Mndot will use a moving average of 4 producer gradations for acceptance. Gradation specifications aggregate gradation table iowa dot standard gradation limits in terms of percent passing. Prequalified aggregate supplier program supplement 1069. Certification and quality aggregate availability in the future. Aggregate various tests, including quality, freezethaw, and alkalisilica reactivity asr are performed on aggregates used for road and bridge construction in illinois. Fine aggregates the fine aggregate, including blended fine aggregate, used in hma surface 4. Odot spec for gravel road installation green city blue lake. Our materials are quality tested throughout production. Historically, aggregate gradation has been controlled by specifications that call out envelopes for individual fractions, typically the coarse aggregate and the fine aggregate. Proper gradation of coarse aggregates is one of the most important factors in producing workable concrete. Absolute volume of calcareous sand in fine aggregate shall be limited to 50 percent.
Cover the item 304 aggregate base with the next layer of pavement before the end of the construction season. T 248 reducing field samples of aggregate to testing size t 304. This is the best way to get the most current odot information. Driveway base, road base, can also be used as a driveway topping in extreme conditions. Software consisting of a series of forms or templates used by the department to. These tests quantify the physical characteristics of each aggregate product from each source. Production of certified aggregate from reclaimed roadways im 210 requirements for furnishing certified. Submit jmf at least 7 days prior to the start of work.
Certified ohio department of transportation odot aggregate sources can be obtained directly from the odot web site. The gradation and physical requirements are detailed in 703. At us aggregates we want to make sure you are getting the best value for your dollar. Jul 17, 2017 gradation of stone and rock is found by astm c6, the test method for sieve analysis of fine and coarse aggregates. Furnish type 1 structural backfill that meets the gradations of items 304, 411, or 617, except. Provide aggregate material for the gradation type shown on the plans type a, type b or type c in accordance with subsection 703. The engineer will reject any aggregate stockpile contaminated with building brick, wood, or plaster. Nominal maximum andor minimum sized stone in mix the nominal size distribution of an aggregate specification is defined as the range of sieve openings through which 100% of the aggregate can. The charts below show typical gradations of various products based on required specifications from agencies and organizations such as state dots, aashto, etc. Do not place crushed stone subgrade on frozen subgrade. With each load delivered to the project, the driver shall present one copy of the plant. The contractors qc technician shall sample the aggregates, place the sample in a proper container and label as specified in section 4c, complete odot sample data sheet form 7344000, and deliver to the pm.
This page contains the vdot specifications that rockydale must comply to meet the requirements of vdot modified acceptance plan. Faa and idaho dot coarse aggregate gradation requirements. Our testing equipment also includes abrasion testing, rock testing, moisture and specific gravity testing equipment. Furnish aggregate for surface treatments in conformance to the type, grade, and surface aggregate classification sac shown on the plans. Changed from submitting at precon, but no later than 30 days prior to start of work. Durin g aggregate pro duction, do not ch ange the appro ved gradation type or source, unless the engineer approves another gradation type or source in writing. Furnish uncontaminated materials of uniform quality throughout that meet the requirements of the plans and specifications. If crushed carbonate stone ccs is used, the material must meet the gradation and physical requirements. Information can be obtained for most aggregate sizes by odot district, county, state, or producersupplier. Provide aggregate base using aggregate material gradation type a specified in odot standard specification section 703. The resources to provide high quality aggregate for any size project.
Provide drainage and maintain the material according to 203. This section allows the use of the following five material types. Furnish the gradation of items 304, 411, or 617, except 0 to 20 percent will be allowed to pass the no. Table 1 test sample sizes for aggregate gradation test shall conform to the following table and. Ensure the fine aggregate portion of the gradation does not exceed a liquid limit of 25. Combined aggregate gradation as a method for mitigating studded tire wear on pccp. Gradlab gds sieve analysis software for the quality control of construction aggregates, soils and asphalt paving materials gradlab gds gradation database system for aggregate quality control, asphalt quality control and soil grading records.
We also have sieve shakers and material sample splitters for most applications. Water for crushed stone subgrade division 2400 304. This does not apply to job mix formulas jmf gradations. Obtain the aggregate gradation by crushing, screening, and blending processes as necessary. This material is used as a base underneath asphalt. Humboldts aggregate testing equipment includes astm testing sieves, as well as air jet sieves and wetwashing sieves. Aggregate is a collective term for sand, gravel and crushed stone mineral materials in their natural or processed state nssga 1991. Mndot guidance for gradation testing and acceptance. The particle size gradation should be uniform from coarse to fine and the upper limit on the very fine. Mndot guidance for gradation testing and acceptance mndot specification 2461.
We focus on providing high quality aggregate for any size project. A sieve analysis or gradation test is a practice or procedure used commonly used in civil engineering to assess the particle size distribution also called gradation of a granular material by allowing the material to pass through a series of sieves of progressively smaller mesh size and weighing the amount of material that is stopped by each sieve as a fraction of the whole mass. If the aggregate base is not covered up, then assume all liability for the contamination, damage and instability for the base, subgrade and underdrains. The odot central materials laboratory will retain quality control of sourceproduct compliance as stated in section 4a.
Details pertaining to this special requirement appear in the special provision section of the contract. Oklahoma the innovative pavement research foundation. The oklahoma department of transportation odot ensures that no person or groups of persons shall, on the grounds of race, color, sex, religion, national origin, age, disability, retaliation or genetic information, be excluded from participation in, be denied the benefits of, or be otherwise subjected to discrimination under any and all programs, services, or activities administered by odot. This work consists of constructing a permeable base course, which includes the following. July 2015 fhwahif15019 tech brief blended aggregates for. Construction and material specifications 2018 updates odot. The material is a high quality, dense graded, crushed aggregate. Hma and pcc mix design gradation limits are determined by the contractor and supplied to the producer on 955s. Steel reinforcement pieces may remain in the stockpile if they can pass the maximum grading sieve size without aid. Department may perform in place gradation testing in areas that are visually. Although the concept of proportioning aggregates may seem very basic at first, it can be very difficult to achieve the required workability. Proper gradation ensures that a sample of aggregates contains all standard fractions of aggregate in required proportion such that the sample contains minimum voids. This work consists of furnishing, placing, and compacting one or more courses of aggregate, including furnishing and incorporating all water required for compacting, on a.
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