength of cylindrical concrete specimen is inconsistent - Civil Engineering Technical Questions Answers - Ask a Civil Engineer
  • Register

Welcome to Aboutcivil Q&A, where you can ask questions related to Civil Engineering and receive answers from other members of the community.

Related questions

Categories

2.5k questions

1.1k answers

44 comments

44.3k users

Why does the gain of compressive strength of cylindrical concrete specimen is inconsistent

0 votes
Ma'am/Sir, I'm taking up CMT and we have observed or experiment on how does concrete gain strength over time. The 1st test(7dayconcretecuring) the specimen attain 15.78MPa compressive strength but in the 2nd test(14days) it decrease to 12.34MPa. How come it decrease? And i learn that compressive strength of concrete is increasing overtime. But the opposite happened.  Please help me answer this question ma'am/sir. Thank you.

    • Warning: count(): Parameter must be an array or an object that implements Countable in /home/abouaayt/public_html/aboutcivil/answers/qa-include/qa-base.php(720) : eval()'d code on line 12

    • Warning: count(): Parameter must be an array or an object that implements Countable in /home/abouaayt/public_html/aboutcivil/answers/qa-include/qa-base.php(720) : eval()'d code on line 12
in Concrete Technology by  

1 Answer

0 votes
It could be due to the inconsistent of the concrete that could be poured. We can not create same condition when concrete is mixed. For example, whether the sand is dry or wet affect to the strength of the concrete directly.
by  

Related questions

0 votes
0 answers 1.5k views
1.5k views
why does the IS code 456 limit the compressive strength of concrete to 0.67fck and not fck?
asked Aug 5, 2015 in Reinforced Concrete by mfby2k  
  • code

    • Warning: count(): Parameter must be an array or an object that implements Countable in /home/abouaayt/public_html/aboutcivil/answers/qa-include/qa-base.php(720) : eval()'d code on line 12
  • concrete
0 votes
1 answer 665 views
665 views
What is the high strength concrete , it's types and the punching in high strength slabs?
asked Jul 2, 2015 in Concrete Technology by mfby2k  

    Warning: count(): Parameter must be an array or an object that implements Countable in /home/abouaayt/public_html/aboutcivil/answers/qa-include/qa-base.php(720) : eval()'d code on line 12
  • strength

    • Warning: count(): Parameter must be an array or an object that implements Countable in /home/abouaayt/public_html/aboutcivil/answers/qa-include/qa-base.php(720) : eval()'d code on line 12
  • concrete

    • Warning: count(): Parameter must be an array or an object that implements Countable in /home/abouaayt/public_html/aboutcivil/answers/qa-include/qa-base.php(720) : eval()'d code on line 12
  • slab
0 votes
0 answers 520 views
520 views
WHY is compressive strength of concrete determined?
asked Jun 30, 2015 in Concrete Technology by mfby2k  

    Warning: count(): Parameter must be an array or an object that implements Countable in /home/abouaayt/public_html/aboutcivil/answers/qa-include/qa-base.php(720) : eval()'d code on line 12
  • engineering

    • Warning: count(): Parameter must be an array or an object that implements Countable in /home/abouaayt/public_html/aboutcivil/answers/qa-include/qa-base.php(720) : eval()'d code on line 12
  • civil

    • Warning: count(): Parameter must be an array or an object that implements Countable in /home/abouaayt/public_html/aboutcivil/answers/qa-include/qa-base.php(720) : eval()'d code on line 12
  • concrete
0 votes
0 answers 423 views
423 views
What is the maximum strength of the concrete by making use of variety of materials ?
asked Aug 17, 2015 in Engg. Materials by mfby2k  

    Warning: count(): Parameter must be an array or an object that implements Countable in /home/abouaayt/public_html/aboutcivil/answers/qa-include/qa-base.php(720) : eval()'d code on line 12
  • strength

    • Warning: count(): Parameter must be an array or an object that implements Countable in /home/abouaayt/public_html/aboutcivil/answers/qa-include/qa-base.php(720) : eval()'d code on line 12
  • materials

    • Warning: count(): Parameter must be an array or an object that implements Countable in /home/abouaayt/public_html/aboutcivil/answers/qa-include/qa-base.php(720) : eval()'d code on line 12
  • concrete
0 votes
1 answer 744 views
744 views
What is the standard compressive strength results for blocks of size 15cm x 15cm x 15cm formed with cement concrete 1:3:6 mixture?
asked Jul 6, 2015 in Concrete Technology by mfby2k  

    Warning: count(): Parameter must be an array or an object that implements Countable in /home/abouaayt/public_html/aboutcivil/answers/qa-include/qa-base.php(720) : eval()'d code on line 12
  • concrete
 | Snow Theme by Q2A Market
Powered by Question2Answer
...