Concrete Technology Sheet 9
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1) Question.
The coefficient of shrinkage for high grade concrete for pretensioned work is
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2) Question.
Prestress loss due to friction occurs
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3) Question.
Which of the following losses of prestress occur only in pretensioning and not in post-tensioning
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4) Question.
Most common method of prestressing used for factory production is
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5) Question.
Normally prestressing wires are arranged in the
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6) Question.
The purpose of reinforcement in prestressed concrete is
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7) Question.
The creep strains are
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8) Question.
For bars in tension, a standard hook has an anchorage value equivalent to a straight length of
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9) Question.
The development length of bars of diameter ¢ , as per IS: 456-1978 is given by
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10) Question.
According to the IS: 456-1978, the maximum strain in concrete at the outermost compression fibre in the limit state design of flexural member is
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11) Question.
The bulk density of aggregates depends upon its -
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12) Question.
The most useless aggregate is, whose surface texture is -
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13) Question.
The construction joints are generally provided in concrete -
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14) Question.
The construction joints in cement concrete -
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15) Question.
In concrete walls, construction joints should be provided at the -
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16) Question.
Vertical sides of columns may be stripped after -
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17) Question.
Under normal circumstances, the beam soffits may be removed after -
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18) Question.
Proper curing of cement concrete, is good for its -
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19) Question.
After the curing of 28 days, the concrete gains strength upto -
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20) Question.
The object of curing is to -
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