Patching concrete temperature test

Quikrete concrete patching compound use for nonstructural, small aesthetic repairs to 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 bond strength was then measured using a direct shear test. 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. Four test subjects were cast and stored at a temperature of 50 degrees fahrenheit. If you need to print pages from this book, we recommend downloading it as a pdf. 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. This test method is divided into the following parts. Evaluation of bond strength between overlay and substrate. The evaluation of tests for repair materials used on concrete. Mix equal parts of part 1 and part 2 very thoroughly. Tensile split tests on repaired cube specimens were. Effect of temperature on the heat flow of the tested cement pastes in the. The mix ratio is a piece of cake since each selfcontained kit of frigidcure 500 comes premeasured resin, hardener, and sand.

Founded in 1904 and headquartered in farmington hills, michigan, usa, the american concrete institute is a leading authority and resource worldwide for the. The temperature of the concrete is whats important here, not necessarily the air temperature. 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. U s e m a s c o f o r resurfacing warehouse floors and parking garages. The wide temperature range in this test induces large. Pdf laboratory and field performance of polymermodified cement.

Method for fabricating concrete specimens of overlay and patching. If you use a readymix concrete patch, all you need to add is water. For small patching jobs, use a premixed concrete patch. These concrete patch products can be used to repair and for resurfacing concrete in freezer floor areas where the temperature. Vinyl concrete patcher is made of a special blend of vinyl resin, fine sand and portland cement. It is designed for repairing horizontal concrete surfaces. Air, mix and substrate temperatures should be between 40f and 90f with no rain in the forecast within 24 hours of application.

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. 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. Hot wateryour ready mixed concrete producer will usually have, and use, hot water in the concrete when the weather turns cold.

Table 1 patching material properties property test method requirement. Tests and standards for concrete patching materials. It has strong adhesive properties allowing it to be applied down to a featheredge. At an age of 1 day the 120f concrete was strongest and the 25f concrete was weakest. Many other applications where great gluing strength, fast set time, chemical resistance and impact resistance are needed. Potholes were constructed in concrete blocks with different tilt angles. 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. Evaluation of concrete and mortars for partial depth repairs lrrb. Frigidcure 500 is packaged in simpletouse kits, each of which contains all the necessary concrete patching ingredients. The in situ probe test, when following astm f2170, is a widely accepted moisture test and arguably the most accurate. Cold weather application of waterbased cement products such as our repair mortars the meadowcrete line, the meadowpatch line, meadowplug, speederoc, spectrumrekote tf, the. 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. Without actually placing the products in a test deck, it is difficult to determine the quality of a product by looking at the.

Pdf hydration of cement pastes containing accelerator at. As fresh concrete gets cooler, the hydration reaction slows down. Restoring concrete structures subject to corrosive attack from the sea and heavy weathering revealed the exceptional bond and durability provided by the formulation. Permanent concrete repairs are possible, well, nearly permanent. By the age of 28 days the high temperature concretes were weaker than the 73 concrete. How to patch and resurface concrete steps howtos diy. Asphaltic concrete patching material stockpile storage or. Tensile bond tests are increasing in popularity as. Bond between microwave cured repair and concrete substrate.

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. Step 4b stir concrete patching compound using a margin trowel or putty knife. 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. Vinyl concrete patcher is ideal for making smooth repairs to crack or chipped concrete floors, sidewalks or steps.

Concrete temperature test how we find fresh concrete. This specification describes installation of concrete patching compounds. The other important aspect of curing is temperature the concrete cant be too cold or too hot. Masco is available in regular gray, or in a light gray which closely resembles poured concrete. The observations and testing indicated that the two of the most significant causes for. Evaluation of rapid setting cementbased materials for patching. Early strength of concrete patching materials at low temperatures. Tensile bond testing of concrete repairs springerlink. Method of test for set time of concrete overlay and patching material by gillmore needles. Top n bond by sakrete is a polymer modified repair mortar used for patching, repairing and resurfacing cracked or chipped concrete surfaces. 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. Plasticshrinkage cracks are relatively short cracks that may occur before final finishing on days when wind, a low humidity, and a high temperature.

Unfortunately, this book cant be printed from the openbook. The strengths were determined using the temperature matched curing system. The length of satisfactory stockpiling and the lowest temperature. 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.

Masteremaco t 1061 rapidsetting, concrete repair mortar 50lb bag masteremaco t 1061 is a onecomponent, shrinkagecompensated, cementbased mortar with an extended working time. The in situ probe test, when following astm f2170, is a widely accepted moisture test and arguably the most. Surface moisture evaporates faster than it can be replaced by rising bleed water, causing the surface to shrink. The company does make a repair product for cold weather applications, but the additional material was not tested in the current testing program. 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. Once you have a good, sticky surface for the concrete, simply add water to premixed concrete and patch the crack. Many people think that the new patching material will. Many other applications where great gluing strength, fast set time, chemical resistance and impact resistance are.

Item 721 fiber reinforced polymer patching material. Concrete walk, driveway, or floor patching compound. Its possible to expect a 20 30 year life expectancy from a properly executed repair. Sweep and remove any loose material from the area to be patched. The cylinders were tested for compressive strength at 24 hr after casting. The objective of this study was to evaluate new patching materials to determine their viability. Meg, for best results all materials should be stored between 40f and 80f 24 hours prior to installation. 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. Low temperature concrete patch kit interstate products inc.

Concrete epoxy patch kits floor ramp concrete patch. The repairs were applied at different ambient temperatures of 20, 10, 2 and. Best curing temperatures concrete construction magazine. Remove all dirt, grease, oil and other contaminants that may come in contact with the patching material. 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. Accuflex concrete restorer is designed to cure in approximately 15 minutes when all components involved are at 70 f. The in situ probe test is a testing method to quantify the relative humidity rh of a concrete slab. Interstate products concrete patch epoxy repair kits are as easy as 1,2,3. The trick to a longlasting concrete repair lies in bonding the new material to the old material. Permanent solutions to all types of concrete patching including industrial concrete patch applications. Evaluation of bonding agent application on concrete patch.

Masteremaco n 424 is a general purpose, fastsetting, nonsag cementbased repair mortar for small repairs on vertical, horizontal, and overhead surfaces. Miniature concrete prism test mcpt results for phase 2 mixs 39 table 49. The investigation reported in this paper fonns part of a project sponsored by the new jersey deparunent of. 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. Colder temperatures or higher humidity conditions will retard set times. Development of highperformance rapid patching materials for pavement repair shayan gholami. 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. Ordinary portland cement mixes were based on a standard mix see the. Investigation of spall repair materials for concrete pavement. Low temperature concrete patch cold weather patching kit fast setting concrete patch repair with ability to be used in freezing temperatures during repairs. Use it indoors or outdoors, above or below grade, on both horizontal and vertical surfaces, and in areas that may become totally submerged. 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. As a concrete patching material, as much sand may be added as.

Laboratory evaluation of four rapidsetting concrete. 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 coldweather concrete patching materials. Generic systems for concrete patch repair after emberson. If product has hardened in bag, drop the bag and roll it to return it to a loose, potting soil type consistency. Therefore, this project studied the performance of rapid patching materials for three different aspects.

As the concrete settles, scrape the surface with a trowel. Different patching materials, including hot mix, cold mix and commercial. The results are presented of an investigation of patching materials suitable for winter maintenance operations of bridges and. 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 patching material must meet the requirements of table 1. As the gain in compressive strength of these materials is dependent upon the ambient temperature, this testing was performed over a range of temperatures. 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. Step 5b spread and texture the concrete patch to match the surrounding concrete. Description 820 rapidset patching compound is a readytouse, fasthardening, high strength concrete repairing compound.