1107 - AGGREGATES FOR BACKFILL
1100-24 (4) Deleterious substances.
Shale or shalelike material , maximum (KT-8) ............................................... 3.0% Clay Lumps and friable particle s, maximum (KT-7) ..................................... 3.0% Sticks (wet), maximum (KT-35) .................................................................... 1.0%
e.Crushed Stone.
1.Composition. Provide material produced by the crushing of any type of stone complying with the following.
2.Quality. Soundness, minimum (KTMR-21) ................................................................. 0.70 Wear, maximum (AASHTO T 96) ................................................................. 50%
3.Product Control.
a.Size Requirements. Provide uniformly graded cr ushed stone, from coarse to fine, for backfill that complies with TABLE 1107-8 : TABLE 1107-8: CRUSHED STONE BACKFILL Percent Retained-Square Mesh Sieves 2” 3/8” No. 16 0 20 - 50 50 - 100
b.Deleterious Substances. Clay lumps and friable particles, maximum (KT-7) ........................ 5.0% 1107.3 TEST METHODS Test aggregates according to the applicable provisions of SECTION 1115 . 1107.4 PREQUALIFICATION Prequalify aggregate sources according to subsection 1101.4 . 1107.5 BASIS OF ACCEPTANCE Aggregates covered by this subsection are accepted based on the procedures described in subsection 1101.5 . 1108 - AGGREGATES FOR COVER MATERIAL
1100-25 Section 1108
AGGREGATES FOR COVER MATERIAL 1108.1 DESCRIPTION This specification covers aggregates for cover material to be used for asphalt sealing of the type shown in the Contract Document s for each project. 1108.2 REQUIREMENTS
a.Composition. Provide sand-gravel, lightweight aggregate, crushed limestone, crushed sandstone, crushed or uncrushed gravel for cover material. Use expanded shale as lightweight aggregate.
b.Quality Requirements. Soundness, minimum (KTMR-21) ................................................................ 0.90 Wear, Maximum (AASHTO T 96) Sand-gravel, Gravel or Limestone ........................................................... 40% Sandstone ................................................................................................ 45% Lightweight aggr egate ............................................................................. 30% Absorption, maximum (KT-6, Procedure I) ................................................... 4.0% (All types except CM-L)
c.Product Control.
1.Size Requirements. Use various size cover material that comply with TABLE 1108-1 . Determine the gradation factor according to Part V, Section 5.10.5-Fineness Modulus of Aggregates (Gradation Factor). (2) Deleterious Substances. Do not exceed th e following deleterious substances by weight: Shale or Shale like mate rial (KT-8) ............................................................... 1.5% Clay lumps and friable pa rticles (KT-7) ......................................................... 1.5% Coal (AASHTO T-113) .................................................................................. 0.5% Sticks (wet) (KT-35) ...................................................................................... 0.1% Sum of all deleterious ...................................................................................... 2.0% TABLE 1108-1: GRADATION REQUIREMENTS FOR AGGREG ATES FOR COVER MATERIAL Type Composition Percent Retained-Square Mesh Sieves* Minimum Gradation Factor ¾” ½” 3/8” No. 4 No. 8 No. 50 No. 200 CM-A Sand-Gravel 0 0-20 30-100 85-100 98-100 CM-B Sand-Gravel 0 0-25 35-100 90-100 98-100 4.00 CM-C Crushed Stone 0 0-12 40-100 95-100 98-100 CM-D Crushed Sandstone 0 0-5 15-35 70-100 95-100 98-100 CM-G Sand-Gravel, or Crushed Sandstone 0 0-15 45-100 95-100 99-100 CM-H** Crushed Stone 0 0-5 40-100 90-100 98-100 CM-J** Sand-Gravel 0 1-20 30-100 90-100 96-100 CM-K Crushed Limestone 0 0-5 15-35 70-100 95-100 98-100 CM-L-1 Lightweight Aggregate 0 0 0-10 10-40 85-100 98-100 CM-L-2 Lightweight Aggregate 0 0-5 0-15 70-100 90-100 98-100 CM-L-3 Lightweight Aggregate 0-15 0-60 65-100 95-100 98-100 *After removal of all deleterious substances. **Do not specify Types CM-H and CM-J for Federal Aid projects. 1108 - AGGREGATES FOR COVER MATERIAL
1100-26 d. Stockpiling . Stockpile and handle aggregates in such a manner to prevent detrimental degradation and
segregation, the incorporation of appreciable amounts of foreign material, and the intermingling of stockpiled materials. 1108.3 TEST METHODS Test aggregates according to the applicable provisions of SECTION 1115 . 1108.4 PREQUALIFICATION Prequalify aggregate sources according to subsection 1101.4 . 1108.5 BASIS OF ACCEPTANCE Aggregates covered by this subsection are accepted based on the procedures described in subsection 1101.5.
Source: Kansas Standard Specifications for State Road and Bridge Construction, 2015 Edition. Pages 681–683 of 978.