Concrete overlays are an alternative to breaking out and replacing an existing concrete slab, which can be expensive, messy, disruptive, and timeconsuming. As latex modified concrete cures, the polymer forms internal plastic films and provides the following improvements to the concrete surface. Pdf modified concrete using polymers and locally available. Polymer concrete and premixed over lays can be cast in.
The test sections will be monitored for a minimum of five years to determine the performance of the ppc with particular emphasis on its ability to resist studded tire wear. The ductility property of the polymer modified concrete is more compared with the conventional concrete. The science of thin, polymermodified toppings concrete. The overlay wa prepared with type ill cemeul atlll with more ement and. Fowler, in failure, distress and repair of concrete structures, 2009. This concrete resurfacer is a special acrylic polymer modified cement used to resurface spalled andor damaged interior and exterior concrete surfaces such as steps, patios, garage floors and sidewalks. Using special techniques and tools, skilled installers can precisely replicate the look and feel of natural stone, brick, tile, or slate. In some cases the polymer is used in addition to portland cement to form polymer cement concrete pcc or polymer modified concrete pmc. Description overlay concrete bridge deck surface with concrete overlay co, latex modified concrete overlay lmc, or multilayer polymer overlay mlpo. 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. Thinfinish premixed polymer modified concrete overlay. From a simple resurfacing to something quite decorative, the possibilities are amazing.
Polymers in concrete have been overseen by committee 548 of the american concrete institute since 1971. The district office is required to submit pavement recommendations on all projects including. Materials provide materials conforming to the pertinent requirements of the following items except as noted below. A concrete overlay can give your ugly concrete patio, floor, or pool deck a makeover. These include rapid curing at ambient temperatures from. Laboratory studies showed potential for the usage of the resulting concrete for bridge decks. A polymermodified topping was used in the 111,000squarefoot plaza. Latexmodified concrete an overview sciencedirect topics. Polymermodified mortars concrete construction magazine. Polymer modified structural repair is a multiuse product that can be used to fix damage to concrete and masonry surfaces. As the demand grew, delong concrete added employees who travel around kentucky, tennessee, and other states for requested jobs. Polishable overlays are making substantial headway into the realm of decorative concrete. Polymer modified concrete types, properties and applications. Doody and rick morgan the results of a survey of polymerconcrete 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.
The results of a survey of polymerconcrete 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. Proportion and mix the latexmodified concrete at the project site using a suitable approved mixer capable of thoroughly mixing the ingredients to a uniform consistency. There are many reasons to add polymers to concrete overlay mixes. Mar 06, 2018 dense concrete overlays hpc concrete with a course aggregate factor of at least 0. Concrete overlays dense concrete overlays hpc concrete with a course aggregate factor of at least 0. These gain a superior tensile and flexural strength compared to the conventional concrete. Decorative concrete overlays are a great solution for interior or exterior concrete flooring.
Where specific slurry, mortar, or concrete mixtures are referenced, specific. Using polymer modified asphalt emulsions in surface. Sep 15, 2001 in liquid form they come in two parts, liquid and powder, to be mixed together. Latex modified concrete heavy civil wagman concrete group. Latexmodified concrete is a portland cement concrete in which an admixture of latex emulsion is used to replace a portion of the mixing water. Emphasis is placed on their use in the transportation sector.
This concrete resurfacer is a special acrylic polymermodified cement used to resurface spalled andor damaged interior and exterior concrete surfaces such as steps, patios, garage floors and sidewalks. Back then there wasnt much for user friendly products that would. It is a preblended cement and sand mixture that also has. Effect of polymer modified fibers on strength of concrete. High molecular weight methacrylate hmwm sealer, prime. Evaluation of the installation and initial condition of. Thinfinish is a hybrid proprietary formula that can make the claim to being the only polymer modified overlay that both chemically and mechanically adheres to concrete substrate. With an overlay, you can give worn, lackluster concrete a decorative makeover or restore it to likenew condition in as little as a day and at a fraction of the cost. Chapter 6application of polymer concrete overlays, p. Polymer modifiers act as an adhesive to enable the modified mortar overlay to stick to a variety of surfaces such as concrete, masonry, brick, wood, rigid polystyrene and polyurethane foam, glass, and metals. Epoxy and urethanemodified concrete decorative concrete toppings are modified with latex polymers, but there are large industrial and commercial markets for polymermodified cementitious toppings based on epoxy and urethane resins. In this report, the use of the general term polymermodified cementitious mixture includes polymermodified cementitious slurry, mortar, and concrete. 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.
Polymer concrete is a composite material in which the aggregate is bound together in a matrix with a polymer binder. Polymer concrete is a type of concrete that uses polymer to replace limetype cements as a binder. This guide provides an overview of thin less than 1 in. Rosphalt is a polymermodified asphalt formulated to be suitable for use as a wearing surface and protection system on bridge decks without the use of a waterproof membrane between the overlay and the concrete deck and without the need for vibratory compaction. Compare and contrast the performance, cost, and benefits of polymer modified versus nonmodified asphalt emulsions. Although concrete is tough, a polymer overlay can make it even tougher. Thin polymer overlays are lightweight due to their 38 in. A study on the application of very rapid hardening acrylic polymer modified concrete for bonded concrete overlay method article pdf available march 2011 with 46 reads how we measure reads. 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. The epoxy polymer forms the binder for this type of concrete overlay. Understanding polymers in concrete concrete construction. Fhwa ltbp summarycurrent information on the use of overlays. Latex modified concretelatex modified concrete microsilica thin polymer synthetic asphaltic. When to use a polymer overlay the concrete network.
Polymer modified steel fiberreinforced concretes were produced with addition of both steel fibers and a styrene butadiene rubber emulsion sbr. Author links open overlay panel gengying li xiaohua zhao. High early strength latex modified concrete overlay michael m. Pdf properties of polymer modified concrete in fresh and.
Pmc, sometimes referred to as latex modified concrete lmc, is widely used as a repair material, particularly in overlays. Latex modified concrete lmc is considered the ideal repair material and is primarily used as a thin bonded overlay to protect bridge decks and parking structures. Nov 07, 2008 a polymer modified topping was used in the 111,000squarefoot plaza. Properties of polymer modified steel fiberreinforced cement concretes. Follow the applicable provisions of item 421, hydraulic cement concrete. For best results, apply to clean surface with a concrete surface profile. Properties of polymer modified steel fiberreinforced cement. Polymer concrete composites possess a unique combination of properties dependent on the formulation. In order to achieve a durable repair overlay, high bonding strength to substrate concrete and having the least amount of cracks in overlay are the main issues.
Were so excited to start launching our new product in 2019 concrete overlays and the howto videos to go along with them. Overlay can be applied over cracks, chips, discoloration and other blemishes, providing a smooth, level, attractive surface thats incredibly durable. Styrenebutadiene rubber sbr latex is one of the more common latices. In dry form they are prepackaged materials blended for specific applications. Latexmodified concrete has been widely used in the field of patching, resurfacing or overlaying works for damaged bridge decks for the last 30 years, because of. The new concrete overlay kits are diy friendly, so dont be intimidated. Polymer latexes when combined with concrete form what is called latexmodified concrete. Determine the applicability of polymer modified asphalt emulsions to low i. Pdf effect of polymer modified fibers on strength of concrete.
You should know what polymers you are using and their strengths and weaknesses. Whether in liquid or dry form, each polymer has strengths and weaknesses and recommended uses. It is an emulsion, that is, a suspension of colloidal polymer beads in water. Both flexural and compressive strength of the composites after 28 days curing were tested. Polymers improve adhesion to the old surface, flexural strength, tensile. Portland cementbased, polymermodified concrete resurfacing material 1. High early strength latexmodified concrete overlay. A concrete overlay makeover how i resurface ugly concrete. Pdf a study on the application of very rapid hardening. Adding pattern, texture, and color to exterior concrete slabs, including patios, pool decks, driveways, and sidewalks. Polymer modified thinset mortar is designed to adhere tile to concrete and cement board substrates without needing to soak the tiles beforehand. Guide to concrete overlay solutions overview of the bonded resurfacing family bonded concrete resurfacing of concrete pavements thickness. Its advantages are proper bonding strength to substrate concrete, high tensile and flexural strength and low amount of shrinkage and permeability which makes it a suitable material for repair overlays.
Durability of epoxy polymer concrete overlays for bridge decks. For best results, apply to clean surface with a concrete surface profile texture between csp 4 and. Polymer modified concrete pmc consists of portland cement concrete with a polymer modifier. Hmwm resin is a chemical that is used by state transportation departments as a surface sealer for concrete bridge decks, as a crack sealer for concrete bridge decks, as a prime coat bond coat placed on a concrete bridge deck before a polyester polymer overlay is put in place, and as a polymer concrete overlay. Determination and prediction of bonding strength of polymer. The polymer modified concrete can be used in the repair and the rehabilitation of old damaged concrete. Latex modified concrete for bridge deck overlays cemen tech. Decorative concrete overlays everything about concrete. A description and methods for modification and improvement journal of materials education vol.
Quick repairs of concrete overlays, dams, pipes and utility components. Concrete overlays butterfield t stampable t stampable overlay is a polymer modified cementitious topping formulated for resurfacing structurally sound, nonmoving concrete floors and exterior hardscapes. Being a concrete contractor since the early 80s, ive seen a lot of concrete that needs a new surface. The properties of polymer concrete make it suitable for the repair of concrete structures and for the placement of impermeable, skidresistant overlays. Distribution statement polyester polymer concrete, ppc, rut filling, studded. The cost effectiveness of surface impregnation of concrete subject to. Concrete overlay howto video new product coming 2019. The polymer acts as a water reducer, ultimately leading to a stronger mortar with fewer voids, or weak spots. The primary application is for overlays on bridge decks. Polymer modified pm structural repair is a multiuse product that can be used to fix damage to concrete and masonry surfaces.
Bridge deck concrete overlays the texas department of. 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. This concrete resurfacer develops a tough bond and dries to a concrete gray color. Fhwa ltbp summarycurrent information on the use of. The overlay protects the deck by providing a nonpermeable sacrificial layer that prevents water and chlorides from penetrating to the deck reinforcing steel typical overlay materials include. Properties of polymer modified steel fiberreinforced. No other overlay on the market has been able to match the performance, durability or ease of use of thinfinish and yet maintain an economical solution. Reinforced concrete overlay latexmodified concrete overlay multilayer polymer overlay. Compare and contrast the performance, cost, and benefits of polymer modified versus non modified asphalt emulsions. The composites do not contain a hydrated cement phase, although portland cement can be used as an aggregate or filler. The surface shall be damp at the time the overlay is placed.
Determination and prediction of bonding strength of. On such projects which also require polymer, 3 lifts of polymer modified mix will be required. Polymer modified mortar types, properties, and applications. Thin polymer overlays offer more rapid construction, curing in 4 to 8 hours compared to 42 hours for a modified concrete overlay. In the 1960s, dow chemical developed an overlay material using lmc. A concrete overlay can be very thin, 116th of an inch or up to 12 an inch or more depending on your situation. Tom graf, owner of lifetime floors, which manufactures the polymermodified artera and the portland cementbased mosaic toppings, thinks the general state of the economy is one reason why. Polymer modified mortars are widely used for repair purposes because of their minimized shrinkage and ability to bond with the densest surfaces. The science of thin, polymermodified toppings concrete decor. The technology is similar to normal pcc since the polymer modifier is added similar to other admixtures to the. It is a preblended cement and sand mixture that also has the addition of a polymer as a bonding and application agent. Surfaces should be rougher than light broom finish to ensure proper bond adhesion. Oconnor and saiidi carried out a comparative study on the basic engineering properties of polyesterstyrene polymer concrete overlays and.