Category: chemical

DESCRIPTION

ProMatrix 90 is a new generation superplasticiser for concrete. It contains polycarboxylate ether polymers and is specially formulated for ready-mix concrete where slump retention, high strength and durability are required in hot climates. The excellent dispersion effect makes ProMatrix 90 the ideal admixture for the ready-mix concrete industry. The ability to work with low water /cement ratios and still obtain extended slump retention allows for the manufacture of high quality concrete. ProMatrix 90 is free of chloride and complies with MNS ASTM C 494/C 494 M, and is also compatible with all cements meeting recognised international standards.

Dispensing

ProMatrix 90 is a ready-to-use admixture to be added to the concrete mix as a separate component. Optimal mixing water reduction is obtained if ProMatrix 90 is poured into the concrete mix right after the addition of the mixing water. Avoid adding the admixture to the dry aggregates. A separate dispenser and feed line must be used.

Recommended for: 

• faster mixing logistics during large jobs
• highly durable concret
• ready-mixed concrete
• mass concrete
• long distance transport
• pumped concrete
• hot weather concreting
• concrete with less water content than with conventional admixtures

Properties:

Supply From	Liquid
Colour	Light yellow
Specific Gravity	1.055±0.01
pH	6.5±1.5
Chloride	<0.005

Features & benefits: 

High water reduction	High early and ultimate strength s. Low permeability, high durability concrete.
High flowability	Ease of placing and compaction. No segregation
Superior slump retention	No retempering. Ease of delivery to point of placement
Low shrinkage and creep	Improve dimensional stability. Reduced risk of cracks.
Good cohesion	Ease of pumping. No bleeding
Good workability	Excellent surface appearance. Self-compacting concrete
Minimal bleed water	Excellent concrete quality.
High elastic modulus	Superior load bearing capacity

Dosage:

Dosage of ProMatrix 90 depends on the mix design, ambient conditions and degree of water reduction and workability required. ProMatrix 90 is dispensed at a rate of 1.0%-2.0% of cementitious material. Other dosages may also be used depending on the specific working conditions. Trial mixes should be made with job materials to determine the optimum dosage required for a specified job requirement.

Packaging:

ProMatrix 90 is available in 900KG IBCs or by bulk delivery.

Shelf life:

ProMatrix 90 can be stored for 12 months if stored at a temperature above 5ºC and in tightly sealed original containers. If frozen, thaw it and completely reconstitute by mild agitation. Do not use compressed air.

Precautions: 

Health: ProMatrix 90 does not contain any hazardous substances requiring labelling. It is safe for use with standard precautions followed in the construction industry, such as use of hand gloves, safety goggles, etc. For detailed Health, Safety and Environmental Recommendations, please consult and follow all instructions in the product Material Safety Data Sheet.

DESCRIPTION

Mastering underground construction challenges with MasterRoc SA167

The MasterRoc product range is comprised of market-leading innovations and application expertise for the tunneling and mining industries.

In addition to a wide range of products, our globally connected team assists our customers in selecting the right products and systems, providing the best, most cost-effective and complete solutions based on innovation and technology, allowing our customers to operate successfully and to the highest safety standards.

MasterRoc SA167 is a high performance alkali-free set accelerator designed for use in the wet and dry mix spraying process.  MasterRoc SA167 is a liquid additive whose dosage can be varied to the desired setting and hardening times.

Recommended uses:

MasterRoc SA167 is suitable for all applications where high early strength, high final strength, extremely large layer thickness in a single application and high slump (>200mm) are required:

• For temporary and final rock support linings
• In tunnels
• In mining
• Embankment stabilization

Features and benefits:

MasterRoc SA167 is the ideal accelerator for wet-mix sprayed concrete for rock support because 

The quick setting properties allow:

• Overhead layer thicknesses of 150mm in a single application (as with aluminate based accelerators).
• Works with even high slump (>200mm).
• Rapid work progress.

The unique formula:

• Provides good early strength development.
• Limits the decrease of final strength, associated with accelerators.

MasterRoc SA167 is a liquid product and thus:

• Provides easy handling, as well as easy and efficient addition to the sprayed concrete.
• Produces little dust and therefore a better working environment.

The alkali-free nature of the product:

• Improves safety, a major factor.
• Provides an improved working environment.

Reduces required handling precautions and hence improves economy: 

Evaluation of setting time and 24 hour strength characteristics (without addition of slump killing system), in a norm DIN mortar.

Initial Set	Final set	24hr Strength	Rating
2 min. 5 min. >10 min.	6-8 min. 8-12 min. >15 min.	18-20 MPa 12-15 MPa <10 MPa	good ok poor

Estimating data: 

The dosage of MasterRoc SA16 7depends on the temperature of concrete, air and substrate. Another important factor influencing the dosage, is the reactivity of the cement used. Depending on required setting time and early strength requirements, the consumption of MasterRoc SA167 normally ranges between 3-10% of the binder weight. Overdosing (>10%) may result in decreased final strength.

Packaging:

MasterRoc SA167 is available in 1400 KG IBCs and bulk.

Storage/shelf life:

• MasterRoc SA 167 must be stored at minimum +5°C and maximum +35°C (optimum temperature for storage and performance +20°C). Must be kept in closed containers made of plastic, glass fibre or stainless steel.
• MasterRoc SA 167 must not be stored in normal steel containers as the pH can cause corrosion that might affect the performance of the product.
• After the prolonged storage we recommend that MasterRoc SA 167 be always fully agitated prior to use by mechanical stirring or re-circulation pumping. Agitation by compressed air is not advised.
• If stored in tightly closed original containers under the above given conditions, MasterRoc SA 167 has a shelf life of 3 months. Periodical remixing can extend the shelf life up to 6 or more months.