Concrete Mix Design - ACI Method 1. Concrete is required for counterweights on a lift bridge that will not be subjected to freezing and thawing conditions. An average 28-day compressive strength of 31 MPa will be required. Placement conditions permit a slump of 50 to 75 mm. at point of placement and a nominal maximum size aggregate of 25 mm. An investigation of economically available materials has indicated the following: Cement: ASTM C150 Type I (non-air entraining), SG = 3.15 Fine aggregate: Specular hematite, FM = 2.30, SG (Bulk SSD) = 4.95, Abs = 0.045% Coarse aggregate: Hematite, SG (Bulk SSD) = 4.65, Abs = 0.075%, dry-rodded weight = 2,600 kg/m³, nominal maximum size = 25 mm. Calculate the quantities of ingredients per cubic meter of concrete using ACI Method (absolute volume basis only for fine aggregates).

Concrete Mix Design - ACI Method 1. Concrete is required for counterweights on a lift bridge that will not be subjected to freezing and thawing conditions. An average 28-day compressive strength of 31 MPa will be required. Placement conditions permit a slump of 50 to 75 mm. at point of placement and a nominal maximum size aggregate of 25 mm. An investigation of economically available materials has indicated the following: Cement: ASTM C150 Type I (non-air entraining), SG = 3.15 Fine aggregate: Specular hematite, FM = 2.30, SG (Bulk SSD) = 4.95, Abs = 0.045% Coarse aggregate: Hematite, SG (Bulk SSD) = 4.65, Abs = 0.075%, dry-rodded weight = 2,600 kg/m³, nominal maximum size = 25 mm. Calculate the quantities of ingredients per cubic meter of concrete using ACI Method (absolute volume basis only for fine aggregates).

Traffic and Highway Engineering

5th Edition

ISBN:9781305156241

Author:Garber, Nicholas J.

Publisher:Garber, Nicholas J.

Chapter20: Design Of Rigid Pavements

Section: Chapter Questions

Problem 1P: Portland cement concrete consists of what four primary elements?

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Pavement Management

Pavement management is the process of planning the maintenance and repair of a roadway network or other paved infrastructure to improve road conditions throughout the network. It is also used on runways and airports. Every highway superintendent undertakes walkway management. Traffic management includes the cost of living cycles in a systematic way of repairing minor and major roads and reconstruction projects. The needs of the entire network and budget estimates are considered before the projects are undertaken, as the cost of data collection can change significantly. Pavement management incorporates many of the features and functions required to maintain the quality of the paved material as well as to ensure that the entire road network can sustain itself at the required levels. Although pedestrian management involves the life cycle of commuting from planning to maintenance of any transport infrastructure, road asset management, and road maintenance planning is primarily aimed at road infrastructure.

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subject: construction management and testing

Concrete Mix Design - ACI Method
1. Concrete is required for counterweights on a lift bridge that will not be subjected to freezing
and thawing conditions. An average 28-day compressive strength of 31 MPa will be required.
Placement conditions permit a slump of 50 to 75 mm. at point of placement and a nominal
maximum size aggregate of 25 mm. An investigation of economically available materials has
indicated the following:
Cement: ASTM C150 Type I (non-air entraining), SG = 3.15
Fine aggregate: Specular hematite, FM = 2.30, SG (Bulk SSD) = 4.95, Abs = 0.045%
Coarse aggregate: Hematite, SG (Bulk SSD)=4.65, Abs = 0.075%, dry-rodded weight = 2,600
kg/m³, nominal maximum size = 25 mm.
Calculate the quantities of ingredients per cubic meter of concrete using ACI Method (absolute
volume basis only for fine aggregates).
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Step 1: Given

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Step 2: Calculation of mixing water and air content

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Step 3: Calculation of required strength and water cement ratio

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Step 4: Calculation of cement and coarse aggregate

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Step 5: Calculation of fine aggregate

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Step 6: Correction in mixing water

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