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Table 5 Mix Design Guidance for Porous Asphalt Mixture

From: Review of porous asphalt pavements in cold regions: the state of practice and case study repository in design, construction, and maintenance

Sieve Size NAPA IS 115 (2002) [29] ASTM D7064/D7064M-08 [7] Oregon Department of Transportation (ODOT) [42] Pennsylvania Department of Transportation (PennDOT) [45] Minnesota Asphalt Pavement Association (MAPA) [36] APWA-WA-LAGSP S[5] UNHSC [59] Maine Mall Project (2010) [44]
3/8” 1/2″ 3/8″ Wear 3/8″ 1/2″
Aggregate Gradation Broadband Limits (Percent Passing by Weight)
3/4″ 19 mm 100 100 99–100 100 100 100 100 100
1/2” 12.5 mm 85–100 85–100 99–100 90–98 95–100 85–100 90–100 85–100 100 85–100
3/8” 9.5 mm 35–60
(55–75a)
35-60 90-100 70–100 55–75 55–90 55–75 85–100 55–75
No.4 4.75 mm 10–25 10–25 22–40 18–32 20–40 10–25 10–40 10–25 20–40 10–25
No. 8 2.36 mm 5–10 5–10 5–15 3–15 10–20 5–15 0–20
(No.40: 0–13)
5–12 5–10 5–10
No. 200 0.075 mm 2–4 2–4 1–5 1–5 0–4 2–4 0–5 2–4 2–4 2–4
Asphalt Binder Performance Grade Two grades stiffer than normal binder One or two grades stiffer (high PG) than normal binder Polymer modified asphalt binder for wearing course PG 70–22 or PG 76–22 PG 58–28 or PG 64–22 PG 70–22ER or higher grade PG64–28 SBR, PG 76–22, or
PG 76–28 SBS
PG 76–28 SBS
Binder Content (%) by Total Mix 6.0–6.5% 6.0–6.5% Per JMF (ODOT TM 318) 5.5–7.0% 5.5% Min. 6.0–7.0% 5.8–6.5% 6.0% Min.
Fiber Dosage (%) by Total Mix 0.3% Cellulose
0.4% Mineral
0.2–0.5% 0.2–0.4% Cellulose 0.2–0.4% Cellulose based on draindown test 0.25% 0.3% Cellulosec
0.4% Mineralc
Gyratory Level (Ndes) 50 50 3/8″ mix: 50 (1/2″ mix: non-SGC) 50 50 75 50
Air Voids (ASTM D3203 or ASTM D6857) ≥ 18% ≥ 18% 16–20%
(VFA: 30–50%)
16–20% (ASTM D6752)
18–22% (AASHTO T275 or T269)
≥ 16% 16–25% 16–22% 20%
Cantabro Abrasion Unaged ≤ 20% ≤ 20% ≤ 20%
Aged ≤ 30% ≤ 30% (Average)
≤ 50% (Any Individual)
≤ 30%
Draindown (ASTM D6390) ≤ 0.3% ≤ 0.3% 70–80% (ODOT TM 318) ≤ 0.3% ≤ 0.3% ≤ 0.3% ≤ 0.3% ≤ 0.3%
Moisture Susceptibility (AASHTO T283) TSR ≥ 80% (5 FT cyclesb) TSR ≥ 80% (5 FT cycles) TSR ≥ 80% (for surrogate dense-graded mix) Coating ≥90% (ASTM D3625) or surrogate dense graded mix Not Applicable Coating ≥95% (ASTM D3625) or surrogate dense graded mix TSR ≥ 80% (1 FT cycle), otherwise, use anti-strip additive
  1. a Indicated in the Appendix B of NAPA IS 115 [29]
  2. b Apply a vacuum of 87.8 kPa for 10 min to saturate the compacted specimens and conduct five freeze/thaw cycles
  3. cProperties of cellulose fiber and mineral fiber are specified in detail