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A structure usually made of cement or rock which extends perpendicular to the shore to trap sand is known as a what?
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What is stronger concrete or cement?
Concrete is stronger than cement.It is composed of aggregates (sand and gravel) and cement; and may be cast with reinforcing bar within it (reinforced concrete). Cement is only a part of concrete. Cement has no tensile strength while concrete has compressive and tensile strength.
What is plastic cement used for?
Plastic cement is usually used to repair cracks in plaster, wood, chipped tiles, etc.
Why is cement so strong?
Cement is strong because is it's molecular structure means it links together under tension, but will come apart easily if pulled length-ways.
What is initial setting time of cement?
It's the time from which cement starts the setting process after water is added.. Usually it is 30 min.. It can be delayed or advanced using chemicals..
What is the difference between cement and grout?
Grout is a substance that is used to fill gaps between tiles, such as in a shower or bathroom. Grout may be made of small aggregate, sand, and Portland cement. It may also be made of Portland cement or masonry cement and sand. There are many different types of cement, and these are usually used as an ingredient with which to make concrete and mortar.
What is cement grouting?
cement grouting is the process of injecting the cement slurry in to the engineering structures to stabilize the structure.
What is cement bucket?
A bucket that holds cement or concrete, usually hoisted by a crane.
What is stronger concrete or cement?
Concrete is stronger than cement.It is composed of aggregates (sand and gravel) and cement; and may be cast with reinforcing bar within it (reinforced concrete). Cement is only a part of concrete. Cement has no tensile strength while concrete has compressive and tensile strength.
What happens when cement freezes?
When cement freezes, the water in the mixture forms ice crystals, expanding and disrupting the concrete's internal structure. This can result in cracking, weakening the cement and reducing its durability. Thawing and re-hardening of cement can further exacerbate damage.
Why is cement a solid?
Cement is a solid because its particles are closely packed together in a crystalline structure. This arrangement gives cement its rigidity and strength, allowing it to hold its shape and bear loads as a solid material.
How cement get hard?
Cement hardens through a chemical process called hydration, where water reacts with the compounds in the cement to form crystals. This process creates a strong and durable bond between the cement particles, resulting in a solid and hardened structure. Factors such as water-to-cement ratio, temperature, and curing time can affect the strength and durability of the hardened cement.
Why folding motion is used for mixing glass ionomer cement?
to preserve the gel structure
Why does cement solidify?
Cement solidifies through a chemical process called hydration, where water reacts with the compounds in the cement mixture to form a solid structure. This process creates strong bonds between the cement particles, resulting in a solidified mass that hardens over time.
What is cement how it is made and types of cement construction?
Portland cement is made by heating limestone and driving water from its crystalline structure to produce calcium carbonate half hydrate which is a powder. Once water is added it reincorporates into the crystalline structure making it hard again. It also contains between 5 and 20% fly ash or clay.
Cement hardening an example of melting?
Cement hardening is not an example of melting. Melting involves a substance changing from a solid to a liquid state due to heat, while cement hardening is a chemical process where the cement mixture reacts and forms bonds to create a rigid solid structure.
What is plastic cement used for?
Plastic cement is usually used to repair cracks in plaster, wood, chipped tiles, etc.
What is the different between ordinary Portland cement and Portland cement?
Ordinary Portland cement is the most common cement used in the world, made from stucco, concrete, mortar and other materials. Slag cement is usually mixed with Portland cement and is the substance leftover after metal has been smelted from raw ore.
