highway machinary
TRANSCRIPT
introduction
INTRODUCTION
• Different type of machinery is used in theconstruction of roads.
• The initial cost on machinery is more, so inmega project its use is economical but in smallworks its use is uneconomical.
• The use of machinery is time saving.
introductionThe machinery use in the construction of roads are
• Road roller
• Dozer
• Grader
• Trencher
• Scraper
• Ripper
• Scarifier
• Tractor etc
Types of road roller1. Smooth Wheeled Roller
• Its weight is up to 10 ton.
• It is the most old type of roller.
Types of road roller2) Sheep Foot Roller
• It is use for the compaction of clayey soil (cohesive soil), where the smooth roller can’t work.
• (Video)
Types of road roller3) Pneumatic Tyred
Roller
• It is use to compact bitumen.
• (Video)
Types of road roller4) Vibratory Roller
• This produce vibration to help in compaction.
• It is suitable for granular soil.
• Other type of roller can be vibratory too.
DOZER• Dozer is used to cut and push the material.
• Spreading the material
• It is use for cleaning
• Side hill cut
• Filling ditches
• Ditching
• Snow dozing
Types of dozer1) Bull Dozer
• It is the most common type. It has a blade
• Used to push material
• Also use to level
Types of dozer2) Angle Dozer
• it has blade which can rotate up to 30 degree.
• Use to push the material to the left or right.
Types of dozer3) Tree Dozer
• It has a special blade use for removing thetrees.
• It also can be use for ditching and spreadingmaterial.
• (Video)
Grader
It is use for different task.
• Making slope
• Mixing material
• Cutting soil and pavements
• Dozing snow
• Remove plants
• Ditching
• (video)
Drag Line
• Use for ditching, and to fill up the materials intrucks.
• Use to make canal, and cleaning the canals.
• It may be crawler type or tyred
• It perform ditching without entering in theditch.
• (Video)
Scraper
• It is use to dig soil and transfer to other place.
• It is only for soft soil.
• It has a two parts,
• Bucket and prim mover
• (Video)
Tractor• It is a multi purpose machine.
• It is use for agriculture works as to draw thetrolley and pushing the material.
Types of Tractor
1) Crawler TypeTractor
• Use for heavy works
• It is purely use forpushing and cuttingmaterial throughblade.
• Use in soft andwatery soil.
Ripper• Use to clean earth for making railway lines,
road etc
• It plough connected with grader to dig out theearth.
• Also called roter.
Scarifier• It is connected with grader, which use to dig
hard soil.
• Also connected with road roller.
• Its jaws are adjustable.
• For hard earthen work the number of jaws aredecrease.
• The depth of jaws in the soil can also becontrolled.
Scarifier
• Use for ditching, and to fill up the materials intrucks.
• Use to make canal, and cleaning the canals.
• It may be crawler type or tyred
• It perform ditching without entering in theditch.
Tip Wagon• The specific vehicle which use to carry
material from one place to another place.
• Also called dumper.
• Its body can be tilted to evacuate the loadmaterial.
Concrete Mixer• It is use to mix different component of
concrete.
• It efficiency depends upon the speed ofrotating drum and the blade of the mixer.
• It consume petrol or diesel as fuel.
• Size of mixer is express in the form of volumeit mixes of concrete at a time.
• For example 10/7 means 10 cubic meterbefore mixing and 7 after mixing.
Types of concrete mixer• There are two types of concrete mixer
A. Portable concrete mixer
B. Concrete Batching plantWe will discus portable concrete mixer
Portable concrete mixer Concrete batching [email protected]
Types of concrete mixerA) Portable Concrete Mixer
• It can be moved from one place to another
• It has wheels of rubber of steel
• Use for small works
• Draw by engine or by hands
Types of mixerThe portable mixer has two types
a) Tilting Mixer
• It is small in size and use for small works.
• Its drum can be tilted to fill up or to be emptyup the mixed concrete
Types of mixerI) Hand Fed Tilting Mixer
• In this type the material to be mixed is throwndirectly in to the drum
• it has steel plates in the drum to mix thematerial.
II) Load Fed Tilting Drum Mixer
• It is relatively large in size.
• The material is put in the drum by a steelpan which is lift up by a cable .
Types of mixerb) Non Tilting Type Mixer
This type of mixer rotates horizontally
Concrete is put and drawn as such.It is has two types
i. Reversing Drum Mixer
• This type is use for relatively large projects.
• There are two types of blade inside its drum.
• It has double direction movement.
• One blade rotates in one direction while other in
another [email protected]
Types of Mixerii) Roller Pan Mixer
• It use commonly for mixing mortar
• It consist of steel pan and steel roller
• Steel roller rotates inside the pan
• The mixed material is got through the sideopenings.
