TABLE P6.35 Cylinder no. Water submergence (days) Compressive strength of plain concrete (MPa) Compressive strength of concrete with accelerator (MPa) 2 3 4 3 14 21 28 7.8 15.8 21.1 24.5 26.8 14.8 20.1 24.0 25.9 26.8 0.8 6.2 3. 2.

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: Given the following tabulated data representing a sample from a concrete mix used in a project. The…

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

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Q: Design the concrete mix according to the following conditions: Design Environment • Concrete slab o…

A: 1) Concrete slab : Subjected to freeze and thaw, Required design strength (fs') = 21 MPa ,Slab…

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

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Q: Compute the compressive strength, in psi, for each size of aggregate on each no. of days of curing.…

A: Given Data: The recorded maximum loads are given when the specimen breaks.   To Determine: The…

Q: List the steps involved in proportioning of concrete (i.e. mix design) if the required concrete…

A: Moisture content MC : The aggregates contain some amount of water already. Such water is called as…

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

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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: The following table represents a concrete mixture that has not been completely proportioned. The…

A: Question is based on the concrete mixture (oven dry basis) . Proportion of water, Air, coarse…

Q: The water-cement ratio (in percent, round off to the lower integer) to be used in the mix

A: Given data, Characteristic Compressive strength C=25 MPaObserved compressive strength,σ=4 MPaRatio…

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

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

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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: 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: Three 6 in. * 12 in. concrete cylinders with randomly oriented steel fiber contents of 0, 2, and 3%…

A: (a) The expression for stress is given by, Here, B is the width of the specimen and D is the height…

Q: 50 Non-air entrained concrete Specimens: 150x300 mm cylinders Cement: Type I or Normal 40 28 days 30…

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Q: Students in the materials lab mixed concrete with the following ingredients: 32.1 lb of cement, 51.6…

A: Solution: Given: Cement = 32.1 lb  = 14.6 kg Sand = 51.6 lb      = 23.4 kg Gravel = 67.5 lb    =…

Q: Two groups of concrete produced with exactly the same mixing properties are given in the Table…

A: Compressive strength of concrete-                    Usually, the compressive strength of concrete…

Q: Three standard mortar cubes were made using nonpotable water available at the job site, and three…

A: ASTM standards : - Average Compressive strength of Non - potable water should be greater than 90 %…

Q: The following table represents a concrete mixture that has not been completely proportioned. The…

A: The water to cement ratio compares how much water versus cement is used in a concrete mix. A low…

Q: Determine the water cement ratio ?

A: Given data,  Compressive strength of concrete required in a project, σcs=25 MPaObserved compressive…

Q: If the target slump of concrete is 30 mm, the maximum nominal size of the coarse aggregate is 25 mm,…

A: Case-1:Target slump of concrete is 30 mm,Maximum nominal size of the coarse aggregate is 25…

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: A materials engineer is working in a research project to evaluate the effect of one type of…

A: The concrete design needs to be like individual codes defining the terms of a complete building…

Q: In order to evaluate the sustainability of non-potable water available in the job site for mixing…

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Q: The methods of placing fresh concrete * include • pumps • None of the above small railcars O •…

A: The fresh concrete is transported & placed in the formwork by various methods such as pumping,…

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

A: Given data- Characteristic compressive strength of concrete = 25 MPa, Standard deviation = 4 MPa,…

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

A: a) The formula of modulus of rupture of the beam is given by,

Q: Compressive Strength is conducted for each aggregate with 3 specimens for each no. of days of…

A: Compressive Strength: The ability or capacity of a material to withstand the external load acting on…

Q: Three standard mortar cubes were made using nonpotable water available at the job site, and three…

A: Standard Requirements of ASTM for adding water in concrete are as follow ; - Average compressive…

Q: In order to evaluate the suitability of nonpotable water available at the job site for mixing…

A: Given values: Compressive strength of mortar cubes after 7 days of curing tested and failure loads…

Q: Give any two examples of samples of different types of aggregates and note the different shapes,…

A: This question is related to the Construction Materials from Civil Engineering.Find out - Any two…

Q: 6.32 The results of an experiment to evaluate the effects of a water reducer are shown in Table…

A: We are authorized to answer three subparts at a time, since you have not mentioned which part you…

Q: Assume that you are going to make a three cubic yard (3yd³) of concrete. Create your own mix design…

A: The design strength = 3.8 ksiThe slump should = 3 to 4 in.The maximum size of aggregate = 2 inUnit…

Q: (b). Calculate the amount of cement, water, fine aggregate, and coarse aggregate per trial mix of…

A: A concrete mix implies a mix of five most significant parts in various proportions of concrete,…

Q: A sieve analysis test was performed on a sample of coarse aggregate and produced the following…

A: Sieve analysis test was performed on a sample of coarse aggregate. We need to determine the closest…

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.