Underground

Fill

þ       PS 1151

PS 1151 anti-washout admixture is a ready-to-use liquid cellulose-based admixture specially developed for cellular concrete, foamed grout, or foamed cement slurry placed under water. High-performance cement-based mixtures treated with PS 1151 anti-washout admixture exhibit superior resistance to washout of cement and fines by resisting blending with the water medium during placement. PS 1151 anti-washout admixture produces a high-performance cement-based mixture.

Features

Reduction in washout of cement and fines

Thixotropic action that provides stiffening after placement

Improved stability of cement-based mixtures during transport and placement

Benefits

Reduction and/or elimination of dewatering and associated costs

Reduced environmental impact

Superior and predictable in-place properties

Grouting

þ       Meyco Rock Bolt & Anchor Grout

MEYCO FIX RBA Grout is an non-catalyzed, multi-purpose, underground construction grout containing mineral aggregate. This portland cement based product is designed to be used for full encapsulation of tunnel and mine rock bolts and anchors; soil and rock stabilization; and void filing applications. MEYCO FIX RBA Grout is particularly suitable for installations requiring low permeability, high early strength development and very high corrosion resistance. MEYCO FIX RBA Grout may be mixed to flowable, plastic or thixotropic consistency to allow easy filling of down holes and overhead holes.

Features

Free of inorganic accelerators including chlorides or other salts detrimental to steel

Range of water addition from thixotropic to flowable without segregation

Early strength development

Low permeability

Benefits

Improved corrosion protection

Easily pumped at all consistencies

þ       Meyco™ Fix Flowcable

MEYCO Fix Flowcable special multicomponent rheoplastic admixture is used in cement-based grouts to reduce the mixing water requirements and produce a flowable, pumpable, thixotropic, non-shrink, non-segregation, impermeable, high-strength grout with any type of portland cement. MEYCO Fix Flowcable admixture is used for rock and ground support and stabilization, as well as grout used for the protection of post-tensioned cables in prestressed concrete and for full encapsulation of tunnel and mine rock bolts and anchors.

Features

When used in the recommended applications, MEYCO Fix Flowcable admixture produces a thixotropic grout with the following unique properties:

Low water-cement ratio

Bleedwater control

High-early strength*

Long potlife (open time)*

High ultimate strength*

* These parameters are dependent upon the type of cement used in the grout.

Benefits

Pumps and places more easily

Shrinkage compensated

Dense, compact and impermeable, ensuring maximum protection of steel members against corrosion caused by aggressive agents

Hydration Control

þ       Delvocrete 29

DELVOcrete 29 admixture is a unique, non-chloride chemical admixture that controls the dynamics of cement hydration by suspending the hydration process for hours or even days without affecting the quality of hardened shotcrete.

When DELVOcrete 29 liquid admixture is dispensed into wet or dry mixes at the batching plant, it fully stabilizes the hydration process by forming a protective barrier around the cement particles.

Features

Fully flexible delivery options for batched shotcrete

Complete use of wet and dry mixes

Higher early strengths

Always working with fresh concrete, up to 3 days

Benefits

Reduced waste disposal

No cleaning of pumps or pipes during work interruptions

Flexibility in allocating time, materials, manpower and equipment

Expensive bagged material can be replaced by economical jobsite mixes

Considerable savings of overall construction costs

Considerable reduction of rebound and dust

Impact / Abrasion Resistance

þ       Meyco Anvil-Mine

MEYCO Anvil-Mine cementitious/metallic aggregate topping is formulated to produce extended working time and extra heavy-duty protection against abrasion and impact. MEYCO Anvil-Mine topping can be either cast-in-place or sprayed using conventional shotcreting equipment.

Features

Up to eight times the abrasion resistance of concrete

Up to four times the impact resistance of plain concrete

High compression strength with lower modulus of elasticity than other equal compressive strength cementitious materials (less brittle and more resistant to dynamic loads)

High resistance to point loading

Excellent ductility and energy absorption capacity (toughness)

Distributes impact stress over greater area

High density

High slump consistency

Reduces bleeding of surface

Benefits

Minimizes shutdown time and provides ease of rehabilitation of key installations (simply apply over high wear areas)

Superior absorption rate to resist degredation by water, oil or solvents