Markham (Sheffield) Ltd

Product Hire and sales for the concrete and refractory spraying industries.

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Telephone Enquiries 01909 730861

Overview of Products

Gunite Machines (for dry spray Shotcrete)

Gunite is a trade term for dry-mix Shotcrete (or dry spray Shotcrete). The dry mix method involves placing the dry ingredients into a hopper and then conveying them pneumatically through a hose to the nozzle. The nozzleman controls the addition of water at the nozzle. The water and the dry mixture is not completely mixed, but is completed as the mixture hits the receiving surface. This requires a skilled nozzleman, especially in the case of thick or heavily reinforced sections. Advantages of the dry mix process are that the water content can be adjusted instantaneously by the nozzleman, allowing more effective placement in overhead and vertical applications without using accelerators. The dry mix process is useful in repair applications when it is necessary to stop frequently, as the dry material is easily discharged from the hose. Gunite is widely used in the Refractory industry where the sand, cement and aggregates are replaced with refractory materials and then sprayed. Our range of sprayed concrete machines covers a wide range of applications from low value refractory applications to high volume civil construction. Typical Gunite applications are such as:- swimming pools, refractory installation, furnace spraying, repair for bridges, walls, columns, beams, slabs, sewers, channels, piers and Gunite seawalls, Sand & gravel backfill, Civil & Infrastructure Projects, Mines, Tunnel Lining, Bank or Slope Stabilization

Shotcrete Machines (for wet spray Shotcrete)

Wet-mix Shotcrete involves pumping of a previously prepared concrete, typically ready-mixed concrete, to the nozzle. Compressed air is introduced at the nozzle to impel the mixture onto the receiving surface. The wet-gun procedure generally produces less rebound, waste (when material falls to the floor), and dust compared to the dry-mix procedure. The greatest advantage of the wet-mix process is that larger volumes can be placed in less time. Typical Shotcrete applications are such as:- swimming pools, refractory installation, repair for bridges, walls, columns, beams, slabs, sewers, channels, piers and Gunite seawalls, Sand & gravel backfill, Civil & Infrastructure Projects, Mines, Tunnel Lining, Bank or Slope Stabilization.

Mixing Machines.  Batch Mixers and Continuous Mixers

For the mixing of various materials such as refractory concrete, civil concrete, mortar, render, plaster, grout, self levelling floor screeds, traditional sand and cement floor screeds and resin based materials.

Plaster, Render & Mortar Machines

We have a large and varied range of equipment for plaster mixing, plaster spraying, skim coat spraying, render mixing, render spraying, mortar mixing, mortar pumping, mortar spraying and pressure pointing, in 415V, 230V 110V and diesel driven options.

Grout Mixing and Pumping Machines

For the mixing and / or pumping of grout for various applications such as wall stabilising, tunnel lining, water proofing, void filling, ground consolidation, bearing seating, column base plates, machine bases, grout anchors, foundation jacking, slurry grouting amongst just a few.

Floor Screed Machines

These machines are typically classed as either traditional sand and cement screed machines of self levelling screed machines. We have a range of equipment for mixing and pumping traditional sand and cement screed, cementitious self levelling screed and flowing screed such as Calcium Sulphate screed or Anhydrite screeds.  For over 20 years we have provided a supervisor along with our equipment so that our customer has complete piece of mind when it comes to pumping screed.