Question 5 v Saved What is the minimum acceptable compressive strength o GDOT class "AA" concrete? 3000 psi 3500 psi 4000 psi 4500 psi
Q: How does curing over time affect the splitting tensile strength of concrete?
A: Right after the water is added to the mix, Hydration starts taking place and it requires much…
Q: Define about the problems related to the use concrete of very high strength exceeding 60MPa?
A: Solution: If we have to increase the strength of concrete just from 40 Mpa to 80 MPa, it will…
Q: Is it possible to mix concrete using fine aggregates?
A: The given Question is, whether it is possible to mix the concrete using fine aggregates.... Well,…
Q: A concrete masonry unit has actual gross dimensions of 190 mm * 190 mm *190 mm. The unit is tested…
A: Given: The gross dimension of masonry unit is 190 mm x 190 mm x 190 mm. The failure load is 436 kN.…
Q: 3. A concrete mix includes the following ingredients per cubic foot: (14 pts.) Cement 25 Ibs. Water…
A: Given data - Cement -25 lbs Water - 11 lbs
Q: normal-weight concrete has an average compressive strength of 4500 psi. What is the estimated…
A: Given-Normal weight concrete having compressive strength of 4500 psi. Required-To estimate the…
Q: A concrete masonry unit is tested for compressive strength and produces the following results:…
A: It is given that :
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 are the results of this performing the flexure test on concrete related to the compressive…
A: The flexural strength of concrete is calculated by One point loading method Two-point loading…
Q: Can a natural fiber become an additive in concrete to improve its performance?
A: Brief concept introduction- Natural Fiber- Natural fibers are derived from natural sources such as…
Q: What aggregates should be avoided when making concrete?
A: Aggregates: Aggregate is a term for any granular material which includes gravel, crushed stone,…
Q: A concrete masonry unit has actual gross dimensions of 190 mm X 190 mm X190 mm. The unit is tested…
A: Given:- Gross dimensions of concrete masonry unit = 190 mm X 190 mm X 190 mm Failure load = 436 kN…
Q: A normal-weight concrete has an average compressive strength of 31 MPa. What is the estimated…
A: Average compressive strength of concrete =31 MPa
Q: Q3: B: Design the concrete mix according to the following conditions: Design Environment Building…
A:
Q: The factors which affect the compressive strength of extracted concrete cores ?
A: Concrete cores are used for testing of actual properties of concrete in existing structure such as…
Q: 6) What are the three methods for measurement of tensile strength of concrete? Indicate which…
A: Since, the question to be solved is not specified, the solution for question 6 is as follows: The…
Q: The design engineer specifies a concrete strength of 5500 psi. Determine the required average…
A: Given: Strength of concrete = 5500 psi The solution of first three parts are given as: The average…
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: A normal-weight concrete has an average compressive strength of 20 MPa. What is the estimated…
A: Flexural strength of concrete is between 10-20% of compressive strength ie 2-4 N/mm2 or MPa
Q: A normal-weight concrete has an average compressive strength of 4500 psi. What is the estimated…
A: It is required to determine the estimated modulus of elasticity of the concrete. Here, fc’ is the…
Q: What is the permissible tensile strength of concrete , M150 ?
A: Given data: Grade of concrete = M150 To find- The permissible tensile strength of concrete.
Q: Why is extra water harmful to fresh concrete, but good for concrete after itreaches its final set?
A: Answer Introduction In the mixing of the concrete, water is the important and most useful…
Q: What happens if any concrete cube fails in 28 days compressive strength test?
A: concrete compressive strength is the material ability to sustain load without showing deflection and…
Q: A normal-weight concrete has an average compressive strength of 30 MPa. What is the estimated…
A: The expression for modulus of elasticity is given by, Here, f’c is the average compressive strength…
Q: Define the importance of Selecting an appropriate value for the compressive strength, f'c , of…
A: Compressive strength is main factor influencing stress strain behavior of concrete and hence should…
Q: n the 28th day after concrete was mixed, a 6.00-in-diame a compressive testing at a load of 145 000…
A:
Q: The concrete grade can be written as C X/Y (e.g C25/30). The parameters X, and Y correspond to which…
A: Elaborating terms in nomination of concrete
Q: Using the ACI code equation, estimate what would be the modulus of elasticity of this concrete at…
A: Modulus of elasticity of concrete= 4700f'c= 4700*4.909=23073.123 MPa As per ACI Code
Q: Is it suitable to use the partial replacement of cement with Calcium bentonite in concrete to…
A: Bentonite is a clay mineral, it is a kind of natural pozzolanic material that improves the…
Q: How limestone or calcite affects the perfomance of concrete?
A: The use of limestone in the construction industry has been increasing due to various benefits as…
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: A concrete mix includes the following ingredients per cubic meter: Cement%3D400 kg Water=184 kg No…
A:
Q: A normal-weight concrete has an average compressive strength of 4500 psi. What is the estimated…
A: compressive strength of concrete = 4500psi (1)Modulus of elasticity of concrete:-
Q: What are the properties of Self-Consolidating Concrete?
A: Solution: Self compacting concrete is that concrete that flows under its own weight that do not…
Q: A concrete masonry unit has actual gross dimensions of 7@5/8′′ * 7@5/8′′ *7@5/8′′. The unit is…
A: (a) It is required to determine whether the unit is solid or hollow. Given the net volume = 312.7…
Q: A normal-weight concrete has an average compressive strength of 20 MPa.What is the estimated flexure…
A: Given:- average compressive strength =20MPa To find:- estimated flexure strength
Q: 1. What are the main reasons of concrete segregation? 2. What are the main causes of plastic…
A: Answer NOTE- According to Bartleby guidelines only give the answer of the first question. If you…
Q: What is pozzolanic material; what benefits can be achieved by using Pozzolana with cement in…
A: Pozzolanic material - Pozzolanic materials are a broad class of…
Q: A concrete masonry unit has actual gross dimensions of 7-5/8 inch.*7-5/8 inch.*7-5/8 inch. The unit…
A: Given: Gross dimensions = 7-5/8” x 7-5/8” x 7-5/8” Failure load = 110 kips Net volume = 366.2 in3
Q: The target mean strength of the M20 grade concrete is 27 N/mm?. What is the value of standard…
A: To Determine Value of Standard deviation, σ
Q: Subject concrete technology Q: a)What particular precautions would you take when concreting (i) In…
A: Thank you for the question . As per honour code we are allowed to answer the first question since…
Q: Q.2 If the (010×10) cylinder compressive strength of O.P.C. concrete at 10-day is (14 MPa).…
A: Given data- Compressive strength of the cylinder @ 10 days=14 MPaTo Find-The compressive strength of…
Q: According to ASTM C33 Standard Specification for concrete Aggregates, what is the nominal maximum…
A: Nominal maximum size: The minimum size through which the entire aggregate passes
Q: A. Differentiate between plain and reinforced concrete; why concrete is reinforced? B. What is the…
A: Question is based on concrete technology . In the question we have to differentiate between…
Q: Consider the following data for concrete with mild exposure Water-cement ratio = 0.50 Water = 191.6…
A:
Q: Four standard concrete cylinders of 6-inch diameter cross section were tested under uniformly…
A:
Q: what is the value of gel porosity in concrete ?
A: Brief Concept Introduction: Concrete: It is the mixture of cement (binding material), aggregates,…
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- DESIGN OF A RIGID PAVEMENT Give a summary of rigid pavement design procedure by AASHTO method (1993), and describe the variables used in the method. Explain the CBR test; how to conduct the test and its purposes. Where are the usages of test results in practical applications? Explain its advantages and disadvantages. Determine the thickness of a rigid pavement (thickness of concrete slab) by using the data provided below: DATA PROVIDED: Cumulative 18kips ESAL = 5.000.000 Overall standard deviation = 0.3 Reliability = 95% Design serviceability loose =1.7 Drainage coefficient = 1 Load transfer coefficient = 3.2 Mean concrete modulus of rupture = 650 psi Elastic modulus of the concrete to be used = 5.000.000psi Results of CBR test on subgrade material in the laboratory (Table 1): 10. Standard force-penetration data.2. Estimate the equivalent 18-kip single-axle load applications (ESAL) for a four-lane pavement (two lanes in each direction) of a rural interstate highway with a truck count of 1,200 per day (including 2-axle, 4-tire panel, and pickup trucks), an annual growth rate of 4%, and a design life of 20 years.If the unit weight in the SSD condition is needed, what test should be used and how is YSSD calculated?
- Q=Discuss various tests used for the quality of aggregate used in flexible pavements. Answer in word formatQ=What is the primary function of the pavement structure? Why do we use high quality materials as we go from bottom to top of the pavement structure? Answer in word formatConstruction management Determine the absolute volume of gravel in a 1:2.5:5 concrete mix given that its density is 1528 kg/m3 and specific gravity of 2.6. Round off your answer to 4 decimal places.
- The pavement bottom layer for modern roads construction, was developed by Indian The Chinese Telford John MacAdam choise correctPlz, solve this proboem. Transportation Engineering-2 Estimate what standard PG asphalt binder grade should be selected if the seven-day maximum pavement temperature has a mean of 680 C and a standard deviation of 2.50 C. The minimum pavement temperature has a mean of -220 C and a standard deviation of 30 C. Use a Reliability level of 99 %. Note: seven-day maximum and minimum pavement temperatures are normally distributed (use cumulative standard normal distribution tables)The average compressive strength of concrete paving blocks produced at ABC Company is measured by testing three blocks from each batch of production. The test results for 15 consecutive samples are given below. a) Develop ‘mean’ and ‘range’ charts for three-sigma quality control. b) Comment about the status of the process.
- a) Draw a Schematic diagram of the road cross section showing various structural elements/layers. Discuss each layer of materials in terms of compaction requirement. Why do we use high quality materials at the top but the quality decline as we go down in pavement layers? Explain?b) Differentiate between the following terms?I. Emulsion and Cutback,II. Tack Coat and Prime coat,III. Flexible and Rigid Pavements,IV. Slippage failure, Rutting.Calculate for the liquid pressure experienced using the equation: P=pgh solve in GRESAJ format height = 7.10 feet Flood density is generally assumed to be 62.4 g/mL regardless of the amount of debris. Cement can withstand a pressure of ≈ 28728.2 Pa.After two years of traffic, cores were recovered from the roadway which has severe rutting and bleeding. The bulk specific gravity and the maximum theoretical specific gravity were measured on these cores and are as follows: Bulk specific gravity = 2.561 Maximum theoretical specific gravity = 2.487 a. Calculate the air voids b. If the design air void content was 4%, explain what effect the calculated air voids had on the rutting and bleeding noted.