Use the British method to design a GP concrete mix that is required to have a...
Fantastic news! We've Found the answer you've been seeking!
Question:
Transcribed Image Text:
Use the British method to design a GP concrete mix that is required to have a specified mean strength of 35 MPa at 28 days. The presence of reinforcement requires a slump of 75 mm and a maximum size of aggregate of 10 mm. The aggregates are of normal weight, uncrushed and gradings conform to the appropriate standard with a fineness modulus of 3.0; the specific gravity of combined aggregate (SSD) is 2.65. All tables and figures are the same as the week 2 mix design worksheet. (A) Refer to Table 1, Table 2 and Figure 1 below, and estimate the water/cement ratio (5 marks) and free water content. (2 marks) (B) Refer to Figure 2 and Figure 3 below and calculate the wet density of fully compacted concrete (3 marks), weight of fine and coarse aggregate content (15 marks). Please upload the scanned pdf of your solution. The calculations should be clearly shown and the necessary diagrams should be included. Table 1: Approximate compressive strengths (MPa) of concrete mixes made with a free-water/cement ratio of 0.5 Type of Cem en t Type of coarse aggregate Type GP or Type SR Type HE Compressive strength (MPa) 90 80 70 60 40 30 20 10 0 0.3 Uncrushed Crushed Uncrushed Crushed 3 17 22 24 31 Compressive Strengths (MPa) Age (days) 0.8 7 24 31 N 36 39 28 38 45 47 52 0.4 0.5 0.6 0.7 Free water / cement ratio Figure 1 Relationship between compressive strength and free water/ cement ratio 91 45 54 52 60 Use the British method to design a GP concrete mix that is required to have a specified mean strength of 35 MPa at 28 days. The presence of reinforcement requires a slump of 75 mm and a maximum size of aggregate of 10 mm. The aggregates are of normal weight, uncrushed and gradings conform to the appropriate standard with a fineness modulus of 3.0; the specific gravity of combined aggregate (SSD) is 2.65. All tables and figures are the same as the week 2 mix design worksheet. (A) Refer to Table 1, Table 2 and Figure 1 below, and estimate the water/cement ratio (5 marks) and free water content. (2 marks) (B) Refer to Figure 2 and Figure 3 below and calculate the wet density of fully compacted concrete (3 marks), weight of fine and coarse aggregate content (15 marks). Please upload the scanned pdf of your solution. The calculations should be clearly shown and the necessary diagrams should be included. Table 1: Approximate compressive strengths (MPa) of concrete mixes made with a free-water/cement ratio of 0.5 Type of Cem en t Type of coarse aggregate Type GP or Type SR Type HE Compressive strength (MPa) 90 80 70 60 40 30 20 10 0 0.3 Uncrushed Crushed Uncrushed Crushed 3 17 22 24 31 Compressive Strengths (MPa) Age (days) 0.8 7 24 31 N 36 39 28 38 45 47 52 0.4 0.5 0.6 0.7 Free water / cement ratio Figure 1 Relationship between compressive strength and free water/ cement ratio 91 45 54 52 60
Expert Answer:
Answer rating: 100% (QA)
A Estimating the watercement ratio and free water content From the information provided Specified mean strength 35 MPa at 28 days Slump 75 mm Maximum ... View the full answer
Related Book For
Financial Theory and Corporate Policy
ISBN: 978-0321127211
4th edition
Authors: Thomas E. Copeland, J. Fred Weston, Kuldeep Shastri
Posted Date:
Students also viewed these finance questions
-
The following questions are based on a Human Resources Capability Model developed by the Australian Public Service (APS) for HR managers who work in government agencies. People who work with HR...
-
We have seen that MM1 with taxes and bankruptcy costs is written S + B = S0 + T S P VBC , where S is the levered firm's value of equity, B is the levered firm's value of debt, S0 is the unlevered...
-
Last Sale Net Bid Ask Open Int Puts Last Sale Net bid Ask Vol Open Int 16Aug 155.00(1619H155-E) 6.45 0.75 6.95 7.25 9 16Aug 155.00(1619T155-E) 1.18 (0.75) 1.17 1.25 61 4505 16Aug 166.00(1619H160-E)...
-
What is path dependence? Explain the concept using your own words and provide an example of path dependence (other than what we have already mentioned in class). List the 4 categories of innovation,...
-
The pendulum bobs in the figure are made of soft clay so that they stick together after impact. The mass of bob A is half that of bob B. Bob B is initially at rest. What is the ratio of the kinetic...
-
Janet has three future liabilities, listed in the following table. Today, she has just enough cash to cover the PV of all three future liabilities. Janet is concerned about interest rate risk. A (an)...
-
Presented below are summary financial data from The Boeing Company 2015 annual report. Using the ratio definitions from Exhibit 4.6, calculate the following liquidity and solvency ratios: cash and...
-
Using the trial balance in Figure and adjustment data of Kylers Moving Co., prepare 1. A worksheet for the month of January. 2. An income statement for January, a statement of owners equity for...
-
B2B Company is considering the purchase of equipment that would allow the company to add a new product to its line. The equipment costs $374,400 and has a 6-year life and no salvage value. B2B...
-
Harry Jamison, CPA, is planning to set up a business to prepare tax returns. Harry is the only person in the business, at least for now. Can he delegate any work? Should he? Explain.
-
Benoit Company produces three productsA, B, and C. Data concerning the three products follow (per unit): Selling price Variable expenses: Direct materials Other variable expenses Total variable...
-
Suppose that Disney was experiencing above normal profits. If Disney is a member of a monopolistically competitive industry, what would you predict would happen to the demand curve for Disney movies...
-
Explain what is meant by strategic behavior.
-
Changes in prices and wages are too slow to support the new classical assumption of persistent macroeconomic equilibrium.
-
What is the cost to a firm in an oligopoly that fails to take rivals actions into account?
-
What is meant by the term overfishing? What is the fundamental problem associated with overfishing of the oceans? What might lead to underfishing?
-
Find any stock you want to research. You can find ticker symbol from Google, Yahoo! Finance, MSN money, and so on (i.e. The ticker symbol of Apple Inc. is "AAPL"). - Run the following steps. 1)...
-
What is the order p of a B + -tree? Describe the structure of both internal and leaf nodes of a B + -tree.
-
The First National Rank has been losing money on automobile consumer loans and is considering the implementation of a new loan procedure that requires a credit check on loan applicants. Experience...
-
Empirical evidence indicates the mutual funds that have abnormal returns in a given year are successful in attracting abnormally large numbers of new investors the following year. Is this consistent...
-
Consider the Vasicek model where the current short-term rate is 2%, the long-run mean is 6%, the instantaneous standard deviation is 10%, and the rate of adjustment is 0.4. Derive the interest rates...
-
Champion Company is considering a contract that would require an expansion of its food processing capabilities. The contract covers five years. To provide the required products, Champion would have...
-
Below is a list of aspects of various capital expenditure proposals that the capital budgeting team of Anchor, Inc., has incorporated into its net present value analyses during the past year. Unless...
-
Clancy Company is considering the purchase of equipment for \($100,000\). The equipment will expand the companys production and increase revenue by \($30,000\) per year. Annual cash operating...
Study smarter with the SolutionInn App