Test
Materials test
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Preguntas del test (42)
1Which of the following tests is carried out AFTER the concrete has cured
- ASlump test
- BCube test
- CCompacting factor test
- DFlow table test
2Depending on slow or rapid solidification igneous rock can be
- APlutonic, Tectonic
- BTectonic, Volcanic
- CPlutonic, Volcanic
- DTechtonic, Balsamic
3Under intense heat/ pressure: Clay metamorphosed to Slate
- ATrue
- BFalse
4Under intense heat/ pressure: Marble metaphosed to limestone
- ATrue
- BFalse
5Under intense heat/ pressure: Sandstone metamorphosed to granite
- ATrue
- BFalse
6Deterioration of stone is cause by?
- ASoluble salt action, Frost action
- BSoluble salt action, Acid rain, Devitrification
- CSoluble salt action, Devitrification
- DSoluble salt action, Acid rain, Frost action
7Which is NOT part of the 'Triple bottom line'
- ASocial
- BEconomic
- CEnvironmental
- DDevelopmental
8A working definition definition for sustainable development was agreed internationaly in 1987 in the UN report 'Our Common Future' also known as:
- ABrundgtland Report
- BSustainable development report
- CMinority report
- DEarth summit report
9Manufacture process of timber?
- ASeasoning, manufacture, conversion, finishing
- BSeasoning, conversion, manufacture, finishing
- CConversion, seasoning, manufacture, finishing
- DConversion, seasoning, finishing, manufacture
10The molecular 'backbone's most plastics is made of chains of:
- AIron
- BHydrogen
- CCarbon
- DCarbon dioxide
11Water-risting admixtures in concrete are:
- AHydrophilic
- BStabilise tiny bubbles in the concrete
- CTypically phosphates or hydroxycarboxylic acids
- DStearates or oleates
12Which of these is INCORRECT?
Metals can be:- AAnnealed
- BPickled
- CVulcanised
- DAnodised
13Accelerators in concrete"
- AIncrease the reaction between water and cement
- BIncrease the reaction between air and portland cement
- Ctypically used in hot weather
- Dgenerally not used in precast forming
14Which is TRUE of Hydraulic Lime?
- ALower percentage of clay gives more rapid setting lime
- BHardens by hydration
- CSlowly absorbs CO2 to convert back into calcium carbonate
- DMade by grinding pozzolana
15Which is TRUE of Portland Cement:
- AIt is made from portland stone
- BIt requires the presence of water but not air to react
- CIt is feebly hydraulic
- DCombination of limestone, pozzolana and clinker
16BREEAM stands for:
- ABuilding Research Establishment Environmental Assessment Method
- BBuilding Research Establishment Educational Assessment Matrix
- CBritish Research Establishment Environmental Alliance Method
- DBritish Research Establishment Environmental Assessment Method
171m3 can sequester into how much carbon dioxide?
- A1000g C02
- B10kg C02
- C1 tonne C02
- D10 tonnes C02
18Timber is anisotropic
- AIt absorbs moisture
- BIt has the same properties in each axis
- CIt has good heat storage
- DIt has different properties in each axis
19Cellulose forms 40-50% of its dry weight of timber. This is formed of long chains of:
- AIron
- BGlucose
- CSilica
- DChlorophyll
20Cellulose is mainly responsible for tensile strength?
- ATrue
- BFalse
21Hemi- cellulose and Lignin are mainly responsible for compressive strength and elasticity?
- ATRUE
- BFALSE
22The colour of timber comes from cellulose and lignin?
- ATrue
- BFalse
23The starch in sapwood prevents fungus attack?
- ATrue
- BFalse
24Which is NOT a feature of hardwoods
- Aangiosperms
- Bmainly evergreen species
- C20% of timber use in UK
- Dslow growing
- Emore complex structure than softwood
25which is not a key feature of softwoods
- Agymonosperms
- Bmainly evergreen species
- Cmore complex cell structure than hardwood
- Dquick growing
- E80% of timber use in UK
26Timber deteriorating ratio is NOT generally caused by:
- AWeathering
- BInsects
- CAir Pollution
- DFungal attack
- EFire
27Fungal attack in timber usually requires oxygen, warmth, a supply of food and:
- A50% min moisture content
- B5% min moisture content
- C20% min moisture content
- D100% min moisture content
28Which is incorrect? Bimetallic corrosion can occur when:
- A2 different metals are in contact with an electrolyte
- BMetals are separated by an inert material in a dry atmosphere
- COne of the metals is less noble than the other
- DAluminium is in contact with steel in a salt water environment
29Why should zinc not be used in contact with copper or copper alloys
- AIt will de-vitrify
- BIt will cause the copper to rust
- CIt will be subject to bi-metallic corrosion
- DIt will be subject to thermal creep
30Which these tests are carried out on concrete before it has cured
- ASlump test, Flow table
- BCube test, Flow table
- CHammer test, Cube test
- DFlow Table, Hammer test
31Plasticisers and super plasticisers are used in concrete construction. Which is INCORRECT?
- AThey can reduce the 28 day strength from concrete
- BThey increase the workability of the concrete mix
- CThey reduce the amount of water used in the concrete mix
- DThey enable easier placing and compaction
32Float glass is made over a bed of molten?
- ACopper
- BSteel
- CTin
- DLead
33Hardness is measured suing which scale
- AThe D'Oh scale
- BThe Moh scale
- CThe Ohm scale
- DThe Loh scale
34Why is flux (soda) added to silica in a furnace?
- ATo add colour
- BTo reduce its melting point
- CTo strengthen it
- DTo make it insoluble
35Why are network modifiers added to silica in the furnace?
- ATo make it insoluble
- BTo add colour
- CTo avoid crystallisation in cooling
- DSo that it can be used in radiation screens
36Open building systems are specifically
- ASystem which can accommodate components from other manufactures
- BSystems which are volumetric
- CSystems whose components can be disassembled
- DSystems which are non volumetric
37Igneous rocks represent 5% of the earths crust?
- ATrue
- BFalse
38Sandstones colour depends on the natural cement in it.
Calcareous sandstone which contains calcium carbonate is:- AGrey
- BWhite
- CGreen
- DRed
39Siliceous sandstone, which contains silica is:
- AWhite
- BGrey
- CGreen
- DRed
40Ferruginous sandstone, which contains iron oxide is:
- ARed
- BGreen
- CWhite
- DGrey
41Sulphur dioxide pollution can be a problem for stone, why?
- AIt causes the stone to absorb moisture
- BIt stains them black which heats up the stones and they crack
- CIt forms sulphuric acid in water which dissolves alkaline stones
- DIt forms sulphuric acid in which create a yellow deposit on the stone
42Timber is kiln-dried to a moisture content of:
- AZero
- BAbove 20%
- C15+-3%
- D100%
Información
- Descripción
- Test sobre Materials test, creado por Marco Di Virgilio el 19/05/2017.
- Autor
- Marco Di Virgilio
- Idioma
- English
- Visitas
- 5
- Valoración
- Aún sin valoraciones Valora este test