Aci 213r-14 Pdf [updated] Official

The is an indispensable resource for anyone involved in the design, specification, or construction of structural lightweight concrete. By consolidating decades of research and practical experience into a well-organized guide, it empowers professionals to harness the benefits of this versatile material safely and effectively. From establishing fundamental definitions and density requirements to providing detailed design adjustments for ACI 318, this document ensures that lightweight concrete structures are built to the highest standards of performance and durability.

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Defines structural lightweight concrete, typically having an air-dry density of less than 115 lb/ ft3f t cubed Performance: Reviews in-service performance.

Because lightweight aggregates are highly porous, they can absorb a substantial amount of water (often 5% to 25% by weight) during pre-wetting. When the cement paste hydrates and begins to dry internally (autogenous shrinkage), the pre-soaked aggregates release their moisture reservoir into the surrounding paste. Benefits of Internal Curing: aci 213r-14 pdf

Pumping lightweight concrete introduces unique challenges. The high pressure from concrete pumps forces water into the open pores of dry lightweight aggregates. This sudden loss of free water causes the slump to drop rapidly, resulting in line blockages.

A minimum 28-day compressive strength of 2,500 psi (17 MPa). Types of Lightweight Aggregates

Are you planning to utilize to reduce shrinkage? The is an indispensable resource for anyone involved

Handling structural lightweight concrete requires specialized field techniques to prevent segregation. ACI 213R-14 provides operational rules for:

Clays, shales, and slates expanded via intense heat.

ACI 213R-14, "Guide for Structural Lightweight-Aggregate Concrete," provides technical requirements for producing structural concrete with equilibrium densities between 1120 and 1920 kg/m³, ensuring strengths of at least 17 MPa (2500 psi). The guide highlights benefits such as reduced dead loads, superior thermal efficiency, and improved seismic performance through the use of expanded shale, clay, or slate aggregates. The full text can be accessed through the American Concrete Institute. If you are currently implementing this standard on

Pumping lightweight concrete without losing slump due to high pressure forcing water into the aggregate pores. Finishing techniques to avoid "floating" aggregate issues.

According to ACI 213R-14, structural lightweight concrete is defined by specific density and strength criteria: