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Concrete Manual Tests: Verification of Water in Fresh Concrete by Use of a Microwave Oven Mobile App

DOT has incorporated the use of AASHTO TP23-93 to verify the Contractor’s water in concrete pavements. This test uses a microwave oven to drive the water out of fresh concrete. Mn/DOT has an incentive/disincentive program for the water-cementitious (w/c) ratio. This incentive is based on the Contractor’s actual batch weights and is verified using the microwave. Use the Concrete Manual Tests: Verification of Water in Fresh Concrete by Use of a Microwave Oven mobile app to complete this verification process.

  • Lendlease
  • The Cooperative
  • PG&E
  • Red Bull
  • Mirvac

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Take a peek inside the Concrete Manual Tests: Verification of Water in Fresh Concrete by Use of a Microwave Oven Mobile App

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    VERIFICATION OF WATER IN FRESH CONCRETE BY USE OF A MICROWAVE OVEN

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    Mn/DOT has incorporated the use of AASHTO TP23-93 to verify the Contractor’s water in concrete pa...

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    Knowing the weight of the fresh concrete and the weight of the dried concrete, the total water co...

  • Ico statictext

    There are many variables in this procedure.

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    Moisture tests and microwave oven testing are performed by the Agency.

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    A.

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    B.

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    For determination of water/cementitious ratio incentive/disincentive, a lot represents one day of...

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    Paving includes integrant curb and gutter and curb and gutter placed with the same mixture as pav...

  • Ico checkbox

    A change in mix design requires beginning a new lot.

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    Changes in mix design for small quantities such as hand work and high early mixes greater than 35...

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    All samples for testing are taken in a random manner according to the prescribed sampling rate.

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    A minimum of 2 tests and a maximum of 4 tests are required per day.

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    Gradation testing is not required when production is less than 250 cubic meters (cubic yards) per...

  • Ico checkbox

    If less than 3 sublots are produced in a day before the new mix design is initiated, the sublots ...

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    On the first day of production or whenever the mix design is changed prior to the production of 3...

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    On the last day of paving or on the last day of using a specific mix design, the concrete involve...

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