Epoxy and urethane modified concrete decorative concrete toppings are modified with latex polymers, but there are large industrial and commercial markets for polymer modified cementitious toppings based on epoxy and urethane resins. Polyester polymer concrete ppc was used in a trial application on a. Most aci standards and committee reports are gathered together in the annually revised aci manual of concrete practice mcp. Bridge rehabilitation or repairbridge rehabilitation or repair. The science of thin, polymermodified toppings concrete decor. Polymer modified mortar types, properties, and applications.
Through proper bridge deck surface preparation superior bonding of the overlay will occur this will lead to the longest lasting latex modified concrete overlays. Mar 06, 2018 concrete overlays dense concrete overlays hpc concrete with a course aggregate factor of at least 0. How to install custom polymermodified mortars youtube. The impermeable polymer concrete overlays will help extend the life span of even saltcontaminated bridge decks. The result was a growing reputation for handling latex concrete overlays. Guide bridge special provisions illinois department of. Polymer modified concretes in bridge deck overlay systems. Be conscious of weather conditions avoid hot, dry, windy weather. Durability of epoxy polymer concrete overlays for bridge decks.
Using special techniques and tools, skilled installers can precisely replicate the look and feel of natural stone, brick, tile, or slate. Rapid setting concrete and masonry repair mortar that can be shaved to match the contour of the surrounding concrete. Follow the applicable provisions of item 421, hydraulic cement concrete. Overlay can be applied over cracks, chips, discoloration and other blemishes, providing a smooth, level, attractive surface thats incredibly durable. Flexural strengths and fibre efficiency of steelfibre. Latex modified concrete was developed in the 1960s for bridge deck overlays, and since then over 10,000 bridges have been successfully rehabilitated. We specialize in the installation of concrete like polymer modified cement overlays. Polymer modified mortar and concrete are prepared by mixing either a polymer or monomer in a dispersed, powdery or liquid form with fresh cement mortar and concrete mixtures, and subsequently. Fhwa ltbp summarycurrent information on the use of. As the demand grew, delong concrete added employees who travel around kentucky, tennessee, and other states for requested jobs. The objectives of this work were to document the stateofthepractice with respect to polymer concrete overlays, document the placement of two overlays in iowa, monitor the field performance of the overlays over a twoyear period, and relate their performance to material usage andor workmanship. The main objective of this study was to develop thin lift overlay mixtures with polymer modified asphalt for use in new england. S1097 section i manufacturer product information manufacturers name.
Quikrete structural concrete is dot approved in a variety of locations throughout the country. Polymer materials for bridge deck rehabilitation and preservation. However, in polymer concrete overlays, portland cement is not used as the binderpolymers are used as the binder. Report on polymermodified concrete reported by aci committee 548 aci 548. Whether in liquid or dry form, each polymer has strengths and weaknesses and recommended uses. Concrete renew is a onecomponent, polymer modified cementitious material for the resurfacing of existing concrete to provide a likenew look to concrete surfaces. When to use a polymer overlay the concrete network. Doody and rick morgan the results of a survey of polymer concrete bridge deck installations test patch and overlay in new york and the results of a canvassing of the experiences of other states with these overlays are summarized. In liquid form they come in two parts, liquid and powder, to be mixed together. All rights reserved including rights of reproduction and use in any form or by any means. The two bridges a johnson county, iowa bridge over i80 on 12th avenue in coralville, and the. Highperformance concrete resurfacer concrete renew is a onecomponent, polymer modified cementitious material for the resurfacing of existing concrete to provide a likenew look to concrete surfaces.
A polymer modified topping was used in the 111,000squarefoot plaza. Speed crete pm polymer modified, easy to use repair mortar that can be applied from featheredge to 3 inches 76 mm per lift. Can be applied in a flowable consistency using a longhandled squeegee or in a stiffer consistency using a trowel. To download an individual file to your hard drive click the link with the right mouse button, then choose save target as.
In the 1960s, dow chemical developed an overlay material using lmc. The aggregates are then added to form the concrete overlay. Epoxy polymer concrete overlays for castinplace concrete decks, the binder used in the concrete mixture to hold the other ingredients together is portland cement. Ideal application temperatures are between 50f90f 10 90c. Fhwa ltbp summarycurrent information on the use of overlays. Overlays and sealers protect concrete structures from deterioration by inhibiting the ingress of chlorides, chemicals, and moisture and by slowing active corrosion. National cooperative highway research program nchrp transportation research board of the national academies prepared by.
Prior to placement of the hydraulic cement concrete overlays, all six bridge decks were covered with epoxy overlays, and, thus, no cracks or patches were visible. Guidelines for selection of bridge deck overlays, sealers and treatments requested by. Pdf modified concrete using polymers and locally available. The binder actually consists of two components blended togethera component with the epoxy resin and a component with the curing or hardening material. Pdf effect of polymer modified fibers on strength of concrete. Sikaquick concrete resurfacer is a polymer modified, 1component, cementitious resurfacing compound. Polymer materials for bridge deck rehabilitation and. Akona polymer modified concrete resurfacer is a special acrylic polymer modified cement used to resurface spalled andor damaged interior and exterior concrete surfaces such as garage floors, sidewalks, patios, and steps. American concrete institute 38800 country club drive farmington hills, mi 48331 u. Elite crete systems thinfinish is the backbone to all of elite crete systems overlay products and is perhaps the most widely used polymer modified overlay system in the world today. These overlays are designed to be installed at approx 1in.
Although concrete is tough, a polymer overlay can make it even tougher. It is the most widely used application of polymer modified mortar. Do not apply over concrete cured less than 7 days or. The primary application is for overlays on bridge decks. Thin overlays, those about 1 inch thick, are normally done with epoxy mortar or concrete.
There are many reasons to add polymers to concrete overlay mixes. Polymer concrete topic american concrete institute. Polymer concrete overlay evaluation, final report iowa. It is a cementitious material with additives, which impart controlled expansion characteristics in the plastic state while minimising water demand. Akona akonakote pourable concrete patch is a flowable, squeegeegrade, polymermodified, portland cement based, patching and resurfacing mix. The polymer modified concrete can be used in the repair and the rehabilitation of old damaged concrete. Quick repairs of concrete overlays, dams, pipes and utility components. Provide an epoxy resin base and hardener that is a modified type iii, twocomponent. Latexmodified concrete an overview sciencedirect topics. Verticoat supreme microsilica and latex modified, nonsag. Polymer modified thinset mortar is designed to adhere tile to concrete and cement board substrates without needing to soak the tiles beforehand. Akonakote pourable concrete patch tds tcc materials. The composites do not contain a hydrated cement phase, although portland cement can be used as an aggregate or filler. Using styrene butadiene latex as a modifier to concrete.
The science of thin, polymermodified toppings concrete. Oct 18, 2004 the three most popular concrete overlay options in the u. Epoxybased flexible polymer concrete overlays have been used in the past 15 years in north. A sandless, onecomponent, rapid hardening, polymer modified concrete resurfacing mortar for smoothing, resurfacing, rubbing, and restoring concrete surfaces.
These advanced materials enable us to offer durable solutions that conventional concrete contractors do not provide. Were so excited to start launching our new product in 2019 concrete overlays and the howto videos to go along with them. Provide class co concrete with a coarse aggregate factor of at least 0. Concrete overlays dense concrete overlays hpc concrete with a course aggregate factor of at least 0. This work shall consist of furnishing and placing a polyester polymer concrete ppc. The technology is similar to normal pcc since the polymer modifier is added similar to other admixtures to the. To view the file, click the link with the left mouse button. The polyester resin binder in the polyester modified concrete shall be approximately. The limitations of concrete overlays include their use in a situations in which the existing structure cannot adequately support the additional dead load of a concrete overlay. Bridge deck overlay modified concrete suppliers, llc. Latex modified concretelatex modified concrete microsilica thin polymer synthetic asphaltic. Concrete overlays 1 t stampable overlay, unimix integral color, permacast antiquing release, fieldstone stamp 2 t fine overlay, unimix integral color, permacast shakeon color hardener, running bond stencil. Designed for use on exterior concrete substrates such as sidewalks, walkways, patios, parking garages, and residential driveways.
This document is disseminated under the sponsorship of the. As part of our popular video guide on how to install tile, this video shows you how to install custom building products polymer modified mortars. Thinfinish premixed polymer modified concrete overlay elite crete systems thinfinish is the backbone to all of elite crete systems overlay products and is perhaps the most widely used polymer modified overlay system in the world today. These include rapid curing at ambient temperatures from. Polymer overlays and penetrating deck sealers are used as preventive maintenance options to extend the service life of concrete bridge decks. The final color of polymermodified concrete resurfacer will be effected by application thickness, temperature, relative humidity, wind velocity, sunlight and shading, and moisture content of the surface.
One of the major uses of concrete modified with styrenebutadiene latex is for bonded overlays on bridge and parking garage decks. The application has been in use for over 20 years, demonstrating the viability and longterm performance of this material. Polymer concrete composites possess a unique combination of properties dependent on the formulation. Pourable concrete patch is easy to mix and use, it corrects defects on concrete surfaces up to. Using styrene butadiene latex as a modifier to concrete for. Polymer concrete pc is a composite material in which the binder consists. Identifying the optimum time for installation of overlays and sealers is key to. Easily applied by smoothing trowel or rubber squeegee. Reduced water and salt ingress makes polymermodified mortar ideal for masonry exposed to weathering and other exterior conditions. Hmwm is required as a primer for all polyester overlays.
Concrete overlay howto video new product coming 2019. The ductility property of the polymer modified concrete is more compared with the conventional concrete. Proportion and mix the latex modified concrete at the project site using a suitable approved mixer capable of thoroughly mixing the ingredients to a uniform consistency. Polymer modified concrete types, properties and applications. Use of polymer overlays or sealers on new bridges 2017, tr. Adding pattern, texture, and color to exterior concrete slabs, including patios, pool decks, driveways, and sidewalks. These gain a superior tensile and flexural strength compared to the conventional concrete. The condition of the ep5 modified epoxy concrete overlay on bridge 2 was excellent. Aci documents are requested to contact aci via the errata website at. In dry form they are prepackaged materials blended for specific applications. Provide an epoxy resin base and hardener that is a modified type iii, two component.
The materials and processes that we use are the result of years of research and testing. Polymer particles coalesce or fuse together when in intimate contact to form highly. A general purpose polymer modified concrete repair mortar for concrete floors, walls, precast, tiltup and masonry surfaces. This overlay system was developed by caltrans and has been primarily used in california and nevada with several installations in new york. Thinfinish premixed polymer modified concrete overlay. Typically, no primers are required for this type of overlay.
It is a preblended cement and sand mixture that also has the addition of a polymer as a bonding and application agent. The three most popular concrete overlay options in the u. Sep 15, 2001 in liquid form they come in two parts, liquid and powder, to be mixed together. Polymer latexes when combined with concrete form what is called latexmodified concrete. Latex modified concrete for bridge deck overlays cemen tech. The type of polymer overlay used in a repair is generally decided based on the thickness of the overlay. Dec 21, 2018 were so excited to start launching our new product in 2019 concrete overlays and the howto videos to go along with them. The new concrete overlay kits are diy friendly, so dont be intimidated. Effect of polymer modified fibers on strength of concrete. Download all guide bridge special provisions word documents download all guide bridge special provisions. No other overlay on the market has been able to match the performance, durability or ease of use of. Polymer modified structural repair is a multiuse product that can be used to fix damage to concrete and masonry surfaces. Polymer concrete is a composite material in which the aggregate is bound together in a matrix with a polymer binder.