3136.1SCOPE
This Specification lists the quality requirements for drainable bases types: Open Graded Aggregate Base (OGAB) and Drainable Stable Base (DSB) used for 2212, “Drainable Aggregate Base.”
3136.2REQUIREMENTS
A Aggregate Composition Use virgin Aggregates comprised of sound naturally occurring minerals that have uniform: appearance, texture, moisture content, and performance characteristics.
B Quality and Gradation Requirements Meet the requirements of Table 3136.2-1. Table 3136.2-1 Drainable Base Requirements Total Percent Passing Requirement Type OGAB DSB 1 1/2 inch Sieve 100 100 1 inch Sieve 95 - 100 - 3/4 inch Sieve 65 - 95 75 – 100 3/8 inch Sieve 30 - 65 45 – 75 No. 4 Sieve 10 - 35 30 – 60 No. 10 Sieve 3 - 20 10 – 35 No. 40 Sieve 0 - 8 5 – 20 No. 200 Sieve 0 - 3.5 0 - 5.0, for class B or C 0 - 6.5, for class A Class per Specification 3137, “Coarse Aggregate for Concrete” Quality Requirements OGAB DSB D60/D10* ≥ 4.0 ≥ 8.0 (+4) Minimum Crushing (2 face) ǁ 85 percent 60 percent Maximum Los Angeles Rattler Loss (LAR) 40 percent 40 percent Maximum Acid Insoluble Residue (IR) Minus No. 200 Sieve † 10 percent 10 percent Maximum Spall – Total Sample 5.0 percent 5.0 percent * D60 is the diameter of the Aggregate particle of which 60 percent is smaller, by weight. D10 is the diameter of the Aggregate particle of which 10 percent is smaller, by weight. ǁ Material crushed from quarries is considered crushed Material. † For drainable base composed of crushed Carbonate quarry rock.
3136.3SAMPLING AND TESTING
Test in accordance with the following procedures: A Sampling.............................................................................................. Grading and Base Manual B Sieve Analysis ............................................................. Laboratory Manual Methods 1202 & 1203 C Crushing ................................................................................... Laboratory Manual Method 1214 D Los Angeles Rattler Loss ........................................................... Laboratory Manual Method 1210 E Insoluble Residue ..................................................................... Laboratory Manual Method 1221 F Spall ......................................................................................... Laboratory Manual Method 1209
Get an email when 3136 changes
Minnesota revises spec sections through supplementals and new editions. We check this one every week and email you the day it changes. Free, no account.