Explain the process of 'cracking' and discuss why it is done.

Q: What do you mean by concrete's workability, why do we need it, and how do different aggregate…

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Q: Explain the type and percentage of deleterious minerals whose presence in concrete is harmful in…

A: Deleterious materials in the aggregate are substances that have an adverse influence on the…

Q: Why is it necessary to limit the widths of cracks?

A: Cracks are of concern for three main reasons: Appearance Leakage of air or fluids through the…

Q: What is the difference between conducting laboratory tests on the specific gravity and absorption of…

A: Step: 1 Aggregate materials: - It is defined as mixture of coarse and fine particles like concrete,…

Q: What is cold bending of steel rebars?

A: This question is related to the Design concrete structure from civil engineering.

Q: Why some types of aggregate are susceptible to damage from repeated freezing and thawing? Explain.

A: effect of freeze and thaw on aggregates:

Q: Is the inspector reponsible to reject the faulty materials?

A: An inspector presents complete on-site observations to the engineer to control the materials,…

Q: Compare between sand casting and permanent casting ?

A: Sand casting In sand casting, the formed mold by sand can be used…

Q: Why is gypsum important in the performance of concrete? What is the importance of gypsum in…

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Q: Define about the term effective stress?

A: The term effective stress is defined as the stress that holds particles together.

Q: The most common method of controlling cracking in concrete slabs on grade is to introduce an…

A: Probably the single most common reason for early cracks in concrete is plastic  shrinkage. When the…

Q: State AT LEAST TWO (2) corrosion prevention methods applicable to the steel tank. Examine the…

A: Storage Tanks There are two types of steel used to make storage tanks: carbon steel and stainless…

Q: 35. Which of the below is not a property of ferro cement?

A: Introduction- Ferrocement, also known as ferro-cement, is a building method that employs reinforced…

Q: CRACK AND UNCRACKED STAGE OF CONCRETE 1. What is noncracked, linear stage? 2. What is cracked,…

A: Consider the simple supported beam depicted below, which is relatively lengthy. Assume that the load…

Q: What is self-consolidating concrete? How are its properties achieved? Howare these properties…

A: Self-consolidating concrete or self-compacting concrete (SCC) is a concrete mix which has a low…

Q: Explain the significance of quality of bentonite slurry in the construction ofdiaphragm walls?

A: Bentonite slurry is one of the most common excavation fluid used in constructing diaphragm wall.…

Q: What is the role of gypsum in the production of portland cement?

A: Portland cement is a type of hydraulic cement, which hardens and sets faster due to chemical…

Q: In the context of concrete structures, what is shrinkage? How does it occur? Discuss the factors…

A: Shrinkage:-  The decrease in either length or volume of material results from changes in moisture…

Q: Discuss the following terms briefly: Emulsion breaking and Cutback curing,

A: A) Emulsion breaking and cutback curing 1) During the material production process of emulsion…

Q: Bond identical metal samples with various types of adhesives. After the recommended curing time,…

A: Introduction : The single lap shear test is commonly used to determine adhesive bond strength. The…

Q: Explain how the superplasticizers affect the workability and strength of concrete.

A: Superplasticizers are potent water reducers that raise the ultimate stress of concrete by lowering…

Q: Mineral processing is a compromise between grade and recovery why?

A: Mineral processing reduces smelter's energy cost. It also reduces the smelter metal loss due to less…

Q: When is the Concrete susceptible to cracking?

A: Concept: Complete/incomplete separation of concrete into two or more parts as a result of fracturing…

Q: Discuss what are important tests necessary to investigate the properties of road materials on-site…

A: Brief Concept Introduction: Road materials should have certain desirable properties so that they can…

Q: Calculate the strength reduction factor

A:

Q: Define thhe below problem ? ASTM C496-96 Standard Test Method for Splitting Tensile Strength of…

A: The splitting tensile strength test is used to determine the tensile strength of the concrete…

Q: types of steel failures

A: Tension failure occurs in phases in steel structural components. The process begins with the…

Q: What types of tests are performed for the quality assurance of the materials?

A: Quality assurance is defined as the process in which the team of quality management focuses on…

Q: How does gypsum affects the performance of concrete?

A: Context: Gypsum in concrete

Q: How do all stabilizing techniques increase the strength of aggregate??

A: Given: Aggregates…

Q: What do we mean by curing concrete? What will happen if concrete is not cured?

A: Curing :               Curing is the gradual process of application of moisture content or water to…

Q: INSTRUCTION: Solve the given problems completely and write the correct units for every quantity.…

A: The given data is: Es=2*105 MPa Ec=47000fc=4700025=23500 MPa Converting the steel into equivalent…

Q: what is the equation for finding toughness

A: Given data in question  Toughness To be discussed  Equation of finding toughness.   Toughness is the…

Q: Grade 50 rebar is equivalent to? 280 Mpa 420 Mpa 690 Mpa 350 Mpa

A: Given  Grade-50 rebar

Q: A large crack was observed in a steel beam on a bridge. The bridge maintenance engineers drilled a 2…

A: Drilling : Drilling could be a saw during which a bit is employed to chop a spherical cross-section…

Q: How capillary pores are created in the concrete structure? Concrete technology

A: Capillary pores are the minute channels inside the hydrated paste that will draw liquid water due to…

Q: What are the results in fracture on the earth surface?

A: Fracture in geologic terms refers to broken surface or part of the Earth’s crust which is caused…

Q: Is it possible to perform the wear test on aggregate s larger than 3/4? And what is the ASTM…

A: Aggregate Wear testing: The resistance of aggregates against wearing and tearing is determined with…

Q: How different is crushing from grinding?

A: The difference between crushing and grinding

Q: Determine the cracking moment of a rectangular concrete beam that is 18-inches tall and 6-inches…

A: Given; b=6 d=18 fck=5000 psi

Q: b. Why some types of aggregate are susceptible to damage from repeated freezing and thawing?…

A: Repeated freezing and thawing  Freeze-thaw melting is a degradation mechanism that occurs in cold…

Q: what is the value of gel porosity in concrete ?

A: Brief Concept Introduction: Concrete: It is the mixture of cement (binding material), aggregates,…

Crack Detection

Concrete materials are meant for supporting structures, building foundations and they act as several load-bearing structures. Over time, due to environmental conditions, and based on the constituent materials used, concrete materials are subjected to a great degree of distress. Corrosion of the reinforcement bars due to chemical influences, uneven base, earthquake, drying shrinkages, and alkali-aggregate reactions are some of the reasons for concrete distress.