A project specifies a concrete strength of 24.1 MPa. Materials engineers will design the mix for a strength higher than that to account for variables.a. Calculate the required average compressive strength of the mix design if the mixing plant has a standard deviation of s = 3.8 MPa.b. Using the ACI code equation, estimate what would be the modulus of elasticity of this concrete at the required compressive strength.

Q: Q°: for a specific concrete mix, the average compressive strength (CS) (28.2 MPa) and standard…

A:

Q: If the required slump is 75 mm and the maximum aggregate size is 22.5 mm, what is the quantity of…

A: Given Data: Slump size = 75mm Aggregate Size = 22.5mm

Q: A center point loading is used to test concrete for flexure. The sample is 150mm x 150mm and has a…

A: To find flexure stress at failure

Q: adhesion between cement and aggregate paste more important in highly resistant concrete 5- Why is it…

A: 1.) Temperature changes could cause cracks or sapling, distress, and aggregate expansion which leads…

Q: Create a design mix using the ACI DESIGN MIX PROCEDURE with the following parameters: Air Entrained…

A:

Q: Example 6: Design a concrete mix for slab with dimension of (5x5x2.5) according to ACI by Volumatic…

A: Given data: 1- characteristic compressive strength at 28  days fmin = 30 MPa 2- Nominal maximum size…

Q: With explanation please Magnitude of shrinkage strains depends upon the composition of the concrete.…

A: Magnitude of shrinkage strains depends upon the composition of the concrete. The above statement is…

Q: Three 100*200 mm cylindrical concrete specimens were tested for 28 days compressive strength and…

A: Solution: Given: Three Compress strengths of same concrete sample: C1=25.5MPa C2=28.6Mpa C3=24.8MPa…

Q: Q3. Three concrete mixes with the same ingredients, except the amount of mixing water, and their…

A:

Q: The specified 28-day compressive strength of concrete for a project is fc’ = 36MPa. This statistical…

A:

Q: The characteristic compressive strength of concrete required in a project is 25 MPa and the standard…

A: Given- fck=25 MPa,standard deviation σ=4 MPa, It is needed to find the water cement ratio.

Q: A batch of concrete is composed of 200 lbm fine aggregate, 350 lbm coarse aggregate, 94 lbm cement,…

A:

Q: Use the American method to design a concrete mix which is required to have a specified mean strength…

A: A specified mean strength=30 Mpa(4400 psi), Slump=75 mm(3 inches), Maximum size of aggregate=10 mm,…

Q: 10 %) of concrete samples have compressive strength less than (30 mn/m2) and (20%) have strength…

A: Given:- 10 % concrete samples compressive strength<30 MN/m2 20 % concrete samples compressive…

Q: Create a design mix using the ACI DESIGN MIX PROCEDURE with the following parameters: Air Entrained…

A: Given

Q: What is the amount of cement in kilograms needed for the design mix? (use two decimal places, no…

A: Answer  To calculate the amount of cement in kilogram needed for the design mix we need to obtain…

Q: wwww wg the cement properties. Water amount, C35: 40%, C25: 30%, aggregate, admixtures, labour and…

A: The compressive strength of concrete is depends on parameter of cement and its content used, quality…

Q: Three 150 mm * 300 mm concrete cylinders with water to cement ratios of 0.4, 0.6, and 0.8,…

A:

Q: To evaluate the effect of a certain admixture on the flexure strength of concrete, two mixes were…

A: Solution Given data cross section= 0.15m *0.15m Span= 0.45 m

Q: . Determine the compressive strength of each cylinder after 7 days. b. Determine the average…

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Q: In a ready-mix plant, cylindrical samples are prepared and tested periodically to detect any mix…

A:

Q: 2- The slump test is used for measurement the... a- compressive strength 3- Compressive strength…

A: 2. The slump test is used for the measurement of workability. Answer:- d Explaination:- The concrete…

Q: On the 28th day after concrete was mixed, a 6.00-in-diameter concrete cylinder failed in a…

A: Given data, Diameter of cylinder d = 6 in Compressive load P = 145000 lb Factor of safety γ0 = 5

Q: Pick the correct statement from the following Select one: O A. Angular and rough aggregates can…

A:

Q: Design the concrete mix according to the following conditions: het Design Environment Pavement slab,…

A: Given, Design strength (f'c) = 5000 psi  Admixture dose = 0.15 fl oz/1% air/100 lb

Q: 2. Design a non-air-entrained concrete mix using, ACI Method for a reinforced Concrete Work for the…

A: req char. comp. strenght f'c = 22 MPaSlump = 50 mmFM = 2.8Max Aggregate size = 70 mm

Q: Magnitude of shrinkage strains depends upon the composition of the concrete.

A: 1. True Magnitude of shrinkage strains depends upon the: composition of the concrete size of…

Q: 5. Design the concrete mix according to the following conditions: Design Environment Building frame…

A: Concrete mix design includes a course of readiness wherein a blend of fixings makes the necessary…

Q: Three concrete cylinders are cast in the field and cured on site. After 3 days they are brought and…

A: Given, Failure load for sample 1 = 212000 N  Failure load for sample 2 = 225000 N

Q: The compressive strengths of a concrete sample at dry air-dry and water saturated conditions are…

A: The ratio of compressive strength of fully saturated concrete to dry concrete is called softening…

Q: Question-6 b The gel-space ratio of a concrete sample is given as 0.6. What is the theoretical…

A: Given data- Gel-space ratio X=0.6, To Find- The theoretical strength of the sample.

Q: Design a concrete mix for the following conditions and constraints using the Absolute Volume Method.…

A: Following is required answer : NOTE : Due to guidelines, first 3 parts are necessary to answer.

Q: Create a design mix using the ACI DESIGN MIX PROCEDURE with the following parameters: Non-air…

A: Answer  Based on the given data we can use below table from ACI 211.1 to obtain the amount of…

Q: Discuss the following properties of ordinary Portland cement and give their specification: a)…

A:

Q: A) as follows 1- The reason for the decrease in concrete resistance when the temperature rises? 2-…

A: As per our guidelines we are supposed to answer first question in case of multiple questions and…

Types of Concrete

Concrete is the fundamental material used in civil engineering such as building materials for building structures. Concrete is an aggregate mixture of cement, sand, and fine and coarse rock pieces. The cement acts as a binding material that holds the compositions together, sets, and hardens with time. Apart from cement, there are other different types of binding materials used, such as lime concrete, bitumen, asphalt, and so on.