6.31 The results of a laboratory experiment to evaluate the effects of a plasticizerare shown below.a. Calculate the water/cement in each of the three cases.b. Using water reducer, how can we increase the compressive strength of con-crete without changing workability? Refer to the appropriate case in the table.244Chapter 6 Portland Cement, Mixing Water, and AdmixturesWith Water ReducerWithout WaterReducerCase 1Case 2Case 3Cement Content, kg/m850850850765Water Content, kg/mSlump, mmCompressive Strength, MPa46546537041950100505037.838.04637.9c. Using water reducer, how can we improve workability without channgingthe compressive strength? Refer to the appropriate case in the table.d. Using water reducer, how can we reduce cost without changing workabilityor strength? (Assume that the cost of the small amount of water reduceradded is less than the cost of cement.) Refer to the appropriate case in thetable.Summarize all possible effects of water reducers on concrete.

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6.31 The results of a laboratory experiment to evaluate the effects of a plasticizer are shown below. a. Calculate the water/cement in each of the three cases. b. Using water reducer, how can we increase the compressive strength of con- crete without changing workability? Refer to the appropriate case in the table. 244 Chapter 6 Portland Cement, Mixing Water, and Admixtures With Water Reducer Without Water Reducer Case 1 Case 2 Case 3 Cement Content, kg/m Water Content, kg/m 850 850 850 765 465 465 370 419 50 50 Slump, mm Compressive Strength, MPa 50 100 37.8 38.0 46 37.9 c. Using water reducer, how can we improve workability without channging the compressive strength? Refer to the appropriate case in the table. d. Using water reducer, how can we reduce cost without changing workability or strength? (Assume that the cost of the small amount of water reducer added is less than the cost of cement.) Refer to the appropriate case in the table. Summarize all possible effects of water reducers on concrete.

6.31 The results of a laboratory experiment to evaluate the effects of a plasticizer are shown below. a. Calculate the water/cement in each of the three cases. b. Using water reducer, how can we increase the compressive strength of con- crete without changing workability? Refer to the appropriate case in the table. 244 Chapter 6 Portland Cement, Mixing Water, and Admixtures With Water Reducer Without Water Reducer Case 1 Case 2 Case 3 Cement Content, kg/m Water Content, kg/m 850 850 850 765 465 465 370 419 50 50 Slump, mm Compressive Strength, MPa 50 100 37.8 38.0 46 37.9 c. Using water reducer, how can we improve workability without channging the compressive strength? Refer to the appropriate case in the table. d. Using water reducer, how can we reduce cost without changing workability or strength? (Assume that the cost of the small amount of water reducer added is less than the cost of cement.) Refer to the appropriate case in the table. Summarize all possible effects of water reducers on concrete.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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