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JET GROUTING - 32 Pages

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JET GROUTING

Catalog excerpts

TABLE OF CONTENTS • INDICE High Pressure Pump • Pompe ad alta pressione ^ |J |^ PUAAP Mixing Plant • Impianti di mescolazione Drill String • Batteria aste DRILL STRING

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When civil engineering works require soil improvement to build new structures or to restore the existing ones Jet Grouting is applied. Soil improvement consists in modifying and increasing the mechanical characteristic, the compressive strength, the modulus of elasticity and in the meanwhile decreasing the permeability of the natural soil. Jet Grouting is a modern, fast and effective method applied in soils and in weak rocks for the creation of deep foundation elements. With Jet Grouting, soil is mixed in situ directly with the stabilizer (Usually a water/ cement admixture) which is...

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Operative Phases It is carried out with traditional methods following the local soil conditions. Commonly rotary or roto-percussion drilling methods are used. Single or double fluid drill strings are usually employed in relation to the adopted J-G- method and in function of the required final result. For the drilling phase are generally used drill rigs able to reach depths of about 20,0 m. In particular applications can also be requested bigger drilling equipment able to drill up to 50-^60 m from ground More common drilling fluid is water, but in some cases can be used also water/ bentonite...

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CEMENT LINE Typical plant layout • Disposizione Kpica impanto VERTICAL CEMENT SILO Main applications Jet Grouting techniques are employed in a wide range of cases • Underpinning of existing structures; a) Dam and cofferdam cut-off walls; b) River embankments structural and waterproof cut-off walls c) Box shape underground structures. • Diaphragm walls gaps repairing. • Structural and/or waterproof bottom plugs, • Tunnel consolidation: a) Umbrella type consolidation; b) Consolidation of the excavation surface. • Slope consolidations: installation of strand anchors and/or self-drilling...

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JET GROUTING APPLICATIONS AND SYSTEMS APPLICAZIONI E METODI Dl JET GROUTING Main Jet Grouting Techniques The state of the art of the Jet Grouting technique requires the usage of bigger high pressure pumps in order to obtain bigger column diemeters. Nowadays, in relation to the specific technical result are mainly employed single [JET!) and double fluid (JET2) techniques. Single Fluid Technique (JET1) It is the most simple and popular jetting method. The drill/injection string consists of a battery of rods with a coaxial hole in which the grout flows at high pressure up to the injection...

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Performance Table SINGLE FLUID MONO FLUIDO DOUBLE FLUID

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CASAGRANDE RIGS FOR JET GROUTING PERFORATING CASAGRANDE PER JET GROUTING Kinematics type Extensions type Front trie wall Sliding lattice

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Fixed Fixed Fixed Fixed Pantograph Lattice Lattice Lattice Lattice Lattice n. 2 elements - L 9 m n. 2 elements ■ L 8.5 m n. 2 elements - L 9 m n. 3 elements ■ L 12 m

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HIGH PRESSURE PUMP POMPE AD ALTA PRESSIONE Cardanic transmission acting on flexible coupling and quadruple 1W chain with splash lubrication. 10 speed with mechanical clutch pneumatically operated and remote control pneumatic operated. Oil forced lubrication by oil gear pump. Cardanica operante su giunto parastrappi e catena quadrupla CAMBIO MECCANICO A 10 velocita, frizione meccanica con operatore pneumatico e comando remoto elettro-pneumatico. Lubrificazione forzata mediante pompa ad ingranaggi. TECHNICAL DATA Maximum flow rate Piston diameter Piston stroke Stroke rate - Internment Stroke...

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HIGH PRESSURE PUMP POMPE AD ALTA PRESSIONE Cardanlc transmission acting on flexible coupling and quadruple Vh" chain with splash lubrication. 10 speed with mechanical clutch pneumatically operated and remote control pneumatic operated. Oil forced lubrication by oil gear pump. Cardanica operante su giunto parastrappi e catena quadrupla A 10 velocitd, frizione meccanica con operatore pneumatico e comando remoto elettro-pneumatico. Lubrificazione forzata mediante pompa ad ingranaggi. TECHNICAL DATA Maximum pressure Maximum flow rate Piston diameter Piston stroke Stroke rate - Internment Stroke...

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HIGH PRESSURE PUMP POMPE AD ALTA PRESSIONE Transmission system with double pinion and crown helical gears. 10 speed with mechanical clutch pneumatically operated and remote control pneumatic operated. Oil forced lubrication by oil gear pump. CONTROL PANEL Control panel with "touch screen" monitor. Trasmlssione con sistema a doppio pignone e corona di tipo CAMBIO MECCANICO A 10 velocita, frizione meccanica con operatore pneumatico e comando remoto elettro-pneumatico. Lubrificazione forzata mediante pompa ad ingranaggi. Pannello di comando con monitor "touch screen" TECHNICAL DATA Maximum...

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HIGH PRESSURE PUMP POMPE AD ALTA PRESSIONE Transmission system with double pinion and crown helical gears. 10 speed with mechanical clutch pneumatically operated and remote control pneumatic operated. Oil forced lubrication by oil gear pump. CONTROL PANEL Control panel with "touch screen" monitor. Trasmlssione con sistema a doppio pignone e corona di tipo CAMBIO MECCANICO A 10 velocita, frizione meccanica con operatore pneumatico e comando remoto elettro-pneumatico. Lubrificazione forzata mediante pompa ad ingranaggi. Pannello di comando con monitor "touch screen" TECHNICAL DATA Maximum...

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MIXING PLANT TECHNICAL DATA Max. hourly mixing capacity Electronic load cells weighing system Total electric power Pump open impeller type Pump electric motor Tank capacity Electric motor WATER TANK BOOSTER PUMP Pump electric motor Electric motor Mixture components recording system on flash card DATI TECNICI Pesatura elettionica a celle di carico Potenza totale assorbita Pompa a girante aperta Mo tore elettrico pompa Capacita utile POMPA SOVRAUMENTAZIONE Motore elettrico pompa Serbatoio aria Motore elettrico Registrazione componenti miscela su flash card

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MIXING PLANT TECHNICAL DATA Max. hourly mixing capacity Electronic load cells weighing system Total electric power Pump open impeller type Pump electric motor Tank capacity Electric motor WATER TANK BOOSTER PUMP Pump electric motor Electric motor Mixture components recording system on flash card DATI TECNICI Pesatura elettionica a celle di carico Potenza totale assorbita Pompa a girante aperta Mo tore elettrico pompa Capacita utile POMPA SOVRAUMENTAZIONE Motore elettrico pompa Serbatoio aria Motore elettrico Registrazione componenti miscela su flash card

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