<![CDATA[Civil Engineering Association

<![CDATA[Civil Engineering Association - ACI]]> https://forum.civilea.com/ Wed, 26 Aug 2026 12:53:19 +0000 MyBB <![CDATA[ACI 303: Cast-in-Place Architectural Concrete Practice]]> https://forum.civilea.com/showthread.php?tid=58577 Tue, 21 Jul 2026 13:11:12 +0300 Administrator]]> https://forum.civilea.com/showthread.php?tid=58577 ACI 303-25: Cast-in-Place Architectural Concrete Practice

Author(s)/Editor(s): ACI Committee 303| Format: PDF| Quality: Scanner| Year: 2025

This guide presents recommendations for producing cast-in-place architectural concrete. The importance of specified materials, forming, concrete placement, curing, additional treatment, inspection, and their effect on the appearance of the finished product are discussed. Architectural concrete requires special construction techniques, materials, and requirements that are unique to each project. The specific recommendations and information presented in this guide should be used accordingly.

Keywords:

admixture; aggregate; architectural concrete; bush-hammer; coating; column; consolidation; cracking; curing; deflection; exposed-aggregate finish; finish; form lining; formwork; joint; joint sealant; mixture proportion; pigment; placing; quality control; release agent; repair; retarder; sealant; texture; wall.

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Author(s)/Editor(s): ACI Committee 303| Format: PDF| Quality: Scanner| Year: 2025

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]]> <![CDATA[ACI 231.1: Managing and Increasing Early-Age Strength of Low-Clinker Concrete]]> https://forum.civilea.com/showthread.php?tid=58576 Tue, 21 Jul 2026 12:35:16 +0300 Administrator]]> https://forum.civilea.com/showthread.php?tid=58576 ACI PRC-231.1-25: Managing and Increasing Early-Age Strength of Low-Clinker Concrete Mixtures

Author(s)/Editor(s): ACI Committee 231| Format: PDF| Quality: Scanner| Year: 2025| pages: 6

Various roadmaps have been developed by the cement and concrete industry that highlight the need for a significant reduction of carbon dioxide (CO2) emissions associated with concrete production. One strategy to reduce emissions is to reduce the clinker content in concrete. This can be accomplished by optimizing aggregate gradations or chemical admixtures to reduce total cement content used or use cementitious materials that have a low percent of clinker in them. However, low-clinker (content) concretes may, or may be perceived to, suffer from lower early-age strengths, which have limited their application in practice. This TechNote discusses low-clinker concrete, primarily obtained through the use of supplementary cementitious materials (SCMs), and provides practical advice concerning the strength of these mixtures at early ages (from setting to 7 days).

Keywords:

calcined clays; early-age strength; global warming potential (GWP); low-clinker concrete; silica fume; slag cement; supplementary cementitious materials (SCMs).

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Author(s)/Editor(s): ACI Committee 231| Format: PDF| Quality: Scanner| Year: 2025| pages: 6

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]]> <![CDATA[ACI 308: Curing of Concrete]]> https://forum.civilea.com/showthread.php?tid=58575 Tue, 21 Jul 2026 12:30:20 +0300 Administrator]]> https://forum.civilea.com/showthread.php?tid=58575 ACI PRC-308-26: Curing of Concrete

Author(s)/Editor(s): ACI Committee 308| Format: PDF| Year: 2026| pages: 44 | ISBN: 9781641953597

This guide reviews and describes practices, procedures, materials, and monitoring methods for the external curing of concrete and provides guidance for specifying curing procedures. Current curing techniques are presented, and commonly accepted methods, procedures, and materials are described. Methods are given for curing structures and buildings, pavements and other slabs-on-ground, and for mass concrete. Curing methods for several specific categories of cement-based products are discussed in this document.

The materials, processes, quality control measures, and inspections described in this document should be tested, monitored, or performed as applicable only by individuals holding the appropriate ACI certifications or equivalent.

Keywords:

cold weather construction; curing compound; hot weather construction; mass concrete; reinforced concrete; sealer; shotcrete; slabs-on-ground.

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Author(s)/Editor(s): ACI Committee 308| Format: PDF| Year: 2026| pages: 44 | ISBN: 9781641953597

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]]> <![CDATA[ACI 447.2: Nonlinear Finite Element Analysis of Reinforced Concrete Beams, Columns, a]]> https://forum.civilea.com/showthread.php?tid=58560 Sat, 30 May 2026 12:10:10 +0300 poolmand]]> https://forum.civilea.com/showthread.php?tid=58560 ACI 447.2-25: Nonlinear Finite Element Analysis of Reinforced Concrete Beams, Columns, and Beam-Column Joints

Author(s)/Editor(s): ACI Committee 447 | Size: 6.48 MB| Format: PDF| Quality: Scanner| Year: 2/2026

Unit: IN-LB: Inch-Pound Units and SI: International System of Units

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Author(s)/Editor(s): ACI Committee 447 | Size: 6.48 MB| Format: PDF| Quality: Scanner| Year: 2/2026

Unit: IN-LB: Inch-Pound Units and SI: International System of Units

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]]> <![CDATA[ACI 439.4-25: Steel Reinforcement—Material Properties and U.S. Availability]]> https://forum.civilea.com/showthread.php?tid=58559 Sat, 30 May 2026 12:00:51 +0300 poolmand]]> https://forum.civilea.com/showthread.php?tid=58559 ACI 439.4-25: Steel Reinforcement—Material Properties and U.S. Availability

Author(s)/Editor(s): ACI Committee 439 | Size: 5.3 MB| Format: PDF| Quality: Scanner| Year: 2026

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Author(s)/Editor(s): ACI Committee 439 | Size: 5.3 MB| Format: PDF| Quality: Scanner| Year: 2026

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]]> <![CDATA[ACI 355.5: Post-Installed Reinforcing Bar Systems in Concrete—Qualification Requireme]]> https://forum.civilea.com/showthread.php?tid=58544 Sat, 06 Dec 2025 13:37:40 +0200 poolmand]]> https://forum.civilea.com/showthread.php?tid=58544 ACI CODE-355.5-24: Post-Installed Reinforcing Bar Systems in Concrete—Qualification Requirements and Commentary

This Code prescribes testing programs and evaluation requirements for post-installed reinforcing bars intended for use in concrete under the straight-bar development and splice length design provisions of ACI CODE-318. Testing and assessment criteria are provided for various conditions of use, including seismic loading, sustained loading, aggressive environments, and reduced and elevated temperatures. Criteria are provided for establishing the required characteristic bond strength, reductions for adverse conditions, and associated job-site quality control requirements.

Keywords:

post-installed reinforcing bars; qualification procedures.

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]]> <![CDATA[ACI SPEC-548.14: Repairing Concrete with Epoxy Mortar]]> https://forum.civilea.com/showthread.php?tid=58543 Sat, 06 Dec 2025 13:17:25 +0200 poolmand]]> https://forum.civilea.com/showthread.php?tid=58543 ACI SPEC-548.14-25: Repairing Concrete with Epoxy Mortar (SI & IN-LB)

This Specification describes the work of repairing defects in hardened portland-cement concrete with an epoxy mortar. Included are controls for epoxy resin system labeling, storage, handling, surface evaluation and preparation, mixing and application, inspection, quality control, and testing..

Keywords:

adhesion to concrete; aggregate; concrete construction; epoxy; epoxy mortar; hardened concrete quality control; repairs; resurfacing.

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]]> <![CDATA[ACI PRC-357.3: Design and Construction of Waterfront and Coastal Concrete Marine Stru]]> https://forum.civilea.com/showthread.php?tid=58542 Sat, 06 Dec 2025 13:09:57 +0200 poolmand]]> https://forum.civilea.com/showthread.php?tid=58542 ACI PRC-357.3-25: Design and Construction of Waterfront and Coastal Concrete Marine Structures

Waterfront and coastal concrete marine structures are exposed to severe environmental conditions for which concrete is ideally suited. These conditions include wind; waves, including seiches and tsunamis; ice and ship impact; abrasion and impact from floating debris; passing vessel effects; and seismic events. As many of these structures are pile-supported, the seismic loading can be critical and, therefore, a discussion of piles and their installation is included in this guide. Also provided are the measures that can be taken to minimize the undesirable effects of these environmental factors and reduce the potential for serious problems.

This guide also defines waterfront and coastal concrete marine structures, discusses materials that can be used to construct them, describes potential durability issues and how to mitigate them, and presents sustainability and serviceability requirements. Design loads, analysis techniques, design methodology, and construction considerations are also presented. Other topics include quality control (QC), above-water and below-water inspection of these structures, and repair of damaged structures. The materials, processes, QC measures, and inspections described in this guide should be tested, monitored, or performed as applicable only by qualified individuals holding the appropriate ACI certifications or equivalent.

Keywords:

construction procedures; durability; inspection; marine structures; materials; quality control; serviceability; structural analysis; structural design; sustainability

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]]> <![CDATA[ACI PRC-325.13-25: Concrete Overlays for Pavement Rehabilitation]]> https://forum.civilea.com/showthread.php?tid=58541 Sat, 06 Dec 2025 13:03:26 +0200 poolmand]]> https://forum.civilea.com/showthread.php?tid=58541 ACI PRC-325.13-25: Concrete Overlays for Pavement Rehabilitation—Report

This report provides information on the use of both bonded and unbonded concrete overlay solutions for the rehabilitation of concrete and asphalt pavements. Information is provided on the characteristics of each overlay type along with important design and construction considerations. Critical considerations are provided for the selection of the appropriate overlay type to meet the needs and condition of the project.

Keywords:

bonded; concrete overlay; construction; design; performance; rehabilitation; unbonded.

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]]> <![CDATA[ACI 225.2: Type IL Cements and Specification]]> https://forum.civilea.com/showthread.php?tid=58540 Sat, 06 Dec 2025 12:56:32 +0200 poolmand]]> https://forum.civilea.com/showthread.php?tid=58540 ACI PRC-225.2-25: Type IL Cements and Specifications—TechNote

Author(s)/Editor(s): ACI Committee 225| Format: PDF| Quality: Scanner| Year: 2025| pages: 4

Type IL (pronounced “one-el”) portland-limestone cements were introduced in ASTM C595/C595M and AASHTO M 240 standard specifications for blended cements in 2012. These cements contain between 5 and 15% limestone, compared to the 5% maximum limestone content of ASTM C150/AASHTO M 85 portland cements. Type IL cements perform comparably to portland cements and do so with up to 10% lower CO2 emissions per ton of cement. Although portland-limestone cements have been available in other parts of the world, the availability and adoption of these cements in practice have only recently become widespread in the United States (as of 2022) (Schexnayder 2022). Many specifiers may have limited experience in incorporating these cements into project specifications.

Keywords:

heat of hydration; high early strength; low-carbon concrete; mixture design; portland-limestone cements; specifications; sulfate resistance.

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Author(s)/Editor(s): ACI Committee 225| Format: PDF| Quality: Scanner| Year: 2025| pages: 4

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]]> <![CDATA[ACI 548.17: Circular Precast Polymer-Concrete Manholes]]> https://forum.civilea.com/showthread.php?tid=58539 Sat, 06 Dec 2025 12:50:43 +0200 poolmand]]> https://forum.civilea.com/showthread.php?tid=58539 ACI 548.17-25: Circular Precast Polymer-Concrete Manholes

This Specification provides requirements for circular precast polymer-concrete manholes for use in sanitary and storm sewer systems. It includes ordering information, minimum physical and chemical requirements for the polymer concrete mixture, criteria for designing the manhole components, manufacturing and quality control requirements, and documentation to certify the adequacy of the design.

Keywords:

absorption; chemical resistance; compressive strength; dimensional tolerances; design loads; polymer concrete; precast manhole; structural design.

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]]> <![CDATA[ACI 130.1 : Environmental Product Declarations (EPDs) of Cement-Based Products: State]]> https://forum.civilea.com/showthread.php?tid=58515 Sun, 17 Aug 2025 13:32:19 +0300 poolmand]]> https://forum.civilea.com/showthread.php?tid=58515 ACI 130.1 : Environmental Product Declarations (EPDs) of Cement-Based Products: State of Practice and Path Forward

What are cement-based product Environmental Product Declarations (EPDs) and how are they used to support sustainability-related efforts?

Keywords:

Environmental Product Declarations (EPDs); life cycle assessment (LCA); sustainability.

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]]> <![CDATA[ACI PRC-440.14-25: Design of Circular Concrete-Filled Fiber-Reinforced Polymer Tubes]]> https://forum.civilea.com/showthread.php?tid=58514 Sun, 17 Aug 2025 13:25:16 +0300 poolmand]]> https://forum.civilea.com/showthread.php?tid=58514 ACI PRC-440.14-25: Design of Circular Concrete-Filled Fiber-Reinforced Polymer Tubes

The circular concrete-filled fiber-reinforced polymer (FRP) tube (CFFT) system is an alternative to traditional reinforced concrete structures. The pre-cured FRP tube, which comprises layers of engineered fibers oriented in different directions, provides a corrosion-resistant stay-in-place structural form to retain freshly cast concrete that speeds up construction while at the same time provides primary reinforcement in the two orthogonal directions instead of traditional longitudinal steel reinforcing bar, ties, and stirrups. Typical applications of CFFT include piles, columns, and poles used in building and bridge construction. The FRP tube provides confinement and environmental protection of the concrete core, increasing its strength, ductility, and durability, as well as protection of the minimum internal steel reinforcement. Due to the unique characteristics of CFFTs in which reinforcement in the orthogonal directions are integrated into one continuous membrane—namely, the tube—specific guidance on the design of members using this system is needed. This guide provides general information and background of CFFT technology, including applications and limitations, characteristics of circular FRP tubes, and the interface bond between tube and concrete. The guide provides provisions for design for flexure, axial load, shear, combined loading, connections, and a design approach aimed at mitigating the risk of accidental tube loss. This guide is based on the knowledge gained from experimental research, analytical work, and field applications of CFFTs.

Keywords:

bond; circular; concrete-filled fiber-reinforced polymer tube (CFFT); confinement; connections; fiber-reinforced polymer (FRP); stay-in-place form; tube.

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]]> <![CDATA[ACI 221 : Use of Normalweight and Heavyweight Aggregates in Concrete]]> https://forum.civilea.com/showthread.php?tid=58513 Sun, 17 Aug 2025 12:03:52 +0300 poolmand]]> https://forum.civilea.com/showthread.php?tid=58513 ACI PRC-221-25: Use of Normalweight and Heavyweight Aggregates in Concrete

This guide presents information on selection and use of normalweight and heavyweight aggregates in concrete. The selection and use of aggregates in concrete should be based on technical criteria as well as economic considerations and knowledge of types of aggregates generally available in the area of construction. The properties of aggregates and their processing and handling influence the properties of both fresh and hardened concrete. The effectiveness of processing, stockpiling, and aggregate quality control procedures will affect batch-to-batch and day-to-day variation in the properties of concrete. Aggregates that do not comply with the specification requirements may be suitable for use if the properties of the concrete using these aggregates are acceptable, as per Chapter 6. Materials that can be recycled or produced from waste products are potential sources of concrete aggregates; however, special evaluation may be necessary.

Keywords:

alkali-silica reaction (ASR); attached mortar; characterization; durability; field performance; fresh concrete; hardened concrete; heavyweight aggregate; normalweight aggregate; quality control; recycled aggregate; specific gravity.

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]]> <![CDATA[ACI 311.7 : Inspection of Concrete Construction]]> https://forum.civilea.com/showthread.php?tid=58511 Sun, 17 Aug 2025 11:09:03 +0300 poolmand]]> https://forum.civilea.com/showthread.php?tid=58511 ACI 311.7 -18: Inspection of Concrete Construction

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This reference specification covers quality assurance inspection services for preplacement, placement, and post-placement of concrete construction. This reference specification can be made applicable to a particular construction project by citing it in the inspection services contract. The specifier shall supplement the provisions of this reference specification as needed by specifying individual project requirements in the inspection services contract.

The materials, processes, quality control measures, and inspections described in this Specification should be tested, monitored, or performed as applicable only by individuals holding the appropriate ACI Certifications or equivalent.

Keywords:

accreditation; certification; concrete construction; inspection agency; placement; post-placement; preplacement; quality assurance; quality control; special inspections; specification.

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