High molecular weight methacrylate sealing of a bridge. Overview of high molecular weight methacrylate for sealing cracks in concrete bridge decks. Properly sealing cracks before applying epoxy floor coating. Repairing cracks in a parking deck concrete construction. Hmwm has deep penetration into concrete surfaces through very low viscosity, then polymerizes in concrete to form a tough plastic seal. Use of high molecular weight methacrylate for repairing cracks in concrete springerlink. Masterseal 630 methacrylate resin for crack sealing. Consolideck products help finished concrete floors last longer and cost less to maintain. Pdf gravityfill polymer crack sealers researchgate. With an easy single application, sealate deeply penetrates, quickly fills and bonds cracks, and seals pores in existing concrete including roadways, bridges, and various concrete structures and surfaces. Cracking in bridge deck concrete is a serious problem because cracks allow the direct infiltration of water and chloride ion and the carbonation of the walls of the crack. These materials are available in low elongation 5% and high elongation 30% formulations. Seal, replace, reconstruct, or eliminate deck joints.
Transpo t78 polymer crack healersealer is a specially formulated, low viscosity, fast setting, methyl methacrylate mma reactive resin system that is highly effective for sealing and filling cracks and pores in concrete surfaces and structures. A new compatibility test setup was designed and tested based on the concrete bridge deck cracking and delamination mechanism theory. Both types are similar in application and performance to ultralowviscosity epoxies. In california, high molecular weight methacrylate hmwm is frequently used as a crack sealer, with millions of dollars spent annually on maintenance applications of methacrylate on stateowned. Used in a broad range of climates, kbp 204103 high molecular weight methacrylate hmwm healer sealer has a 2hour cure even in cold or humid conditions. Ultimate strains across repaired cracks, modulus of rupture, and percent of crack filled for slabs repaired with the monomers and stiffnesses of repaired beams were investigated. Epoxy injection has been widely used, but due to its relatively high cost, it is not practical for many repairs. Flexible epoxy masonry and concrete crack sealant edison. High molecular weight methacrylate resin for crack and joint sealing product restriction. The sealing was necessary to prevent deicing salt brine from entering a substantial number of transverse cracks that coincided with the epoxy coated top.
High molecular weight methacrylate sealing of a bridge deck. Overview of highmolecularweight methacrylate for sealing. Atlas techseal hmwm description atlas techseal hmwm is a super low viscosity, deep penetrating, high molecular weight methacrylate sealer that is applied to concrete surfaces to. Use of high molecular weight methacrylate to seal bridge deck cracks. Use of high molecular weight methacrylate for repairing. Transpos t70mx30 sealate is a gravityfed, high molecular weight methacrylate resin system that is highly effective for sealing and filling cracks in concrete structures. Preventative maintenance for concrete bridge decks michael sprinkel, p. Before any concrete repair is carried out, the underlying. Mma resins for completing new industrial floor coating projects and refurbishments on a tight deadline, re active resins are the product of choice.
It may be used as a gravity fed resin or as a specialized crack injection product. High molecular weight methacrylate for sealing cracked. All substrates to be sealed must be clean, sound, and free of. Hmwm sealer and waterdispersed epoxy have relatively low permeability. Evaluation of the compatibility of repair materials for. Technical data sheet high molecular weight methacrylate hmwm crack sealer sealate sealate t70 and t70 mx30 is a specially formulated, high molecular weight methacrylate resin system that is highly effective for sealing and filling cracks in concrete structures. Duraguard 401 is a 3 component, low viscosity, solvent free, high molecular weight methacrylate penetrating sealer and crack healer. The inspection revealed the cracking appeared to be from shrinkage while the new hpc bridge deck was curing. Sealate crack sealers are specially formulated high molecular weight methacrylate hmwm resin materials that strengthen and extend the life of concrete.
High molecular weight methacrylate epoxy 100% solids 70% solids technologies very rapid traffic re. The sealing was necessary to prevent deicing salt brine from entering a substantial number. These systems are used alone for sealing and repairing cracks in horizontal concrete. Use high molecular weight methacrylate resin sealer conforming to 705. Sealate t70mx30 is a specially formulated, high molecular weight methacrylate resin system by transpo industries inc. Different healer sealer technologies are available, such as, methyl methacrylate mma, high molecular weight. Concrete sealer hmwm resin section 515 of the standard specifications is hereby revised for this project to include the following. In recent years, the use of high molecular weight methacrylate has been successfully used to seal cracks and. He suggested injecting the cracks from the bottom up, leaving the tops of the cracks unsealed to get a good look at how well the epoxy is penetrating. Starting in 2007, core every bridge deck treated with hmwm. Another possibility is to gravityfeed either a lowviscosity epoxy or high molecular weight methacrylate hmwm into the cracks.
Determine the effectiveness of high molecular weight methacrylate to penetrate concrete bridge deck cracks. Reactive resins differ from other floor resurfacing and repair materials because they contain the monomer methyl methacrylate mma. The sealing was necessary to prevent deicing salt brine from entering a substantial number of transverse cracks that coincided with the epoxycoated top steel and unprotected bottom steel. High molecular weight methacrylate high molecular weight methacrylates hmwm have been used in the united states for over 20 years as concrete crack and surface porosity sealers. Penetrating by gravity alone, methacrylates fill the pores in horizontal concrete surfaces and bond small cracks. Dural mma healer sealer is typically used on bridge decks, parking structures or as a general penetrating sealer to prevent moisture intrusion. Marks the iowa department of transportation used a high molecular weight methacrylate hmwm resin to seal a 3,340ft x 64ft bridge deck in october 1986. High molecular weight methacrylate hmwm, two epoxies, and a silane were assessed for their skid resistance and ability to block or slow down moisture and chloride ion penetration into concrete bridge decks. The iowa department of transportation used a high molecu lar weight methacrylate hmwm resin to seal a 3,340 ft. The iowa department of transportation used a high molecular weight methacrylate hmwm resin to seal a 3,340ft x 64ft bridge deck in october 1986. The low viscosity allows it to penetrate deep into fine cracks by gravity alone and then seal them.
Sealate is a specially formulated, high molecular weight methacrylate resin system that is highly effective for sealing and filling cracks in concrete structures. Healersealers for the protection of bridge decks bridge. This work consists of furnishing and placing a high molecular weight methacrylate hmwm resin system with sand and absorbent material to concrete bridge decks or rigid overlays. It is available in both t70 and t70 mx30 formulations. Transportation safety materials and products for airports, bridges, roadways, tunnels, and railways. Masterseal 630 is a very low viscosity, low surface tension, solventfree, rapid curing reactive methacrylate resin formulated to penetrate, repair and seal cracks in concrete substrates. High molecular weight methacrylate hmwm is a relatively new monomer that has many of the advantages of methyl methacrylate mma, namely low viscosity, potential for curing over a wide range of.
Perform the surface preparation and application of a high molecular weight methacrylate to seal cracks. The sealing was necessary o prevent deicing salt brine from entering a substantial number of transverse cracks that coincided with the epoxy coated top. Repairing cracks in portland cement concrete using polymers. Wsdot materials laboratory qualified products list qpl. High molecular weight methacrylate sealing of a bridge deck vernon j. All concrete cracks shrinkage cracks are very common. Sealing cracks and concrete structure surfaces product type. Current sealants for sealing cracks and blocking water in steelreinforced concrete include low viscosity epoxy, methyl methacrylate, high molecular weight methacrylate hmwm, and urethane. High molecular weight methacrylate for sealing cracked concrete.
Field guide to methacrylate concrete repair flood coat. The crew treated the larger cracks individually to make sure they were filled with the sealer. High molecular weight methacrylate resin system for sealing and filling cracks in concrete structuresavailable in t70 and t70 mx30 formulationsvery low. Feb 10, 2015 learn more about this specially formulated high molecular weight methacrylate hmwm resin material which is highly effective for sealing and filling cracks and pores in concrete structures. Features and advantages very low viscosity deep crack penetration fills and bonds cracks. Degadeck csp reactive methacrylate resin for sealing cracks and concrete decks, for use on highways, bridge decks, infrastructure masterseal 630 methacrylate resin for crack sealing. High molecular weight methacrylate epoxy urethane 2. Learn more about this specially formulated high molecular weight methacrylate hmwm resin material which is highly effective for sealing and filling cracks and pores in concrete. Grout is a flowable plastic material and should have negligible shrinkage to fill the gap or voids completely and should remain stable without cracking, delamination or crumbling. High molecular weight methacrylate hmwm chemmasters duraguard 401 description.
Duraguard 401 high molecular weight methacrylate penetrating sealer duraguard 401 is a 3 component, low viscosity, solvent free, high molecular weight methacrylate penetrating sealer and crack healer. This item shall consist of sealing concrete bridge decks in accordance with this specification and details shown in the plans. The 10,000squarefoot deck had several small cracks, in addition to 1600 linear feet of largerwidth cracks. Research was conducted to indentify improved methods for sealing cracks in portland. Many of these products are red listcompliant, qualifying them for living buildings and other high performance jobs.
Item 526 high molecular weight methacrylate hmwm flood coat crack sealer. Repairing cracks in portland cement concrete using polymers research project 31884385. Design of artificially cracked concrete specimens for. Definition of terms 1 hmwm monomer a synthesized methacrylate monomer characterized by high molecular weight, low viscosity and low volatility. The repair materials used in this study include lab formulated inorganic nanoaluminum silicates and commercially available organic twopart epoxy systems. Page 2 high molecular weight methacrylate sealing of an iowa bridge deck part i initial application introduction the us 6 bridge over the mississippi river at keokuk, iowa. Current and futuristic methods to seal concrete cracks. Sealate concrete sealer vertical and injection applications demo.
Moving cracks should be repaired in accordance with the project specifications or american concrete international aci standards which include lowviscosity epoxy, methyl methacrylate or high molecular weight methacrylate. Duraguard 401 may be used as a gravity feed resin or as a. High molecular weight methacrylate crack penetration study. Typically monomer may flow out up to six inches on either side of the crack and pond on the surface until broomed or squeegeed up. Cracking in concrete bridge decks is widely regarded as a longterm durability and maintenance problem that requires attention. Three high molecular weight methacrylate monomer systems were tested to determine their effectiveness in repairing cracked portland cement concrete ppc. Specialty construction products recommended a high molecular weight methacrylate penetrating crack healer sealer for the surface. Mar 28, 2016 this application method is also used with hmwm high molecular weight methacrylate or mma methyl methacrylate resins that have a level of viscosity so low that can be compared to water. Repairing cracks in portland cement concrete using. Typically monomer may flow out up to six inches on. Fdot standard specifications for road and bridge construction. Overview of high molecular weight methacrylate for sealing cracks in concrete bridge decks article in transportation research record journal of the transportation research board 22021. High bond strength glues back together 2ttii linear crack treatment with hmwm 2 component part mixing. Home general healersealers for the protection of bridge decks.
With an easy single application, sealate deeply penetrates, quickly fills and bonds cracks, and seals pores in existing concrete including roadw. Presented are the results of a study undertaken to evaluate the performance of high molecular weight methacrylate hmwm monomers used to a treat the cracks and seal the surfaces of two tined bridge decks, b seal the surface of one untined bridge deck, c fill the cracks and seal the surface of a pavement to retard an alkalisilica. Sealing up all cracks concrete construction magazine. High molecular weight methacrylate monomer systems hmwm were investigated for brushing on the surface of cracked. There are different types of grouts such as cement grout, polymercement slurry, epoxy, urethane, and high molecular weight methacrylate hmwm. Dural mma healersealer is a reactive methacrylate resin, which hardens rapidly with the addition of dural mma healer. Reactive methacrylate resin for sealing cracks and concrete decks formerly. Overview of high molecularweight methacrylate for sealing cracks in concrete bridge decks. Sealing cracks on bridge decks changes to section 4 of.
Overview of high molecular weight methacrylate for sealing cracks in concrete bridge decks ashraf rahim, daniel jansen, nagi aboshadi, and jaro simek transportation research record 2010 2202. Buy methyl methacrylate mma coatings for concrete floors. Our t78 polymer crack healer sealer form transpo industries is a specially formulated, low viscosity, fast setting, methyl methacrylate mma reactive resin system that is highly effective for sealing and filling cracks and pores in concrete surfaces and structures. Duraguard 40e high molecular weight methacrylate penetrating sealer with 30% tensile elongation duraguard 40e is a 3component, low viscosity, solvent free, high molecular weight methacrylate penetrating sealer and crack healer with enhanced tensile elongation for use in high.
In such cases, flexiseal 510 effectively penetrates cracks while providing a more abrasionresistant seal coating than competitive, more expensive high molecular weight methacrylate monomer systems. Polymer materials for bridge deck rehabilitation and. The sealing of cracks in concrete surfaces has been one of the most difficult types of repair to accomplish. Methyl methacrylate mma concrete crack healer and sealer. High molecular weight methacrylate hmwm crack sealer product must apprea on nhdot qpl section 526 b. Techseal hmwm is an extremely low viscosity product and may penetrate completely through the deck. Duraguard 401 may be used as a gravity feed resin or as a specialized crack injection product. Rapid cure mma crack sealer t78 transpo industries. Overview of high molecularweight methacrylate for sealing cracks in concrete bridge decks article in transportation research record journal of the transportation research board 22021. Repair of cracked concrete with high molecular weight. Sep 18, 2017 this study evaluates the compatibility of repair materials for concrete bridge decks. In california, highmolecularweight methacrylate hmwm is frequently used as a crack sealer, with millions of dollars spent annually on maintenance applications of methacrylate on stateowned bridges. Use the same kind and color of aggregate for all concrete above the ground line in a given substructure unit and for all concrete in a given superstructure.
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