Specifications Using Recycled Materials by Application

TxDOT has eliminated unnecessary requirements for virgin materials in its construction and maintenance specifications. Additionally, we have approved specifications that specifically call for or allow for the use of recycled materials. Some specifications require their use, while others allow their use if noted in the plans. Please note, this document is provided for information only and is not to be used for bidding or contract purposes.

Specifications using Recycled Materials can also be viewed by Materials. All use 2004 Standard Specifications unless noted. Please contact us if you have any questions.

Acronyms

RAP - Reclaimed Asphalt Pavement
SCM - Supplementary Cementing Material

Earthwork

SPECIFICATION	RECYCLED MATERIALS	APPLICATIONS
Embankment	Granular materials (such as crushed concrete, glass cullet, RAP)	Form a stable embankment
Compost	Leaves, yard trimmings, biosolids, food scraps, food-processing residuals, manure or other agricultural residuals, forest residues, bark, and paper	Establish vegetation, control erosion (See compost producer list and DMS-6360 Compost)
Seeding For Erosion Control	Cellulose	Mulch
Landscape Establishment	Loose organic materials such as wood chips or shredded bark	Mulch

Sub-base and Base Courses

SPECIFICATION	RECYCLED MATERIALS	APPLICATIONS
Flexible Base	Crushed concrete, RAP, or other (such as glass cullet)	Coarse aggregate
Lime Treatment (Road-Mixed)
Lime Treatment (Plant-Mixed)
Fly Ash Or Lime-Fly Ash Treatment (Road-Mixed)
	Fly ash	Subgrade or base stabilizer
Cement Treatment (Road-Mixed)	Crushed concrete, RAP, or other (such as glass cullet)	Coarse aggregate
Cement Treatment (Plant-Mixed)
Asphalt Treatment (Plant-Mixed)

Surface Courses or Pavement

SPECIFICATION	RECYCLED MATERIALS	APPLICATIONS
Asphalts, Oils and Emulsions	Tire rubber	Asphalt modifier for pavements
Asphalts, Oils and Emulsions	Tire rubber	Asphalt modifier for crack sealer (see material producer list)
Aggregates For Surface Treatments	Crushed slag, glass cullet	Coarse aggregate
Surface Treatments	Tire rubber	Asphalt modifier
Hot Asphalt-Rubber Surface Treatments	Tire rubber	Asphalt modifier
Hot-Mix Cold-Laid Asphalt Concrete Pavement	Fly ash	Mineral filler
Dense-Graded Hot-Mix Asphalt (Method)	Fly ash	Mineral filler
Dense-Graded Hot-Mix Asphalt (Method)	RAP	Coarse aggregate
Dense-Graded Hot-Mix Asphalt (QC/QA)	Fly ash	Mineral filler
Dense-Graded Hot-Mix Asphalt (QC/QA)	RAP	Coarse aggregate
Permeable Friction Course (PFC)	Cellulose or mineral fiber	Fiber additive
Permeable Friction Course (PFC)	Tire rubber	Asphalt modifier
Performance-Designed Mixtures	Fly ash	Mineral filler
RAP	coarse aggregate
Stone-Matrix Asphalt	Cellulose or mineral fiber	Fiber additive
	Fly ash	Mineral filler
	Manufactured sand	Fine aggregate
	RAP	Coarse aggregate
	Tire rubber	Asphalt modifier
Asphalt Concrete Surface Rehabilitation	Asphalt pavement, in place	Pavement
Concrete Pavement	Same as Hydraulic Cement Concrete for nonstructural concrete	Aggregates and SCMs
Full-Depth Repair of Concrete Pavement	Same as Hydraulic Cement Concrete for nonstructural concrete	Aggregates and SCMs
Concrete Pavement Terminals	Same as Hydraulic Cement Concrete for nonstructural concrete	Aggregates and SCMs

Structures

SPECIFICATION	RECYCLED MATERIALS	APPLICATIONS
Excavation and Backfill for Structures	Same as Hydraulic Cement Concrete for nonstructural concrete, glass cullet, foundry sand	Aggregates and SCMs
Flowable Backfill	Fly ash	Mineral fiber
Flowable Backfill	Foundry sand	Fine aggregate
Hydraulic Cement Concrete	Crushed blast furnace slag, crushed concrete (in nonstructural concrete only)	Coarse aggregate
	Fly ash, ground granulated blast-furnace slag, silica fume	SCMs
	Manufactured sands	Fine aggregate
Retaining Walls	Glass cullet	Aggregate
Riprap	Aggregates and SCMs
Reinforcing Steel	Steel	Reinforcement
Steel Structures	Steel	Structures
Metal for Structures	Steel, iron, aluminum	structural members, castings, extrusions, forgings
Manholes and Inlets	Aggregates and SCMs
Manholes and Inlets	Steel, iron, aluminum	Structural members, castings

Incidental Construction

SPECIFICATION	RECYCLED MATERIALS	APPLICATIONS
Colored Textured Concrete and Landscape Pavers	Nonstructural concrete	Aggregates and SCMs
Concrete Curb, Gutter, and Combined Curb and Gutter	Aggregates and SCMs
Intersections, Driveways, and Turnouts	Same as Flexible Base
Intersections, Driveways, and Turnouts	Same as Hydraulic Cement Concrete for nonstructural concrete	Aggregates and SCMs
Sidewalks	Same as Hydraulic Cement Concrete for nonstructural concrete	Aggregates and SCMs
Concrete Medians and Directional Islands	Same as Hydraulic Cement Concrete for nonstructural concrete	Aggregates and SCMs
Right of Way Markers	Same as Hydraulic Cement Concrete for nonstructural concrete	Aggregates and SCMs
Metal Beam Guard Fence	Plastic, tire rubber	Blocks
Metal Beam Guard Fence	Same as Hydraulic Cement Concrete for nonstructural concrete	Aggregates and SCMs
Chain Link Fence	Same as Hydraulic Cement Concrete for nonstructural concrete	Aggregates and SCMs

Lighting and Signing

SPECIFICATION	RECYCLED MATERIALS	APPLICATIONS
Small Roadside Sign Supports and Assemblies	Same as Hydraulic Cement Concrete for nonstructural concrete	Aggregates and SCMs
Aluminum signs	Aluminum	Sign blanks
Foundations for Traffic Control Devices	Same as Hydraulic Cement Concrete for nonstructural concrete	Aggregates and SCMs
Maintenance of Traffic Signals	Aluminum	Sign blanks

Maintenance

SPECIFICATION	RECYCLED MATERIALS	APPLICATIONS
Landscape Maintenance	Loose organic materials such as wood chips or shredded bark	Mulch
Guard Fence Repair	Plastic, tire rubber	Blocks

Departmental Material Specifications

SPECIFICATION	RECYCLED MATERIALS	APPLICATIONS
Jiggle Bar Tile	Tire rubber	Filler for jiggle bar tile (see material producer list)
Flexible Delineator and Object Marker Posts (Drivable and Surface-Mount Types)	Plastic	Posts (see material producer list)
	Tire rubber	Posts (see material producer list)
Fiberglass Reinforced Plastic Sign Supports	Plastic	Sign supports
Fly Ash for Soil Treatment	Fly ash	Soil treatment
Ground Granulated Blast-Furnace Slag	Ground granulated blast-furnace slag	Supplementary cementing material (see material producer list)
Composite Material Posts and Blocks for Metal Beam Guard Fence	Plastic, tire rubber	Blocks (see material producer list)
Joint Sealants and Fillers	Tire rubber	Joint sealants
Hot Applied Thermoplastic	Glass	Reflectivity
Glass Traffic Beads	Glass	Reflectivity
Fly Ash	Fly ash	Pozzolan, soil treatment or stabilizer, SCM
Guidelines for Evaluating and Using Nonhazardous Recyclable Materials (NRMs) in TxDOT Projects	All non-hazardous recyclable materials	Environmental standards for NRMs used for any application

1993 and 1995 Standard Specifications

SPECIFICATIONS	RECYCLED MATERIALS	APPLICATIONS
1993 Special Specification 3157. Cold Processed - Recycled Paving Material for Use as Aggregate Base Course - Statewide Use	Crushed concrete or other non-hazardous recycled materials, processed recycled asphalt pavements, bottom ash, foundry slag, glass, recycled crumb rubber	Coarse aggregate
	Fly ash, bottom ash	Pozzolans to improve mixing and workability
1995 Special Specification 3028. Hot Mix Asphaltic Concrete Pavement Containing Reclaimed Roofing Shingles - For project 0162-04-039 in Navarro County. One-Time Use	Roofing shingles	Aggregate
1995 Special Specification 5160. Tire for Use in Embankment - For project 2552-01-025 in El Paso County. One-Time Use	Tire chips or shreds	Fill material