Materials science

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Uploaded: 14.07.2016
Content: Материаловедение.doc (45,5 kB)
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Description

Task No. 1
To define strength on a prism bend with square section if an ultimate load of 32 kN, flight between support of 10 cm, lengths of a prism of 15 cm, porosity of 20%, weight 180 гр., and true density is 3,75 g/cm3.
Task No. 2
The clay weight from which form a brick has humidity of 20%. Laboratory researches have shown that the general shrinkage when drying and roasting makes 12%. What sizes of a mouthpiece of a tape press (i.e. the brick raw sizes) have to be that the ready brick had the sizes conforming to requirements of the standard?
Task No. 3
To pick up structure of a keramzitobeton with a durability of 5 MPas, with a density of 1000 kg/m3 and mobility of concrete mix 4-8 sec. Materials: M400 portlandtsement, ceramsite gravel of fraction of 5-20 mm, with a bulk density of 450 kg/m3 and density of grain of expanded clay of 0,89 kg/l, the airinvolving START additive.

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Task No. 1
To define strength on a prism bend with square section if an ultimate load of 32 kN, flight between support of 10 cm, lengths of a prism of 15 cm, porosity of 20%, weight 180 гр., and true density is 3,75 g/cm3.
Task No. 2
The clay weight from which form a brick has humidity of 20%. Laboratory researches have shown that the general shrinkage when drying and roasting makes 12%. What sizes of a mouthpiece of a tape press (i.e. the brick raw sizes) have to be that the ready brick had the sizes conforming to requirements of the standard?
Task No. 3
To pick up structure of a keramzitobeton with a durability of 5 MPas, with a density of 1000 kg/m3 and mobility of concrete mix 4-8 sec. Materials: M400 portlandtsement, ceramsite gravel of fraction of 5-20 mm, with a bulk density of 450 kg/m3 and density of grain of expanded clay of 0,89 kg/l, the airinvolving START additive.

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