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pneumatic shotcrete concrete, pneumatic shotcrete concrete.

03 37 13 - Shotcrete

A. "Shotcrete" is defined as pneumatically placed concrete: A portland-cement concrete mixture conveyed through a hose and nozzle, and shot onto a surface at high

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SECTION 033713 - SHOTCRETE

Apr 10, 2009  Measure and mix shotcrete in accordance with requirements of [Division 03 Section "Concrete Reinforcing"] Division 03 Section "Cast-in-Place Concrete"]. EQUIPMENT.

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Best Practices of Using Shotcrete for Wall Fascia and ...

Internal air-void system (air content and spacing factor) of hardened shotcrete has significant influence on durability of shotcrete. Addition of air

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Shotcrete - Wikipedia

Shotcrete, gunite (/ ˈ ɡ ʌ n aɪ t /), or sprayed concrete is concrete or mortar conveyed through a hose and pneumatically projected at high velocity onto a

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Construction Specification 33—Shotcrete

Concrete, unless otherwise specified. Gradation shall be one of the three options specified by ACI 506R, table 2.1, unless otherwise specified. Admixtures, if

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Shotcrete pumps and related equipment - Concrete

neath the sealing plate, air forces ma-terial down and around the bottom bend of the U and up into the deliv-ery line. Wet-mix shotcrete Two types of pumps usually

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Shotcrete Concrete Flanges Clamps; Gunite Blast Fittings

Shotcrete Concrete Flanges Clamps; Gunite Blast Fittings - 430 We stock a variety of clamps, flanged reducers and shotcrete nozzles for wet and dry shotcrete

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Shotcrete Preconstruction Meeting Agenda

Items must be more securely fastened for shotcrete than for traditionally placed concrete. The shotcrete crew will refuse to place shotcrete in any area where

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Using Concrete Pumps for Shotcreting Concrete ...

Nov 01, 1995  Since a wet-shotcrete pump is merely a conventional concrete pump that propels concrete down the hose to a point where compressed air can be introduced, all the

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Reliable supply of portable compressed air for Shotcrete ...

Compressed air is an integral part of the shotcrete process, increasing the velocity at which the concrete leaves the nozzle. A reliable supply of high quality

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03 37 13 - Shotcrete

A. "Shotcrete" is defined as pneumatically placed concrete: A portland-cement concrete mixture conveyed through a hose and nozzle, and shot onto a surface at high speed by means of air pressure. 1.05 SUBMITTALS A. Refer to Section 01 33 00 - Submittal Procedures, and Section 01 33 23 -

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SECTION 44 – SHOTCRETE, CAST CONCRETE CHANNEL

SECTION 44 – SHOTCRETE, CAST CONCRETE CHANNEL LINING, AND GROUTED COBBLE 44.2 07/24/01 and at such distance that the stream of flowing material will impinge at approximately right angles to the surface being covered and that excessive impact will be avoided. Pneumatic pressure at the machine shall not be less than thirty pounds per square ...

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Sika® Air-260 Shotcrete Admixtures

Usage. Sika ® Air-260 is designed for use in exterior concrete such as highway paving, curb and gutters, sidewalks, driveways, slabs, walls, or other areas needing protection from freeze/thaw damage or the harmful effect of de-icing salts. Sika ® Air-260 is effective in increasing the workability of the concrete, especially in lean or harsh mixes.

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STRUCTURE magazine Shotcrete Today – Not Your Father’s ...

Shotcrete is simply a placement method for concrete. Early shotcrete equipment conveyed dry concrete materials via air through a flexible delivery hose and added water at the exit nozzle, in effect making low water/cement ratio (w/cm) concrete immediately before placement.

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SECTION 44 SHOTCRETE, CAST CONCRETE CHANNEL

Section 44 – Shotcrete, Cast Concrete Channel Lining, And Grouted Cobble 44.2 1/1/16 Pneumatic pressure at the machine must not be less than 30 psi when the length of hose does not exceed 100 feet. Pressure must be increased 5 psi for each additional 50 feet of hose

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Sika® Air-360 Shotcrete Admixtures

Usage. Sika ® Air 360 is designed for use in exterior concrete such as Roller-Compacted Concrete (RCC), highway paving, curb and gutters, sidewalks, driveways, slabs, walls, or other areas needing protection from freeze/thaw damage or the harmful effect of de-icing salts. Sika ® Air 360 is effective in increasing the workability of the concrete, especially in lean or harsh mixes.

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SECTION 03 37 13, SHOTCRETE - Veterans Affairs

This section specifies the requirements for materials, proportioning, and application of shotcrete using either dry-mix or wet-mix process. DEFINITION. Mortar or concrete pneumatically projected at high velocity onto a surface; also known as air-blown mortar; also pneumatically applied mortar or concrete, sprayed mortar and gunned concrete.

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Shotcrete or Sprayed Concrete or Gunite -Properties ...

Shotcrete or sprayed concrete is also called as gunite or shotcrete is used for rapid concrete construction. Shotcrete is used for repair of damaged buildings, underground construction such as storage reservoir, tunnel linings as well as for new constructions. Properties, materials and applications of sprayed concrete is discussed.

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Reliable supply of portable compressed air for Shotcrete ...

Compressed air is an integral part of the shotcrete process, increasing the velocity at which the concrete leaves the nozzle. A reliable supply of high quality air is essential to achieving a high shotcrete velocity and good compaction. This ensures denser concrete that will be less permeable and have a greater compressive strength.

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Shotcrete Concrete Flanges Clamps; Gunite Blast Fittings

Shotcrete Concrete Flanges Clamps; Gunite Blast Fittings - 430 We stock a variety of clamps, flanged reducers and shotcrete nozzles for wet and dry shotcrete applications. These full flow, heat treated hose barbs are for users who prefer to do a temporary repair of non critical concrete, plaster, or grouting hose; New-Line is not ...

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SHOTCRETE REPAIRS - NCDOT

Use a blowpipe to facilitate removal of free surface water. Only oil-free compressed air is to be used in the blowpipe. The time between removal of deteriorated concrete and applying shotcrete shall not exceed 5 days. If the time allowance exceeds 5 days, prepare the surface at the direction of the Engineer before applying shotcrete.

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Freeze/Thaw Durability of Shotcrete Concrete Construction ...

The American Concrete Institute's "Recommended Practice for Shotcreting" (ACI 506-66: revised 1983) cautions that it is not feasible to entrain air in dry-mix shotcrete. However, air-entraining admixtures may be used in many wet-mix applications. To entrain a given percent of air in the shotcrete as placed, ACI 506 recommends about twice that ...

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Will dry-mix shotcrete resist ... - Concrete Construction

Feb 01, 1991  We have a repair job for exterior concrete where we plan to use dry-mix shotcrete. The structure will be exposed to freezing and thawing. The engineer says air can't be entrained in dry-mix shotcrete and he questions whether the repairs will be durable under freeze-thaw conditions.

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Civil Guruji - What is Shotcrete? Shotcrete vs Concrete ...

What is Shotcrete? Shotcrete vs Concrete Types of Concrete Wet mix vs Dry mix By CivilGuruji CALL NOW :- 9111001234 For Corporate Training...

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Construction Specification 33—Shotcrete

Concrete, unless otherwise specified. Gradation shall be one of the three options specified by ACI 506R, table 2.1, unless otherwise specified. Admixtures, if specified, shall meet the requirements indicated. Nonchloride chemical admixtures shall conform to ASTM C 494. Air

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STRUCTURE magazine Shotcrete Today – Not Your Father’s ...

Shotcrete is simply a placement method for concrete. Early shotcrete equipment conveyed dry concrete materials via air through a flexible delivery hose and added water at the exit nozzle, in effect making low water/cement ratio (w/cm) concrete immediately before placement.

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Chapter 2 Types of Shotcrete and Applications Corps of ...

somewhat less than dry-mix shotcrete. (4) The use of air-entraining admixtures (AEA) in shotcrete is practical only in wet-mix shotcrete. When batched properly, AEA forms an air-void system suitable for providing frost resistance to wet-mix shotcrete. The formation of an air-void system in dry-mix shotcrete

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Best Practices of Using Shotcrete for Wall Fascia and ...

Internal air-void system (air content and spacing factor) of hardened shotcrete has significant influence on durability of shotcrete. Addition of air entraining admixture results in -distributed entrained air rather than entrapped airwell . Freeze-thaw resistance of shotcrete is improved with increasing of air content and decreasing of spacing

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VA 03 37 13 Shotcrete - WBDG

and application of shotcrete using either dry-mix or wet-mix process. 1.2 DEFINITION A. Mortar or concrete pneumatically projected at high velocity onto a surface; also known as air-blown mortar; also pneumatically applied mortar or concrete, sprayed mortar and gunned concrete. 1.3 RELATED WORK

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SHOTCRETE REPAIRS (8-13-04) 1.0 SCOPE OF WORK

SHOTCRETE REPAIRS (8-13-04) 1.0 SCOPE OF WORK This work consists of completely removing deteriorated and disintegrated concrete from substructure bent caps, columns, and struts in reasonably close conformity with the lines, depth and details shown on the plans, described herein and as established by the Engineer.

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Sika® Air-360 Shotcrete Admixtures

Usage. Sika ® Air 360 is designed for use in exterior concrete such as Roller-Compacted Concrete (RCC), highway paving, curb and gutters, sidewalks, driveways, slabs, walls, or other areas needing protection from freeze/thaw damage or the harmful effect of de-icing salts. Sika ® Air 360 is effective in increasing the workability of the concrete, especially in lean or harsh mixes.

Get Price

Shotcrete or Sprayed Concrete or Gunite -Properties ...

Shotcrete or sprayed concrete is also called as gunite or shotcrete is used for rapid concrete construction. Shotcrete is used for repair of damaged buildings, underground construction such as storage reservoir, tunnel linings as well as for new constructions. Properties, materials and applications of sprayed concrete is discussed.

Get Price

SECTION 03 37 13, SHOTCRETE - Veterans Affairs

This section specifies the requirements for materials, proportioning, and application of shotcrete using either dry-mix or wet-mix process. DEFINITION. Mortar or concrete pneumatically projected at high velocity onto a surface; also known as air-blown mortar; also pneumatically applied mortar or concrete, sprayed mortar and gunned concrete.

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ITEM 583.02000008 – SHOTCRETE FOR STRUCTURAL ...

ITEM 583.03000008 - SHOTCRETE FOR STRUCTURAL REHABILITATION – WITH REINFORCEMENT BAR ENCASEMENT Page 1 of 8 12/12/18 . DESCRIPTION . Work. The work shall consist of removal and disposal of unsound structural concrete and replacement with shotcrete where indicated in the contract documents and where ordered by the Engineer.

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UFGS 03 37 13 Shotcrete - WBDG

DIVISION 03 - CONCRETE SECTION 03 37 13 SHOTCRETE 02/18 PART 1 GENERAL 1.1 SCOPE 1.1.1 Work Specified 1.1.2 Unit of Measure 1.2 REFERENCES 1.3 DEFINITIONS ... Standard Test Method for Air Content of Freshly Mixed Concrete by the Pressure Method ASTM C309 (2019) Standard Specification for Liquid Membrane-Forming Compounds for Curing Concrete

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Shotcrete, Gunite, and Concrete Hose - New-Line

Shotcrete, Gunite, and Concrete Hose - MCC. Our Allcrete hose is meant to last and has proven itself as an industry leader - offering greater durability and lower overall replacement costs. It is used to conduct wet cement, plaster, grout, wet shotcrete, and concrete to building structures, dams, tunnel faces, swimming pools, or construction sites.

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Shotcrete Preconstruction Meeting Agenda

Items must be more securely fastened for shotcrete than for traditionally placed concrete. The shotcrete crew will refuse to place shotcrete in any area where loose rebar or embedded items are discovered. The special inspector will test every area to ensure no movement will occur during shotcrete placement. Forms must be tight and unyielding.

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Shotcrete: Properties, Applications, Advantages and ...

May 17, 2021  3: The shotcrete is consolidated by the impact of a high-velocity whereas the conventional concrete is consolidated by vibration. The shotcrete process not only increases the cement content but also brings the distinct air-void systems that affect the durability of the shotcrete.

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