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Performance Specifications for Durable Concrete

Performance Specifications for Durable Concrete

Performance Specifications for Durable Concrete

Unlike a prescriptive specification that defines a concrete mixture in terms of its constituents and their proportions, a performance specification defines a concrete mixture in terms of measurable plastic and hardened properties that show the mixture will satisfy certain performance criteria. The difference between these two approaches can be illustrated by looking at durability.

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Jul 01, 1996  Published by Eisevier Science Ltd Printed in Great Britain 0950-0618/96 $15.00+0.00 0950-0618(95)00015-1 A performance specification for durable concrete D. W. S. Ho* and G. J. Chirgwint * CSIRO Division of Building, Construction and Engineering, Highett, Victoria, Australia t Bridge Branch, Roads and Traffic Authority ofNSW, Australia Received ...

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The American Concrete Institute. Founded in 1904 and headquartered in Farmington Hills, Michigan, USA, the American Concrete Institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensus-based standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete design ...

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With the use of water sorptivity in quantifying the quality of concrete, this paper discusses the deficiencies in the common practice of specifying concrete for reinforcement protection. The paper also demonstrates how water sorptivity can be used as a simple performance criterion for specifying durable concrete.

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Durable and Sustainable Concrete Through Performance ...

specifications for performance-engineered concrete mixtures utilized for other infrastructure (bridges, lower grade uses, etc.) as well. Development and implementation of performance-related specifications is an extensive undertaking, and the shift will impact all stakeholders in the construction process.

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Performance Based Design for Durability - The Concrete Portal

The goal of performance-based specifications is to ensure that an acceptable probability of adequate durability performance is achieved. A shift from prescriptive to performance specifications is one of the important steps necessary to address the serious shortcomings that are often apparent in current reinforced concrete construction.

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For the purposes of this specification, high performance concrete (HPC) is considered as concrete engineered to meet specific needs of a project; including: mechanical, durability, or

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A PERFORMANCE SPECIFICATION FOR DURABLE CONCRETE

A PERFORMANCE SPECIFICATION FOR DURABLE CONCRETE. The lack of durability of reinforced concrete structures often refers to the corrosion of the reinforcing steel and the subsequent spalling of the cover concrete. With the use of water sorptivity in quantifying the quality of concrete, this paper discusses the deficiencies in the common practice ...

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Durable and Sustainable Concrete Through Performance ...

specifications for performance-engineered concrete mixtures utilized for other infrastructure (bridges, lower grade uses, etc.) as well. Development and implementation of performance-related specifications is an extensive undertaking, and the shift will impact all stakeholders in the construction process.

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Guide Specification for High Performance Concrete for

For the purposes of this specification, high performance concrete (HPC) is considered as concrete engineered to meet specific needs of a project; including: mechanical, durability, or constructability properties. The document provides mandatory language that the specifier can cut and paste into project specifications. It also includes guidance

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Performance based specifications for durable concrete ...

COURSE LAYOUT WEEK 1 : Cement production and composition WEEK 2 : Cement chemistry WEEK 3 : Aggregates for concrete WEEK 4 : Chemical admixtures WEEK 5 : Chemical and Mineral admixtures WEEK 6 : Mineral admixtures WEEK 7 : High performance concrete mixture proportioning WEEK 8 : Topics in fresh concrete WEEK 9 : Topics in hardened concrete

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Guide to Durable Concrete - Portland Cement Association

Ultra-High Performance Concrete Different concretes require different degrees of durability depending on the exposure environment and the properties desired. The Specifer’s Guide for Durable Concrete , EB221, is intended to provide sufficient information to allow the practitioner to select materials and mix design parameters to achieve ...

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P2P - NRMCA

Performance Specifications for Durable Concrete – current practice and limitations (published in ACI Concrete International magazine 2006) The P2P Initiative – A Shift to Performance Specifications for Concrete Focuses on Innovation, Quality and Customer Satisfaction (NRMCA 2005) Reports – Funded by the RMC Research Education Foundation

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Moving to Performance Specifications for Concrete

Quality in the Concrete Paving Process PEM Concept Understand what makes concrete last and what failure mechanisms do we see Specify the critical properties and test for them Prepare the mixtures to meet those specifications Starting point for a performance-driven QA specification and acceptance program for states and other owner agencies

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Performance based specifications for durable concrete ...

May 06, 2019  Lecture 36

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The Case for Performance-Based Concrete Specifications

Sep 24, 2020  Concrete Expert Dr. Michael Thomas Makes the Case for Performance-Based Specs. The practice of writing prescriptive specifications originated decades ago when concrete quality control standards were not as robust as they are today. However, prescription does not assure performance and can actually result in poorer concrete quality, harsher ...

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Requirements for durable concrete

Requirements for durable concrete. Q. Assuming that concrete is made from the correct ingredients and in the correct proportions, what other requirements must be met to ensure a durable structure, that is, a structure with long life? A. The important overall requirements are related to measuring, mixing, transporting, placing, curing, and inspection (ACI 304R):

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[PDF] PERFORMANCE-BASED SPECIFICATION AND CONTROL

Service life and durability of reinforced concrete structures depend primarily on the penetrability and thickness of the concrete cover. Currently, durability specifications in most Codes and Standards are based mainly on establishing constraints to the proportions of the concrete as function of the severity of the exposure. This approach ignores, to a large extent, the different performance ...

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Sustainable Concrete: The Role of Performance-based ...

Performance-based specifications for concrete can substantially help meet this new ... detailing along with durable concrete mix designs can result in a durable concrete structure. Appropriate ...

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Recommended Practice for Design, Manufacture, and ...

86 July–August 2019 in Concrete and Mortars ASTM C1107, Standard Specification for Packaged Dry, Hydraulic-Cement Grout (Nonshrink) ASTM C1157, Standard Performance Specification for Hy- draulic Cement ASTM C1240, Standard Specification for Silica Fume Used in Cementitious Mixtures ASTM C1260, Standard Test Method for Potential Alkali Reactivity of Aggregates (Mortar-Bar Method)

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Concrete Strength and Concrete Durability, Are they ...

Sep 22, 2017  A concrete of 35MPa or 40 MPa can be a more durable concrete than a concrete of 60 MPa or 70MPa from the point of the view of durability performance indicators such

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Thoughts on Concrete Durability Performance Specifications

Jul 13, 2018  Performance Specifications. Jason Weiss, [email protected], Purdue University. Professor and Director of the Pankow Materials Laboratory. NCC Meeting April 21st, 2015 Slide 2 of 52 Approach Corrosion ... Thoughts on Concrete Durability Performance Specifications) ...

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SPECIFICATION AND PRODUCTION OF DURABLE REINFORCED CONCRETE

specification and production of durable reinforced concrete A durability design method that has been used to quantify the requirements for reinforced concrete is described. It specifies the data required and decisions that need to be taken to achieve the specified performance.

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CONCRETE INSTITUTE of AUSTRALIA The Performance of ...

1. Australian specifications enable good concrete performance if used appropriately 2. Concrete production control requires emphasis on both quality and Quantity of covercrete 3. Need to use systematic engineering approach to evaluate new construction materials

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Concrete Strength and Concrete Durability, Are they ...

Sep 22, 2017  A concrete of 35MPa or 40 MPa can be a more durable concrete than a concrete of 60 MPa or 70MPa from the point of the view of durability performance indicators such

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Concrete exposure classes - Beton Consulting Engineers

Apr 20, 2020  Concrete exposure classes are part of a decades-long trend toward performance specifications. Traditionally, specifications were prescriptive. That is, they specified what the concrete must be. So there might be limits on the water-cementitious materials ratio, the cement content, or the type of cement to use.

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Concrete Technology Advancements: New Tests and the ...

complete performance specification right away. It is significant that while the title of the specification denotes applicability to concrete roadway paving, the concepts are nearly all directly applicable to structural concrete as well. Durable Concrete Properties The AASHTO PP 84-17 specification is flexible and can be tailored to the needs of the

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Performance Specifications – What are they?

Definitions – Performance Specifications • Performance specifications: Specifications that describe how the finished product should perform over time. [For highways, performance is typically described in terms of changes in physical condition of the surface and its response to load, or in terms of the cumulative traffic required to bring the

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High Performance Fiber Reinforced Cementitious

Composites as Durable Material for Concrete Structure Repair V. C. Li Advanced Civil Engineering Materials Rese arch Laboratory Department of Civil and Environmental Engineering, University of Michigan, USA Abstract This paper addresses the property requirements of repair materials for high durabi-lity performance for concrete structure repair.

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Cement Standards and Concrete Standards

Cement Standards and Concrete Standards. ASTM's cement and concrete standards are instrumental in the evaluation and testing of concrete, cement, and aggregates. Concrete can have different properties depending upon the mixture that is used in creating it, which contains cement, chemical admixtures, and aggregates.

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Durability of Concrete Factor Affecting Durable Concrete

Mar 20, 2019  A durable concrete is one that performs satisfactorily under current exposure conditions for defined life of the structure. The ability of concrete to withstand the conditions for which it is designed without deteriorating or getting damaged for a long period of time is known as durability of concrete.

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Durability of Concrete Types of Durability and Factors ...

Feb 14, 2017  Durability is defined as the capability of concrete to resist weathering action, chemical attack and abrasion while maintaining its desired engineering properties. It normally refers to the duration or life span of trouble-free performance. Different concretes require different degrees of durability depending on the exposure environment and properties desired.

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A review on performance‐based specifications toward ...

Jun 23, 2020  In other words, concrete in the specimens cast for compressive strength bear little resemblance to the concrete in the actual structure. This paper presents a detailed review on the developments that are taking place globally toward the performance‐based specifications for achieving the long‐term durability of RC structures.

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Aggregate in Concrete - The Concrete Network

Quality Counts. Make sure that your concrete producer purchases good-quality aggregate as verified by regular aggregate test results in compliance with ASTM C 33, "Standard Specifications for Concrete Aggregates." A history of good performance of a local aggregate also provides an indication of how well the material performs in service.

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A framework for use of durability indexes in performance ...

Sep 18, 2007  Bickley JA, Hooton D, Hover KC (2006) Performance specifications for durable concrete. Concr Int 28(9):51–57. Google Scholar 9. Lobo C, Lemay L, Obla K (2005) Performance-based specifications for concrete. Indian Concr J 79(12):13–17. Google Scholar 10. AS3600-2001 Concrete Structures.

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