Aci 213r-14 Pdf May 2026
ACI 213R-14: Guide for Structural Lightweight-Aggregate Concrete
is an essential technical resource for engineers and architects, providing comprehensive guidelines on the properties, design, and construction of lightweight concrete structures. Key Features & Content
This guide serves as a bridge between lab research and field application, offering data-driven insights into how lightweight aggregates (LWA) behave under structural loads.
The document ACI 213R-14, titled "Guide for Structural Lightweight-Aggregate Concrete," is an authoritative technical resource published by the American Concrete Institute (ACI). It serves as a comprehensive manual for the construction industry, detailing the standards, physical properties, and design considerations for structural lightweight concrete (SLC). Core Definitions and Technical Standards
According to ACI 213R-14, structural lightweight concrete is defined by specific density and strength criteria: aci 213r-14 pdf
Density Range: It must have an equilibrium density between 1120 and 1920 kg/m³ (approximately 70 to 120 lb/ft³). For comparison, normal-weight concrete typically ranges from 2240 to 2400 kg/m³.
Minimum Strength: A 28-day compressive cylinder strength of at least 17 MPa (2500 psi) is required to be classified as structural grade.
Aggregate Materials: The guide specifies the use of lightweight aggregates such as expanded shale, clay, or slate, which are often processed in rotary kilns to create a porous, low-density structure. Structural Advantages and Applications
The primary benefit of following the ACI 213R-14 guidelines is the significant reduction in dead load on a structure, which can lead to smaller foundation sizes and reduced reinforcement requirements. Key performance areas discussed in the guide include: effective water concept
ACI 213R-14 Guide For Structural Lightweight-Aggregate Concrete
The ACI 213R-14 is a guide published by the American Concrete Institute (ACI) titled "Guide for Structural Lightweight-Aggregate Concrete." It serves as a comprehensive technical summary of the technology, properties, and design practices for structural lightweight concrete. Key Technical Specifications
Structural lightweight concrete (SLC) as defined by ACI 213R-14 must meet specific performance criteria:
Minimum Compressive Strength: At least 17 MPa (2500 psi) at 28 days. and application-specific concerns.
Equilibrium Density: Ranges between 1120 and 1920 kg/m³ (70 to 120 lb/ft³).
Specified Density Concrete (SDC): A related category with a density range of 800 to 2240 kg/m³, though it does not carry a specific minimum strength requirement in this guide. Detailed Document Features
The guide is organized into chapters covering the lifecycle and behavior of lightweight concrete:
References (select)
- ACI 213R-14, Guide for Structural Lightweight-Aggregate Concrete, American Concrete Institute, 2014.
- ACI 318 — Building Code Requirements for Structural Concrete (for design provisions).
- Relevant ASTM standards for aggregate and concrete testing (e.g., ASTM C127, C128, C231, C495).
12. Updates in ACI 213R-14 (compared to prior editions)
- Notable clarifications: Improved guidance on moisture corrections, effective water concept, and quality-control procedures.
- Expanded topics: Additional practical recommendations for mixing, testing, and application-specific concerns.
The Core Technical Chapters of ACI 213R-14
To understand why you need this file, you must understand its anatomy. The guide is split into critical sections that define modern LWC use.
1. Definition and Classification (Chapter 2)
The document strictly defines what "lightweight" means. According to ACI 213, structural lightweight concrete has an equilibrium density between 90 and 120 pcf. It also distinguishes between:
- Sand-Lightweight: All fine aggregate is natural sand.
- All-Lightweight: Both coarse and fine aggregates are expanded materials.
- No-Fines: Often used for specific insulation applications.