Mechanical Properties of Concrete Pavement

Mechanical properties of concrete pavement at different temperature (cube experiment)

Lab work has been carried out, two kind of test (C₃₅ grade concrete was used)

• Schmidt hammer test
• Hydraulic compression test

Compare two methods of results, in terms of accuracy. Both methods are important. Certain temperature cube can’t get 100% strength why is that explain

17 cube has been constructed and put it different temperature. After 28 days experiment has been conducted. First test on Schmidt hammer all the cubes which are non- destructive method and obtained the results (compressive strength). 2^nd test is hydraulic compression test (crushed strength) which also got compressive strength at all the cubes at different temperature.

Schmidt hammer and Hydraulic compression test (28 days cube) %.

Temperature	No. of cube	Schmidt hammer fc (%)	Hydraulic com. fc (%)
	1	83.8%	84.57%
00	2	89.52%	103.42%
	3	85.72%	87.42%
	1	52.38%	42.57%
-150	2	52.85%	42%
	3	51.42%	46.28%
	1	100%	85.42%
400	2	99.52%	84%
	3	98.57%	85.42%
	1	105.23%	104.58%
Sub-merged in water	2	106.65%	110.57%
	3	104.77%	112.85%
	1	103.35%	94.57%
	2	105.22%	84.85%
230	3	102.37%	92%
	4	104.28%	89.14%
	5	103.34%	92.58%

 

• O degree Compare two test

Discussion: 250 words

 

• -15 degree compare two test

       Discussion: 250 words

 

• 40 degree (oven) compare two test

       Discussion: 250 words

 

• Sub-merged in water compare two test

       Discussion: 450 words

 

• Room temperature 23 degree compare two test

       Discussion: 450 words

 

 

Weight of concrete cube at different temperature (28 days cube) before test carried out

Description	Average weight of cube (kg)
O0 temperature	2.33
-150 temperature	2.33
400 temperature	2.66
Sub-merged in water	2.38
Room temperature at 230	2.31

 

• Discuss why weight difference at different temperature? Write about 150 words

 

• Normal behavior of cube after crushed (all the cube at different temperature)

Discussion: 200 words

 

Conclusion: