Sprayed Concrete Lining - TfL consultations

Application of Tunnel Lining: Remote controlled robots are used to spray concrete against the tunnel wall, a process repeated to build up the tunnel lining.

Learn More

Wet Mix Concrete Spraying Equipment - Normet

Spraymec Alpha 1430PC is a diesel hydraulic mobile concrete sprayer mounted on truck designed for tunnel profiles up to 14 m in height and 24 meters in width. The new NSP 30 concrete pump has a theoretical maximum pumping capacity of 30 m³/h.

Learn More

concrete spraying machine SSB 14 - Filamos

Concrete Spraying Machines (Gunite Machines) SSB 14 / SSB 24 for spraying of concrete and shaft construction, and collector and tunnel construction.

Learn More

Application Of Dry Mix Concrete Gunite Shotcrete Spraying

Photos of Dry Mix Concrete Gunite Shotcrete Spraying Machine For Mining. 1. Normally packed with wooden box, wooden frame but according to your demands. 2. Handling time: Within 2 week. But if the model you asked are in stock, the warehouse will arrange delivery within 3 days.

Learn More

PDF CONCRETE SikaFiber® TECHNOLOGY

resistance, are easily added to the concrete mix during its production. If a fire breaks out, e.g. in a tunnel, the synthetic fibres melt within the concrete and create a capillary system through which the water vapour pressure can be relieved. Concrete spalling is is significantly reduced or even prevented

Learn More

Waterproofing - Australia

Technologies - Waterproofing & Water Management An innovative approach to tunnel waterproofing. MasterSeal 345 offers an innovative approach to waterproofing in underground construction.Designed for ease of application, the spray applied waterproofing membranes make up a continuous waterproofing system and are formulated to work in combination with sprayed concrete and in-situ concrete to

Learn More

High Pressure Grouting for Groundwater Ingress Control in Rock

Risk of pollution from tunnels transporting sewage, or other hazardous Cement grout can only permeate into cracks and joints by applied pump pressure.

Learn More

The controversial plan to tunnel beneath Stonehenge - BBC

The precise method of tunnelling hasn't yet been determined, but it's a choice between two techniques: a conventional mining or excavation process that uses a concrete spray to form the tunnel

Learn More

Rolling Plains Construction, Inc. - Henderson, Colorado

Rolling Plains Construction was incorporated in Colorado in September of 1984. Starting out with the application of Spray Applied Fireproofing, then expanding applications to include Spray Thermal / Acoustical Insulations, Lightweight Insulating Concrete Roof decks, and Industrial Fireproofing.

Learn More

PDF Waterproofing - UGC

Tunnel Linings Enhanced opportunities. The spray-applied membrane facilitates the construction of monolithic, single-shell tunnel linings using permanent sprayed concrete. Recent projects adopting this approach have shown signifi cant project savings over the double-shell method. BASF can assist you with this design concept.

Learn More

Protecta Evo Tunnel - Do It Yourself Pest Control Supplies

The Protecta Evo Tunnel provides tamper-resistant coverage of a variety of rat and mouse traps. It opens with an EVO key and they can be placed indoors or outdoors. Protecta Evo Tunnel is both low and discreet and able to accommodate two Trapper R-Rex rat snap traps or two Trapper T-Rex IQ rat snap traps that are secured into the Evo tunnel base. It also provides covers for mice sized traps

Learn More

Shotcrete and Concrete Spraying Equipment and Chemicals

Concrete Spraying Equipment. Our mobile sprayers are the result of over 50 years of experience in underground works and of close partnerships with tunnelling and mining customers from across the globe. Spraymec models are available with an electro- or diesel-hydraulic configuration and an optional on-board compressor. Concrete Logistics Equipment

Learn More

2-1/8" X 12-1/4" One Piece SDS-MAX Tunnel Bit

2-1/8" X 12-1/4" One Piece SDS-MAX Tunnel Bit. Milwaukee's one piece carbide tipped tunnel bits are ideal for drilling large holes where the depth of the hole exceeds the practicality of a core bit. These tunnel bits come in diameters ranging from 1-1/2" to 3-1/8" with overall lengths of 12-1/4", 22" or 39".

Learn More

PDF] Intelligent Detection for Tunnel Shotcrete Spray

Shotcrete spray is an indispensable process in tunnel construction. At present, the construction of tunnels in China is mainly depend on labor or mobile concrete sprayer, which has lots problems like time-consuming, low precision, and labor intensive. An intelligent detection method for tunnel shotcrete spraying is proposed in this article.

Learn More

Mining Equipment | Tunnel Engineering | Shotcrete | Fibo

The concrete materials of sand, aggregate, cement, water and chemicals are mixed in a shotcrete smart mixer. The batched concrete is then put in the spray machine hopper. The spray machine is usually robotic and uses compressed air to spray the concrete onto the tunnel's sides or mine.

Learn More

A Practical Approach to Tunnel Design for Fire Loads

Therefore, it can only withstand a single fire after which it has to be removed and replaced. The structural concrete is deemed to remain undamaged. An example of a rail tunnel with a cementitious fire protection coating is the 8-km long Groene Hart tunnel in the Netherlands, which contains both cut-and-cover and bored lengths.

Learn More

Tunnel Products - High Density SFRMs for protection of

Proven durability with over 30 years of service. Easily applied on complex shapes and tunnel profiles. One-off application for the life of the tunnel. Prevents concrete spalling in the event of fire. Lightweight formulation results in reduced dead loads (approximately one-third that of concrete) Easily repaired if damaged.

Learn More

MasterSeal sprayable concrete waterproofing

MasterSeal 345 membrane is a sprayable membrane for waterproofing concrete structures and water management. MasterSeal 345 membrane is spray-applied between layers of sprayed or cast-in-place concrete or as a stand-alone membrane. MasterSeal 345 membrane exhibits high bond strength to the substrates on both sides of the membrane with good

Learn More

BEST SPRAYER FOR CONCRETE SEALER

26 Oct 2018 When it comes time to apply a concrete sealer a popular application tool is a sprayer. Sprayers can range from garden variety pump up sprayers 

Learn More

In a leaky underwater rail tunnel, workers race against time

Crumbling Rail Tunnel Amtrak workers perform tunnel repairs to a partially flooded train track bed, Saturday, March 20, 2021, in Weehawken, N.J. With a new rail tunnel into New York years away at best, Amtrak is embarking on an aggressive and expensive program to fix a 110-year-old tunnel in the interim. (AP Photo/John Minchillo)

Learn More

PDF Cathodic Protection of a 1.2km long Harbour Tunnel

tunnel to achieve its required life with minimal ongoing maintenance. This involved the repair of damaged concrete, encapsulation of mild steel bolts and application of cathodic protection (Figure 2, 3). During a scheduled shutdown period, extensive repair works were undertaken utilising spray grouting. These works were performed by

Learn More