DynaCrete RMO Concentrate Concrete & Masonry Products Repair Mortar & Overlay, Concentrated Additive Description or slate patterns are also easily Wood Surfaces: ® created by using tape-off or Surfaces must be secured with DynaCrete RMO Concentrate is a template systems with contrasting screws to the structure, and all proprietary admixture designed to color coats. holes, seams and cracks shall be be used as a modifier for Portland filled and then reinforced using cement. It gives Portland cement Advantages: DynaCrete® anti-alkaline unusual and unique properties not Reinforcing Fabric. obtainable from other admixtures l Superior adhesive strength. or modifiers. l Flexibility without fatigue. Hairline Cracks: DynaCrete® RMO Concentrate l Superior freeze-thaw Minor cracks or spalls do not contains proprietary copolymer capabilities. require pre-filling. DynaCrete® components, which induce cross l Waterproofs and seals. RMO Concentrate made into a linking in the presence of Portland l Excellent primer/bond coat for flowable "Squeegee" mix will cement, producing a chemical as secondary coatings & systems. penetrate the cracks and substrate well as mechanical bond both l Weather, abrasion and UV surface creating better adhesion adhesively and cohesively. resistant. than drier patching mixes. l Easy to apply, clean with water. Another method is to pour the Uses l Non-toxic, environmentally Squeegee mix directly into the ® friendly. cracks, voids, and spalled areas l DynaCrete RMO Concentrate, l Non-reemulsifiable waterborne and allow to self level. when added to Portland cement, sand and water, provides copolymer. Larger Cracks: extraordinary adhesion and l Creates virtually any type of Depending on the extent of flexibility without fatigue, in surface texture. cracking, DynaCrete® anti-alkaline, thickness’ applied from paper reinforcing fabric should be thin to as thick as desired. The Directions for Use: embedded into the Squeegee mix. result is a durable patch and Preparation: Refer to Squeegee Mix Application overlay system that will not Guidelines. delaminate, even at a feather All concrete, wood, asphalt, masonry, metal and other surfaces Asphalt Surfaces and Cracks: edge. must be structurally sound, clean Surfaces and cracks must be l An excellent priming system, or completely dry prior to application. and free of coatings, curing com- bond coat, for other coatings DynaCrete® RMO makes an pounds, dirt, oils, grease, laitance, and systems. exceptional repair mortar for efflorescence, mildew, fungus, or l DynaCrete® RMO Concentrate any contaminant that prevents asphalt cracks. allows cement based mixtures good adhesion. Note: Do not use immediately to be used for permanent Remove coatings & contaminants over Hotmix asphalt applications. repairs and resurfacing on using approved methods such as Questionable Surfaces: virtually any sound surface. shot blasting, sand blasting or high Chalky, dusting, and pigmented This includes concrete, wood, pressure water blasting. surfaces should be pre-treated masonry, asphalt, metal, and Degreasing and etching of with DynaCrete® PIM (Permanent surfaces not normally consid- surfaces is accomplished using Internal Membrane) and allowed to ered sufficiently “bondable”. DynaCrete® Penetrating Cleaner & cure for 24 hrs. Prime areas with l DynaCrete® RMO Concentrate Etcher. (1) part DynaCrete® RMO Concen- can be used to produce textures Acid Etching is not recommended trate to (1-2) parts of clean water ie. smooth, slip-resistant, swirl, as this weakens concrete surfaces. knockdown, broom finish, immediately prior to application of orange peel and other textures Concrete Surfaces: squeegee mixes, overlays & normally possible with concrete Allow new concrete to cure a patches. surfaces. Special decorative minimum of 72 hours prior to effects such as brick, stone, application. Page 1 of 3 Dynacrete, International Inc. DynaCrete Phone: 1 (250) 752-0198 Concrete & Masonry Products Fax: 1 (250) 752-0197 DECEMBER 2000 Expansion Joints “Primer Mix” or “Bond Coat” • Pre-blend sand and cement, one The mix ratio is 1:1:1 (1 part RMO (1) part cement to two (2) or three Existing expansion joints should Concentrate, 1 part water, 1 part (3) parts silica sand. always be maintained. Previously cement). This mixture is used as a • Prepare the DynaCrete® RMO filled joints should be masked off bond coat over surfaces prior to Concentrate Pre-Mix. prior to application. Unfilled the application of patching and • Add Pre-Mix to pre-blended dry expansion joints should be treated formless mixes, or overlays. components. Add only enough using two (2) brush applications of liquid to form the mixture into a RMO Squeegee Mix to the joint “Squeegee Mix” ball using hands. surface to provide a continuous Primarily used for overlays: ® waterproof surface. When dry, ®Mix 5 gallons DynaCrete RMO expansion joints can be filled with Concentrate with 5-10 gallons of Application Guidelines an approved joint compound. clean water. Mix well. Squeegee (Mix) Application ®Add one 98 pound bag Portland Mixing Equipment 1. Some applications require cement. Mix until no lumps priming with a Pre-Mix or Primer • Drill and mixing paddle remain. Mix/Bond Coat. Otherwise: • Mortar mixers or Transit mixers ®Add two 100 pound bags silica 2. Pre-dampen surfaces with water • Cement trucks sand. Mix until no lumps remain. prior to application, leave no Size of sand determines thickness Application Equipment puddles. Keep surface damp and texture of coating. throughout application. • Squeegee ®Add additional water to create an 3. Pour RMO Squeegee Mix onto • Straight edge easily flowable consistancy. surface and spread evenly by • Fresno trowel ® For smaller squeegee batches squeegee, straight-edge, dragbox, • Dragbox use a mix ratio of: 1 part RMO broom, brush or trowel. For large • Asphalt emulsion sprayer Concentrate, 2 parts water, 2 parts jobs, a sealcoat machine may be cement, and 4 parts sand. DynaCrete® RMO Mixes used. Keep surfaces in front of Mixing is done by mechanical squeegee moist. This is Depending on application, mixes means using a 1/2" drill with a important for ease of application vary from a very fluid "squeegee" proper mixing paddle. Mortar type and maximum bond. Allow to dry. mix to dry, zero slump, patching mixing equipment can be used for 4. Remove any ridges or mixes. For a specific application, larger batches. When color irregularities from the finished please refer to the “Mixing Ratios pigments are to be added, pre-mix surface using a scraper or sanding and Repair Chart” included on colorant with liquid materials prior stone. RMO Concentrate containers. to blending to ensure that all 5. Further applications may be cement and color particles are Typical Mix Variations include: conducted when equipment can be properly blended and dissolved. moved onto surface without “Pre-Mix” “Patching Mix” disturbing or damaging the finish. Blend one (1) part RMO Concen- Used for patching spalls, cracks, Minimum one (1) hour at 70 trate, with “various” parts of clean and filling uneven or non-level degrees F. (Under direct sunlight water ie. 1:1 or 1:2 for 1/16” to 1/4” surfaces. Similar to a squeegee at less than 1/8” thickness). squeegee mixes and up to 1:40 for mix except that more sand is 8” to 10” thick applications. Patching (Mix) Application added. The mix ratio is: 1 part More water may also be added to 1. Apply patching mix to repair RMO Concentrate, 2 parts water, 2 a 1:1 “Pre-Mix” if a lower slump areas such as spalls, cracks and parts cement, up to 8 parts sand. mix is required. (I.e. a 1:1 Pre-Mix uneven surfaces using a straight- may be thinned to a 1:40 Pre-Mix) “Formless Mix” edge, asphalt lute or squeegee. When more moisture is required For vertical and overhead patches The patching mix must be allowed for Mortar or Overlay mixes made or where a non-slump consistency to flow into the cracked and using RMO Concentrate, add only is desired. deteriorated areas to seek out and "Pre-Mixes" not water. fill all voids. Page 2 of 3 Dynacrete, International Inc. DynaCrete Phone: 1 (250) 752-0198 Concrete & Masonry Products Fax: 1 (250) 752-0197 TECHNICAL SERVICES: CANADA: 1 (866) 722 2483 / 1 (250) 722 2483 / 1-800-661-2444 (Customer Support) DECEMBER 2000 Formless (Mix) Application Technical Data Do not apply when precipitation is 1. Prime areas to be patched with expected within 24 hours following Application Temperatures: RMO Pre-Mix immediately prior to Minimum 50°F to 100°F. completion of application. application. Packaging: Technical Services 2. Apply the mixture of RMO l 1.14 liter/US quart container patching mortar into the repair l 4 liter/US gallon container Assistance is available through area. l 18.9 liter/US 5 gal container local authorized representatives, 3. Apply a brush coat of Pre-Mix l 208 liter/US 55 gallon drums distributers and certified applica- over the patched area and finish Storage Conditions: tors who assist in site evaluations, with a trowel or float to desired Protect from freezing. recommendations, specification finish and texture. Storage Life: writing and job follow-ups. Note: Additional Pre-Mix can be 1 year unopened. Color: Warranty Programs added to increase workability. Milky white concentrate. DynaCrete® RMO Concentrate Spray (Mix) Application Bond Strength: Warranty Programs are available DynaCrete® RMO mixes can be 300 psi to concrete. on request to qualified, “certified” sprayed with hopper guns, rotor- Slant Shear Strengths: applicators, Engineers, Architects stator or diaphragm pump equip- (ASTM C 882) and Specifiers. Only applicators ment designed for pumping and 7 Day A-Slant 2030 psi. approved and certified in the use spraying other cementitious B-Slant 2020 psi. of DynaCrete® RMO Concentrate materials. Compressive Strength: will be permitted to work on jobs Various types of finishes are 6500 psi (ASTM C 39) involving Warranty Programs. achieved by adjusting fluid Rapid Freezing and Thawing: volume, aggregate size and (ASTM C66-90) For further information regarding amount of aggregate. 320 cycles: Passed. Warranty Programs, please Cure Time Limitations contact our Technical Support ® Office. DynaCrete RMO cement mixtures Do not apply DynaCrete® RMO may be opened up to normal Concentrate when surface and traffic after the first 12-24 hours ambient temperatures are and can normally be coated 24 to expected to fall below 50°F within 48 hours after application. 12 hrs. For interior applications or those not in direct sunlight, allow 72 DynaCrete® RMO Concentrate Mixing Ratios hours prior to overcoating. Combine “Pre-Mix” Combine Dry Component Parts Coverage Rates Application Ratios Add to 1 Part of combined "Pre-Mix" Coverage rates vary according to Thickness RMO Maximum design mix, porosity and profile of (inches) Concentrate Water Cement Sand Gravel Gravel Size surface. For example: Five gallons of DynaCrete® RMO Concentrate, 1/32 to 1/16 1 1 1 1 0 \ mixed per standard Squeegee Mix 1/16 to 1/4 1 2 1 2 0 \ 1/4 to 1/2 1 3 1 3 0 \ instructions, will yield 46 gallons of 1 to 2 1 6 1 2 2 1/2 “ mix. 2 to 3 1 9 1 2 2 3/4 “ Using # 60 mesh sand and apply- 3 to 4 1 12 1 2 2 1“ ing the mixture with a "squeegee" 4 to 5 1 16 1 3 2 1 1/2 “ 5 to 6 1 20 1 3 2 1 1/2 " to 2 “ will yield approximately 2,000 6 to 8 1 25 1 3 2 2“ square feet per coat. Finer grades 8 to 10 1 40 1 3 2 2“ of sand can increase the yield. Page 3 of 3 LIMITED WARRANTY Dynacrete warrants its products to be free of manufacturing defects and that they will meet Dynacrete’s current published physical properties when applied in accordance with Dynacrete’s directions. There are no other warranties by Dynacrete of any nature whatsoever, expressed or implied, including any warranty of merchantability of fitness for a particular purpose in connection with this product. Dynacrete Inc. shall not be liable for damages of any sort, including remote or consequential damages, resulting from any claimed breach of any warranty whether expressed or implied, including any warranty of merchantability of fitness for a particular purpose or from any other cause whatsoever.