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If the question means: "can new concrete or mortar be put on top of old concrete", for example to restore a reinforced concrete structure, the answer is NO.
You will have to use proprietary non shrinking cementitious mortars (say Emaco or similar), otherwise the patch will fall to the ground !
vAR - Roma, Italy
Yes you can! However first check the pH of the concrete to insure it is no higher than the number 9ph. If pH is between 7.5 and 9ph you are ready to repair. Apply a densifier to the concrete and resurface with a high performance repair material or overlay.
JH Super-Krete
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∙ 12y ago
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Why are test on cement necessary in cement plant?
To ensure it complies with the specifications for the type of cement and the use to which it is put.
What is the difference between concrete mortar and cement paste?
Cement paste is formed when cement is mixed with water. However, cement mortar is formed when cement is mixed with fine aggregate (sand) and water.The strength of cement mortar is more when compared to cement paste.Shrinkage will be less in cement mortar and high in cement paste.
How do you you pump a balanced cement plug?
Balanced cement plug is pumped through drill string or open-ended tubing. 'Balanced Cement Plug' means that the top of cement outside the drillstring/ tubing will be the same height as the top of cement inside the drillstring at the end of pumping. The drillstring/ tubing is then slowly pulled from the wet cement, allowing the cement inside the string to fill the centre of the plug. There are lots of refinements in this method with open hole cement retainers or high viscosity 'cushions' often placed below cement. In vertical hole, most balanced plugs are successful. In extended reach wells, failure rates can be high with cement slumping and mixing with synthetic based muds. A typical checklist to improve cement plug success in extended reach wells would have: 1. Always use a tailpipe. This reduces the disruption to the plug caused by removal of the drillstring. 2. Clean up the hole thoroughly before pumping cement. Cement is an excellent hole cleaner. Many 'flash set' events reported are really packoffs caused by cement picking up a cuttings dune. 3. Put a diverter tool with BIG holes on the bottom of the tailpipe. This directs fluids up the hole during cementing 4. Use a scavenger spacer in front of the cement job to convert the formation from oil wet to water wet. 5. Slow down pumping to 1 BPM while displacing cement into open hole. This reduces mixing of cement and mud. 6. Put a cushion below the cement plug. A cement retainer is best. If a viscous cushion is spotted, weight the cushion to 1 ppg below the cement weight. 7. Gravity is NOT on your side. Cement can stay inside the tail pipe as you pull it from the plug. Pump the volume of cement inside the tailpipe as you pull the tailpipe from the plug. 8. Circulate clean the long way with the bottom of the tailpipe at the planned cement plug top.
Can you separate water from cement?
no not if it is put together
What is the difference between cement paste and mortar?
Cement paste is formed when cement is mixed with water.Cement mortar is formed when cement is mixed with fine aggregate (sand) and water.The strength of cement mortar is more when compared to cement paste.Shrinkage will be less in cement mortar and high in cement paste.
Top 10 cement companies in world?
which are top 100 cement companies in the world
What can you put in cement to not allow the cement to set up?
release
Why are tests on cement necessary in cement plant?
To ensure it complies with the specifications for the type of cement and the use to which it is put.
Why are test on cement necessary in cement plant?
To ensure it complies with the specifications for the type of cement and the use to which it is put.
What type of cement should you use to put posts into the ground?
ppc cement
Why do you make walls with bricks?
you put cement down then bricks then cement then bricks. etc.
Why do you fill volcano with cement?
they put cement because i very hard the streets are made out of cement and u can brake it and the magma would not come out
Describe the challenges and opportunities you see in the global cement industry today that you feel should be top of mind for the leadership team members at a top 20 cement company?
The challenges in the global cement industry today include carbon dioxide emission and cement sustainability, while the opportunities include green cement production.
Is it easier to run on grass or cement?
cement cement it is easier to run on cement cement
What is a sentence using the word cement?
Let's put our handprints in the wet cement, just like they do in Hollywood! The wet cement is being closely guarded from impressionists.
Why is there a foul smell coming from the patch you used contact cement on?
If it's a different foul smell than the contact cement itself, you've got a reaction between the cement (or more precisely, the solvent in the cement) and the item you put it on.
What is the difference between concrete mortar and cement paste?
Cement paste is formed when cement is mixed with water. However, cement mortar is formed when cement is mixed with fine aggregate (sand) and water.The strength of cement mortar is more when compared to cement paste.Shrinkage will be less in cement mortar and high in cement paste.
