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ACI References on Use of Fly Ash

Below is a summary of the most widely used ACI standards and the reference(s) to fly ash contained in each. For more information on these documents, please visit the ACI bookstore.

ACI Number

ACI Reference Name

References to Fly Ash

ACI 201.2 Guide to Durable Concrete

2.2.3 Pozzolans for sulfate attack
4.4.4 Pozzolans for permeability
5.2.5 Pozzolans for ASR

ACI 211.1-91 Standard Practice for Selecting Proportions for Normal, Heavy Weight and Mass Concrete 4.4.1 Class F = 15-25% general range of ash content
A5.3.1.3 (TableA5.1) Mass concrete = Class F Fly Ash at 25% by volume typical
ACI 211.3R-97 Guide for Selecting Proportions for Non-Slump Concrete 20-25% Class C for concrete roof tile
15-20% by weight of cement for concrete masonry
ACI 211.4R-93 Guide for Selecting Proportions for High Strength Concrete with Portland Cement and Fly Ash 4.3.7 (Table 4.3.6) Class F Fly Ash at 15-20% by weight.
Class C Fly Ash at 20-35% by weight
ACI 301-99 Standard Specifications for Structural Concrete 4.2.1.1.c 15% minimum
ACI 302.1R-96 Guide for Concrete Floor and Slab Construction 5.5.6 up to 20% substitution for portand cement by mass of cementitious materials
ACI 318R-99 Building Code Requirements for Structural Concrete 4.2.3 for concrete exposed to deicing chemicals, 25% maximum by weight
ACI 232.2R-03 Use of Fly Ash in Concrete 4.1 15-35% by mass (larger proportions for mass concrete etc.)
ACI 232.2R-03 Use of Fly Ash in Concrete 3.2.12 Sulfate resistance order
1. Type V + Fly Ash
2. Type II + Fly Ash
3. Type V
4. Type II
5. Type I + Fly Ash

 

 

 

 

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