Aci 213r-14 Pdf Jun 2026

Pelleted raw materials fly ash or slag are heated to fuse the particles into lightweight clinkers. Critical Physical Characteristics

Techniques for pumping or placing lightweight concrete.

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The guide explains the modification factor (

A list of and their specific properties? Pelleted raw materials fly ash or slag are

: Typically uses expanded shale, clay, or slate (ESCS) that has been fired in a rotary kiln to create a porous, low-density structure. Chapter Breakdown

| Property | Typical Criteria for Structural Use | | :--- | :--- | | | 1440 to 1850 kg/m³ (90 to 115 lb/ft³) | | 28-Day Compressive Strength | Minimum 17.0 MPa (2500 psi); Common range 21 to 35 MPa (3000 to 5000 psi) | | Unit Weight | Less than 2000 kg/m³ for many structural applications | | Tensile Strength | Varies, but typically lower than normal-weight concrete of equivalent compressive strength | | Modulus of Elasticity | Lower than normal-weight concrete; dependent on density and strength | | Shrinkage | Often similar to or lower than normal-weight concrete | | Fire Resistance | Superior to normal-weight concrete due to lower thermal conductivity | The guide explains the modification factor ( A

Due to the lower modulus of elasticity, structural members made with LWAC will experience higher immediate deflections. Long-term creep and shrinkage can also be more pronounced. Engineers must carefully evaluate long-term serviceability requirements for long-span beams and thin floor slabs. 4. Proportioning, Mixing, and Placing