Product Data Sheet Show all documents

Parex Highway Rapidpave Cement

Ultra-Rapid Strength Gain Binder

Parex Highway Rapidpave Cement is an expertly formulated ultra-rapid strength gain binder, containing high quality cements and high-performance additives. When used to produce concrete in place of Ordinary Portland Cement, a rapid strength concrete, ideal for rapid repair and construction, is created. The product is perfect for volumetric concrete mixers supplying Pavement Quality Concrete into the highways sector where a rapid return to service is required. An early compressive strength of 35N/mm² is achievable at only 4 hours.

  • Binder used in place of Ordinary Portland Cement to produce a rapid setting concrete.
  • All mixing water is completely chemically bound, resulting in no water surplus. The water surplus that occurs with other cement types is the cause of shrinkage, cracking and warping.
  • Non-shrink when used in well-designed concrete.
  • High freeze-thaw resistance.
  • Not based on Ordinary Portland Cement.
  • Higher water demand than concrete with Ordinary Portland Cement which results in an improved yield.
  • Quick setting.
  • Ultra-rapid strength gain (compressive strength of 35N/mm² achievable at only 4 hours).
  • High ultimate strength.
  • Rapid return to service.
  • Suitable for marine or tidal zones.
  • Can be delivered and placed in remote locations.
  • Does not require a concrete plant to produce concrete.
  • No risks of concrete hardening in transit or being unsuitable at the time of placing.
  • Exact amount of concrete produced, zero waste.
  • No specialist tools or training required for the contractor.
  • Consistent quality, unlike Pavement Quality Concrete which can vary from load to load.
  • Reduced CO2 emissions. Specialist cement used is considered a green binder because of the following factors:
    • This cement is calcined at 1250°C (2250°F), whereas Ordinary Portland Cement is calcined at a temperature of 1500°C (2700°C).
    • The clinker is much softer compared to Portland clinker, which reduces the energy requirement during grinding.  
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Product Data Sheet Show all documents

Usage

Parex Highway Rapidpave Cement is used in place of Ordinary Portland Cement to create an ultra-rapid strength gain concrete, ideal for:
  • Situations that require a quick gain in early compressive strength and rapid return to service.
  • Airport runways, taxiways, aprons, aircraft stands, and floors of hangars.
  • Motorways, trunk roads, dual carriageways, and service roads.
  • Car parks, forecourts, loading bays and ramps that require early trafficking.
  • Ports, wharves, shipyards, and oil terminals.
  • Marine and tidal zones where access can be limited.
  • Industrial, manufacturing plants and fabrication facilities.
  • Rail structure and track bed replacement.
  • Floor slabs for warehouses, distribution centres, flex buildings and data housing centres.  

Advantages

  • Binder used in place of Ordinary Portland Cement to produce a rapid setting concrete.
  • All mixing water is completely chemically bound, resulting in no water surplus. The water surplus that occurs with other cement types is the cause of shrinkage, cracking and warping.
  • Non-shrink when used in well-designed concrete.
  • High freeze-thaw resistance.
  • Not based on Ordinary Portland Cement.
  • Higher water demand than concrete with Ordinary Portland Cement which results in an improved yield.
  • Quick setting.
  • Ultra-rapid strength gain (compressive strength of 35N/mm² achievable at only 4 hours).
  • High ultimate strength.
  • Rapid return to service.
  • Suitable for marine or tidal zones.
  • Can be delivered and placed in remote locations.
  • Does not require a concrete plant to produce concrete.
  • No risks of concrete hardening in transit or being unsuitable at the time of placing.
  • Exact amount of concrete produced, zero waste.
  • No specialist tools or training required for the contractor.
  • Consistent quality, unlike Pavement Quality Concrete which can vary from load to load.
  • Reduced CO2 emissions. Specialist cement used is considered a green binder because of the following factors:
    • This cement is calcined at 1250°C (2250°F), whereas Ordinary Portland Cement is calcined at a temperature of 1500°C (2700°C).
    • The clinker is much softer compared to Portland clinker, which reduces the energy requirement during grinding.  

Packaging

25kg, 454kg and 1000kg bags

Colour

Grey powder

Product Details

Product Information

Shelf life

25kg bags: 6 months from the date of manufacture.

Bulk bags (454kg and 1000kg): 3 months from date of manufacture.

Storage conditions

Store properly in cool, dry conditions in undamaged and unopened original sealed packaging.

Density

~2400kg/m³
Technical Information

Compressive strength

~35 N/mm² at 4 hours

(EN 12390)

Application

Application Information

Mixing ratio

To be determined by the user.

As a guide, to produce premium quality ultra-rapid concrete, a suggested ratio is water : 0/4mm sand : 4/20mm aggregate : binder = 1 : 3.3 : 6.6 : 3.3.

For each 25kg bag of Parex Highway Rapidpave Cement, the following proportions are therefore – 7.58 litres of water : 25kg of 0/4mm sand : 50kg of 4/20mm aggregate.

Ambient air temperature

Winter version = +5°C to + 20°C

Summer version = + 20°C to +35°C

Initial set time

~25 mins

Final set time

~30 mins

Application time

~20 mins
Consumption

Yield

Unit size (kg)

Mass of concrete produced (kg)

Volume of concrete produced (litres)

Volume of concrete produced (m³)

25

108

45

0.045

454

1960

817

0.817

1000

4320

1800

1.800

*as an approximate guide
Application steps

MIXING

The concrete shall be mixed in the appropriate proportions (confirmed through testing) for a period long enough to achieve a fully blended, homogeneous concrete. Batch sizes will depend on the equipment used and manufacturer’s guidelines should be followed.

APPLICATION

The mixed concrete should be placed and compacted in the same manner as Pavement Quality Concrete (PQC). Placing shall take place in a manner which avoids segregation and contamination of the concrete with extraneous matter. The concrete shall be fully compacted using poker vibrators.

CURING TREATMENT

Good concreting curing practices shall be followed. As soon as the surface has been finished, it shall be sprayed with a suitable curing compound (e.g. Sika® Antisol® E-20) following the manufacturer’s guidelines.

CLEANING OF EQUIPMENT

Clean all tools and application equipment with water immediately after use. Hardened/cured material can only be mechanically removed.Clean all tools and application equipment with water immediately after use. Hardened/cured material can only be mechanically removed.

 

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