1.Question 2Refer to Appendix A for tables and equations to be used. Use the CNCI method.You are given the following design parameters for a concrete mix:The compressive strength of the concrete mix must be 40 MPa after 28 days. The cementthat is going to be used is a CEM I 52.5 with a relative density of 3.14. The stone availableis a 19.0 mm stone with a dry compacted bulk density (CBD) of 1780 kg/m³ and a relativedensity of 2.24. An average, natural sand with a fineness modulus of 2.45 and a relativedensity of 2.86 is going to be used for the mix. The slump on site is specified as 75 mm.The concrete is going to be compacted by moderate vibration on site.Calculate and show the amount of water, cement, stone and sand that is needed to makeup 1 m of concrete mix as specified above.water requirementinlitersw:c ratio• Cement content (kg/m3 of concrete) =• Mst = CBDS: (K – 0.1 FM)M.M..• Vols = 1000 –(+D. APPENDIX ATo be given in with the answering bookName:Student number:APPENDIX BTable 1: w:c ratios for certain cementitious materials:Water:cement(w:c) ratioSpecifiedstrength ofmix(28 days.MPa)CEM I 32.5 MPaCEM I 42.5 MPACEM I 52.5 MPa0.720.8299'00.61250.670.770.620.570.560.720.530.5350.670.520.62Table 2: water requirement for a concrete mix where 19.0 mm aggregate is useand a 75 mm slump is specified:Water content I/m3Sand qualitynaturalcrusherVery poor240235225225Joodaverage210215195205poobexcellent180195Table 3: values of K for determining stone content:Approximate slumpcompactionMaximum size of stone. mmrange. mm9.513.219.026.537.5Hand75 - 1500.750.840.941.05compactionModeratevibration00'25 - 1000.800.801.061.1000'L0 - 25Heavy vibration00'L1.051.101.15Formula's for calculating the material requirements for a concrete mix design:

As per the given information we have calculate the following things which are: amount of water…

Questión 2 Refer to Appendix A for tables and equations to be used. Use the CNCI method. You are given the following design parameters for a concrete mix: The compressive strength of the concrete mix must be 40 MPa after 28 days. The cement that is going to be used is a CEM I 52.5 with a relative density of 3.14. The stone available is a 19.0 mm stone with a dry compacted bulk density (CBD) of 1780 kg/m³ and a relative

Questión 2 Refer to Appendix A for tables and equations to be used. Use the CNCI method. You are given the following design parameters for a concrete mix: The compressive strength of the concrete mix must be 40 MPa after 28 days. The cement that is going to be used is a CEM I 52.5 with a relative density of 3.14. The stone available is a 19.0 mm stone with a dry compacted bulk density (CBD) of 1780 kg/m³ and a relative

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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Note:hand written solution should be avoided.
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PROBLEM 1 Given the following parameters, design a Concrete Mix Design ACI Method Required average strength will be 28MPa with slump of 75 to 100mm. The coarse aggregate has a nominal maximum size of 25 mm and a dry-rodded mass of 1900kg/m'. Other properties of the ingredients are: Cement Type I specific gravity 3.15 Coarse aggregate bulk specific gravity 2.75 absorption 3% Fine aggregate bulk specific gravity 2.68 absorption 1.2 % fineness modulus 3 Adjustment for Aggregate Moisture: Tests indicate total moisture of 5 percent in the coarse aggregate and 8 percent in the fine aggregate.
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Please solve only Question-4 and please step by step thanks for the helping and it is not assgiment or exam queastion.
Choose the correct answer from the followings Use ACI method to design a concrete mix which is required to obtain f'c28 = 34.5MPa and a slump of 75mm . The fineness modulus of the aggregate is 3.0 , the bulk density of coarse aggregate is 1600 kg/m² and the maximum size is 25. Both the specific gravity of fine and coarse aggregate are 2.68. neglect the absorption and total moisture content . 1- The W/C ratio is * a-0.74 b-0.48 c-0.57 d-0.61 2- The cement content is * 420 kg/m3 240 kg/m3 204 kg/m3 402 kg/m3 3- The carse aggregate content is * 1140 kg/m3 1004 kg/m3 1040 kg/m3 1400 kg/m3 4- The fine aggregate content is * 807 kg/m3 780…
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