Microcast 200
DE Fiberworks, Inc. - Concrete Fiber Reinforcement
563.340.7065

Microcast 200

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MICRO-CAST 200 fibers are very small diameter, fibrillated fibers manufactured from 100% virgin polypropylene resin and exceed the requirements of ASTM C 1116 “Standard Specification for Fiber-Reinforced Concrete and Shotcrete”, Type III Synthetic Fiber-Reinforced Concrete. They are specifically engineered for use in concrete as secondary reinforcement and controlling plastic shrinkage and settlement cracking. MICRO-CAST 200 fibrillated fibers are extremely small diameter that makes them perfect for precast, stucco, shotcrete, and architec- tural concrete. MICRO-CAST 200 fibers are manufactured to the requirements of the International Building Codes. MICRO-CAST 200 fibers are designed for early crack-control but they also do an excellent job of increasing the impact, shatter, and abrasion resistance of the concrete.
Micro-Cast 200Micro-Cast 200
Description

 

MICRO-CAST 200

 

FIBRILLATED MICRO-SYNTHETIC

Guidelines

MICRO-CAST 200 fibers are specifically engineered for use in concrete as secondary reinforcement, and for the purpose of controlling plastic shrinkage and settlement cracking. The minimum dosage rate for MICRO-CAST 200 fibers is 1.5 lbs. per cubic yard of concrete, unless otherwise specified. We recommend following ACI guidelines for control joint locations and details. Please consult DE Fiberworks for dosage rates for your application, design information, or more details when using MICRO-CAST 200 fibers..

 

Applications

 

MICRO-CAST 200 fibers may be used in all types of concrete and are ideal for the following applications:

Precast

Decorative Concrete

Architectural Concrete

Stucco

Non-magnetic applications

 

Product Description

 

MICRO-CAST 200 fibers are very small diameter, fibrillated fibers manufactured from 100% virgin polypropylene resin and exceed the requirements of ASTM C 1116 “Standard Specification for Fiber-Reinforced Concrete and Shotcrete”, Type III Synthetic Fiber-Reinforced Concrete. They are specifically engineered for use in concrete as secondary reinforcement and controlling plastic shrinkage and settlement cracking. MICRO-CAST 200 fibrillated fibers are extremely small diameter that makes them perfect for precast, stucco, shotcrete, and architec- tural concrete. MICRO-CAST 200 fibers are manufactured to the requirements of the International Building Codes. MICRO-CAST 200 fibers are designed for early crack-control but they also do an excellent job of increasing the impact, shatter, and abrasion resistance of the concrete.

 

Technical Information

 

Fiber Length 1/4” or 1/2”
Tensile Strength 40 – 60 ksi
Modulus of Elasticity 500 ksi
Fiber Denier 650 - 800
Specific Gravity 0.91
Absorption Nil
Melt Point 320oF (160oC)
Ignition Point 1094oF (590oC)
Alkali Resistance Excellent
Chemical Resistance Excellent

 

Advantages:

 

Reduces Plastic Shrinkage

Cracking

Improves impact, shatter, and abrasion resistance

Enhances durability and toughness

Cost Effective

Uniform Reinforcement

Always Positioned Correctly

 

MICRO-CAST 200

 

FIBRILLATED MICRO-SYNTHETIC

 

Mixing, Placing & Finishing

 

Mixing – MICRO-CAST 200 fibers are packaged in pre-measured water soluble bags designed to be introduced into the concrete mix before, during, or after batching other concrete materials. Care should be taken to make sure the fibers are not added to the tail end of a high slump mix. Mixing should conform to ASTM C 94 with a minimum of 75 revolutions of the drum at full mixing speed to ensure uniform distribution of the fibers.

 

Reinforcement Objective

 

To inhibit plastic and settlement shrinkage cracking prior to the initial set, and to reduce hardened concrete shrinkage cracking, improve impact and abrasion resistance, and enhance concrete toughness and durability. Provide entry level reinforcement used for shrinkage & temperature reinforcement.

Placing – MICRO-CAST 200 fibers can be pumped and placed using conventional equipment.

Finishing -Standard finishing equipment and techniques can be used when working with MICRO-CAST 200 fibers.

 

References

 

ASTM C 94 Standard Specification for Ready-Mixed Concrete Uniformity Requirements

ASTM C 1399 Average Residual Strength of Fiber Reinforced Concrete

ASTM C 1436 Standard Specification for Materials for Shotcrete

ASTM C 1609 Standard Test Method for Flexural Performance of Fiber Reinforced Concrete

ASTM C 1116 Standard Specification for Fiber-Reinforced Concrete and Shotcrete

ACI 302 Guide for Concrete Floor And Slab Construction

ACI 506 Guide for Shotcrete


Dave Edmundson, P.E.

 

dave@defiberworks.com

 

563-340-7065

 

Warranty and Limitation of Liability

This publication should not be construed as engineering advice. While the information is accurate to the best of our knowledge, DE Fiberworks does not warranty its accuracy or completeness. Product sold herein is of merchantable quality to seller’s standards and specifications. Seller’s warranty is limited to manufacturer’s product warranty and the recommended application and fitness for a particular purpose. In no event shall

DE Fiberworks be liable for any special, incidental, consequential, or exemplary damages.

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Did You Know?

Concrete is widely recognized as an extremely versatile, cost-effective construction material?

 

Concrete is widely recognized as an extremely versatile, cost-effective construction material. Yet it is also beset with some drawbacks that are inherent to its composition.  By generally accepted engineering standards, concrete is relatively brittle and lacks ductility.  Intertwined with these problems is concrete’s propensity to crack in both its plastic (early-age) and hardened (long-term) state.  Early-age cracks are microscopic fissures caused by the intrinsic stresses created when the concrete settles and shrinks over the first 24 hours after being placed.  Long-term cracking is in part caused by the drying shrinkage that transpires over time.  In either case, these cracks can jeopardize the overall integrity of the concrete and not allow it to maintain – or possibly ever attain – its maximum performance capability.

 

This is the basic reason reinforcement in concrete is required.  Irregular cracks are unsightly and difficult to maintain but generally do not affect the integrity of the concrete.  Joints in concrete slabs are simply pre-planned cracks that are created by forming, sawing, or tooling.  Concrete slabs that are designed for serviceability typically use reinforcement such as deformed reinforcing steel bars (rebar) or welded wire fabric (WWF) to hold cracks tight.  The primary function for the reinforcement is to maintain aggregate interlock for load transfer and improve joint stability.  Rebar and WWR do not inhibit the formation of cracks, but if properly positioned provide reinforcement once a crack has developed.  Fiber reinforcement can provide the same function, is distributed throughout the cross-section of the concrete and distributes the stresses attributed to shrinkage throughout the panel making the joints much more stable. This distribution of fibers provides a totally reinforced cross-section of concrete and changes the way the concrete works.