(c) What is the requirement of workability in concrete mix? How consistency is different from workability?
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Q: What is the maximum aggregate size that can be used in concrete for the following conditions:
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Q: Define the following terms:a. Saturated surface-dry condition of aggregatesb. Absorption of…
A: Hi! Thank you for the question, as per the honor code, we are allowed to answer three sub-parts at a…
Q: Same concrete mix is cast at two locations, A and B. 1 hour after mixing, the slump oss at A is 5…
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- Portland cement concrete consists of what four primary elements?What is the relationship of rodded bulk density to percentage voids in aggregates? What is the purpose of this two? How can this two affect the concreteThe design engineer specifies a concrete strength of 3700 psi. A plant where s = 300 psi for 41 test results. Which is the required average compressive strength to be used in your mix design? a. 3900 psi; b) 4000 psi; c)4 100 psi; d) 4200 psi
- Absorption and porosity of aggregate will affect the w/c ratio and workability of concrete. Justify the statement.How does the increase of maximum aggregate size used in the concrete mix design affect the percentage of fine aggregates needed for the mix? Explain why this is the case.A concrete mix design uses coarse aggregates with NMAS of 19 mm. Fineness modulus of 2.8 and DRUW of 135 lb/ft^3. What is the mass of Coarse aggregates in the mix?
- Q1 What moisture condition should the coarse and fine aggregate be in when mixing the concrete? A Unknown B Saturated C Oven Dry D Air Dried E SSD Q2 What restriction is placed on the size of a sample of a concrete batch? A 30 L B 15 L C 20 L D 10 L E 5 LIn proportioning a concrete mix, the coarse and fine aggregates had the following properties respectively; Coarse: Dry weight: 800lb, 3,2% MC, 2.0% AC, Fine: Dry weight 350 lb, 1.2% MC, 2.9% AC. How much should the water be adjusted to account for the agregate moisture?Give 3 factors that give a good plasticity to a concrete mix
- what is the requirement volume of fine aggregates (s.g. = 2..4) if the mass nedded for the concrete mix is 850 kg?In the normal consistency of paste cement, If I get 30 percent normal consistency, what does it imply? What is result of the concrete if I use this product. explain explicitlyDesign the concrete mix according to the following conditions:Design EnvironmentBuilding frameRequired design strength = 27.6 MPaMinimum dimension = 150 mmMinimum space between rebar = 40 mmMinimum cover over rebar = 40 mmStatistical data indicate a standard deviation of compressive strength of2.1 MPa is expected (more than 30 samples).Only air entrainer is allowed.Available MaterialsAir entrainer: Manufacture specification 6.3 mL/1% air/100 kg cement.Coarse aggregate: 19 mm nominal maximum size, river gravel (rounded)Bulk oven-dry specific gravity = 2.55, absorption = 3.6,Oven-dry rodded density = 1761 kg/m3Moisture content = 2.5,Fine aggregate: Natural sandBulk oven-dry specific gravity = 2.659, absorption = 0.5,Moisture content = 2,Fineness modulus = 2.47