O II O Iv

Q: i. How and why do we test ii. What does it tell us about the mix iii. What is expected to happen…

A: Compressive strength is a very important property of materials and structures. It measures the…

Q: design a concrete mix to make 9 m3 of fresh concrete the concrete is located near the sea select the…

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Q: Concrete was mixed with the following ingredients: 20.7 kg of cement, 39.2 kg of sand,60.9 kg of…

A: Given Data: The weight of cement in the concrete mix is Cw=20.7 kg. The weight of sand in the…

Q: The approximate ratio between the strengths of cement concrete at 7 days and at 28 days is (a) 3/4…

A: The approximate ratio between the strength of cement concrete at 7 day and at 28 days is  2/3

Q: Rate of Tricalcium silicate (C3S) is higher in Type III cement.

A: Given statement: Rate of Tricalcium silicate (C3S) is higher in type III cement.   Tricalcium…

Q: 7.8 Design the concrete mix according to the following conditions: Design Environment Building frame…

A: Calculate required strength Assume S = 2.1 Mpa Calculate the value of fcrfcr = fc + 1.34S= 30.4…

Q: (a) One of the advantages of concrete is its high strength to weight ratio compared to other…

A: Note: Hi! Thank you for the question, As per the honour code, we are allowed to answer three…

Q: Concrete is required for walls of a building that will be Mild Exposed to freezing and thawing. The…

A: Given data:- Cross-section of a wall is 300×1500 mm Spacing between the reinforcing steel is 50 mm…

Q: Which one of the following aggregates gives maximum strength in concrete? (a) Rounded aggregate b)…

A: Elongated aggregate have more length . Flaky aggregate are very think . Rounded aggregate have not…

Q: Design a concrete mix for the following conditions and constraints using the absolute volume method:…

A: Given :- Required design strength = 27.6 MPa Minimum dimension = 150 mm Minimum space between rebars…

Q: Contraction joints: ON All of the above O B) Allow the concrete to move both horizontally and…

A: The contraction joint: A contraction joint is a weakened vertical plane created by a sawed, formed,…

Q: The raw materials used in Portland Cement production are:

A: Portland cement: Portland cement is a calcium silicate cement made by firing a well-homogenized and…

Q: Using cement chemistry notation what is the hydrated cement phase MAINLY responsible for strength…

A: When water is added to cement many reactions take place between cement components and water.…

Q: Chapter 13 Question: What is the elasticity of concrete for a normal weight mix (unit weight equal…

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Q: This refers to a change from liquid state to solid state of cement paste

A: Setting is the process in which cement concretee starts solidifying and gaining strength. Curing is…

Q: Explain why shape, surface texture, and gradation are more important for aggregate use in normal…

A: Aggregates is useful in construction as a major material for the proper mix of concrete and strength…

Q: Design the concrete mix according to the following conditions:  Design environment Tennis court,…

A: Solution: As per the given requirement

Q: Concrete is required for a column that will be Severe exposed to freezing and thawing. The cross…

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Q: Lightweight Concrete Present and Future applications

A: Solution: When the mixture of cement is combined with fine or lightweight aggregates, the concrete…

Types of Cement

Cement is a fine mixture of limestone, chalk, or marl and clay which when mixed with water, becomes compacted due to the formation of strong molecular bonds. Due to hydration, cement turns into a hard mass when left for a sufficient amount of time upon mixing with water. The water turns the cement compounds into gel-like submicroscopic particles having higher surface areas. It is due to the hydration properties of cement, they are often known as hydraulic cement. For instance, Portland cement is a popular example in this category.