8/9/2019 Results of Poor Compaction & Types of Compacting Equipments

1/25

RESULTS OF POOR COMPACTION

8/9/2019 Results of Poor Compaction & Types of Compacting Equipments

2/25

TYPES OFCOMPACTING

EQUIPMENTS

8/9/2019 Results of Poor Compaction & Types of Compacting Equipments

3/25

1. TAMPING ROLLERS

Sheeps-foot type

may be towed by a tractor or self-propelled

a unit may consist of one or several drums mounted on one or m

horizontal axles

have static weights in the range of 15 to 40 tonnes

he weight of the drum may be varied by adding water or sand

unit pressures under the feet up to !50 psi or more

"uite e#ective in compacting clays and mixtures of sand and cla

8/9/2019 Results of Poor Compaction & Types of Compacting Equipments

4/25

1. TAMPING ROLLERS

8/9/2019 Results of Poor Compaction & Types of Compacting Equipments

5/25

1. TAMPING ROLLERS

$eans of attaining the desired compaction%

1& he number of passes of a roller' producing a speci(ed unit pre

the feet' over each layer of soil&

)& *epeated passes of a roller' producing a speci(ed unit pressure

feet' over each layer of soil until the penetration of the feet doea stated depth

+& *epeated passes of a roller over each layer until the soil is compspeci(ed density&

8/9/2019 Results of Poor Compaction & Types of Compacting Equipments

6/25

1. TAMPING ROLLERS

$,./. $2.3 *,*S

Segmented or 2added *oller

rid *oller

8/9/2019 Results of Poor Compaction & Types of Compacting Equipments

7/25

1. TAMPING ROLLERS

8/9/2019 Results of Poor Compaction & Types of Compacting Equipments

8/25

1. TAMPING ROLLERS

8/9/2019 Results of Poor Compaction & Types of Compacting Equipments

9/25

2. SMOOTH-WHEEL ROLLERS

e#ective in compacting granular soils such as sand' gravel' andstone

e#ective in smoothing surfaces of soils that have been compacttamping rollers

classi(ed by type or by weight TYPE:

+ 6heel ) xle *oller7 ) 6heel andem *oller

+ 6heel andem *oller

8/9/2019 Results of Poor Compaction & Types of Compacting Equipments

10/25

2. SMOOTH-WHEEL ROLLERS

8/9/2019 Results of Poor Compaction & Types of Compacting Equipments

11/25

2. SMOOTH-WHEEL ROLLERS

8/9/2019 Results of Poor Compaction & Types of Compacting Equipments

12/25

2. SMOOTH-WHEEL ROLLERS

WEIGHT:

he rolls are steel drums' which may be ballasted with water

increase the weights

S28./.8.,3S%

1& esignating the weight

)& esignating the weight per linear inch of roll

8/9/2019 Results of Poor Compaction & Types of Compacting Equipments

13/25

2. SMOOTH-WHEEL ROLLERS

8/9/2019 Results of Poor Compaction & Types of Compacting Equipments

14/25

3. PNEUMATIC-TIRED ROLLERS

surface rollers which apply the principle of 9neading action to e#compaction below the surface

may be self-propelled or towed

may be small- or large- tired units

Small-tired%

) andem xles with 4-: tires on each axle

the rear wheels are spaced to travel over the surfaces betwewheels' which produces a complete coverage of the surface

8/9/2019 Results of Poor Compaction & Types of Compacting Equipments

15/25

3. PNEUMATIC-TIRED ROLLERS

8/9/2019 Results of Poor Compaction & Types of Compacting Equipments

16/25

3. PNEUMATIC-TIRED ROLLERS

arge-tired%

Sizes varying from 15 t0 )00 tons gross weight

;tilize ) or more big earth-moving tires on a single axle

capable of compacting all types of soils to greater depth

8/9/2019 Results of Poor Compaction & Types of Compacting Equipments

17/25

3. PNEUMATIC-TIRED ROLLERS

$ethods of indicating the compacting ability of pneumatic roller

1& ross weight of the unit

)& ross weight per wheel

+& 6eight per inch of tire width

4& ir pressure in the tires

8/9/2019 Results of Poor Compaction & Types of Compacting Equipments

18/25

3. PNEUMATIC-TIRED ROLLERS

23;$.8-.* *,*S with

8/9/2019 Results of Poor Compaction & Types of Compacting Equipments

19/25

4. VIBRATING COMPACTORS

8ertain types of soil such as sand' gravel' and relatively largestones respond "uite well to compaction produced by a

combination of pressure and vibration

1&

8/9/2019 Results of Poor Compaction & Types of Compacting Equipments

20/25

4. VIBRATING COMPACTORS

ctuated by separate engines mounted on the rollers' or in somhydraulic drives which rotate horizontal shafts on which one or m

are mounted&

8/9/2019 Results of Poor Compaction & Types of Compacting Equipments

21/25

4. VIBRATING COMPACTORS

8/9/2019 Results of Poor Compaction & Types of Compacting Equipments

22/25

8/9/2019 Results of Poor Compaction & Types of Compacting Equipments

23/25

8/9/2019 Results of Poor Compaction & Types of Compacting Equipments

24/25

5. MANUALLY OPERATED

VIBRATORY PLATE COMPACTORS

;sed for consolidating soils and asphalt >hot or cold mix? in localarger units are not practical&

hese-gasoline- or diesel- powered units are rated by centrifuga

exciter revolutions per minute' depth of vibration penetration>lifminute travel' and area of coverage per hour&

8/9/2019 Results of Poor Compaction & Types of Compacting Equipments

25/25

5. MANUALLY OPERATED

VIBRATORY PLATE COMPACTORS