A contractor in Kota Kinabalu is tasked to build a sewerage in a local housing area, which will be a reinforced concrete structure. As an engineer, you are required to design the concrete mixture which will meet the following requirements: Mean strength = 50 N/mm² (at 28-day) Workability = 100 mm Coarse aggregate = uncrushed, maximum size 20 mm, specific gravity 2.6. Sand = uncrushed, specific gravity 2.6, 60% passing 600µm sieve. In order to satisfy the current BS requirements, a minimum cement content of 400 kg/m³ and maximum water cement ratio of 0.45 have been recommended.
A contractor in Kota Kinabalu is tasked to build a sewerage in a local housing area, which will be a reinforced concrete structure. As an engineer, you are required to design the concrete mixture which will meet the following requirements: Mean strength = 50 N/mm² (at 28-day) Workability = 100 mm Coarse aggregate = uncrushed, maximum size 20 mm, specific gravity 2.6. Sand = uncrushed, specific gravity 2.6, 60% passing 600µm sieve. In order to satisfy the current BS requirements, a minimum cement content of 400 kg/m³ and maximum water cement ratio of 0.45 have been recommended.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Concrete mix design form
![A contractor in Kota Kinabalu is tasked to build a sewerage in a local housing area, which will be a reinforced
concrete structure. As an engineer, you are required to design the concrete mixture which will meet the
following requirements:
Mean strength
= 50 N/mm2 (at 28-day)
Workability
= 100 mm
Coarse aggregate = uncrushed, maximum size 20 mm, specific gravity 2.6.
Sand
= uncrushed, specific gravity 2.6, 60% passing 600µm sieve.
In order to satisfy the current BS requirements, a minimum cement content of 400 kg/m³ and maximum
water cement ratio of 0.45 have been recommended.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F9cb338dc-579b-42d5-9984-3a10930be783%2Fa986214f-bb0a-4bd7-aa03-d24807f9a94e%2Fo2r2um5s_processed.png&w=3840&q=75)
Transcribed Image Text:A contractor in Kota Kinabalu is tasked to build a sewerage in a local housing area, which will be a reinforced
concrete structure. As an engineer, you are required to design the concrete mixture which will meet the
following requirements:
Mean strength
= 50 N/mm2 (at 28-day)
Workability
= 100 mm
Coarse aggregate = uncrushed, maximum size 20 mm, specific gravity 2.6.
Sand
= uncrushed, specific gravity 2.6, 60% passing 600µm sieve.
In order to satisfy the current BS requirements, a minimum cement content of 400 kg/m³ and maximum
water cement ratio of 0.45 have been recommended.
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