sample as described in paragraph 4.2.1.1 above. 4.2.2 Sampling with pick and shovel 4.2.2.1 From the sides of a stockpile Using shovels, dig a groove from the top to the bottom of the stockpile. (See note 6.2) Remove all the material that has collected at the bottom of the groove as a …
Oct 31, 2013· aggregates (CA and FA) in accordance with AASHTO T 2-91. Sampling from conveyor belts, transport units, roadways, and stockpiles is covered. Apparatus • Shovels or scoops, or both • Sampling tubes of acceptable dimensions • Mechanical sampling systems: normally a permanently attached device that allows a
4 Sampling Fine Aggregate from Stockpile Using Sampling Tube D75D75M 19 4 from INGENERIA 0545614 at Pontificia Universidad ólica del Ecuador
The aggregate sample is the total material from all holes combined and must meet the minimum original sample size requirement. SAMPLING AGGREGATE FROM STOCKPILE BUILT USING CONVEYORS FIGURE 5 3.7.2 Sampling from Stockpile Built Using Haul Trucks Samples of stockpiled aggregate are obtained while the stockpile is being built using haul trucks as ...
4.3.3 Sampling from Stockpiles or Transportation Units— Avoid sampling coarse aggregate or mixed coarse and fine aggregate from stockpiles or transportation units whenever possible, particularly when the sampling is done for the purpose of determining aggregate properties that may be dependent upon the grading of the sample. If circumstances
The procedure below describes sampling DSA from a stockpile for aggregate testing prior to placement. Sampling from a stockpile should always be done using a loader to separate out a small sampling pile. As the sampler, it is your job to witness the sample pile(s) being created from the DSA stockpile that will be used on the job.
sample of aggregate that is truly representative of the nature and condition of the aggregate in the stockpile, bin or transfer point is called aggregate sampling. ASTM D75 is the standard practice for sampling aggregates. The size of the sample obtained in the field is rather large to ensure that it is representative. The test portion
Jan 05, 2015· Aggregate Sampling from Stockpile Aggregate Sampling from Stockpile. Using a front end-loader, dig into the stockpile and set aside small pile of …
Aggregate Approval Instructions for Mines and Terminals Aggregate Handling and Storage Procedures (Video) Laboratory and Field Testing Services Sample Delivery Process. Programs. Stockpile Sampling [XLS - 260KB] Listings. Aggregate Pit Proctor Report Aggregate Source Listings Aggregate Products from Mines or Terminals
SAMPLING OF AGGREGATE MATERIALS 1. SCOPE 1.1 The purpose of these guidelines is to outline procedures and requirements for sampling of granular, coarse, and fine aggregate materials for quality assurance testing. 2. GENERAL 2.1 Whether stockpile, delivery, or road sampling has been chosen, the procedure for obtaining a sample must be strictly ...
Jan 17, 2019· Collect a representative aggregate sample from the stockpile in accordance with ASTM D75, "Standard Practice for Sampling Aggregates." The minimum aggregate sample weight needed for the test depends on the nominal maximum size aggregate of the aggregate being tested. These minimum sample weights are outlined in "Table 1: Sample Size for ...
Batching Samples • Fractionate each aggregate to No. 8 sieve –Recommended by Asphalt Institute. We do not like this method due to potential for fines to segregate • Fractionate each aggregate to No. 200 –If stockpile aggregates do not match what quarry expects to …
• Build stockpile with fixed height conveyors • Build stockpiles with trucks, loaders or dozers. 15 Segregation Segregation - Stacker Conveyor. 16 Segregation Segregation - Size and Shape •Size ranges •Coarse ... • Changes in the aggregate properties will cause changes
STOCKPILE SAMPLING Coarse Aggregate Stockpiles Coarse aggregates are recommended to be sampled using ITM 207. A summary of the procedure includes the following: 1) Locate the area of the stockpile from which hauling will begin. 2) Using a front-end loader, dig into the stockpile and set aside a …
figure 24: typical sample patterns – left show distribution of sampling sites through the stockpile if ten sample points are taken from a radial stacker stockpile- right shows distribution of sampling sites through the stockpile if
Sampling during production, during transportation, and after arrival at the job are considered in sequence. This includes sampling from conveyor belt, bins, chutes, freight cars, barges, and stockpiles with reference to the A.S.T.M. Tentative Methods of Sampling Stone, Slag, Gravel, Sand and Stone Block for Use as Highway Materials (D 75 - 46T).
When sampling from a stockpile, you must obtain your composite sample from at least _____ elevations/locations of the stockpile. 3. When using a sampling tube on fine aggregates, you must obtain portions from _____ different locations. 5 or more. You must sample from a minimum of _____ locations when sampling from a conveyor belt. ...
Determine aggregate acceptance before incorporation into the work based on samples taken from stockpiles. Furnish gravel used under Item 304 that is crushed …
SAMPLING AGGREGATE, FLEXIBLE BASE, AND STONE RIPRAP TXDOT DESIGNATION: TEX-400-A MATERIALS & TESTS DIVISION 3 – 5 EFFECTIVE DATE: APRIL 2021 3.2.16 Repeat Section 3.2.4 to 3.2.15 for each additional location as determined from Section 3.2.3. 3.3 Sampling procedure for aggregate from completed stockpiles using a shovel. 3.3.1 Use this procedure to sample completed stockpiles …
By following ASTM D75 for aggregate sampling and ASTM C702 for sample reduction a smaller size of aggregate test sample that is truly representative of the whole stockpile can be obtained for aggregate testing. Aggregate sample reduction to maintain the characteristics of the aggregate lot is equally as important as the tests conducted on the ...
the finished product conveyor belt or stockpile. Obtaining samples from the belt discharge is acceptable if the full production stream can be obtained with sufficient rapidity and safety. Production samples are taken during aggregate crushing and stockpile operations and can only be conducted or witnessed by HTCP certified QC personal.
Securing Samples aggregate or mixed coarse and fine aggregate from 4.1 General—Where practicable, samples to be stockpiles or transportation units whenever possible, tested for quality shall be obtained from the finished particularly when the sampling is done for the product.
A stockpile of coarse aggregates was sampled to experimentally measure its specific gravity. The total mass of the moist aggregate sample measured 5319g. After drying, the same sample measured 5251 g, while its submerged mass was determined with 3285 g, …
AGGREGATE WAQTC AASHTO T 2 T2_short Aggregate 1-1 October 2011 SAMPLING OF AGGREGATES FOP FOR AASHTO T 2 (11) Scope This procedure covers sampling of coarse, fine, or a combination of coarse and fine aggregates (CA and FA) in accordance with AASHTO T 2. Sampling from conveyor belts, transport units, roadways, and stockpiles is covered. Apparatus
In sampling stockpiles of fine aggregate (3/8 in. (minus 9.5 mm)), the outer layer, which may have become segregated, should be removed and the sample taken from the material beneath. The use of sampling tubes has proven to be satisfactory. Sampling tubes approximately 1 …
Ideally, any sample taken from any area of the stockpile should contain a representative sampling of the complete range of sizes. Degradation. The breaking apart of the aggregate particles.
When sampling aggregate base material, the sample is obtained from a stockpile, conveyor belt, or any other location approved by the Department according to established procedures and taken to the laboratory. When sampling aggregate base material, follow the sampling procedures listed in Exhibit C.
According to the standard, a sample of coarse aggregates is obtained by combining portions taken from the Conveyer Belt, Storage Bin, Truck, Rail Car or Stockpile. In this research, three samples were collected from stockpile and one from conveyer belt as shown in Figure 2. Figure 2: Samples Collection 2.2 Testing The samples collected from quarries were transported to laboratories for ...