Term
| The slump test is applicable to plastic concrete with a maximum size aggregate of _____. |
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Definition
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Term
| When the concrete contains aggregate larger than allowed for the slump test, the large aggregate must be _______. |
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Definition
C. Removed by passing concrete through a 1½in. wet-sieve |
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Term
| The mold for making the slump test is in the shape of ______. |
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Definition
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Term
| The height of the slump mold is ____. |
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Definition
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Term
| The interior surface of the slump mold is allowed to have minor irregularities. True or False? |
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Definition
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Term
| For use in the slump test, the end or both ends of the tamping rod must be ___________. |
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Definition
5/8 in. rounded to hemispherical tip |
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Term
| The sample of concrete for use in making the slump test must be obtained in accordance with Practice ________. |
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Definition
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Term
| The slump mold should be in a dry condition before beginning the test. True or False? |
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Definition
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Term
The surface on which the slump mold will be placed must be ______.
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Definition
Rigid, flat, moist, nonabsorbent, and free of vibration |
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Term
| The slump mold is filled within ____ layers. |
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Definition
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Term
| Each layer should fill approximately ____ of the volume of the mold. |
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Definition
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Term
The approximate depth (in vertical distance) after placing the first layer is 2 5/8in, and the second layer is 6 1/8in.
True or False? |
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Definition
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Term
| What is the specified number of rodding's for each layer? |
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Definition
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Term
| How deep should the tamping rod penetrate into each layer? |
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Definition
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Term
| When rodding the bottom layer the tamping rod must be ______ to uniformly distribute the strokes. |
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Definition
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Term
| What must be done if the concrete drops below the top of the slump mold while the top layer is being rodded? |
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Definition
More concrete must be added |
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Term
| Prior to lifting the mold concrete must be removed from the ____. |
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Definition
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Term
After the final rodding the sides of the slump mold should be tapped lightly with the tamping rod.
True or False? |
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Definition
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Term
| When raising the slump mold it should not be rotated or twisted. True or False? |
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Definition
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Term
| How much time is allowed for lifting the slump mold? |
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Definition
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Term
| The measurement for slump is made from the top of the mold to what point of the concrete specimen? |
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Definition
displaced original center of the top surface of the specimen |
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Term
| The slump of the mold is measured and reported to the nearest ___. |
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Definition
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Term
| How much time is allowed to conduct the slump test from beginning to completion? |
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Definition
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