The following table represents a concrete mixture that has not been completely proportioned. The values given are the theoretical mixture proportions (oven dry basis). Material properties are also provided. Please answer the question at the end of the information given. Theoretical Mixture Proportions (oven dry basis) Water 265 lb/yd³ Cement 675 lb/yd³ Air 6.00 % Coarse Aggregate 1816 Ib/yd³ ASTM C 150 Type I Cement: Specific Gravity: 3.15 Coarse Aggregate: Well-graded 3/4 in. NMSA rounded gravel Oven-dry specific gravity: 2.63 Absorption: 1.10% Moisture content of stockpile: 3.10 % Oven-dry bulk density: 101.5 Ib/ft³ Fine Aggregate: Natural Sand Oven-dry specific gravity: 2.60 Absorption: 3.20% Moisture content of fine stockpile: 3.50 % Fineness Modulus: 2.80 What is the quantity in Ib/yd³ of coarse aggregate to batch for this mixture given its current stockpiled moisture content? Round to the nearest whole number and do not include units when entering your answer.

The following table represents a concrete mixture that has not been completely proportioned. The values given are the theoretical mixture proportions (oven dry basis). Material properties are also provided. Please answer the question at the end of the information given. Theoretical Mixture Proportions (oven dry basis) Water 265 lb/yd³ Cement 675 lb/yd³ Air 6.00 % Coarse Aggregate 1816 Ib/yd³ ASTM C 150 Type I Cement: Specific Gravity: 3.15 Coarse Aggregate: Well-graded 3/4 in. NMSA rounded gravel Oven-dry specific gravity: 2.63 Absorption: 1.10% Moisture content of stockpile: 3.10 % Oven-dry bulk density: 101.5 Ib/ft³ Fine Aggregate: Natural Sand Oven-dry specific gravity: 2.60 Absorption: 3.20% Moisture content of fine stockpile: 3.50 % Fineness Modulus: 2.80 What is the quantity in Ib/yd³ of coarse aggregate to batch for this mixture given its current stockpiled moisture content? Round to the nearest whole number and do not include units when entering your answer.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

Wi 100 Q1/ If the weight of Cement is 3000 g and the mix proportion is 1:4:8 Calculate the following: W/C=0.35 1050mL W/C = 0.57 1710mL 1218 kg 24 148 1) The amount of water for 2) The amount of water for 3) Find the weight of fine aggregate = 4) Find the weight of coarse aggregate = kg
The recommended dosage on a viscosity modifying admixture is 5 fl oz/cwt. The proportions of the concrete mix by weight were; Coarse aggregate = 1800 lb Fine aggregate = 1120 lb Cement = 480 lb Fly ash = 140 lb water = 280 lb What dosage of admixture should be added?
6. A sample of lightweight coarse aggregate weighs 532.3 g when oven-dried, 615.7 g when saturated surface-dried, and 191.3 g when submerged. Calculate the bulk specific gravity, apparent specific gravity, and percent absorption.
The composition of an air-entrained concrete is given below: Water: 184 kg/m³ Ordinary Portland cement (OPC): 368 kg/m³ Sand: 606 kg/m³ Coarse aggregate: 1155 kg/m³ Assume the specific gravity of OPC, sand and coarse aggregate top be 3.14, 2.67 and 2.74, respectively. The air content is litres/m³.
4) Use the results in tables 5 & 6 to plot the following graphs; slump vs. water content (L/m^3), fresh compacted density vs. water to cement ratio and fresh compacted density vs. water content (L/m^3). Weight of fresh concrete + bucket (kg) weight of density bucket fresh concrete Total weight of Mix weight of w/c ratio mix (kg) (kg) 1 80 0.4 9.08 2.70 6.38 8.90 2.70 6.20 2 80 0.5 3 80 0.6 8.78 2.70 6.08 Table 5: Shows the w/c ratio and the weight of the fresh concrete for each mixture. MIX FINE (Kg) COARSE (Kg) Cement (Kg) water (L) A/C w/C F/C Slump (mm) 34.29 3.5 40/60 40/60 1 22.86 16.33 6.53 0.4 5 2 22.40 33.60 16.00 8.00 3.5 0.5 50 3 21.96 32.94 15.69 9.41 3.5 0.6 40/60 collapse Table 6: Shows the proportions and recorded slump values of each mixture. Refer to lab script for further details.
Compare materials quantity for M30 grade of concrete?
A concrete mix with a 75 mm slump, w/c ratio of 0.50, and sand with a fineness modulus of 2.4 contains 1009 kg/m3 of coarse aggregate. Compute the required mass of coarse aggregate per cubic meter. To adjust the mix so as to increase the compressive strength, the water–cement ratio is reduced to 0.45. Will the quantity of coarse aggregate increase, decrease, or stay the same? Explain your answer.
Show your solution and All answers must be in STORED VALUES and your final answers must be in four decimal places. Box the final answer.
The following table provides data obtained during a specific gravity and absorption test on coarse aggregate. Using the data, determine the a) apparent bulk specific gravity, b) bulk SSD specific gravity, and c) absorption of the coarse aggregate.
For the beams and columns of a structure the followings are specified or determined. Design an appropriate concrete mix for this work on volumetric basis. Explain each step of the mix design. When you use the tables in the lecture notes, indicate the value you take from table. Give the final weights of each ingredient in tabular form at the end of your calculations (after doing adjustments for aggregate field moisture). Required average 28-day strength: 30 MPa Slump: 75-100 mm Dmax: 19 mm Dry rodded unit weight of coarse aggregate: 1700 kg/m’ ASTM Type I cement with Specific gravity=3.25 Non-air entrained concrete Density of water= 1000 kg/m³ Table 1. Aggregate information Moisture Absorption сараcity 1.2 % SSD Bulk Fineness specific gravity Modulus content Coarse 2.71 0.8 % aggregate Fine aggregate 2.66 1.5 % 2.5 % 2.8 [5 pts] 4) Same concrete mix is cast at two locations, A and B. 1 hour after mixing, the slump loss at A is 5 cm and the slumn loss at R is 10 cm Could vou…
The relative density of cement is 3.5. Ans for a): 3%; b) cement 12.7%, water 18.0%, coarse agg 42.1%, fine agg 24.2%
The relative amounts of the four chemicals in the final cement depends on the desired properties of the cement concrete. The table below gives the typical compound composition of different types of Portland cements Compound Composition No. C3S C,S C3A C4AF 1 60 13 9. 8 40 40 4 3 26 50 5 12 4 50 24 11 5 42 33 5 13 Depending on the properties of the different chemicals and their relative composition, identify the high early strength (HE) and low-heat (LH) cements from the table. Give detail explanation for your answer