Masco is available in regular gray, or in a light gray which closely resembles poured concrete. As the gain in compressive strength of these materials is dependent upon the ambient temperature, this testing was performed over a range of temperatures. Permanent solutions to all types of concrete patching including industrial concrete patch applications, repairing and resurfacing needs as well as a versatile product line featuring concrete floor patch, wall, overhead, indoor, outdoor and more patching applications. As a concrete patching material, as much sand may be added as. In cold environment, the cure time depends on the temperature of the material, the temperature of the sand or aggregate if used, the volume of the repair, and the temperature of the concrete. The results are presented of an investigation of patching materials suitable for winter maintenance operations of bridges and. The bond strength was then measured using a direct shear test. Different patching materials, including hot mix, cold mix and commercial.
Remove all dirt, grease, oil and other contaminants that may come in contact with the patching material. Development of highperformance rapid patching materials for pavement repair shayan gholami. The strengths were determined using the temperature matched curing system. The cylinders were tested for compressive strength at 24 hr after casting. For small patching jobs, use a premixed concrete patch. Evaluation of coldweather concrete patching materials.
At an age of 1 day the 120f concrete was strongest and the 25f concrete was weakest. Accuflex concrete restorer is designed to cure in approximately 15 minutes when all components involved are at 70 f. The in situ probe test, when following astm f2170, is a widely accepted moisture test and arguably the most. Effect of temperature on the heat flow of the tested cement pastes in the. Masteremaco n 424 is a general purpose, fastsetting, nonsag cementbased repair mortar for small repairs on vertical, horizontal, and overhead surfaces. The investigation reported in this paper fonns part of a project sponsored by the new jersey deparunent of.
Use it indoors or outdoors, above or below grade, on both horizontal and vertical surfaces, and in areas that may become totally submerged. Masteremaco t 1061 rapidsetting, concrete repair mortar 50lb bag masteremaco t 1061 is a onecomponent, shrinkagecompensated, cementbased mortar with an extended working time. Feb 10, 2012 top n bond by sakrete is a polymer modified repair mortar used for patching, repairing and resurfacing cracked or chipped concrete surfaces. Without actually placing the products in a test deck, it is difficult to determine the quality of a product by looking at the. Concrete epoxy patch kits floor ramp concrete patch. As the concrete settles, scrape the surface with a trowel. Unfortunately, this book cant be printed from the openbook. Low temperature concrete patch cold weather patching kit fast setting concrete patch repair with ability to be used in freezing temperatures during repairs. Method of test for compressive strength and flow of overlay and patching materials using twoinch cube specimens. Most producers will try to have the concrete be at least 65f when it leaves the plant, which is generally good enough depending on air temperature and thickness of the concrete element. Investigation of spall repair materials for concrete pavement. U s e m a s c o f o r resurfacing warehouse floors and parking garages. Mix equal parts of part 1 and part 2 very thoroughly.
Cold weather application of waterbased cement products such as our repair mortars the meadowcrete line, the meadowpatch line, meadowplug, speederoc, spectrumrekote tf, the futura line and pargeall af or our nonshrink cementitious grouts cg86, cg86 ne, 58810k and 1428hp can be challenging to properly accomplish. Once you have a good, sticky surface for the concrete, simply add water to premixed concrete and patch the crack. Concrete walk, driveway, or floor patching compound. The observations and testing indicated that the two of the most significant causes for.
These concrete patch products can be used to repair and for resurfacing concrete in freezer floor areas where the temperature. Item 721 fiber reinforced polymer patching material. The repairs were applied at different ambient temperatures of 20, 10, 2 and. Four test subjects were cast and stored at a temperature of 50 degrees fahrenheit. Patching concrete floors, shipping docks, ramps, steps, sidewalks, driveways, and aprons.
By 7 days the high temperature cured concretes had no more strength than the 73 concrete or even less. Cement, concrete and mortar 66 sands and aggregates 28 patching compounds 102 concrete reinforcement materials 37 concrete 1 lime 2 moulds and form tubes 32 driveway repair 10. Tensile bond testing of concrete repairs springerlink. Vinyl concrete patcher is made of a special blend of vinyl resin, fine sand and portland cement. It has strong adhesive properties allowing it to be applied down to a featheredge. Best curing temperatures concrete construction magazine. Pdf hydration of cement pastes containing accelerator at. The patching material must meet the requirements of table 1. Table 1 patching material properties property test method requirement. As fresh concrete gets cooler, the hydration reaction slows down. Founded in 1904 and headquartered in farmington hills, michigan, usa, the american concrete institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensusbased standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete design.
Hot wateryour ready mixed concrete producer will usually have, and use, hot water in the concrete when the weather turns cold. Concrete temperature test how we find fresh concrete. The evaluation of tests for repair materials used on concrete. The investigation reported in this paper fonns part of a project sponsored by the new jersey deparunent of transportation and fhwa aimed at identifying and evaluating concrete patching materials suitable for cold weather application. The mix ratio is a piece of cake since each selfcontained kit of frigidcure 500 comes premeasured resin, hardener, and sand. Laboratory evaluation of four rapidsetting concrete. How to patch and resurface concrete steps howtos diy. Plasticshrinkage cracks are relatively short cracks that may occur before final finishing on days when wind, a low humidity, and a high temperature. It is designed for repairing horizontal concrete surfaces. Step 4b stir concrete patching compound using a margin trowel or putty knife. The trick to a longlasting concrete repair lies in bonding the new material to the old material. The temperature of the concrete is whats important here, not necessarily the air temperature. Vinyl concrete patcher is ideal for making smooth repairs to crack or chipped concrete floors, sidewalks or steps. The length of satisfactory stockpiling and the lowest temperature at which it can be used will vary according to the type and grade of asphaltic binder specified.
The binder may be liquid asphalt or polymer based, unless otherwise shown on the plans, and may be provided separately or premixed with the other components of the patching. The objective of this study was to evaluate new patching materials to determine their viability. Many other applications where great gluing strength, fast set time, chemical resistance and impact resistance are. Many other applications where great gluing strength, fast set time, chemical resistance and impact resistance are needed. Therefore, this project studied the performance of rapid patching materials for three different aspects. Description 820 rapidset patching compound is a readytouse, fasthardening, high strength concrete repairing compound. Founded in 1904 and headquartered in farmington hills, michigan, usa, the american concrete institute is a leading authority and resource worldwide for the. Permanent solutions to all types of concrete patching including industrial concrete patch applications. Evaluation of rapid setting cementbased materials for patching. This test method is divided into the following parts. Low temperature concrete patch kit interstate products inc. By the age of 28 days the high temperature concretes were weaker than the 73 concrete. Evaluation of bond strength between overlay and substrate. Meg, for best results all materials should be stored between 40f and 80f 24 hours prior to installation.
Cold weather application of waterbased cement products such as our repair mortars the meadowcrete line, the meadowpatch line, meadowplug, speederoc, spectrumrekote tf, the. Method for fabricating concrete specimens of overlay and patching. The in situ probe test, when following astm f2170, is a widely accepted moisture test and arguably the most accurate. If you use a readymix concrete patch, all you need to add is water. Restoring concrete structures subject to corrosive attack from the sea and heavy weathering revealed the exceptional bond and durability provided by the formulation. Its possible to expect a 20 30 year life expectancy from a properly executed repair. The wide temperature range in this test induces large. Best practice guidelines for concrete placement planning, field testing, and sample collection page 1 september 2014 1 executive summary concrete is the most widely used construction material and can be used in almost any environment for a multitude of applications but successful concrete construction begins with careful planning. Generic systems for concrete patch repair after emberson. Tensile bond tests are increasing in popularity as. The mixture must remain workable in the stockpile for 6 months from the day of delivery and have good adhesion to wet surfaces. Bond strength, pulloff test, slant shear test, concrete repair.
These concrete patch products can be used to repair and for resurfacing concrete in freezer floor areas where the temperature must be below freezing point during and after application. If you need to print pages from this book, we recommend downloading it as a pdf. Without actually placing the products in a test deck, it is difficult to determine the quality of a product by looking at the product literature. Tests and standards for concrete patching materials. Quikrete concrete patching compound use for nonstructural, small aesthetic repairs to concrete. Surface moisture evaporates faster than it can be replaced by rising bleed water, causing the surface to shrink. Cement, concrete and mortar 66 sands and aggregates 28 patching compounds 102 concrete reinforcement materials 37 concrete 1 lime 2 moulds and form tubes 32 driveway repair 10 more ways to shop. Wherever the words approved by, equivalent or similar phrases are used in this specification, they shall be understood to mean that the material, process or item referred to shall require the written approval of the patching system manufacturer. The in situ probe test is a testing method to quantify the relative humidity rh of a concrete slab. Miniature concrete prism test mcpt results for phase 2 mixs 39 table 49. Method of test for set time of concrete overlay and patching material by gillmore needles.
Permanent concrete repairs are possible, well, nearly permanent. Potholes were constructed in concrete blocks with different tilt angles. Top n bond by sakrete is a polymer modified repair mortar used for patching, repairing and resurfacing cracked or chipped concrete surfaces. This specification describes installation of concrete patching compounds. Best practice guidelines for concrete placement planning, field testing, and sample collection page 1 september 2014 1 executive summary concrete is the most widely used construction material and. The length of satisfactory stockpiling and the lowest temperature. Many people think that the new patching material will.
Evaluation of bonding agent application on concrete patch. The company does make a repair product for cold weather applications, but the additional material was not tested in the current testing program. Plasticshrinkage cracks are relatively short cracks that may occur before final finishing on days when wind, a low humidity, and a high temperature occur. Evaluation of concrete and mortars for partial depth repairs lrrb. The binder may be liquid asphalt or polymer based, unless otherwise shown on the plans, and may be provided separately or premixed with the other components of the patching material. The other important aspect of curing is temperature the concrete cant be too cold or too hot.
Step 5b spread and texture the concrete patch to match the surrounding concrete. Asphaltic concrete patching material stockpile storage or. Interstate products concrete patch epoxy repair kits are as easy as 1,2,3. Colder temperatures or higher humidity conditions will retard set times. Bond between microwave cured repair and concrete substrate. Early strength of concrete patching materials at low temperatures. In cold environment, the cure time depends on the temperature of the material, the temperature of the sand or aggregate if used, the volume of the repair, and the temperature. If product has hardened in bag, drop the bag and roll it to return it to a loose, potting soil type consistency. Pdf laboratory and field performance of polymermodified cement. Ordinary portland cement mixes were based on a standard mix see the. Air, mix and substrate temperatures should be between 40f and 90f with no rain in the forecast within 24 hours of application.
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