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Too much water in the concrete mix results in ultimate weakness in the cured concrete because the extra water takes up space. When the extra water dries out in the course of a few days, there is nothing in the mix that can take its place, so the concrete is slightly sponge-like.
Too much water in the mix can also cause too much cement paste to rise to the surface during finishing, resulting in later plate spalling from the freeze-thaw cycle.
If there is really too much water, the mix may be thin enough to run downhill and not stay in the forms in, say, a sidewalk pour.
It takes little water to allow concrete to chemically cure to full rated strength. Many structural jobs are placed with 2" or even 1-1/2" slump. Of course, the exposed surface will be ultimately weak unless measure are taken to keep it wet during the curing period.
Wiki User
∙ 13y ago
Wiki User
∙ 9y agoA low slump indicates too much water in the concrete. A mix with excess water will result in a weakness of the cured concrete.
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When a rock suddenly falls of a cliff is it a slump or creep?
slump
Why does slump occurs?
Conditions needed: Soft rock needs to be saturated by heavy rain/Sea water/or undercut by waves which break down the rock particles. Process: Soft rock at the base of the cliff erodes away more quickly leaving nothing to support the hard rock on top, so it slides down leaving the land uneven at the coast to create almost a stair effect. Rainfall also quickens the process by eroding the soft rock.
Landslides and slump are forms of what?
Mass movement
What is the name of the geomorphic landform that identifies a slump?
surface creep
What are landslides mudflow slump and creep examples of?
mass movement
What does a slump mean in concrete?
The term slump used in concrete means the thickness or thinness of the concrete. The slump is measured by filling a 12" cylinder up with concrete, then flipping it over and pulling the cylinder up. The distance the concrete "slumps" down from the top of the cylinder is the slump for that concrete. For example, if the concrete falls 6" from the top of the cylinder, that concrete is on a 6" slump.
What must be the slump value for different grade of concrete?
what is the slump value for M20 concrete
What are the slump types which can be occurred in concrete?
ture slump
Which concrete has 6.5cm slump?
dry concrete
What is the importance of slump test in concrete work?
The importance of slump test in concrete work is to ensure consistency in the concrete. The test measures the workability of the concrete.
What the importance of slump test in concrete work?
The importance of slump test in concrete work is to ensure consistency in the concrete. The test measures the workability of the concrete.
When is a slump likely to occur?
Slumps often occur when water soaks in the base of a hill with high clay content.
How do you increase slump in concrete?
If you are using a traditional concrete mix you can increase the slump by increasing the water you add.
What is a concrete slump test?
The concrete slump test is used to measure an aspect of concrete. This test is used to measure the workable of concrete as well as its freshness and health.
What is slump of concrete?
50mm
What is a slump cylinder?
When dealing with conrete the "slump" refers to how much will a sample sag, reduce in height in a given time frame. re: a 5" slump means that after removing the CYLINDER the concrete will lose 5 inches of elevation. The slump cylinder is the tool used to determine the slump of concrete.
What are required slump height of M20 for different concrete structure?
Required slump height of M20 for different concrete structures, are normally calculated by the required slump value, which would come out to be 100 lits.
