In comparison between using prestressed concrete or using regular reinforced concrete for long spans in bridges, which statement is incorrect? Why? Explain your answer in the detailed solution.

Q: Understand the many types of concrete admixtures and how they affect the concrete.

A: Introduction: Producers firstly use admixtures to lower the cost of concrete construction, adjust…

Q: Differentiate between plain and reinforced concrete; why concrete is reinforced?

A: Plain concrete: Called PCC(plain cement concrete) It is simply known as concrete which is made of…

Q: Write down the objectives of Design of Concrete Structure II?

A:

Q: For a given strength (f'c), other than cost/availability, what is a structural-related disadvantage…

A: This question is related to the Concrete Technology from the civil engineering.In this question ask…

Q: Define the concrete terminologies below: i. High strength concrete ii. High performance concrete…

A: High strength concrete High performance concrete  Green concrete

Q: Discuss the different types of concrete. a. Plain concrete vs reinforced concrete b.…

A:

Q: Which strain and stress profiles shown in the figure below best represent a reinforced concrete…

A: To explain the nature of diagrams in strain and stress conditions for a reinforced concrete in…

Q: A short plain concrete column with dimensions of 300 mm X300 mm X 900 mm is to be constructed. If…

A: Given data in question  Dimensions of short column Stress Factor of safety To find out  Maximum load…

Q: define the “shrinkage” problem for reinforced concrete members. What are the structural results of…

A: Shrinkage is defined as  "shortening of Concrete due to drying". This causes extra stresses in the…

Q: How does the innovation of fiber reinforced concrete provides advancement in the construction…

A: Fiber reinforced concrete is light in weight as a result dead load of the structure reduced  The…

Q: Can a concrete structure be completely free of expansion joints and contraction joints?

A: It can be considered that the concrete structures are not subject to differential settlement. The…

Q: What is lightweight concrete, and how does it work? What are the uses of lightweight concrete that…

A:

Q: What are the alternatives available to conventional concrete? Explain them in detail.

A: Concrete is most widely used material in world for construction purpose due to its properties.Due to…

Q: How do you conduct the flexural strength of concrete ? Show a sketch

A: The flexural strength test is performed on a flexural strength machine using three point method. Use…

Q: Can grout replace concrete in normal structure?

A: The grout is the mixture of cement, water and sand. The main purposes of grouting are pasting tiles,…

Q: Generally, compressive strength normally considers in all stages in our designs. Explain and state…

A: Brief concept- There are different kinds of engineering strengths that affect the design process of…

Q: discuss five specific advantages of concrete structures in building from environmental point of…

A: Concrete: the combination of cement, fine aggregate, coarse aggregate and water is known as…

Q: What are the advantages and disadvantages of reinforced concrete as structural materials?

A: Reinforced concrete (RCC) is a widely used structural material that is made up of concrete and steel…

Q: A precast concrete has a section as shown in Figure 1. Calculate the folloa sectional properties of…

A: As per guidelines we need to answer only first 3 subparts

Q: What are the advantages of incorporating distributed steel fibres into standard concrete?

A: Advantages:-  The Reinforcing concrete with incorporating the distributed Steel fibres will provide…

Q: Discuss the differences between pre-tensioned and posttensioned structural concrete units?

A: Prestress concrete is defined as the concrete in which internal stress of suitable magnitude and…

Q: What types of fibers are used in the production of fiber-reinforced concrete?

A: Following  are the various types of fibres used in fiber reinforced concrete  (FRC) production. 1.…

Q: Compare and contrast the differences between non-pre-stressed structural units versus pre-tensioned…

A: Non-pre-stressed units:- In engineering, reinforced concrete is a composite. By including…

Q: Estimate the modulus of elasticity for concrete with a density of 120 lb/ft3 and a 28-day maximum…

A: Given data,  Density of concrete = 120 lb/ft³ Maximum compressive strength of concrete (fc)…

Q: For long spans in bridges, using prestressed concrete is usually more suitable than regular…

A: Prestressed concrete is the special form of concrete which is prestressed during its manufacturing…

Q: How many pounds of concrete (specific weight=18 kN/m3) must a beam of the volume of 0.2 m3 and…

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Q: You perform three replicate tests on typical 6x12” concrete cylinders at 28 days and get the data…

A: given  compression test, peak load values  127260 lbs 129300 lbs 128710 lbs Split tension test, peak…

Q: If we wanted to determine the flexural strength of concrete, what shape should the specimens have?

A: Flexural strength of concrete is very essential for beam structures.  The main purpose of the beam…

Q: Why do we need lean concrete

A: Lean concrete is a mix where the amount of cement is lower than the amount of liquid present in the…

Q: Enumerate the different types of steel used as reinforcement for concrete.

A: “Since you have asked multiple question, we will solve the first question for you. If you want any…

Pricing Concrete Work

The concrete work in a project usually holds a high-end cost in terms of cost and value of the work. It becomes an important step in calculating the cost associated with concrete while preparing the project scale. The cost of making concrete depends on the cost of building materials, mixed materials, labor, and machinery. A concrete contractor builds structures from concrete, usually managing all the steps of the process from assembling ingredients to building a holding structure and preparing the mixture. This person or team oversees the delivery and unloading of goods to ensure that they are done properly. Nowadays, most of the concrete in the United States comes from manufacturers working abroad, usually with branches and plants within the provinces. Contributions can range from pre-mixed concrete to basic ingredients, the consumer company then mixes it. Many American-based concrete companies, however, offer concrete products, such as ballads, bricks, countertop, concrete pipe, and building products, as well as concrete construction and installation materials. This article covers both types of suppliers for this set of building materials.