Recycled Concrete Aggregate Specifications

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9112.7 Recycled Concrete Aggregate RCA Composition: RCA shall consist of concrete material derived from the crushing of hard portland cement concrete. In addition to the deleterious materials noted in 9112.2, RCA shall be asbestos free. The following limits shall not be exceeded: 1003

Recycled Aggregates Portland Cement Association

Description Coarse recycled concrete aggregate RCA is produced by crushing sound, clean demolition waste of at least 95 by weight of concrete, and having a total contaminant level typically lower than 1 of the bulk mass. Other materials that may be present in RCA are gravel, crushed stone, hydrauliccement concrete or a combination thereof deemed suitable for premix concrete production.

Sustainable LongLife Composite Concrete Pavement for the

Aug 03, 2018 Illinois program will make use of existing concrete pavements as another recycled aggregate source for reconstructed and widen corridors. A large portion of the ed reconstructed future median miles consist of a 4inch hotmix asphalt overlay of 10 inch jointed reinforced concrete pavement over 10 inches of aggregate subbase.

Performance of Recycled Concrete Aggregates: A New

Apr 15, 2021 Performance of Recycled Concrete Aggregates: A New Study. Posted on April 15, 2021. It is a basic axiom of environmental stewardship. When possible, use old stuff to make new stuff. The same is true with concrete aggregates. Mixes are more sustainable when recycled concrete aggregate RCA replaces natural aggregates, at least to a degree.

Use of Crushed/Recycled Concrete as Drainable

the recycled concrete. And shall identify location from where concrete will be removed recycled concrete shall be placed in max 4in lifts and each lift shall be compacted by a min of 3 passes w/ 10ton roller 304.3.5 New Jersey Used as Densegraded aggregate conforms with gradation and plasticity requirements 901.08

Aggregates for Concrete as per American Standards ASTM

Coarse Aggregate. The coarse aggregate shall consist of gravel, crushed gravel, crushed stone, aircooled blast furnace slag, or crushed hydrauliccement concrete or a combination thereof, conforming to the specification as given below, 1. Grading. The coarse aggregates shall conform to

Recycled Materials Specifications

Specification 901: Coarse Aggregate Reclaimed Portland Cement Concrete. Specification 911: Base Reclaimed Portland Cement Concrete, reclaimed general crushed concrete. Recycled Plastic . Note: All recycled plastic products are governed by Specification 972. Other sections may also apply. Specification 9724.1: Fence Posts Specification 972

Recycled Concrete Aggregate in Portland Cement Concrete

of crushed hydraulic cement concrete as a source of aggregate in new Portland cement concrete. The two likely sources of recycled concrete aggregates RCA are Class B recycling facilities currently taking in waste concrete and crushing it for use as roadway aggregate base and concrete precasting facilities that have an interest in crushing and

Using Recycled Concrete in MDOTs Transportation

standard specifications for construction and and special provisions to indicate the Departments current usage policies policies and recommendations regarding CCA. crushed concrete aggregate CCA, recycled concrete aggre Unclassified Unclassified 44

Frequently Asked Questions FDOT

The current FDOT specifications allow for crushed concrete from an existing concrete pavement to be recycled into a new pavement as base or aggregate material. Specifications also allow for the use of crushed concrete from general construction and demolition waste if the source was previously approved by the FDOT the source shall have a DEP

Section 815 Graded Aggregate Georgia Department of

Section 815Graded Aggregate 815.1 General Description This section includes the requirements for material to be used for base, subbase, or shoulder course material, and includes graded aggregate, unconsolidated limerock base, and crushed concrete base. 815.1.01 Related References A. Standard Specifications Section 800Coarse Aggregate

Dolese Recycled Concrete

Recycled concrete is a viable product for use as a base material to build roads, driveways or building pads. We recycle concrete at two of our locations, including the OKC Block Plant located at SE 74th and Sunnylane Road and our Seward Road Concrete Plant located a quarter of a mile east of I35 on the south side of Seward Road.

recycled aggregates Concrete Products

Aug 05, 2019 Sources: American Concrete Institute, Farmington Hills, Mich. CP staff The American Concrete Institute has expanded the scope of ACI 30120, Specifications for Concrete Construction, to include internal curing, mineral fillers and recycled aggregates, along with evaluation requirements for elements cast with selfconsolidating mixes and structures with defined modulus of elasticity

Development Of Guide Specifications For Recycled

Keywords: Concrete, guidelines, recycled aggregate, specifications. 1 INTRODUCTION The development a national Guide specification document on recycled concrete and masonry aims at providing engineers with product specification information and the tools required for conventional design with graded recycled construction and

2014 Specifications Using Recycled Materials by Application

Specifications: Recycled Materials: Applications: PDF: Colored Textured Concrete and Landscape Pavers: Nonstructural concrete: Aggregates and SCMs: Concrete Curb,

Specifications for concrete with recycled aggregates

10 Specifications for concrete with recycled aggregates. Materials and Structures. volume. 27, pages. 557559 1994 Cite this article. 504 Accesses. 152 Citations. Metrics.

Specifying recycled concrete aggregate Construction Canada

Apr 01, 2012 The Ontario Provincial Standard Specifications OPSS preclude the use of recycled concrete as an aggregate in concrete works. Additionally, OPSS 1001, Material Specification for AggregatesGranular A, B, M, and Select Subgrade Material, does not allow the blending of aggregate products to improve physical properties.


Recycled concrete aggregate or reclaimed asphalt pavement, at a maximum rate of 30, by weight, may be used for Type B aggregate, provided the combined aggregate blend meets all the requirements specified below. The recycled concrete and asphalt shall be crushed and screened to produce a uniform stockpile before being

Using Recycled Concrete Aggregate Specify Concrete

Feb 28, 2019 Construction aggregate includes a range of particulate materials ranging from coarse to medium grains including sand, gravel, slag, crushed stones, and recycled concrete. These materials are mixed in with concrete to give the end product a strong

Recycled Aggregates from Inert Waste

Annex 2 details the main standards and specifications relating to aggregates. The majority of recycled aggregate in Scotland is either capping material e.g. 6F4 and 6F5 or subbase e.g. Type 1. Some production sites can produce aggregates for concrete, such

Aggregates Specifications Ontario Sand, Stone Gravel

Aggregates may be produced by processing sand and gravel or by blasting and crushing bedrock materials or select byproduct materials, including recycled/reclaimed materials, such as concrete, asphalt, blast furnace slag, glass and ceramics, etc. Crushed stone and processed sand and gravel are interchangeable for many applications, but not all.


Recycled Concrete Aggregate Fact Sheet Background and Origin create guidelines/Specifications for the use of RCA in various applications. According to the U.S. EPA, in 2016 and 2017 over 560 million tons of construction and demolition CD wastes were generated in the U.S. Specifically, concrete is the largest waste stream generated

Edil No. 68 Specifications for Recycled Materials Used as

This report provides recommendations and specifications for recycled asphalt pavement and recycled concrete aggregate that can be used as unbound base course. It is based on research conducted at the University of WisconsinMadison and elsewhere and the discussions with the industry representatives and other professionals.

Guidance for Specification: Recycled and secondary aggregates

Recommendation: Permit the use of recycled or secondary aggregates but do not overspecify.. When specifying recycled and secondary aggregates, the factors to balance are resource depletion, transportation CO 2 impacts and implications on mix design. These are all affected by availability, and concrete producers are well placed to ensure the most sustainable aggregates for each project are

Recycled concrete aggregates ScienceDirect

The present paper refers to the concrete recycling subject and, more specifically, to a proposal for Greek specifications of recycled concrete aggregates RCA with reference to international experience and practice. The existence of Greek specifications of RCAthe European ones will come much laterwill help Olympic Games 2004 to be

Recycled Concrete Aggregate an overview ScienceDirect

19.2.1 Recycled concrete aggregate RCA Coarse RCA complies to the requirements of maximum 5 masonry content, 5 fine materials, 0.5 lightweight material, 5 asphalt, 1 foreign material and 1 acid soluble sulfate, and is suitable for use in concrete as per BS 85002 2006. In designated concrete RC20/25 to RC40/50, RCA can automatically

The Use of Recycled Concrete Aggregate in a Dense Graded

the permeability of recycled concrete aggregate RCA, while attempting to maintain its structural integrity i.e. California Bearing Ratio, CBR. Before laboratory testing began, a survey was developed, sent to various state agencies, and tabulated to determine if other state agencies currently utilized RCA, and if so, what experience did


Aggregates, including recycled aggregates, for concrete masonry units are required to meet ASTM C33, Standard Specification for Concrete Aggregates, or C331, Standard Specification for Lightweight Aggregates for Concrete Masonry Units refs. 19, 20, except that grading requirements do not have to be met.

Transportation Applications Of Recycled Concrete Aggregate

and have deemed it inert. After all it really is just broken up concrete pavement being reused as aggregate base or PCC aggregate. Economic Limit haul distance: Recycled concrete is crushed and the entire aggregate product can be used as a base material according to specifications, therefore generating no waste. This

Optimising concrete with recycled sand, aggregates Quarry

Aug 12, 2020 Such is the quality of the recycled sand and aggregates it extracts from CD waste, its 100 per cent recycled sand is BSIapproved for structural concrete. Current concrete strength specifications allow for recycled aggregates to be used in the appropriate proportions to produce the required strength.

Use of Recycled Concrete Materials in Base/Subbase

Dec 02, 2017 Recycling Details Recycling chosen over 3hour roundtrip haul for aggregate. 200,000 gals of fuel saved in hauling aggregate and demolished concrete Crushing plant set up in interchange cloverleaf. No crushing from midnight

Environmental Considerations in Concrete Recycling

Mar 29, 2017 Concrete Recycling Breaking, removing and crushing hardened concrete from an acceptable source. Old concrete pavements often are excellent sources of material for producing recycled concrete aggregate RCA. This webinar focuses primarily on RCA from existing pavements not mixed CD waste. 6

Aggregates for Concrete

Chapter 7Recycled aggregates, p. E123 7.1Introduction to recycled aggregates in concrete, aggregate properties affecting performance of the concrete, tests used to measure aggregate properties, and concrete. A typical consensus specification for fine and coarse aggregate for concrete is ASTM C 33.

2019 Recycled Concrete Usage in Aggregate Materials

Dec 19, 2019 recycled concrete aggregate RCA. Standard Specifications for Road, Bridge and Municipal Construction. Table 1. is provided below listing the potential applications of recycled concrete materials, as highlighted in yellow. Table 1 Maximum Allowable Percent of Recycled Material.

Evaluation of Recycled Concrete for Use as Aggregate in

This study evaluated the use of recycled concrete as coarse aggregate in new concrete pavements. Recycled concrete aggregate RCA produced from demolished pavements in three geographicallydispersed locations in Washington state were used to perform testson aggregate characte ristics, fresh concrete propertiesand hardened concrete properties.

2018 Annual Report Recycled Concrete Usage in

RECYCLED CONCRETE USAGE IN AGGREGATE MATERIALS 3 Maximum Allowable Percent by weight of Recycled Material Hot Mix Asphalt Recycled Concrete Aggregate Recycled Glass glass cullet Steel Slag Select Borrow greater than 3 feet below Subgrade and side slopes 903.142 100 100 20 20 Common Borrow 903.143 25 100 20 20 Common Borrow


Nov 27, 2007 RECYCLED CONCRETE AGGREGATE NYSDOT Specs PT999 Structural OP 26 Nov 07 16:46. I want to use recycled concrete aggregrate as a base under under hot mix asphalt for a small road project I am using NYSDOT Standard Specifications 2006 ed for all the items. But I dont see this item in the spec book. I am guessing it is one of the subbase

5 Aggregate Specifications and Requirements

5 Aggregate Specifications and Requirements Physical Quality Requirements Fine Aggregates hot mix asphalt and portland cement concrete. The intent is to avoid using There is a specific requirement for gravel coarse aggregates regarding crushed particles.

Specifications of concrete with recycled aggregates

This standard considers the use of recycled concrete aggregates RA but in quite different ways in the various national provisions see chapter 34. Nevertheless, there is a common way that is comprised of two aspects, the quality of the aggregates and the type of concrete.