Create a design mix using the ACI DESIGN MIX PROCEDURE with the following parameters: Non-air Entrained Concrete Required Strength = 35 MPa Required Slump = 6 inches Maximum Size of CA = 3/4 inches Fineness Modulus of CA = 2.45 Density of CA = 1555 Kg/m3 SG of Water = 1.00 SG of Cement = 3.15 SG of CA = 2.84 SG of FA = 2.40

Create a design mix using the ACI DESIGN MIX PROCEDURE with the following parameters: Non-air Entrained Concrete Required Strength = 35 MPa Required Slump = 6 inches Maximum Size of CA = 3/4 inches Fineness Modulus of CA = 2.45 Density of CA = 1555 Kg/m3 SG of Water = 1.00 SG of Cement = 3.15 SG of CA = 2.84 SG of FA = 2.40

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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You are working on a concrete mix design that requires each cubic yard ofconcrete to have 0.45 water–cement ratio, 1165 kg/m3 of dry gravel, 4% air content, and 335 kg/m3 of cement. The available gravel has a specific gravity of Ggravel = 2.7, a moisture content of 1.6%, and absorption of 2.4%. The available sand has a specific gravity of Gsand = 2.5, a moisture content of 4.8%, and absorption of 1.5%. For each cubic meter of concrete needed on the job, calculate the mass of cement, moist gravel, moist sand, and water that should be added to the batch. Summarize and total the mix design when finished (don’t include air entrainer in summary).
Which of the options are correct for a 3m³ of concrete having design mix proportion of 1:2:7 (by volume) A Volume of cement required = 0.318 m³ B No. of cement bags required = 15 C D Volume of coarse aggregate = 2.5 m³ Volume of water required = 1m³
➤ GOAL: Design a concrete mixture for the following specifications • Plain concrete interior beam •Required average 28 day compressive strength of the concrete, f'c = 30 MPa Exposure Condition: Very Mild (protected from cold weather, chemicals, etc) •No admixture needed TYPE I PORTLAND CEMENT Specific Gravity (SG) 3.15 FINE AGGREGATE (natural sand) Bulk dry SG 2.64 Fineness Modulus 2.80 Moisture Content (MC) op 6% Absorption Capacity (AC) 0.7% COARSE AGGREGATE (well graded gravel, some crushed) Bulk dry SG 2.70 Dry-Rodded Unit Weight 1600 kg/m³ Nominal Maximum Size Aggregate 37.5 Moisture Content (MC) SSD 0.5% Absorption Capacity (AC) 1.3%
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We require a mix with a mean 28-day compressive strength of 40 MPa the size of the member and the spacing of the reinforcement require a slump of 45 mm and a maximum size of aggregate of 28 mm. Portland cement type I is used with specific gravity of 3.15, dry-rodded unit weight of coarse aggregate 1750 kg/m³ and bulk specific gravity (SSD) of 2.55. The fineness modulus of fine aggregate is 2.8 and bulk specific gravity (SSD) of 2.5 ,No air entrainment is required. Neglect water absorption and moisture content of both aggregates. The aggregates conform to the ASTM C33-84 requirements for grading. Estimate the quantity of (cement, fine aggregate, coarse aggregate and water) for 1m³ concrete.
Design the concrete mix according to the following conditions:Design Environment• Building beamo Required design strength = 27.6 MPao Minimum dimension = 150 mmo Minimum space between rebar = 40 mmo Minimum cover over rebar = 40 mmo Statistical data indicate a standard deviation of compressive strengthof 2.1 MPa is expected (more than 30 samples).• Only air entrainer is allowed.• Moderate Sulphate exposure.• Available Materialso Air entrainer:▪ Manufacture specification 6.3 mL/1% air/100 kg cement.o 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/m3▪ Moisture content = 2.5o Fine aggregate:▪ Natural sand▪ Bulk oven-dry specific gravity = 2.659▪ Absorption = 0.5▪ Moisture content = 2▪ Fineness modulus = 2.47o Cement▪ Type II (Moderate Sulphate Resistant)▪ Specific Gravity = 3.15Based on this information, find the following and summarize the findings in a table d) The amount…
Design a non-air entrained concrete mixture based on ACI volume method to satisfy the following requirements: • Assume required average compressive strength is 35 MPa • slump = 150mm The following materials are available: Cement: Type I, specific gravity = 3.15 Coarse agg: nominal maximum size = 19mm specific gravity (SSD) = 2.7 dry rodded unit weight (oven dry) = 1550 kg/m³ absorption capacity = 0.9% effective absorption = 0.7% Fine agg: specific gravity (SSD) = 2.7 fineness modulus = 2.4 absorption capacity = 1.1% moisture content = 3.5%
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subject: construction management and testing
Compare the compressive strength and the splitting tensile strength.of following concrete.