City Mix

$30.00$330.00

CityMix is a patented
lightweight concrete additive
consisting of individual
expanded polystyrene (EPS)
waste particles encapsulated
in an applied coating. The
product is static free, mixes
easily and uniformly, and
bonds extraordinarily well to
cement paste. CityMix by
weight consists of
approximately 50% EPSbased

inner core and 50%
proprietary, non-toxic outer
shell. By volume, CityMix
consists of 99% recycled
EPS particles with 1% outer
coating.

Clear

Description

CityMix is a patented
lightweight concrete additive
consisting of individual
expanded polystyrene (EPS)
waste particles encapsulated
in an applied coating. The
product is static free, mixes
easily and uniformly, and
bonds extraordinarily well to
cement paste. CityMix by
weight consists of
approximately 50% EPSbased

inner core and 50%
proprietary, non-toxic outer
shell. By volume, CityMix
consists of 99% recycled
EPS particles with 1% outer
coating.

CityMix
 Ultra-Lightweight Additive (Appx 2.5 – 3.0 lb/ft)
 Non-Static Handling
 Mixes Easily & Uniformly
 Non-Combustible (ASTM E84 Class A Flame and Smoke Rating)
 Contains 99% Recycled Content (By Volume)
 Helps Reduce Transportation, Handling and Installation Costs
 Enables Lighter Structure Weight
CityMix, Inc
2031 Fairview Ave. East, Unit H
Seattle, WA 98102 www.citymix.com Version: 3.3 March 2015
3
 Cementitious Mixtures Can Be Designed to Specific Unit Weight
 Improved Freeze-Thaw Resistance
 Increased Flexibility
 Tailored Compressive Strength
 Improved Crack Resistance
 Improved Thermal Resistance
 Decreased Permeability
Mix Designing: CityMix is designed to serve as an ultra-lightweight VOLUME SUBSTITUTION
MATERIAL for equal parts by volume of natural aggregates and SHOULD ONLY BE MEASURED BY
VOLUME, never by weight. Even minor particle size and density variations can have a significant effect
upon CityMix weight or bulk density. Measuring or adding the product into a batch mix by WEIGHT is
never advised. To begin the mix designing process, the effective volume of CityMix should be regarded
as approximately 50% of the bulk volume, which is similar to natural aggregates, such as sand. Test
mixing should always be performed to verify or adjust the effective volume factor of CityMix. Minor
variations can be expected due to each individual manufacturer’s mixer, materials and/or process.
Sustainability: CityMix helps recycle the largest volume consumer waste product in the North
American landfill into a lightweight, user-friendly and performance-enhancing additive for use in
concrete, the world’s most common building material. Traditional concrete products are typically made
with heavy and rurally mined natural aggregates requiring energy-demanding processing, handling and
transporting equipment and procedures. Conversely, the use of recycled, ultra-lightweight CityMixcontaining

concrete provides significant potential for net carbon reduction. LEED documentation
support and other product sustainability information is available from your CityMix representative.
Packaging: CityMix is volume packaged into flexible tote bags.
Packaged volume remains consistent, although content weight may
vary due to post-manufacturing-moisture evaporation or other
atmospheric conditions. Other volume packaging options may be
available upon request. Packaged product shelf-life is one year from
date of manufacture.
Storage: CityMix should be stored in a cool, dry space and away
from open flame and heat sources.
Preparation: CityMix particle size separation and settlement
may have occurred during shipment, so care should be taken to gently
tumble or otherwise agitate contents to ensure uniform distribution of
large and small particles.
Temperature: CityMix is largely made up of recycled expanded
polystyrene, which is affected by temperatures above 180°F both
before and after the mixing/batching process. Consult with your
CityMix representative for exposure information above 180 F.
Safe Handling: CityMix contains respirable dust. As with all
dust generating material, adequate dust mask and eyewear should
always be worn when handling this product. Care should also be taken
to inhibit wind or fans from dispersing particles. Good housekeeping
should be observed to maintain clean work surfaces. Product can be
swept or picked up and placed into a suitable container for disposal.
Spills may present a slipping hazard and may present a risk of
explosion or fire if exposed to high temperatures and/or sources of
ignition.
Bulk Density Variation: The CityMix manufacturing
process leaves trace amounts of surface moisture on the finished
particles, so bulk density will vary with the degree of moisture
evaporation. In dry or windy environments the moisture will evaporate
more quickly compared to more humid environments. The total weight
of material in each tote can vary by as much as 30% in extreme cases.
For this reason, CITYMIX MUST ONLY BE MEASURED AND ADDED
BY VOLUME, never by weight.
Specific Gravity: The mix designing process using CityMix is
strictly based on volume replacement of natural aggregate, making the
specific gravity value unnecessary.
Compression & Resiliency: CityMix is a resilient
material, as evident from lab testing and field experience in both
pumping and mixing applications. The material exhibits little or no
swelling of concrete mixtures after incorporation into the
manufacturing or placing process.
Water Absorption: CityMix has negligible water absorbance
due to the closed cell nature of the EPS particles and its surface
coating material.
Bagging Dry Cement-Based Mixtures: When
blending and bagging dry concrete products such as stucco base coat
and premixed concrete, the CityMix component must be dried to
acceptable standards to prevent any risk of premature hydration.
Please contact your CityMix representative to discuss acceptable
drying, packaging and storage methods and conditions.
Use of Additives: CityMix does not require accompanying
use of any special additives, but is compatible with mix designs
incorporating various and common air entraining agents, plasticizers,
surfactants, etc.
Maximum Usage: CityMix can be used in structural concrete
to reduce overall concrete weight by up to approximately 20%, and
can also be used to create weight reduction up to 75%, or more, in
various non-structural products and applications.
Air Content: The air content of concrete mixes containing
CityMix should be maintained according to codes and standards. As
with many cementitious mixtures the air content may vary with
vibration time, frequency and amplitude. A minimum addition volume
of CityMix can be determined that will provide the void structure for
freeze-thaw durability, but only by testing the particular mix design.
Contact your CityMix representative for more information.
Mixing & Batching: CityMix can be added at any point during
the process, although users should be aware of, and adjust for, any
possible pulverizing action caused by the manufacturing process.
CityMix is not hydrophobic during the mixing process so it will easily
and quickly incorporate into wet concrete mixtures. An ideal mixing
procedure can be quickly developed to prevent under or over mixing.
Most common types of mixing equipment such as paddle, pan, drum
and/or ribbon mixers can be used. Contact your CityMix representative
when using unusual mixing equipment.
Curing: Curing a cementitious mixture incorporating CityMix
material may require a slightly longer initial curing period. Cure
properly with high humidity similar to other cementitious mixtures.
Conveyance: CityMix is a very lightweight material and is able
to be conveyed within a manufacturing facility with airvey equipment
or by many methods of gravity flow. Static charge should not pose a
conveyance hindrance.
End-of-Life-Cycle Usage: Concrete products containing
CityMix can be recycled for backfill, roadbed and other forms of
recycled concrete uses. Please contact your CityMix representative to
discuss further recycling specifics.
Testing & Certification: Please contact your CityMix
representative for current ICC, ASTM and/or other testing and
certification data.
CityMix, Inc
2031 Fairview Ave. East, Unit H
Seattle, WA 98102 www.citymix.com Version: 3.3 March 2015

Additional information

Weight 200 lbs
Dimensions 48 × 48 × 48 in
Size

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