You are asked to design a concrete mixture. Concrete mix design should consider the following below;1. The 28-day target strength should be 30 MPa.2. Concrete will be used for a deck of a residential building at Tynemouth, Newcastle upon Tyne,England.3. Deck is composed of 3 cm reinforcement and there is no need for piers.Hint: Decks that need piers or footings must have them installed below the frost line. This will keepthe piers from heaving up out of the ground from the strength of the freeze.4. (a) Use mixture design charts (same charts used in CE208 Materials of Constructioncourse),(b) Please assume appropriate necessary mixture design parameters or values for the missingones in order to attain the required target strength. SHOW ALL YOUR ASSUMPTION ANDVALUES CLEARLY.5. (a) Use ACI Method of mix design,(b) Use BS Method (BRE) of mix design.6. Determine the overall cost of both methods7. Assume that 30% GGBS and 20% fly ash is to be used as a replacement to Portland cementin your design. Make necessary arrangements and calculations as suggested by the method ofselection.8. Provide a brief conclusion about sustainability based on the results obtained in step 7 above.Briefly, discuss the effect of using GGBS and fly ash on economic (cost) and environmental(carbon dioxide (CO2 emissions)) sustainability.

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You are asked to design a concrete mixture. Concrete mix design should consider the following below; 1. The 28-day target strength should be 30 MPa. 2. Concrete will be used for a deck of a residential building at Tynemouth, Newcastle upon Tyne, England. 3. Deck is composed of 3 cm reinforcement and there is no need for piers. Hint: Decks that need piers or footings must have them installed below the frost line. This will keep the piers from heaving up out of the ground from the strength of the freeze.

You are asked to design a concrete mixture. Concrete mix design should consider the following below; 1. The 28-day target strength should be 30 MPa. 2. Concrete will be used for a deck of a residential building at Tynemouth, Newcastle upon Tyne, England. 3. Deck is composed of 3 cm reinforcement and there is no need for piers. Hint: Decks that need piers or footings must have them installed below the frost line. This will keep the piers from heaving up out of the ground from the strength of the freeze.

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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Q. Using the British methods, design a concrete mix to bear an average compressive strength of 35 MPa at 28 days, to cast a room slab with the following dimensions (5 width x 4 length x 0.2 depth m) and 200 mm space distance of reinforcement. Consider the following properties: o Cement used is type I Portland cement ® Required slump = 30 — 60 mm o Coarse aggregate: ® Crushed rocks * Maximum size of 40 mm, e The fine aggregate: * Crushed rocks = Falls in zone 3 o Assume zone A for figure 1 o AssumeK = 1.64
➤ 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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