Posts

Showing posts from February, 2021

Table of Contents

Building Materials- MCQ on Plastic and tiles

-
Image
MCQ about Plastic and tiles Which of the following plastic is recommended for manufacturing floor tiles? Alkyd Cumarone-indene Styrene Vinyl solution Cumarone-indene Cumarone-indene: These resins become soft over a narrow range of temperature. Their electrical properties do not change with humidity. They are brittle and are used for floor tiles, rubber manufacturing, etc. Important Points: Some other forms of thermoplastic resins are as follows: Alkyd: these resins are made from glycerine and phthalic anhydride. They are used for preparing thin films of plastics. Styrene: These resins are made of ethylene which is made of petroleum. This is useful in electronic and telecommunications industry. Ring shakes in timber are: Longitudinal separations in the wood between the annual rings SHAKES Click here Shakes Shakes are nothing but cracks which separates the wood fibres partly or completely. There is a longitudinal separation in the wood between ...
Read more

Building Material- Crushing strength of good stone

-
MCQ about Crushing strength of good stone The crushing strength (MPa) of good stone used for construction of a building must not be less than 10 50 100 120          solution Crushing strength should be greater than 100 N/mm2 A good building stone has the following properties: Percentage of wear in the attrition test should not be more than 3 Specific gravity should be at least 2.7 Coefficient of hardness should be greater than 17 Percentage of water absorption by weight of stone should be less than 5 Toughness index should not be less than 13 Crushing strength should be greater than 100 N/mm2 Previous                              Next
Read more

Building Material - self compacted concrete

-
Self Compacted Concrete MCQ For self-compacted concrete water/powder ratio by volume should be 0.80 to 1.0  1.2 to 1.4 0.6 to 0.8 1.0 to 1.2   solution .8 to 1; Indicative proportions of materials are shown below for self-compactible concrete: 1) Water/powder ratio by volume is to be 0.80 to 1.00 2) Total powder content to be 160 to 240 litres (400-600 kg) per m3 3) The sand content may be more than 38% of the mortar volume. 4) Coarse aggregate content should normally be 28 to 35% volume of the mix. 5) Water/cement ratio is selected based on the strength required. In any case, water content should not exceed 200 litres/m3. Previous                              Next
Read more

Building Material - Hydration of Portland Cement

-
Hydration of Portland Cement CORRECT decreasing order of rate of hydration of Portland cement compounds C3A C4AF C3 S C2 S solution C4AF > C3A > C3S > C2S The setting and hardening of cement after addition of water is due to hydration of some of the constituent compounds of cement such as Tricalcium aluminate, Tricalcium silicate, Dicalcium silicate, and Tetra calcium aluminoferrite. These compounds are known as Bogue’s Compounds. Hydration of Bogues Compounds Tricalcium aluminate (C3A): Celite is the quickest one to react when the water is added to the cement. It is responsible for the flash setting. The increase of this content will help in the manufacture of Quick Setting Cement. The heat of hydration is 865 J/Cal. Tricalcium silicate (C3S): This is also called as Alite. This is also responsible for the early strength of the concrete. The cement that has more C­­­­3S content is good for cold weather concreting. The heat of hydration is 500 J/Cal. Dica...
Read more

Building Material - Bricks question

-
MCQ about Bricks Which of the following is the main reason to provide frog in the bricks? Print manufacturer’s name. Form keyed joint between brick and mortar. Improve thermal insulation Reduce the weight of brick.   solution1 Form keyed joint between brick and mortar. Frog: It is an indentation or depression on the face of a brick made with the object forming a key for the mortar. This prevents displacement of the brick above. ∴ The term frog means a depression on a face of bricks. Some other definitions: 1. Quoins is the exterior angle of a wall. 2. Closer is the portion of brick cut in such a manner that its one long face remains un-cut. 3. Bat is the portion of brick cut across width. 4. Perpend is that vertical joint on the face of wall, which lies directly above the vertical joints in alternative course. 5. Stretcher: Bricks are laid along its length. 6. Header: Bricks are laid perpendicular to the face of wall. Previous     ...
Read more

Advantages of Seasoning of timber - Building Material

-
Image
 Seasoning of Timer MCQ   following  statements are true or false:           Seasoning of timber results in: 1 Increased strength 2. Increased durability 3. Reduced resilience               solution all of correct : Three most important advantages of seasoning have already been made apparent: 1. Seasoned timber lasts much longer than unseasoned. i.e. durability Since the decay of timber is due to the attacks of wood-destroying fungi, and since the most important condition of the growth of these fungi is water, anything which lessens the amount of water in wood aids in its preservation. 2. Seasoning increases the strength of the timber. 3. In the case of treated timber, seasoning before treatment greatly increases the effectiveness of the ordinary methods of treatment, and seasoning after treatment prevents the rapid leaching out of the salts introduced to preserve the timber. 4. The saving...
Read more

Concrete, Cement, Timber, Sand, Workabilty and Aggregates, stones- Building Material

-
 Cement and its type mcq   Identify the correct statements. i. Expanding cement is used for filling the cracks ii. White cement is mostly used for decorative works iii. Portland Pozzolana cement produces less heat of hydration iv. High strength Portland cement is produced from the special mater ials         solution All correct Expanding Cement: It is obtained from mixing sulpho-aluminate. It has a property to expand, thus used in the elimination of shrinkage cracks. It is used in the treatment of expansion joints and for grouting. White Portland cement: The white colour of this cement is due to less proportion of iron oxide, which is replaced by Sodium Alumino Ferrite. Colouring agents can be added to white cement to produce coloured cement. Portland Pozzolana Cement: It is formed by inter grinding of OPC clinker to 10% to 25% of pozzolanic material. It produces less heat of hydration and offers greater resistance to the attack of aggressive water...
Read more

Shear strength of TImber is highest in the direction of - Building Material

-
 Shear strength of Timber mcq The strength of any timber is highest in direction of an angle of 60 degree to grains an angle of 0 degree to grains an angle of 90 degree to grains an angle of 120 degree to grains solution An angle of 0 degree to grains; Wood has three principal axes namely longitudinal, tangential and radial axes. Since it is orthogonal material m it has three values of modulus of elasticity varying by as much as 150 to 1, three shear moduli varying from 20 to 1, and six Poisson’s ratios varying by 40 to 1. For different strength: a) Compressive strength: The compressive strength is found to be highest when acting parallel to the axis of the growth. However compressive strength perpendicular to fibres of wood is much lower than that parallel to fibres of wood. Compressive strength parallel to fibre varies from 30.0 to 77.5 N/cm2. b) Tensile strength: Tensile strength along direction parallel to the grain is found to have greatest strength that can be de...
Read more

Building Material

-
The calcination of pure lime result in:- quick lime hydraulic lime hydrated lime fat lime solution Quick Lime ; Calcination or calcining is a thermal treatment process to bring about a thermal decomposition. The process takes place below the melting point of the product. The name calcination is derived from the Latin word ‘Calcinare’ which mean to burn lime. CaCO3→heatCaO+CO2(Limestone)→(Lime)+(Carbondioxide)CaCO3→heat⁡CaO+CO2(Limestone)→(Lime)+(Carbondioxide) The lime which is obtained by the calcination of comparatively pure limestone is known as quick lime or caustic lime. It's chemical composition is (CaO) oxide of calcium and it has great affinity for moisture. The quick lime as it comes out from kiln is also known as lump limes. Previous                              Next
Read more

Building Material

-
Admixtures for concrete                  Sodium carbonates in deionised water accelerates the initial as well as final setting times whereas the other compound sodium bicarbonates retards the initial and final setting times in all concentrations. Sodium carbonates and sodium bicarbonates in deionised water decrease the compressive and tensile strength of concrete specimens significantly at 28 days and 90 days. Important points: The two most popular type of admixture added in concrete are as follows: Retarder:            It is added in concrete in order to delay the chemical process of hydration so as to keep the concrete plastic and workable for longer duration in comparison to the concrete without retarder. Example: Calcium Sulphate, Sugar, starch, cellulose etc. Accelerators:       It is used to increase the rate of gain of strength in the concrete.These admixtures find their appli...
Read more

The impurity of mixing water which affects the setting time and strength of concrete - Building Material

-
The impurity of mixing water which affects the setting time and strength of concrete is _____. sodium sulphates sodium chlorides sodium carbonates and bicarbonates calcium chlorides solution Sodium Carbonates and Bicarbonates. Explaination: Sodium carbonates in deionised water accelerates the initial as well as final setting times whereas the other compound sodium bicarbonates retards the initial and final setting times in all concentrations. Sodium carbonates and sodium bicarbonates in deionised water decrease the compressive and tensile strength of concrete specimens significantly at 28 days and 90 days. Previous                              Next
Read more

Building Material

-
Brick Clay bricks are classified as first-class, second class, third class and fourth class based on their physical and mechanical properties. First Class Bricks: 1. These are thoroughly burnt and are of deep red, cherry or copper color. 2. The surface should be smooth and rectangular, with parallel, sharp and straight edges and square comers. 3. These should be free from flaws, cracks, and stones. 4. These should have a uniform texture. 5. No impression should be left on the brick when a scratch is made by a fingernail. 6. The fractured surface of the brick should not show lumps of lime. 7. A metallic or ringing sound should come when two bricks are struck against each other. 8. Water absorption should be 20% of its dry weight when immersed in cold water for 24 hours. 9. The crushing strength of the brick should not be less than 10 N/mm2. This limit varies with different Government organizations around the country. Uses: First class bricks are recommended for pointing, exposed face wo...
Read more

Ferrocement and Properties: Lightweight, Durable, and Sustainable Solutions

-
Ferro cement and Its Properties Introduction Impervious nature Capacity to resist shock No need of formwork Strength per unit mass is high Ferro cement developed by P.L. Nervi, an Italian architect, and engineer, in 1940. It consists of closely spaced wire meshes which are impregnated with rich cement mortar mix. The wire mesh is usually of 0.5 to 1.0 mm diameter wire at 5 mm to 10 mm spacing and cement mortar is of the cement-sand ratio of 1: 2 or 1: 3 with water/cement ratio of 0.4 to 0.45. The ferro cement elements are usually of the order of 2 to 3 cm in thickness with 2 to 3 mm external cover to the reinforcement. The steel content varies between 300 kg to 500 kg per cubic meter of mortar. The basic idea behind this material is that concrete can undergo large strains in the neighbourhood of the reinforcement and the magnitude of strains depends on the distribution and subdivision of reinforcement throughout the mass of concrete. It is impervious in nature, has the cap...
Read more

Density of high-density Concrete - Building material

-
13. Density of high-density concrete is about ________ 2400 kg/m3 2750 kg/m3 3000 kg/m3 3360 kg/m3 solution   3360 kg/m3. The density of normal concrete is about 2400 kg/m3 . The density of light-weighted concrete is about 1900 kg/m3 . For concrete to be termed as high-density concrete, it must have a unit weight ranging about 3360 kg/m3 to 3840 kg/m3 , which is about 50% higher than the weight of conventional concrete. The high-density concrete is used in the construction of radiation shields. Previous                             Next     
Read more

Building material

-
12. The test most suitable for concrete of very low workability is  Permeability test Compaction factor test Vee bee test Compression test   solution1 Vee bee test Previous                               Next     
Read more

Workability of Concrete - Building Materials

-
 Workability of concrete           The ease and homogeneity with which a freshly prepared concrete can be mixed, placed, compacted and finished are called workability.           For low workability concrete, the most suitable test is either Vee-bee Consistometer test or the Compaction factor test.           Of which, Vee bee consistometer is adopted for concrete with even lower workability as compared to that for compaction factor test.   Important Points: For highly workable concrete , the most suitable test is a flow table test. For medium workable concrete , the slump cone test is favorable. J-Ring Test is conducted to check whether the given concrete sample is self-compacting concrete or not. Previous                                Next     
Read more

Building material - PAINT - MCQ

-
1.Distemper is a type of  Oil Paint Plastic Paint Water Paint Enamel Paint solution1 Water Paint 2.The paint used for automobiles is  Oil Paint Plastic Paint Water Paint Enamel Paint solution2 Oil Paint 3.Linseed oil is used as Vehicle Base Thinner Drier solution3 Vehicle   15 More MCQ abouts Paint building materials Previous                                Next     
Read more

Building Material

-
11. Slate belong to Igneous rock Sedimentary rock Foliated rock Metamorphic rock      solution Metamorphic rock Previous                                Next
Read more

Building Material - PAINT - MCQ

-
10. The quantity of drier in paints is limited to ______ 2% 4% 6% 8%      solution 8% hello 11. The ingredient of paint that increases coverage area and makes application easy is______ Base Vehicle Solvent filler      solution c hello 12. The ingredient of paint that reduces the cost and increases durability______ Base Vehicle Solvent filler      solution d hello 13.  The cheap ingredient of Paint is______ Base Vehicle Solvent filler      solution c hello 14.  The presence of dampness while applying the primer affects the life of ______ Oil Paint enamel Paint aluminium Paint Plastic Paint      solution a hello 15. Commonly used base for paint is ( a) iron oxide (b) red lead (c) titanium white (d) any one of the above      solution d hello 16. Commonly used vehicle in paint is (a) linseed oil (b) poppy oil (c) nut oil (d) ...
Read more

Building Material - PVCN full form - PAINT

-
    9. What is the full form of PVCN with respect to paint? Pigment Volume Concentration Number Paint Volume Concentration Number Paint Volume Carbon Number Pigment Volume Carbon Number               solution Pigment Volume Concentration Number Previous                                Next
Read more

Building Material

-
8.Which one of the following tests, is used to test aggregate for its abrasion resistance? Deval attrition test Dorry abrasion test Los Angeles test All option are correct      solution All option are correct Previous                                Next
Read more

Building Material

-
7. If a beam or column becomes weak or found to be insufficient, the most effective way to increase its strength is by Choose answer  Grouting  Plate Bonding  Micro concreting  Jacketing Submit Previous                               Next
Read more

Building Material

-
6. The penetration test on bitumen is used for determining its Choose  answer  Grade  Ductility  Viscosity  None of these Submit                              Next
Read more

Error

-
The page is under development Sorry for Inconvenience  Please visit this site for Other topics 
Read more
[Job Updates & Opportunities]vk

All post Here - script by vk

[abstract]vk [accelerators]vk [admixtrure]vk [Aggregate]vk [agrregate test]vk [aquifer]vk [Batten]vk [beam]vk [Bitumen]vk [Bolt]vk [Booster]vk [Boussinesq theory]vk [Brick]vk [Bricks]vk [Bricks Study]vk [Building Materials]vk [canal]vk [cast]vk [cement]vk [CIVIL ENGINEERING]vk
[abstract]vk [accelerators]vk [admixtrure]vk [Aggregate]vk [agrregate test]vk [aquifer]vk [Batten]vk [beam]vk [Bitumen]vk [Bolt]vk [Booster]vk [Boussinesq theory]vk [Brick]vk [Bricks]vk [Bricks Study]vk [Building Materials]vk [canal]vk [cast]vk [cement]vk [CIVIL ENGINEERING]vk [Civil engineering amazing]vk [Civil engineering amazing projects]vk [class]vk [coat]vk [concrete]vk [Concrete Technology]vk [construction management]vk [Contra-flexure]vk [Cost]vk [Coulombs Theory]vk [Critical Flow]vk [Cseb]vk [csphcl exam previous year papers and admit cards]vk [docks and harbour]vk [elastic]vk [Electrical and Electronics]vk [electronics]vk [Engineer's-Knowledge]vk [ENVIRONMENTAL ENGINEERING]vk [Ese Civil 2023 questions]vk [estimate]vk [Ethics and Moral]vk [Facts-About-Engineering]vk [ferro cement]vk [first]vk [FlOW-NET]vk [FLUID MECHANICS]vk [FOUNDATION]vk [Frog]vk [Geo-technical-engineering]vk [Glass]vk [good]vk [HEART]vk [high]vk [High density concrete]vk [HIGHWAY ENGINEERING]vk [hydration]vk [Hydraulic jump]vk [important notes]vk [Instruments and Tools]vk [Iron]vk [Irrigation]vk [isochrones]vk [Job Updates & Opportunities]vk [lime]vk [Local shear failure]vk [low]vk [management]vk [mason]vk [Masonry]vk [maturity of concrete]vk [MCQ]vk [medium]vk [Mild steel]vk [mortar]vk [Optimum Compaction]vk [paint]vk [pig]vk [Plastering]vk [plastic]vk [Plasticizers]vk [prime]vk [problem]vk [Project Management]vk [properties]vk [Question-Answer]vk [quick lime]vk [Quick Revision]vk [Quick-Revision]vk [Rankine Theory]vk [RCC]vk [Recommended]vk [Reinforced Concrete Construction]vk [resection]vk [retarder]vk [RING]vk [rock]vk [scope]vk [seasoning]vk [second]vk [Self compacted]vk [sensitivity]vk [SHAKES]vk [Shear center]vk [shear strenght]vk [slope deflection method]vk [Soil exploration and Boring]vk [SOIL MECHANICS]vk [Soil Structure and Clay Mineralogy]vk [SOM]vk [Stability of Slope]vk [STAR]vk [steel]vk [Steel Engineering]vk [stiffeners]vk [stone]vk [Strength of Material]vk [Structural Steel Design]vk [structure analysis]vk [Subjects]vk [surveying]vk [syphon]vk [tack]vk [temperature]vk [templates]vk [Terzaghi Theory]vk [Test]vk [Tests]vk [third]vk [TILES]vk [timber]vk [tpes]vk [TRANSPORTATION ENGINEERING]vk [Tunnel]vk [Types of flow]vk [valuation]vk [value]vk [vee bee]vk [Wall]vk [wastage]vk [Water Supply]vk [Weld]vk [westergaard theory]vk [workability]vk