MATERIALS (CEMENT & AGGREGATES, CHAPTER 4.2 &4.3)

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FINAL EXAMINATION

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Grace Balahay

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MATERIALS (CEMENT & AGGREGATES, CHAPTER 4.2 &4.3)


MATERIALS (CEMENT & AGGREGATES, CHAPTER 4.2 &4.3)Version en ligne FINAL EXAMINATION par Grace Balahay 1 is a binding substance used in construction that sets, hardens and adheres to other materials to bind them together. Written answer 2 a bonding agent that reacts with water to form a hard stone-like substance that is resistant to disintegration in water. Written answer 3 is used to stop water and leaks in concrete and masonry structures. It is a type of cement, similar to mortar, that sets extremely fast and hardens after it has been mixed with water Written answer 4 not a brand of cement but a type of hydraulic cement. It is the most widely used cement in various small and large construction projects. Written answer 5 The name “portland” was given by ______, a brick layer from Leeds, England in 1824, to a hydraulic lime that he patented because it resembled a natural limestone quarried on the island of Portland, England Written answer 6 is the heat released when cement reacts with water during the formation of concrete Written answer 7 is a general-purpose cement, which is adequate for most uses, except those which require the special properties of other types. It has an adequate strength and a low heat of hydration Written answer 8 has the same uses as Type I, along with a moderate resistance to sulfates. It generates only a moderate heat of hydration, and at a lesser rate. It is ideal for applications where the concrete comes into contact with soils or groundwater having some amount of sulfate ions, though not excessively high. Written answer 9 cement is chemically almost identical to Type I, though it has a lesser curing time, which means it hardens faster. It is also ground finer, and contains a higher amount of C3S, both of which promote the rapid setting of concrete. This type imparts strength faster than Type I, typically in less than a weeks time, though its final 28-day strength may be equal, if not lesser Written answer 10 This type of Portland cement is designed to reduce the heat released during hydration. This is achieved by reducing the percentage of C3A in the cement. However, this type has a lower final and initial strength as compared to Type I Written answer 11 is almost similar to Type II, except that it is even more tolerant to the attack of sulfate ions. This is achieved by reducing the C3A percentage even lower to 5%. So, it is suitable for buried concrete structures, where the soil or groundwater is rich in sulfate ions. Written answer 12 an amorphous silica that hardens as a silica gel by reacting chemically with alkali in the presnence of water. Written answer 13 A material, other than water, aggregate or portland cement, which is used as an ingredient in concrete and is added to the batch immediately before or during its mixing Written answer 14 is an inert material mixed with cement and water to form mortar, plaster or concrete Written answer 15 particles retained by sieve #4 (4.76mm Ø). Written answer 16 composed of small round stones. A popular choice for walkways in parks, backyards or asphalt driveways Written answer 17 typically made from limestone or granite using a stone crusher. Often used in residential or commercial landscaping Written answer 18 contains a mix of stone dust and crushed stone. Typically used in asphalt driveways Written answer 19 the product of the natural disintegration of silica-bearing or calciumbearing rock Written answer

MATERIALS (CEMENT & AGGREGATES, CHAPTER 4.2 &4.3)

Test

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Créé par

Téléchargez la version pour jouer sur papier

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MATERIALS (CEMENT & AGGREGATES, CHAPTER 4.2 &4.3)Version en ligne

par Grace Balahay

is a binding substance used in construction that sets, hardens and adheres to other materials to bind them together.

a bonding agent that reacts with water to form a hard stone-like substance that is resistant to disintegration in water.

is used to stop water and leaks in concrete and masonry structures. It is a type of cement, similar to mortar, that sets extremely fast and hardens after it has been mixed with water

not a brand of cement but a type of hydraulic cement. It is the most widely used cement in various small and large construction projects.

The name “portland” was given by ______, a brick layer from Leeds, England in 1824, to a hydraulic lime that he patented because it resembled a natural limestone quarried on the island of Portland, England

is the heat released when cement reacts with water during the formation of concrete

is a general-purpose cement, which is adequate for most uses, except those which require the special properties of other types. It has an adequate strength and a low heat of hydration

This type of Portland cement is designed to reduce the heat released during hydration. This is achieved by reducing the percentage of C3A in the cement. However, this type has a lower final and initial strength as compared to Type I

is almost similar to Type II, except that it is even more tolerant to the attack of sulfate ions. This is achieved by reducing the C3A percentage even lower to 5%. So, it is suitable for buried concrete structures, where the soil or groundwater is rich in sulfate ions.

an amorphous silica that hardens as a silica gel by reacting chemically with alkali in the presnence of water.

A material, other than water, aggregate or portland cement, which is used as an ingredient in concrete and is added to the batch immediately before or during its mixing

is an inert material mixed with cement and water to form mortar, plaster or concrete

particles retained by sieve #4 (4.76mm Ø).

composed of small round stones. A popular choice for walkways in parks, backyards or asphalt driveways

typically made from limestone or granite using a stone crusher. Often used in residential or commercial landscaping

contains a mix of stone dust and crushed stone. Typically used in asphalt driveways

the product of the natural disintegration of silica-bearing or calciumbearing rock