Infrastructure remains one of the most critical aspects of the Singaporean economy. Regardless of whether this is about residential, civil or commercial construction, there is no doubt that the city is expanding, providing outstanding opportunities for civil engineers.

A consequence of this growth is more examples of civil engineers working within tricky environments. This could include underwater, in sewers or near other corrosive chemicals. Take underwater applications, for example.

Building underwater assets around piles, dams, slipways or pillars requires products built to last and capable of providing ideal outcomes for both civil engineering businesses and clients; this might be where we can be of assistance.

As a well-known and respected part of the Singaporean civil engineering landscape, we have the technology and expertise to support your underwater epoxy grouting needs. As one of our four leading business areas, we are constantly working to provide the ideal solutions to ensure every angle is covered.

What underwater epoxy grouting do we specialise in?

Over the past decades, we have built a solid knowledge of underwater epoxy grouting applications in the civil engineering sector. As such, when businesses need grout for saline and sulphate conditions, we have the tools and products to support project goals.

We specialise in underwater epoxy grouting, which is specially designed for filling voids and is perfect for use across many underwater environments, including:

• Cable Tunnel
• Piles
• Dams
• Slipways
• Pillars
• Wharves

Underwater Epoxy Grouting (Epoxy Resin) Product

EG-UW

It is ready to use cementitious grout that can be used for applications underwater. The grout, when properly mixed, will have no significant ‘wash out’ of the cement phase.

It is a blend of Portland cement, carefully selected and graded aggregates, and admixtures, enabling it to achieve excellent flow, non-wash-out characteristics, and high compressive strength.

Uses:

It can be used for free-flowing or pumped grout applications underwater, for reinstating concrete:

• Bridge columns
• Pillars
• Piles
• Slipways
• Dams

Advantages:

When placed underwater, there is no significant ‘wash-out’ of the cement phase.

• Effectively displaces water
• Shrinkage compensating properties
• High early & 28 day strengths
• Do not segregate or bleed
• Good impact, vibration and thermal resistance
• Non-corrosive to steel or iron
• Complies with MP20-Part 3 Class A Grout

EG-53

It is a pourable, high-density mortar based on a 2-component solvent-free epoxy resin containing fine fillers. It is highly insoluble in water and readily displaces water enabling it to be employed in wet and underwater applications.

Uses:

It may be used for underwater epoxy grouting work. Excellent adhesion to clean water immersed concrete, stone masonry, brick, wood or steel surfaces. Highly insoluble in water and safe for specialist diver use. Used for injection of cracks 0.5mm to 40mm wide underwater (cracks not conducting a water flow under pressure). Ideal for pile jacketing using prepacked aggregate in formwork. Mixed with 30% by volume sand, a high build paint is formed that is easy to apply underwater. It may be used to grout starter bars and bolts for underwater construction work. The material may also be used as a bonding bridge for underwater concreting and as a pipeline jointing material.

Advantages:

• Applicable in wet, underwater or marine applications.
• Applicable at low temperatures.
• High mechanical strengths.
• Highly insoluble in water and suitable for application by specialist divers.
• Supplied in factory proportioned units.
• Shrink free.
• Excellent chemical resistance to water, seawater, wastewater, sewage, fuels, oils, dilute acids, and alkalis.

FF EG UW

It is based on Portland cement, graded aggregate and chemical additives, which impart controlled expansion in the plastic state. It is used for free flow or pumped grouting applications underwater or in tidal zones. There is no significant “wash-out” of the cement paste, and it displaces water when used in submerged conditions.

Recommended Uses:

• Bridge columns
• Quarry pillars
• Concrete piling
• Shipways
• Dams
• Wharf columns

Features & Benefits:

• The gaseous expansion system compensates for shrinkage and settlement in the plastic state.
• It can be dry-packed, rammed, trowelled, poured and pumped.
• Economical, low in-place cost.
• Ready to use, pre-mixed, requires only the addition of water.
• No metallic iron content to cause staining.
• A lower water/cement ratio reduces drying shrinkage, increases durability and reduces permeability.
• When used in fluid consistency, excellent flow characteristics will fill intricate cavities.
• Complete void filling resulting from the gaseous expansion in the plastic state.
• Displaces water effectively.

MF-UW 88

Features & Benefits:

• Shrinkage compensated – continues to retain filled volume.
• Non-wash out
• – no significant cement wash out underwater.
• – gains full strength even underwater.
• Free-flowing – flows easily, even in gaps as narrow as 20mm, to facilitate the complete filling of voids.
• Prepacked – no batching or blending errors. Consistency in performance from batch to batch.
• Dense micro structure – resists water ingress. Protects steel.
• High early and final strengths – early load transfer and rapid installation.
• High bond strength – primer is not required to achieve a good bond.
• Iron-free – no deterioration of grout due to rust expansion.

MF-UW 16

It is a high-density high-performance epoxy-based grouting system designed for structural applications in submerged or water affected conditions. It is a solvent-free, two-component system with a high flow capability.

Recommended For:

• Areas requiring epoxy grouting below the water level and a moisture insensitive bond to the concrete substrate
• Structural repair of wharf piles
• Base plates and machinery grouting
• Crane rails and tight clearances
• Exterior grouting and repair applications
• Coating structures (e.g. boat ramps) are affected by tidal changes during applications

Features and Benefits:

• High early and ultimate strengths
• High bond strength to steel and concrete correctly prepared
• Supplied in pre-measured volumes eliminating the need for on-site measuring and ensuring product success
• Easily pumped through suitable equipment
• Displaces water
• Excellent chemical resistance against oils, mineral acids, seawater, fuels and alkali solutions
• Resistance to vibration and high repetitive dynamic loads
• Solventless – shrink free

EX-UW

It is used for free flow or pumped grouting applications underwater or in tidal zones. There will be no significant ‘wash-out’ of the cement phase. Applications include bridge columns, quay pillars, concrete piling, slipways and dams. Formulated anti-wash out, specialist grout for underwater epoxy grouting applications.

It is supplied as a ready to use powder. The addition of a controlled amount of clean water produces a free-flowing grout. The grout exhibits exceptional resistance to ‘washing-out’ of the cement phase when placed in stationary or moving water.

It is a blend of cement, graded fine aggregate and chemical additives which impart controlled expansion, water reduction and non-wash-out characteristics. The aggregate grading minimises segregation and bleeding whilst assisting the flow characteristics. The maximum aggregate size for pumping is 1 mm.

Advantages:

• No risk of significant ‘wash-out’ of cement phase when placed underwater
• Displaces water effectively
• The gaseous expansion system compensates for shrinkage and settlement in the plastic state.
• High early and ultimate strength and exceptional resistance to freeze-thaw cycling ensure the durability of the hardened grout.
• Chloride free
• Pre-packaged needing only on-site addition of water

EX-EP

It is a two-component, finely filled, low viscosity, epoxy grouting. Its high density displaces water to enable high-performance underwater suitability. The components are supplied in the correct mix proportions designed for whole pack mixing so that flow and mechanical properties are consistent.

It is a free-flowing grout where the mechanical properties of the hardened grout must be of the highest order. It is suitable for underwater epoxy grouting work and the repair of water immersed concrete structures.

Features:

• Excellent adhesion to water immersed concrete, masonry or brick surfaces
• High density ensures complete water displacement
• High compressive, tensile and flexural strengths
• Cures with negligible shrinkage
• Pre-measured components allow easy mixing, and free-flowing properties ensure speed of application