Recent questions tagged construction-materials

Description : Explain about Agro waste material. State its importance in construction.

Last Answer : Waste materials produced from agricultural byproducts such as coconut shells, sugarcane bagasse, straw, rice husk, coconut fibers, coconut and areca nut tree trunks, coconut leaves etc. are known ... floor tiles, brushes, mattresses j) Mixed with cement mortar which increases the impact strength

Description : Explain about geo synthetics materials. Mention application of it

Last Answer : Geosynthetics are man-made materials used to improve soil condition. Geo means earth or soil and synthetics means man made. Geo grids, geo textiles, geomembranes, geo cells are some of the ... hill sides. h) Reinforced soil- soil walls, bridge abutments, culverts, bridges, soil arches

Description : Enlist constituents of Plaster of Paris and state the two uses of Plaster of Paris

Last Answer : The constituents of POP are It consists of calcium sulphate. It is chemically CaSO4. 1/2 H2O. It is obtained by calcining gypsum at 120 deg. C. by removing ¾ of water of crystallization. ... Used by orthopedic surgeon for setting bones g) Used for wall plasters, wall boards, structural tiles.

Description : State four types of special mortars and give one use of each

Last Answer : a) Fire resistant mortars: Uses: a) Used with fire bricks for lining furnaces b) Used at fire places, ovens etc. b) Injection mortar: Uses: a) For protecting the reinforcement from ... room in hospitals and clinics f) Light weight mortar: Used in sound proof and heat proof constructions.

Description : State any two properties and any two uses of fly ash

Last Answer : Properties: a) It contains SiO2, Al2O3, Fe2O3, CaO and some toxic elements b) Flyash together with bottom ash is a non-hazardous material c) These particles are spherical in shape d) ... reclamation l) Used in cement production m) Production of roller compacted concrete n) Used in geopolymers

Description : State the two uses of the following construction materials: i) Hollow blocks ii) Pavement blocks 

Last Answer : i) Hollow Blocks: a) Used for external load bearing walls, b) Panel walls, c) Columns, d) Retaining Walls e) Compound Walls, f) Used for sound insulation g) It Keeps the house cool in summer ... give pleasant look d) Petrol pumps e) gardens f) Airports g) Kids play area h) Jogging tracks

Description : State the uses (two each) of the following construction materials: i) Soda lime glass ii) Ferrous metal

Last Answer : i) Soda lime glass: a) Used in window and plate glass b) Glass blocks c) Bottles d) Inexpensive table wares e) Fluorescent and incandescent light bulbs ii) Ferrous metal: a) CI (Cast Iron) ... GI sheets f) Carbon steel is used for making tools g) Weld meshes are used for partition and fencing

Description : Define asphalt and state any three properties of asphalt.

Last Answer : Definition: It is a form of bitumen which is sticky, black and viscous liquid or semisolid in nature. Aggregates + bitumen = asphalt. OR It is an artificial mixture of bitumen and inert matter like alumina, ... cooled. 8. It is tough and durable material 9. It is soluble in C2S, Benzene, Naptha

Description : State the properties and uses of distemper 

Last Answer : Properties: a) Less durable than paint b) Easy to apply c) Poor workability d) Available in variety of shades e) Costly f) Gives smooth and pleasing surface g) Uses: a) ... surfaces on plastered cement concrete of buildings  b) To paint the buildings from outside in areas of low rainfall

Description : State important properties and uses of geopolymer cement 

Last Answer : Properties: a) It gain ultimate strength within 24 hours and cures more rapidly than OPC. b) It has an ability to form strong chemical bond with all types of reagents and water. c)It ... of fresh water via the elimination of fly-ash disposal sites. h) Various applications in building industry

Description : State various thermal insulating materials. State any two properties of insulating material

Last Answer : Thermal insulating materials: 1) Asbestos 2) Aluminum Foil 3) Thermocol 4) Saw dust 5) Cork board slabs 6) Foam glass 7) Rock Wool 8) Glass Wool 9) ... . h) Presence of Moisture: with the increase in moisture content, the coefficient of thermal conductivity rises greatly

Description : Explain defects in timber with neat labeled sketches

Last Answer : a) Knots: These are the bases of branches which are broken off from the tree. This occurs because of improper cutting of tree. b) Shakes: These are cracks in the timber which appear due to excessive frost or ... of timber f) Bow: This is bending along the longer side of timber.

Description : Explain the method by which waterproofing of existing old slab can be done.

Last Answer : i) Clean the slab ii) Expose cracks by tools and make them V' shaped. iii) Fill mix of cement mortar iv) Fill brick bats and sand over the slab v) Sprinkle cement slurry and paste of water proofing ... tiles over the layer of cement mortar 1:3 vii) Cure it for 3 days and slab is water proof.

Description : Suggest the type of glass used for the following work: i) Making panel of partition wall ii) Cashier Cabin iii) Skylight iv) Door Shutter

Last Answer : i) Making panel of partition wall: Block glass OR Sheet Glass OR chipped and ground glass OR soda lime glass ii) Cashier Cabin-Polished plate glass OR bullet proof glass OR soda lime glass OR laminated ... clear window glass or lead glass iv) Door Shutter: Soda lime glass OR tempered glass

Description : Explain two properties and two uses of sand.

Last Answer : Properties: a) It is a naturally occurring granular material composed of finely divided rock and mineral particles. b) It is obtained by dredging of river, hence harmful for the ecosystem. Uses of sand: ... ) Manufacture of bricks d) Used in filtration of water e) Used to make casts.

Description : Draw cross section of timber. Give any four engineering properties of timber.

Last Answer : Properties of Timber: 1. Appearance: A Freshly cut timber should have shining appearance 2. Colour: The Colour of the timber should be dark. Light colour of timber indicates low strength. ... : Good timber should be free from defects 10. Texture: The texture of timber should be even

Description : What do you mean by eco-friendly building materials? State any two properties of it.

Last Answer : Eco-friendly means earth-friendly or not harmful to the environment. This term most commonly refers to products that contribute to green living or practices that help conserve resources like water and ... It reduces air pollution, land pollution & water pollution. 7. It is locally available. 

Description : State the role of civil engineer in the field of Environmental Engineering.

Last Answer : The civil engineer plays an important role in Environmental Engineering in the following ways: 1. Sensible use of water, land, and air so that the environmental pollution and degradation is ... , designing, construction of water and waste water treatment plants, and disposal of solid waste.

Description : Enlist any four properties of ferrocrete

Last Answer : 1. It can be used in construction of roads and walkways. 2. It has higher early strength 3. Quick setting 4. Early demolding, handling and use of precast units 5. More finely grounded ... building material made from combination of concrete and iron. 10 It is highly resistant to wear and tear

Description : Define Enamel paint and Plastic paint

Last Answer : Enamel Paint: It contains white lead, oil, petroleum, spirit and resinous material. It is used for external and internal walls  Plastic Paint: It contains the necessary variety of plastics and it is available in market under different trade names. It is used in internal walls

Description : Enlist any four types of special bricks

Last Answer : a) Acidic bricks b) Perforated bricks c) Silica bricks d) Colored bricks e) Fire bricks f) Blue bricks g) Fly ash bricks h) Engineering bricks i) Refractory bricks j) Sand lime bricks

Description : Enlist any four types of flooring tiles.

Last Answer : Types of flooring tiles: Shahabad, Kotah, Ceramic, Granite, Marble, Vitrified, Glazed, Plastic tiles Concrete tiles, Mosaic tiles, Clay tile.

Description : Define quarrying of stone. State any two methods of quarrying

Last Answer : The process of taking out stones from natural rock beds is known as quarrying of Stones. Methods: a) Digging b) Heating c) Wedging d) Blasting

Description : List any four applications of Irrigation engineering

Last Answer : The applications of irrigation engineering are: 1. Construction of dams, canals, spillways etc. 2. Supplying Water for Agriculture, Drinking Etc. 3. Irrigation engineering also deals with the ... during the periods of less rainfall or during summer when water is not available in abundance

Description : State the role of civil engineering in human life

Last Answer : The Civil Engineering plays an important role in human life in the following ways: 1. Designing and construction of infrastructure 2. Includes roads, bridges, dams, canals, buildings, water supply ... 4. Water supply for drinking, agriculture, waste disposal etc. is also done by civil engineers.

Description : State the uses of (i) Glass Fibres (ii) Asbestos Fibres. 

Last Answer :  Uses of Glass Fibres : 1. Used as filter in air conditioners. 2. Used as fine aggregate for finishing plaster to reduce cracking. 3. Used with plastic to produce glass reinforced plastic (GRP), ... 5. It is used for thermal insulation work for pipe line. 6. Used in electrical insulation work.

Description : Give the uses of granite & marble polishing waste. 

Last Answer : Uses of granite & marble polishing waste : 1. Used as fine aggregate in mortar & concrete. 2. Used in manufacturing of bricks. 3. Used inmanufacturing of artificial stone. 4. Used inmanufacturing of paving blocks. 

Description : Write any two uses of rice husk and coir fibre. 

Last Answer : Uses of rice husk : 1. To make sound insulating material. 2. To make thermal insulation. 3. Used in manufacturing of clay bricks. 4. To make high grade concrete & mortar. 5. Used as ... delicate articles. 6. Used for geotextile. 7. Used in plaster work to make crack resistant plaster. 

Description : Give properties and uses of POP.

Last Answer : Properties of POP: 1. Fire resistant 2. Heat resistant 3. Light in weight 4. Not affected by bacteria. 5. Sets without shrinkage within 5 minutes. 6. Good adhesion to the plaster, wood work ... surface. 3. Used in artwork, pottery. 4. Sound insulating boards. 5. For partition wall. 

Description : State the properties of an ideal varnish. 

Last Answer : 1. It should render the surface glossy. 2. It should dry rapidly / quickly. 3. It should form hard, durable, flexible film on painted surface. 4. It should not be affected by atmospheric action. 5. It should stick easily to surface. 6. It should not shrink / cracks after drying. 

Description : State the situations where oil paint and distempers are used.

Last Answer : situations where oil paint are used: 1. It can be used on dry surface (damp free), on wood & metal works. For enhancing the appearance. 2. To protect the metals works from corrosion. 3. To ... Used on wall boards. 3. To enhance the appearance of plaster. 4. To increase life of plaster. 

Description : Explain why you need agro and industrial waste as a construction materials. 

Last Answer : 1. To maintain ecosystem. 2. To reduce / control pollution. 3. To reduce the cost of construction material. 4. To improve the required properties in construction materials like light weight product, ... 5. To solve the problem of industry waste disposal. 6. To conserve the natural resources. 

Description : Give properties and uses of ceramic materials in construction.

Last Answer : Properties: 1. It is hard. 2. It is bristle. 3. It is in the form of amorphous (non-crystalline) 4. The structure is glassy. 5. It is insulator thermally & electrically. 6. It is ... porcelain. 6. For making POP. 7. For making electric. 8. For Manufacturing of sanitary wares, pavers. 

Description : Explain the manufacturing process of hydraulic lime. 

Last Answer : 1. Burning of impure limestone / kankar containing clay containing less than 30 %. With coal or charcoal as fuel. 2. If soft limestone is used, it is powdered, mixed with clay in right proportion & ... long as it is protected from air & moisture. After slaking it should be used within a week. 

Description : Explain various types of clays with their suitability.

Last Answer : Types of clays are: 1. Refractory clay (Terra cotta clay): This clay is highly disperse and very plastic. This clay contains high percent of alumina. Uses: Used to manufacturing of ... possessing a high degree of tenacity & plasticity. Uses:Manufacturing of glazed pottery, porcelain. 

Description : Explain the process of distempering

Last Answer : Process of Distempering: The application of distemper is carried out in the following way 1. Surface Preparation: The surface to receive the distemper is thoroughly rubbed and cleaned. New plastered ... plastered walls, distempers should be applied in two or three coats over coat of primer.  

Description : What are the properties of sound insulating materials?

Last Answer : Properties of sound insulating materials: 1. It should be light in weight 2. Easy to handle and fix 3. It should be resistant to attack termite and insect 4. It should have low density and porous texture 5. It should be fire resistance 6. It should be moisture resistance

Description : What are the properties of precast pavement blocks? 

Last Answer : Properties of precast pavement blocks: i) It should have good dimensional stability. ii) It should have non-skid surface. iii)It should have good compressive strength from 20 N/mm2 to 50 N/ ... have good transverse strength (3 N/mm2 and above) vi) It should have average abrasion about 3mm 

Description : What are the properties of tar? 

Last Answer : Properties: i) It is deep black in colour. ii) It contains more carbon content. iii) It has high viscosity. iv) It becomes more fluid when heated. v) It setting time is less. 

Description : Write short note on solid concrete blocks

Last Answer : Solid Concrete Blocks: The specification and the characteristics of a solid concrete blocks depend on the machine used to manufacture concrete blocks. The most common size of solid concrete block ... size and shape. It is environmental friendly and hence utilizes wastes and local resources. 

Description : What are the different types of aggregates ?

Last Answer : Aggregate are divided into two categories: 1. Coarse Aggregate: The size of aggregate bigger than 4.75mm is considered as Coarse Aggregate. a) Crushed stone particles. b) Brick bats c) Slag 2. Fine ... Aggregate.  a) River sand. b) Sea sand. c) Pit sand d) Artificial crushed stone sand. 

Description : Describe the wet process of manufacturing of cement 

Last Answer : Various stages in wet process of manufacturing of cement: The manufacturing of cement by wet process can be divided into three stages. Stage-I Mixing of raw materials: In this stage, 10% of chalk and ... ground cement is stored in silos. It is then weighed and packed in bags of50kg by weight.  

Description : Explain various types of tiles based on their use 

Last Answer : 1. Natural tile: These types of tiles are produced from natural materials that are quarried, finished and cut to size. Common types of stones used as flooring tiles include granite, marble, ... acquire the desire print or colour after manufacturing. They are famous inthe name of galicha tiles. 

Description : State the applications of soils as a construction material. 

Last Answer : Soil is naturally obtained from disintegration of rocks when they are exposed to atmosphere by weathering agents like sun, wind, rain, frost etc. Applications of Soil : Soil is used as construction and ... is used in manufacturing of bricks and tiles. Sand from soil is used in filter bed.  

Description : What are the requirements of good sand? 

Last Answer : Requirement of Good Sand : 1. Silt Content should be less than 3% by weight (12% by volume in 10 min) 2. Sand should be free from Organic materials, dust, clay etc. 3. Sand shall not ... such as iron, pyrites, alkalies, salts, coal or other organic impurities. 4. Sand should be well graded. 

Description : Describe the field tests for cement. 

Last Answer : Open the bag and take a good look at the cement. There should not be any visible lumps. The colour of the cement should normally be greenish grey. Thrust your hand into the cement bag. It must ... . After 24 hr the cake should retain its original shape and the same time set to attainsome strength. 

Description : Describe the broad classification of materials.

Last Answer : Materials can be classified into following types: 1) Natural materials 2) Recycled materials 3) Artificial materials 4) Special materials 5) Finishing materials 1) Natural construction ... and roofing. Varies types of tiles are available in market like Vitrified, Shahabad, Mosaic etc 

Description : Enumerate the field tests to which bricks are generally subjected. 

Last Answer : Field tests performed on bricks for its suitability: 1) Shape and size 2) Structure 3) Hardness 4) Soundness 5) Color Test 

Description : What is wall cladding? 

Last Answer : Wall Cladding or tiling is a process of finishing the surface with tiles. Due to wall cladding, walls are easy to clean. It protects the exterior surface of building from atmospheric agents. 

Description : What are the various operations involved in manufacturing of burnt clay bricks? 

Last Answer : Manufacturing of Burnt Clay Brick consists of a) Preparation of clay. b) Moulding c) Drying d) Burning.