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Sampling Concrete from a Revolving Drum Truck Mixer

2018-4-2  Construction projects were selected to provide a range of concrete mixture specifications, site conditions, and target property values. Findings indicate that it is not necessary to collect a sample of two or more portions from a revolving drum truck mixer. Rather, a single portion sample of concrete is sufficient for acceptance testing purposes.

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ASTM C172 - Sampling Fresh Concrete and Oral Exam SI

Sampling, according to ASTM standards, must be done in intervals from the middle portion of the batch of concrete. If sampling from a stationary mixer, revolving drum mixer (i.e. mixer truck) or agitator, or a continuous mixer, then two or more samples must be taken at regularly spaced intervals from the middle of the batch and mixed together ...

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3 Concrete Job Control - IN.gov

2021-8-20  When sampling from a revolving drum truck mixer (transit-mix truck) or an agitator truck, the sample may be obtained by directing the chute to a wheelbarrow (Figure 3-4) or to a receptacle on the ground near the testing site. The sample is not obtained from the chute of the truck or from the discharge stream of the concrete when filling the ...

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Sampling Procedures

Sampling Procedures. Sampling (or obtaining) concrete for the slump test should be accomplished according to ASTM C 172. In this TRAMAN, only the procedure of sampling from a revolving drum truck mixer (TM) or agitator is discussed. If you should ever

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METHOD OF SAMPLING FRESH CONCRETE

2019-10-3  2. Sampling from paving mixers and from haul vehicles without agitation: Discharge the concrete onto the subgrade and collect the sample from at least five different portions of the pile. Samples may be obtained after concrete has passed through a spreader box. 3. Sampling from revolving drum truck mixers or agitators: Sample from two or more

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SD 402 Method of Sampling Fresh Concrete 2.

2020-8-31  batch after 5 gallons ± of concrete has been discharged from the mixing drum. NOTE: The sampling of the concrete for drilled shafts shall be at the beginning of the batch after 5 gallons ± of concrete has been discharged from the mixing drum. 2. Sampling may be in accordance with paragraph 3.1.C. C. Dump trucks or open top truck mixers ...

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ASTM C172/C172M Study Questions Flashcards Quizlet

When sampling from a revolving drum truck mixer, sample the concrete by collecting _____ or more portions take at regularly spaced intervals during discharge of the middle portion of the batch. Two Concrete samples from a truck mixer must be obtained before any water or admixtures are added to the mixer at the job site.

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Concrete Flashcards Quizlet

When sampling from a revolving drum truck mixer, sample the concrete by collecting ____ or more portions take at regularly spaced intervals during discharge of the middle portion of the batch 2 Concrete samples from a truck mixer must be obtained before any water or

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Design and Calculation of a Concrete Mixer (100 kg)

2019-7-1  Batch mixers are widely used machines for concrete mixing. Concrete mix obtained by this mixer is collected batch by batch and time by time. So, it is called as batch mixer. In general, batch concrete mixers are two types; a. Drum type concrete mixers b. Pan type concrete mixers . 1.1. Drum Type Concrete Mixers

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"Sampling Concrete from a Revolving Drum Truck Mixer"

Construction projects were selected to provide a range of concrete mixture specifications, site conditions, and target property values. Findings indicate that it is not necessary to collect a sample of two or more portions from a revolving drum truck mixer. Rather, a single portion sample of concrete is sufficient for acceptance testing purposes.

Get price

ALDOT-328-82 RAPID METHOD OF SAMPLING FRESH

2014-2-19  RAPID METHOD OF SAMPLING FRESH CONCRETE FROM REVOLVING DRUM TRUCK MIXERS OR AGITATORS 1. Scope 1.1. This method describes a procedure for obtaining early samples of fresh concrete from truck mixers or agitators. The samples obtained are considered adequate for determining compliance with air content, slump specifications and temperature ...

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One Thing: Sampling Fresh Concrete - National Precast ...

2019-3-14  Collecting the composite sample. Whether sampling from a stationary mixer, revolving drum truck mixer or continuous mixer, collect portions of fresh concrete for the composite sample only after all raw materials (including water, admixtures and fibers)

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3 Concrete Job Control - IN.gov

2021-8-20  When sampling from a revolving drum truck mixer (transit-mix truck) or an agitator truck, the sample may be obtained by directing the chute to a wheelbarrow (Figure 3-4) or to a receptacle on the ground near the testing site. The sample is not obtained from the chute of the truck or from the discharge stream of the concrete when filling the ...

Get price

Sampling Procedures

Sampling Procedures. Sampling (or obtaining) concrete for the slump test should be accomplished according to ASTM C 172. In this TRAMAN, only the procedure of sampling from a revolving drum truck mixer (TM) or agitator is discussed. If you should ever

Get price

METHOD OF SAMPLING FRESH CONCRETE

2019-10-3  2. Sampling from paving mixers and from haul vehicles without agitation: Discharge the concrete onto the subgrade and collect the sample from at least five different portions of the pile. Samples may be obtained after concrete has passed through a spreader box. 3. Sampling from revolving drum truck mixers or agitators: Sample from two or more

Get price

SD 402 Method of Sampling Fresh Concrete 2.

2020-8-31  batch after 5 gallons ± of concrete has been discharged from the mixing drum. NOTE: The sampling of the concrete for drilled shafts shall be at the beginning of the batch after 5 gallons ± of concrete has been discharged from the mixing drum. 2. Sampling may be in accordance with paragraph 3.1.C. C. Dump trucks or open top truck mixers ...

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SLUMP TESTS - tpub

Sampling Procedures Sampling (or obtaining) concrete for the slump test should be accomplished accord-ing to ASTM C 172. In this TRAMAN, only the procedure of sampling from a revolving drum truck mixer (TM) or agitator is discussed. If you should ever need to sample from a paving mixer, open-top truck mixer, or other type of equipment, be sure to refer to the most recent ASTM C 172.

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ACI Concrete Field Testing Technician - Grade I Flashcards ...

When sampling from a revolving drum truck mixer, sample the concrete by collecting _____ or more portions take at regularly spaced intervals during discharge of the middle portion of the batch. Two True/ False: Concrete samples from a truck mixer must be obtained before any water or admixtures are added to the mixer at the job site.

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Job-Task Analysis (JTA) for ACI Certification of Concrete ...

2019-12-2  • Know and perform (or describe verbally) sampling procedures from stationary mixers, paving mixers, revolving drum truck mixers or agitators, and continuous mixers • Know and perform (or describe verbally) the procedure for removal of large maximum size aggregate ASTM C143/C143M, Standard Test Method for Slump of Hydraulic-Cement Concrete

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ALDOT-328-82 RAPID METHOD OF SAMPLING FRESH

2014-2-19  RAPID METHOD OF SAMPLING FRESH CONCRETE FROM REVOLVING DRUM TRUCK MIXERS OR AGITATORS 1. Scope 1.1. This method describes a procedure for obtaining early samples of fresh concrete from truck mixers or agitators. The samples obtained are considered adequate for determining compliance with air content, slump specifications and temperature ...

Get price

METHOD OF SAMPLING FRESH CONCRETE

2019-10-3  2. Sampling from paving mixers and from haul vehicles without agitation: Discharge the concrete onto the subgrade and collect the sample from at least five different portions of the pile. Samples may be obtained after concrete has passed through a spreader box. 3. Sampling from revolving drum truck mixers or agitators: Sample from two or more

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Concrete Field Testing Technician Study Guide

2021-1-20  11. Concrete samples from a truck mixer must be obtained before any water or admixtures are added to the mixer at the job site. True or False (Section 5.2.3) 12. Collection of a sample of concrete from a revolving drum truck mixer includes obtaining at least _____ portions taken at

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INSERT TAB WAQTC - Oregon

2013-10-31  Sampling from revolving drum truck mixers or agitators Obtain the sample after a minimum of 1/2 m 3 (1/2 yd ) of concrete has been discharged. Obtain samples after all of the water has been added to the mixer. Do not obtain samples from the very first or last portions of the batch discharge.

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ACI Concrete Field Testing Technician - Grade I Flashcards ...

When sampling from a revolving drum truck mixer, sample the concrete by collecting _____ or more portions take at regularly spaced intervals during discharge of the middle portion of the batch. Two True/ False: Concrete samples from a truck mixer must be obtained before any water or admixtures are added to the mixer at the job site.

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METHOD OF TEST FOR SAMPLING FRESH CONCRETE

2019-11-20  METHOD OF TEST FOR SAMPLING FRESH CONCRETE . A. SCOPE. This test method describes the procedure for obtaining samples of freshly mixed concrete from stationary and paving mixers, truck mixers, agitators or dump trucks, and forms and subgrade. B. REFERENCES California Test 518 – Unit Weight of Fresh Concrete

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SD 402 Method of Sampling Fresh Concrete 2.

2020-8-31  batch after 5 gallons ± of concrete has been discharged from the mixing drum. NOTE: The sampling of the concrete for drilled shafts shall be at the beginning of the batch after 5 gallons ± of concrete has been discharged from the mixing drum. 2. Sampling may be in accordance with paragraph 3.1.C. C. Dump trucks or open top truck mixers ...

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(PDF) Print › ACI Concrete Field Testing Technician- Grade ...

Concrete samples from a truck mixer must be obtained sieving the concrete.: 2 in. [50 mm] before any water or admixtures are added to the mixer 2. According to ASTM C1064, what is one reason to take the at the job site. ... When sampling from a revolving drum truck mixer, top of the mold at all times concrete must be sampled at a minimum of ...

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Job-Task Analysis (JTA) for ACI Certification of Concrete ...

2019-12-2  • Know and perform (or describe verbally) sampling procedures from stationary mixers, paving mixers, revolving drum truck mixers or agitators, and continuous mixers • Know and perform (or describe verbally) the procedure for removal of large maximum size aggregate ASTM C143/C143M, Standard Test Method for Slump of Hydraulic-Cement Concrete

Get price

Design and Calculation of a Concrete Mixer (100 kg)

2019-7-1  Batch mixers are widely used machines for concrete mixing. Concrete mix obtained by this mixer is collected batch by batch and time by time. So, it is called as batch mixer. In general, batch concrete mixers are two types; a. Drum type concrete mixers b. Pan type concrete mixers . 1.1. Drum Type Concrete Mixers

Get price
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