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Concrete gets harder as it ages due to a chemical process called hydration, where water reacts with cement particles to form new compounds that strengthen the material. Over time, this process continues, leading to increased strength and durability. While concrete may experience some minor surface wear or cracking, its overall structural integrity typically improves with age.
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What substance slows down the setting of cement?
Gypsum slows down the setting of cement. Although the terms cement and concrete often are used interchangeably, cement is actually an ingredient of concrete. Concrete is basically a mixture of aggregates and paste. The aggregates are sand and gravel or crushed stone; the paste is water and portland cement. Concrete gets stronger as it gets older. Portland cement is not a brand name, but the generic term for the type of cement used in virtually all concrete, just as stainless is a type of steel and sterling a type of silver. Cement comprises from 10 to 15 percent of the concrete mix, by volume. Through a process called hydration, the cement and water harden and bind the aggregates into a rocklike mass. This hardening process continues for years meaning that concrete gets stronger as it gets older. So, there is no such thing as a cement sidewalk, or a cement mixer; the proper terms are concrete sidewalk and concrete mixer.
Which synthetic polymer get harder as the number of carbon atoms in the polymer chain increase?
Polyethylene gets harder as the number of carbon atoms increases.
Does a mature stream cause little erosion?
Yes. As a stream gets older and older it's strength and speed reduces (like in humans). So, erosion is reduced.
What happens to a coastline as it gets older?
As a coastline gets older, it may experience erosion caused by natural processes such as wave action, weathering, and sea level rise. This can lead to changes in the shape and form of the coastline, including the formation of cliffs, beaches, and other coastal landforms. Additionally, sediment deposition and tectonic activity may also influence the evolution of an older coastline over time.
What happens in oceanic oceanic convergent boundary?
Either plates gets subducted which is usually the older plate.
What is a Graded Soft Touch Piano?
It is an electronic keyboard that has not fully weighted keys like a real piano, but has a softer keys. Keys are gradually gets softer touch going trough left to right. İe some harder touch at the left, gets lighter touch at the right.. Like an acoustic piano.. bass keys are harder.. treble keys are softer...
How long will mozarella keep in fridge?
If you are asking about the fresh mozzarella that is stored in liquid, that will last only a couple days. If you are asking about the low moisture cheese, it could last up to a month unopened. The older it gets, the softer it becomes which makes it harder to slice or shred.
Why does bread get harder when it gets stale but a cracker gets softer?
Bread contains moisture and dries out as it ages, while crackers are dry and absorb moisture. Both will even out to the atmospheric humidity level of the room they are in.
What is the primary disadvantage of hard steel?
As steel gets harder, it also gets less flexible.
Does cold days loose the Formula 1 tires grip better?
No, as temperature rises the rubber gets softer and "stickier". On a colder day the rubber is slightly harder and does not grip as well.
What is cognitive conservatism?
Cognitive conservatism is a psychological phenomena whereby it is harder to change a belief once you have it. This gets more severe as you get older.
Why does cooking a food change its hardness?
Heat can make and break chemical bonds. If something gets softer when heated (e.g. ice to water) the bonds are weakened or broken. If when heated it gets harder (e.g sauce that thickens) then the bonds are strengthened or created
What is the name when music gets louder or softer?
There is no single name for louder OR softer, they are 2 different musical terms.
Which is the most difficault subject in school?
its MATH because it is really hard. in elamentry school its easy but in 6th grde and above it gets harder the older the grades are:)
Is it harder to stretch the foreskin the older you are?
Yes, it can be harder to stretch the foreskin as one gets older. This is due to factors such as decreased skin elasticity and the development of scar tissue or adhesions that may occur over time. Additionally, older individuals may have more discomfort or resistance to stretching compared to younger individuals. However, individual experiences can vary widely.
Why is it that when a football is blown until it is hard on a hot summer day and then in the evening the football feels softer?
The air inside the football expands in the heat, causing it to become harder. When the football cools down in the evening, the air inside contracts, making the football feel softer. Temperature changes can influence the pressure of the air inside the football, impacting its firmness.
Why are participants at risk of injury in sport?
When you get older, you become less capable of doing things. Running gets harder, lots of things get harder. Your bones get weaker.
