The materials engineer made a design mix ofthe following masses of material that arerequired for 1 m³ of concrete.MaterialBatch mass, kgCement260Fly ashSSD sand (absorption 1.5%)SSD coarse aggregate (absorption 1.0%) 1160Mixing water90599148However, during construction, the availablestockpiled sand has a total moisture contentof 5.5% and the coarse aggregate has a totalmoisture content of 2.5%. Compute theadjusted sand (fine aggregate) mass in kg.Express your answer with 2 .decimal places.

SSD sand with absorption 1.5% required = 599 kg Therefore the mass of dry sand required will be: Md…

Answered: The materials engineer made a design…

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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According to ACI 211 we require a mix with a mean 28-day compressive strength (measured on standard cylinders) of 40MPa and a slump of 25 mm, Q1 ordinary Portland cement being used. The maximum size of well-shaped, angular aggregate is 10 mm, its bulk density is 1700 kg/m3, and its specific gravity is 2.7. The available fine aggregate has a fineness modulus of 2.60 and a specific gravity of 2.58. No air entrainment is required.
Designing a concrete that will be exposed to groundwater, the chemical analysis of which is given in Table 1. is requested. a) For 1 m3 of concrete, assuming the air gap is 1%, according to the relevant impact class specified in TS EN 206 Calculate the amount of material needed. (Maximum grain size of A1, A2, A3 aggregates to be used in the mixture) has a diameter of 16 mm and is in SDYK state, and the physical properties and mixing ratios of the aggregates are given in Table 2.) b) The ratio of cement kneading water to be used in production is 28%, volumetric shrinkage of cement paste Calculate the shrinkage that will occur in the concrete, assuming that the absolute volume of cement is 1%. from shrinkage Find the tensile stress that will occur in the concrete due to Whether cracks will occur in the concrete due to shrinkage, Considering the static elasticity modulus (secant modulus) of the concrete given below in the “stress-strain” diagram. take it and check it. Note: In the…
The requirements and material properties of an air entrained concrete mix are given below. Calculate the weights of the components of 1 m3 of concrete. Water content: 200 kg/m3 Air content: 7.5% W/C: 0.45 (By Weight). Dry aggregate volume in 1 m3 concrete mixture: 0.44 m3 Specific Gravity (g/em3 ) water absorption capacity (%) Total Moisture (%) Cement 3.15 Fine aggregate (saturated surface dry) 2.65 1.3 5.5 Coarse aggregate (saturated surface dry) 2.7 0.5 1.5 Dry unit weight of coarse aggregate is 1,500 kg / m3. 'kind
Q3B
What is the weight of fine aggregates in kilograms needed for the design mix? Use three decimal places in the computation of volumes Use two decimal places for the computed weight of fine aggregates
Note:hand written solution should be avoided.
One cubic yard of fresh concrete mix includes 1900 lbs coarse and 1150 lbs fine aggregates. Water-cement ratio (W/C) for the mix is 0.5. Given information: Concrete weight = 150 pcf Weight of standard cement bags 94 lbs Water weight = 8.34 pounds per gallon Approximately how many bags of Portland cement should be added to each cubic yard of this mix? 4 bags 5 bags 6 bags 7 bags
Working on major construction project that requires considerable amounts of concrete to be used,you are asked to design a concrete mix following the BRE methodology. All the necessary tables forthis can be found in the Appendix. The concrete mix specifications are:o Characteristic compressive strength of 35 N/mm 2 at 28 days.o Failure rate of 2%o Previous control data yielded a standard deviation of 10 N/mm 2o CEM-I 42.5o Air-entraining is not requiredo Maximum water to cement ratio 0.40o Minimum cement content 390 kg/m 3o Required slump 50 mmo Coarse aggregate: Crushed maximum size 20mmo Fine aggregate: Uncrushed with 90% passing 600 μm sieveo Relative density of aggregates: 2.5o Coarse aggregate has 4% moistureo Fine aggregate is dry and has 1.2% absorption.o Volume of the required trial mix: 0.090 m 3Following the BRE step-by-step process estimate the water content of the mix estimate the content of aggregates, provide the estimated mix quantities
For the given concrete mix design below, calculate the field weight of the ingredients in kg's if the absorption capacities of both aggregates are 2% and both aggregates became oven dry after a very sunny day? Weight in kg per m³ 300 Ingredient Cement Water SSD Coarse aggregate SSD Fine aggregate Water: Seç Coarse aggregate: Seç Fine aggregate: Seç... → + 150 1020 816
Using given data and formulas, calculate evaporable moisture, surface moisture and absorption
Plaese do question-3
A concrete mixture contains 250 lbs./yd3 of water, and 555 lbs./yd3 of cement. Calculate the w/c for the mix design: 0.45 0.55 2.22 0.60 0.50

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