➤ 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%

➤ 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%

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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Concept explainers

Types of Concrete

Concrete is the fundamental material used in civil engineering such as building materials for building structures. Concrete is an aggregate mixture of cement, sand, and fine and coarse rock pieces. The cement acts as a binding material that holds the compositions together, sets, and hardens with time. Apart from cement, there are other different types of binding materials used, such as lime concrete, bitumen, asphalt, and so on.

Question

➤ 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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