You have been introduced to the process of batching and mixing concrete given a mix design....
Fantastic news! We've Found the answer you've been seeking!
Question:
Transcribed Image Text:
You have been introduced to the process of batching and mixing concrete given a mix design. Determine a mix design that meets the following criteria: a. Target strength: 4,000 psi b. Target slump: 2 inches c. Moisture content (FA) = 8 percent d. Absorption content (FA) = 3 percent e. Moisture content (CA) = 3 percent f. Absorption content (CA) = 1 percent g. Fineness modulus of CA = 2.6 h. Dry-rodded unit weight of coarse aggregate: Select a value based on the class data gathered in lab 1 or assume 97 lb/ft i. Specific gravity of cement, fine aggregate and coarse aggregate = 3.15, 2.65, and 2.68 respectively The concrete is to be used for an approach slab in Northern New York which has dimensions of 10 ft wide by 20 ft in length and thickness of 8 inches. Reinforcement is placed with a clear spacing of 8 inches in the longitudinal direction and 12 inches in the transverse. In determining the amount of concrete needed for the slab you may neglect the reinforcing bar and only use the 10ft x 20ft x 0.67ft slab dimensions. You should complete a mix design that includes the batch weights of cement, fine aggregate, coarse aggregate and water. Include the estimated water cement ratio, amount of entrained air and slump in this design. Use the guidelines put forth in Civil Engineering Materials, 2nd Edition by Somayaji on pages 165-175. Make sure you adjust the amount of water batched for the mix to account for the moisture condition of the aggregates. Be sure to cite you work. Reference the tables that you use, citing the source and page number. You will notice that many of the tables make reference to ACI 318 and 211 codes. This is the standard where these tables originate from. You should reference this as well. Label each step of the process as well similar to the text book so it is easier to follow. This assignment can be done in your groups, with one submission needed per group. Make sure that everyone in the group has a good understanding of the process. Do not just let one person do the assignment; everyone should be a part of this as some of this information may appear on an exam. The assignment should be neatly written or typed. Grading: 25% will be based on presentation of the work and 75% on the accuracy. You have been introduced to the process of batching and mixing concrete given a mix design. Determine a mix design that meets the following criteria: a. Target strength: 4,000 psi b. Target slump: 2 inches c. Moisture content (FA) = 8 percent d. Absorption content (FA) = 3 percent e. Moisture content (CA) = 3 percent f. Absorption content (CA) = 1 percent g. Fineness modulus of CA = 2.6 h. Dry-rodded unit weight of coarse aggregate: Select a value based on the class data gathered in lab 1 or assume 97 lb/ft i. Specific gravity of cement, fine aggregate and coarse aggregate = 3.15, 2.65, and 2.68 respectively The concrete is to be used for an approach slab in Northern New York which has dimensions of 10 ft wide by 20 ft in length and thickness of 8 inches. Reinforcement is placed with a clear spacing of 8 inches in the longitudinal direction and 12 inches in the transverse. In determining the amount of concrete needed for the slab you may neglect the reinforcing bar and only use the 10ft x 20ft x 0.67ft slab dimensions. You should complete a mix design that includes the batch weights of cement, fine aggregate, coarse aggregate and water. Include the estimated water cement ratio, amount of entrained air and slump in this design. Use the guidelines put forth in Civil Engineering Materials, 2nd Edition by Somayaji on pages 165-175. Make sure you adjust the amount of water batched for the mix to account for the moisture condition of the aggregates. Be sure to cite you work. Reference the tables that you use, citing the source and page number. You will notice that many of the tables make reference to ACI 318 and 211 codes. This is the standard where these tables originate from. You should reference this as well. Label each step of the process as well similar to the text book so it is easier to follow. This assignment can be done in your groups, with one submission needed per group. Make sure that everyone in the group has a good understanding of the process. Do not just let one person do the assignment; everyone should be a part of this as some of this information may appear on an exam. The assignment should be neatly written or typed. Grading: 25% will be based on presentation of the work and 75% on the accuracy.
Expert Answer:
Related Book For
Posted Date:
Students also viewed these mechanical engineering questions
-
THIRD AVENUE SOFTWARE HEALTH-CARE APP PROJECT This case is new for the ninth edition of Information Technology Project Management . The case provides an opportunity to apply agile and Scrum...
-
Managing Scope Changes Case Study Scope changes on a project can occur regardless of how well the project is planned or executed. Scope changes can be the result of something that was omitted during...
-
A wooden bookshelf has external dimensions as follows :Height = 110cm, Depth = 25cm, Breadth = 85cm (see figure). The thickness of the plank is 5 cm everywhere. The external faces are to be polished...
-
Hardware Corporation issued $75,000 of 6 percent, 10-year, nonconvertible bonds with detachable stock purchase warrants. Each $1,000 bond carried 20 detachable warrants, each of which was for one...
-
The smooth disks D and E have a weight of 200 lb and 100 lb, respectively. If a horizontal force of is applied to the center of disk E, determine the normal reactions at the points of contact with...
-
Estimate the model parameters for the gasoline mileage data using principalcomponent regression. a. How much has the residual sum of squares increased compared to least squares? b. How much shrinkage...
-
Which method for preparing the Operating Activities section of the statement of cash flows, the direct or the indirect method, do you believe provides more information to users of the statement?...
-
Calculating Present Values Imprudential, Inc., has an unfunded pension liability of $645 million that must be paid in 25 years. To assess the value of the firm's stock, financial analysts want to...
-
For each item listed in the table below, input the balance for the date range 10/1/20XX to 12/1/20XX. For the Journal, input the balance for the date range 11/13/20XX to 12/1/20XX. Note: Enter your...
-
John and Jane Doe are married retired taxpayers who care for their three-year-old grandson. The following information was provided to you as documentation necessary to prepare their 2017 tax return....
-
A typical muscle fiber is 2 . 0 2 . 0 cm long and has a cross - section area of 3 . 1 3 . 1 times 1 0^ 9 1 0 9 m . Unknown node type: sup . When the muscle fiber is stimulated, it pulls with a force...
-
An object of mass m = 1 kg hits a horizontal flat surface as shown in the figure. Find the magnitude of the impulse exerted by the ball on the surface. ( cos 3 7 = sin 5 3 = 0 , 8 , cos 5 3 = sin 3 7...
-
A skater with a mass of 8 7 kg has a speed of 1 3 meters per second at the bottom of the half pipe, how high up the side of the pipe will they go , in meters? ( Assume gravity is 5 . 8 meters per...
-
Let's begin by looking at a flow problem in which the diameter of a pipe changes along the flow path. We will need to use both the continuity equation and Bernoulli's equation for this problem. Water...
-
A uniform horizontal lever of length 2.4 m is pivoted at its mid-point. The following forces are acting on the lever: a 6 N upward force (force with upward vertical component) that makes an angle of...
-
Calculate the value of the first derivative of ln(x) at x = 3 with both the forward difference method and the central difference method with h = 0.1. Calculate the error for both as well.
-
Create a data model for one of the processes in the end-of-chapter Exercises for Chapter 4. Explain how you would balance the data model and process model.
-
A three-dimensional cam for generating a function of two variables is shown in Figure DP5.7(a). Both x and y may be controlled using a position control system [31].The control of x may be achieved...
-
A unity feedback system has the loop transfer function (a) Determine the phase margin of the system when K = 0.16. (b) Use the phase margin to estimate £ and predict the overshoot, (c)...
-
The top view of a high-performance jet aircraft is shown in Figure AP7.1(a) [20]. Sketch the root locus and determine the gain K so that the ζ of the complex poles near the jÏ-axis...
-
Imagine that the EU flagship Human Brain Project has succeeded in producing a highperformance computer that can simulate the entire network of 8.61010 neurones and their 1015 connections. (a) Will it...
-
The stakeholder concept has become popular in management theory. The publishers description of the book Stakeholder Theory [146] says: The stakeholder perspective is an alternative way of...
-
Recall the discussion around Fig. 3.2. Though the model was introduced to describe magnetic phase transitions, it has been used much more widely. Applications include, for example, gas theory,...
Study smarter with the SolutionInn App