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May 11, 2022

Code Requirements for Determining Fire Resistance of Concrete and Masonry Construction Assemblies 1

Code Requirements for Determining Fire Resistance of Concrete and Masonry Construction Assemblies

Leave a Comment / Civil Books Platform, Concrete Structures Books /

Description This standard describes acceptable methods for determining the fire resistance of concrete building and masonry buildingassemblies and structural elements, including walls, floor and roof slabs, beams, columns, lintels, and masonry fireprotection for structural steel columns. These methods shallbe used for design and analysis purposes and shall be based on the fire exposure and applicable […]

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Code Requirements for Determining Fire Resistance of Concrete and Masonry Construction Assemblies 2

Code Requirements for Determining Fire Resistance of Concrete and Masonry Construction Assemblies

Leave a Comment / Civil Books Platform, Concrete Structures Books /

Description This standard provides requirements for determining fire resistance of concrete and masonry elements and assem-blies. Calculation procedures for determining fire resistance are provided for concrete walls, floors, roofs, and columns and masonry walls, lintels, and columns. Procedures are also included for determining requirements for concrete cover, protection of structural steel columns using concrete or

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Guide for Obtaining Cores and Interpreting Compressive Strength Results 3

Guide for Obtaining Cores and Interpreting Compressive Strength Results

Leave a Comment / Civil Books Platform, Concrete Structures Books /

Description Core testing is the most direct method to determine the in-place compressive strength of concrete in a structure.Generally, cores are obtained to:•Assess, if required, whether concrete in a new structurecomplies with strength-based acceptance criteria; or•Determine in-place concrete strengths in an existingstructure for evaluation of structural capacity.In new construction, cylinder strength tests failing to meetstrength-based

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Report on Chemical Admixtures for Concrete 4

Report on Chemical Admixtures for Concrete

Leave a Comment / Civil Books Platform, Concrete Structures Books /

Description An admixture is defined as “a material other than water,aggregates, hydraulic cement, and fiber reinforcement usedas an ingredient of concrete or mortar, and added to the batchimmediately before or during its mixing” (AmericanConcrete Institute 2010; ASTM C125). Chemical admixturesare primarily water-soluble substances used to enhance theproperties of concrete or mortar in the plastic and

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Guide for Submittal of Concrete Proportions 5

Guide for Submittal of Concrete Proportions

Leave a Comment / Civil Books Platform, Concrete Structures Books /

Description Project specifications, reference publications, drawings, and other contract documents contain the requirements for concrete materials, proportions, and characteristics. Concrete mixtures intended to satisfy these requirements are usually submitted based on field test results, laboratory trial mixture data, or both. The purchaser’s acceptance of mate-rials and mixtures is based on conformance of the submitted details

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Guide for Selecting Proportions for High-Strength Concrete Using Portland Cement and Other Cementitious Materials 6

Guide for Selecting Proportions for High-Strength Concrete Using Portland Cement and Other Cementitious Materials

Leave a Comment / Civil Books Platform, Concrete Structures Books /

Description ACI 211.1 describes methods for selecting proportions for normal-strength concrete in the range of 2000 to 6000 psi. This guide supplements ACI 211.1 by presenting several methods for selecting mixture proportions for high-strength concrete and for optimizing these proportions on the basis of trial batches. Usually, for high-strength concrete mixtures specially selected cementitious materials

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Guide for Selecting Proportions for No-Slump Concrete 7

Guide for Selecting Proportions for No-Slump Concrete

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Description The general comments contained in ACI 211.1 are pertinent to the procedures discussed in this guide. The description ofthe constituent materials of concrete, the differences in proportioning the ingredients, and the need for knowledge ofthe physical properties of the aggregate and cementitious materials apply equally to this guide. The level of overdesignindicated in ACI

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Standard Practice for Selecting Proportions for Structural Lightweight Concrete (ACI 211.2-98) 8

Standard Practice for Selecting Proportions for Structural Lightweight Concrete (ACI 211.2-98)

Leave a Comment / Civil Books Platform, Concrete Structures Books /

Description Standard Practice for Selecting Proportions for Structural Lightweight Concrete. The purpose of this standard is to provide generally applicable methods for selecting and adjusting mixture proportions for structural lightweight concrete. These methods are also applicable to concrete containing a combination of lightweight and normal weight aggregate. Discussion in this standard is limited to structural

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Standard Practice for Selecting Proportions for Normal, Heavyweight, and Mass Concrete 9

Standard Practice for Selecting Proportions for Normal, Heavyweight, and Mass Concrete

Leave a Comment / Civil Books Platform, Concrete Structures Books /

Description Concrete is composed principally of aggregates, aportland or blended cement, and water, and may containother cementitious materials and/or chemical admixtures. Itwill contain some amount of entrapped air and may alsocontain purposely entrained air obtained by use of an ad-mixture or air-entraining cement. Chemical admixtures arefrequently used to accelerate, retard, improve workability,reduce mixing water requirements,

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Guide for Modeling and Calculating Shrinkage and Creep in Hardened Concrete 10

Guide for Modeling and Calculating Shrinkage and Creep in Hardened Concrete

Leave a Comment / Civil Books Platform, Concrete Structures Books /

Description To predict the strength and serviceability of reinforced andprestressed concrete structures, the structural engineer requiresan appropriate description of the mechanical properties of thematerials, including the prediction of the time-dependantstrains of the hardened concrete. The prediction of shrinkageand creep is important to assess the risk of concrete cracking,and deflections due to stripping-reshoring. As discussed inACI

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Report on Factors Affecting Shrinkage and Creep of Hardened Concrete 11

Report on Factors Affecting Shrinkage and Creep of Hardened Concrete

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Description Factors affecting shrinkage and creep of hardened concrete are presented to enable those involved in the evaluation and formulation of concrete mixtures to determine the effects of these factors. Section 1.2 of Chapter 1 defines terms used by those evaluating shrinkage and creep, while Chapters 2 and 3describe effects of various factors on shrinkage

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Report on Roller-Compacted Mass Concrete 12

Report on Roller-Compacted Mass Concrete

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Description Roller-compacted concrete (RCC) is probably the most important development in concrete dam technology in the past quarter century. The use of RCC has allowed many new dams to become economically feasible due to the reduced cost realized from the rapid construction method. It also has provided design engineers with an opportunity to economically rehabilitate

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Cooling and Insulating Systems for Mass Concrete 13

Cooling and Insulating Systems for Mass Concrete

Leave a Comment / Civil Books Platform, Concrete Structures Books /

Description The need to control volume change induced primarily by temperature change in mass concrete often requires cooling and insulating systems. This report discusses three construction procedures used to control temperature changes in concrete structures: precooling of materials, post cooling of in-place concrete by embedded pipes, and surface insulation. Other design and construction practices, such

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Practices for Evaluation of Concrete in Existing Massive Structures for Service Conditions 14

Practices for Evaluation of Concrete in Existing Massive Structures for Service Conditions

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Description Deteriorating infrastructure continues to be a growing concern. Accurate information on the condition of concrete in a massive structure is critical to evaluating its safety and service ability. This information is required by decisionmakers to determine if repair or replacement is necessary and to select optimum repair techniques where conditions require. The guidelines for

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Report on Thermal and Volume Change Effects on Cracking of Mass Concrete 15

Report on Thermal and Volume Change Effects on Cracking of Mass Concrete

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Description This report is primarily concerned with evaluating the thermal behavior of mass concrete structures to control the cracking in members that occurs principally from thermal contraction with restraint. This report presents a detailed discussion of the effects of heat generation and volume changes on the design and behavior of mass concrete elements and structures,

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