Grading and moisture content ASTM C 136/AASHTO T 27 Use the moisture content in of aggregates and conjunction with the ASTM C 566/AASHTO T 255 absorption of the aggregate to calculate w/cm ratio Combined grading Coarseness/workability factors Project variability may analysis 0.45 power affect workability and w/cm “8-18” chart* ratio Compressive or flexural ASTM C 39/AASHTO T 22 Cast as many specimens as Strength development strength and/or possible from a single ASTM C 78/AASHTO T 97 batch-break 3 @ 3 days, 3 @ 7 days, and 12 @ 28 days. Maturity curve ASTM C 1074 or May also be developed in Agency special provisions the field during the field trial stage Air content ASTM C 231/AASHTO T 152 Target the middle of the Air content specification range – laboratory batches with air contents on the low end of specification tolerances will provide higher strengths. Air-void analyzer and/or ASTM C 457 Spacing factor and specific image analysis surface area are both critical for freeze/thaw durability Density Density ASTM C 138/AASHTO T 121 Indicates (1) volumetric quantity (yield) of concrete produced per batch, (2) air content of concrete mixture, (3) uniformity Permeability Rapid chloride penetration ASTM C 1202/AASHTO T 277 Results are interpreted in ranges that are broadly related to permeability * See 0.45 power chart, Figure 3-31. www.aashtotig.org/(click on FocusTechnologies.AVA) ** Table 3-23. Suggested field trial batch testing plan (). CRD-C 55, Test Method for Within-Batch Uniformity of Freshly U.S. Army Corps of Engineers. Mixed Concrete. References Advanced Asphalt Technologies, LLC (AAT). 2011. A Manual for Design of Hot Mix Asphalt NCHRP Report 673. Transportation Research Board, Washington, DC. with Commentary. Available online at: .
Grading and moisture content of aggregates ASTM C 136/AASHTO T 27 and ASTM C 566/AASHTO T 255 Use the moisture content in conjunction with the absorption of the aggregate to calculate w/cm ratio Combined grading Coarseness/workability factors “8-18” analysis 0.45 power chart* Project variability may affect workability and w/cm ratio Strength development Compressive or flexural strength ASTM C 39/AASHTO T 22 and/or ASTM C 78/AASHTO T 97 Cast as many specimens as possible from a single batch-break 3 @ 3 days, 3 @ 7 days, and 12 @ 28 days. Maturity curve ASTM C 1074 or Agency special provisions May also be developed in the field during the field trial stage Air content Air content ASTM C 231/AASHTO T 152 Target the middle of the specification range – laboratory batches with air contents on the low end of specification tolerances will provide higher strengths. Air-void analyzer and/or image analysis ASTM C 457 Spacing factor and specific surface area are both critical for freeze/thaw durability Density Density ASTM C 138/AASHTO T 121 Indicates (1) volumetric quantity (yield) of concrete produced per batch, (2) air content of concrete mixture, (3) uniformity Permeability Rapid chloride penetration ASTM C 1202/AASHTO T 277 Results are interpreted in ranges that are broadly related to permeability * ** See 0.45 power chart, Figure 3-31. www.aashtotig.org/(click on FocusTechnologies.AVA) Table 3-23. Suggested field trial batch testing plan (). CRD-C 55, Test Method for Within-Batch Uniformity of Freshly Mixed Concrete. U.S. Army Corps of Engineers. References Advanced Asphalt Technologies, LLC (AAT). 2011. A Manual for Design of Hot Mix Asphalt with Commentary. NCHRP Report 673. Transportation Research Board, Washington, DC. Available online at: .