823.02 General Requirements.
821.03 Specific Requirements.
General COMPOSITION Sieve Requirements Percentage Passing By Weight {Mass} TYPE A B C 2 inch {50 mm} 100 100 100 No. 8 {2.36 mm} 20-100 20-100 20-100 No. 10 {2.00 mm} 19-100 18-99 18-95 No. 40 {425 µm} 10-100 8-95 6-65 No. 200 {75 µm} 2-45 2-40 2-35 Clay 2-18 1-18 1-16 Liquid Limit (LL) 25 Max. 25 Max. 25 Max. Plasticity Index (PI) 6 Max. 6 Max. 6 Max. Material placed on the road found not meeting the above requirements may, in lieu of removal and replacement, be stabilized with approved materials in such proportions that the finished layer will meet the above specified requirements. DRAINAGE PLANE MATERIALS
822.01 General.
Drainage plane material shall, unless otherwise specified by plan details, be restricted to ALDOT Sizes 57, 67, 68 or 78 conforming to the requirements of Section 801 mo dified to require a minimum permeability of 50 mm/sec. as determined by the Constant Head Permeameter Test. Each material source will be pretested for permeability before shipments of material to the project are begun, and after approval no further permeability tests will be required provided there are no significant changes in the characteristics of the material noted; however, continuing gradation tests of the material will be made. SECTION 823 SOIL AGGREGATE MATERIALS
823.01 Description.
Soil Aggregate for the purpose of these Specifications is classified according to the several kinds and general characteristics set forth in this Section.
823.02 General Requirements.
a.General . The material shall meet the general requirements noted in this Article and the specific requirements noted in Article 823.03. Reference is made to Subarticle 820.02(a) for definitions of terms, coarse aggregate, binder, artificial mixture and blends.
b.Clay Gravel . See Subarticle 820.02(d).
c.Clay Gravel -Sand. Clay grave l-sand shall meet the general requirements provided in Subarticle 823.02(b) for clay gravel, except that it is an artificial mixture composed of clay gravel and sand.
d.Chert . See Subarticle 820.02(c).
Source: Alabama Standard Specifications for Highway Construction, 2022 Edition. Pages 734–733 of 934.