A. What are the primary and secondary parameters upon which durability of concrete depends on? Discuss in detail one PRIMARY PARAMETER to which concrete is exposed in the image shown: *
Q: Calculate the modulus of elasticity Ec of lightweight concrete that has a unit weight of 110 pcf and…
A: Elasticity is the property of material by which the material regains its original shape when the…
Q: 1. What are the most common applications for structural steel? 2. What is the purpose of reinforcing…
A: Structural steel plate is a flexible construction material that gives manufacturing versatility and…
Q: Please answer the ff. problem 1. What are the typical uses of structural steel? 2. Why is…
A: Brief concept- Structural steel is a special type of steel and it is widely used in construction all…
Q: How does the fineness modulus of aggregate affect the strength of concrete
A: Brief concept introduction- Fineness modulus of aggregate- It represents the average size of the…
Q: Concrete is required for walls of a building that will be Moderately exposed to freezing and…
A: Reference : ACI 318 Mix design concrete All tables are referred from ACI 318. We cannot paste tables…
Q: Discuss the change in volume of concrete at early ages.
A: To discuss: The change in volume of concrete at early ages.
Q: 4. The state of two dimensional stress acting on a concrete lamina consists of a direct tensile…
A: Given data, σx= 6Mpa τxy= 4Mpa Tensile strength of the concrete=?
Q: Q; What are the harmful materials in aggregates? What are their harmful effects? Subject: Concrete…
A: The harmful materials in the aggregates are: Clay, Silt and crushed dust, Organic impurities ,…
Q: Why do we need to find the Specific Gravity and Absorption of Fine Aggregate, Surface Moisture of…
A: Introduction:- Engineers value specific gravity because it assists them in establishing the…
Q: Concrete is required for a column that will be moderately exposed to freezing and thawing. The cross…
A: Target mean strength: It is the design strength determine for the manufacture of reinforced…
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: A. Write a detailed note on stress-strain characteristics of reinforced concrete and steel. B.…
A: A) The tensile strength of concrete as compared to compressive strength is very weak, it can only…
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: What does the Specific Gravity of Fine Aggregate, Absorption of Fine Aggregate, and Surface Moisture…
A: Specific Gravity of Fine aggregate: It is the ratio of the weight of unit volume of Fine aggregate…
Q: 4. The percentage of fine aggregate 5. The percentage of filler material
A: 4. Fine aggregate range lies from 4.75mm to 0.075mm. Hence from the table: % Fine aggregate = 65-3 =…
Q: The relation between strength and maturity for a concrete is known to be as follows: in SI units: f…
A: Given: The concrete is cured at 30oC. The time period is 7 days. The strength is 30 MPa. The time…
Q: Concrete is required for walls of a building that will be Severe Exposed to freezing and thawing.…
A: Reference : ACI 311 Mix design All tables are referred from ACI 311 Mix design. Table : Relationship…
Q: Explain the importance of aggregates in concrete construction
A: Concrete is formed by adding water to the mixture of cement, fine aggregates and coarse aggregates.…
Q: Why is gypsum important in the performance of concrete? What is the importance of gypsum in…
A:
Q: Will the immersion of the aggregates in water saturated its voids? Explain briefly
A: When the aggregate is immersed in the water, a film is formed around each particle exerting a force…
Q: what conclusion we can make regarding the strength of the concrete.
A: in this question conclusion is being asked regarding strength of concrete
Q: Briefly discuss each properties of concrete. a. Compressive strength b. Flexural strength c. Tensile…
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Q: Concrete is required for a column that will be Severe exposed to freezing and thawing. The cross…
A:
Q: A concrete is composed of a mixture 286 lbm of cement (SG = 3.11), 520 kgm gravel (SG 2.71), 260 kgm…
A:
Q: The modulus of elasticity of M25 concrete as per the formula in IS 456 : 2000 is:
A: The given data is: Grade of concrete, fck=25
Q: 2. A standard brick ( dimensions 200mm x 100mm x 65mm) is compressed lengthwise by a force Pas…
A: The given values: ,Dimension=200mm×100mm×65mm ultimate shear stress at an inclination=8M Pa and 45∘…
Q: Literature review of workability of concrete
A: The workability of concrete is the property of concrete which determines the amount of useful…
Q: Consider the following statements: Pozzolana used as an admixture in concrete has the following…
A: Finely grounded siliceous material is called pozzolana . It does not have itself cementitious…
Q: What is meant by the modular ratio and Poisson’s ratio? Give approximate values for concrete
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Q: Discussion on the experience of fineness of cement in civil engineering with the solution
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Q: List the types of aggregate used in concrete and their desirable characteristics.
A: Solution; There are types of aggregate used in concrete and their desirable characteristics are:…
Q: basic introduction about concrete materials
A: Introduction- The Concrete is a combination materials made up of coarse and fine aggregates linked…
Q: Compute for the corrected amount of water needed in the concrete mix if the mass of fine and coarse…
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Q: Concrete is required for a column that will be Severe exposed to freezing and thawing. The cross…
A: Reference : ACI 318 Mix design All tables are referred from ACI 318. We are not allowed to paste…
Q: Q1: Define the following terms. Also explain how they effect the engneering properties of steel,…
A: As per Bartleby guidelines one need to answer only first 3 subparts of question
Q: 2. A standard brick ( dimensions 200mm x 100mm x 65mm) is compressed lengthwise by a force Pas…
A: given data,dimension=200mm×100mm×65mmultimate shear stress at an inclination=8MPa and 45∘ultimate…
Q: Why we need to know the Properties of Fine Aggregate and how it is important for concrete
A:
Q: Design a concrete mix for the following performances and ingredients: • Compressive strength at 28…
A: Given data,Compressive strength at 28 days = 32 MPa Slump =80 mm Maximum size of aggregate = 20mm…
Q: Q: Describe the effects of C3S on the properties of concrete. Subject; Concrete Technology…
A: During hydration process there are several compounds formed in cement. TriCalcium Silicate-C3S…
Q: Concrete is required for a column that will be moderately exposed to freezing and thawing. The cross…
A:
Q: What is the purpose of concrete cube test
A: Concrete cube test. The test involves the cube specimen of concrete which are required to find…
Q: Write the parameters that affect the compressive strength of concrete.
A: Parameters Affecting Compressive Strength of Concrete : There are many parameters that affect the…
Q: Explain the properties of fresh and hardened concrete? Explain in details about the determination of…
A: Property of Fresh concrete is workability, which is the ease with which concrete can be mixed,…
Q: British methods, design a concrete mix to bear an average compressive strength of 35 MPa at 28 days,…
A: Given:- Average compressive strength =35MPa 28 days dimensions-5width x 4 length x 0.2 m depth space…
Q: Discuss and conclude Surface Hardness Test On Concrete
A: Rebound Hammer Test:It is a surface hardness tester for which an empirical correlation has been…
Q: Given the image below. What is the maximum diameter of aggregate considering the narrowest dimension…
A: e = 69cm= 690mm Dia of main bar = 25mm Dia of stirrups = 10mm Assume clear cover = 40mm Clear width=…
Q: Absorption and porosity of aggregate will affect the w/c ratio and workability of concrete. Justi
A: CONCRETE TECHNOLOGY:
Q: Which one of the following sentences is not correct? a. For many years, tensile strength has been…
A:
Step by step
Solved in 3 steps
- Correctly define which of the stress versus strain graphs represent the comparison of 8 ksi and 4 ksi concrete for the chart below (say left or right). Qualitatively compare the w/c ratio, elastic modulus, and brittleness. 0.000 0.003 0.000 0.003 Sean, e Sane Feure 2 Strss vesus Srain curves Feure 2. Stress vasus rain curveWhich one of the following sentences is not correct? a.For many years, tensile strength has been measured in terms of the compressive strength. b.The modulus of rupture where the normal-weight concrete has an fc of 4000 psi is 474 psi. c.For lightweight concretes tensile strength depends largely on the porous aggregate. d.For normal weight concrete, the tensile strength depends primarily on the strength of bond between hardened cement paste and aggregate.o Why the, tensile strengths of concrete are of the order of 10 and 15%of the compressive' strength.
- Compute the Fineness Modulus for fine aggregate.Concrete is strongest when subjected to: O A) Tension O B) Bending O9 Torsion O D) Compression If a peak load of 250 kN was exerted on a 100 mm x 200 mm test cylinder, the compressive strength of the concrete is: OA) 28.6 MPa O B) 35.2 MPa O9 31.8 MPa O D) 32.4 MPa The approximate volume percentages of the principal components of a concrete mixture are: 6%, 11%, 41%, 26%, 16%. Which of the following lists matches the correct order of these main components? Start with the one at 6% and end with the one at 16%. O Air, Water, Coarse Aggregate, Fine Aggregate, Cement O Water, Coarse Aggregate, Fine Aggregate, Cement, Air O Air, Coarse Aggregate, Fine Aggregate, Water, Cement O Air, Cement, Coarse Aggregate, Fine Aggregate, Water Under ideal conditions, concrete should be batched and placed within after mixing, when retarding admixtures are not used. OA 90 minutes O B) 1/2 hour OC 4 hours O D) 120 minutes6. Discuss the different types of volume change in concrete at early and long-term ages.