Metakaolin - Sikacrete® M-100

Metakaolin Powder

Sikacrete® M-100 is highly reactive metakaolin pozzolan for portland cement concrete, grouts and mortars applications. Sikacrete® M-100 meets the chemical requirements of ASTM C-618, Class N pozzolan.

How it works: Sikacrete® M-100 is a pozzolanic material, it is produced by thermally activating kaolin clay to produce an amorphous and chemically reactive material. Unlike other supplementary cementitious materials like flyash, slag and silica fume, Sikacrete® M-100 is not a by-product, it is specifically manufactured to its specification that improve the properties of concrete. The average particle size of Sikacrete® M-100 is 5 μm. Pozzolanic action: Sikacrete® M-100 reacts with the free lime, Ca (OH)2 produced during the hydration process of cement to produce Calcium Aluminates and additional Calcium Silicate hydrates which is responsible for the strength of the cementitious mixture or concrete. Void Reduction: The fine particles of Sikacrete® M-100 fill the tiny voids and capillary pores within the cement matrix and significantly reduce porosity to produce an extremely dense and impermeable concrete. Advantages:

• Increased early and later age compressive and flexural strength, which allows flexibility in structural design and allows early stripping of forms.
• Increased resistance to bleeding and segregation.
• Improved abrasion and erosion resistance, which increases concrete durability in hightraffic areas
• Reduced permeability, which increases durability, resists chemical attack and increases service life of concrete.

• Improved corrosion resistance, due to reduced chloride ingress in concrete.
• Improved concrete performance in freeze thaw conditions.
• Reduced deleterious expansions in concrete due to alkali-silica reaction.
• Produces lighter color concrete due to its creamy white color.
• Reduced efflorescence.

Sikacrete® M-100 does not contain any calcium chloride nor any other intentionally added chloride containing ingredients.

Usage

Sikacrete® M-100 is recommended for all high performance, high strength concrete and cementitious applications. Sikacrete® M-100 is highly beneficial for concrete that needs to resist water and chemical ingress and concrete required to resist mechanical abrasion. Due to its cream white color, Sikacrete® M-100 is also suitable to produce colored concrete and architectural precast concrete products.

Advantages

How it works: Sikacrete® M-100 is a pozzolanic material, it is produced by thermally activating kaolin clay to produce an amorphous and chemically reactive material. Unlike other supplementary cementitious materials like flyash, slag and silica fume, Sikacrete® M-100 is not a by-product, it is specifically manufactured to its specification that improve the properties of concrete. The average particle size of Sikacrete® M-100 is 5 μm. Pozzolanic action: Sikacrete® M-100 reacts with the free lime, Ca (OH)2 produced during the hydration process of cement to produce Calcium Aluminates and additional Calcium Silicate hydrates which is responsible for the strength of the cementitious mixture or concrete. Void Reduction: The fine particlesof Sikacrete® M-100 fill the tiny voids and capillary pores within the cement matrix and significantly reduce porosity to produce an extremely dense and impermeable concrete. Advantages:

• Increased early and later age compressive and flexural strength, which allows flexibility in structural design and allows early stripping of forms.
• Increased resistance to bleeding and segregation.
• Improved abrasion and erosion resistance, which increases concrete durability in hightraffic areas
• Reduced permeability, which increases durability, resists chemical attack and increases service life of concrete.

• Improved corrosion resistance, due to reduced chloride ingress in concrete.
• Improved concrete performance in freeze thaw conditions.
• Reduced deleterious expansions in concrete due to alkali-silica reaction.
• Produces lighter color concrete due to its creamy white color.
• Reduced efflorescence.

Sikacrete® M-100 does not contain any calcium chloride nor any other intentionally added chloride containing ingredients.

Packaging

Sikacrete® M-100 is available in 40 lb. (18.1 kg) repulpable bags, 2200 lb. (1000 kg) super sacks and bulk delivery.

Color

Creamy White

Product Details

Product Information

Shelf Life

Shelf life when stored in dry warehouse conditions above 35 °F (2 °C) is 24 months.

Storage Conditions

Sikacrete® M-100 should not exposed to wet or moist conditions, this can cause hardening of the material. Once hardened, the material is not suitable for use in concrete.

Specific Gravity

Approx. 2.6

Application

Application Information

Mixing

Sikacrete® M-100 may be stored in bulk storage in a cement silo and be batched in the same manner as bulk cement. The 40 lb. bags of Sikacrete® M-100 are repulpable or shredable bags, these bags are intended to be added directly to central or truck mixer without opening. The bags are designed to disintegrate through a combination of wetting and grinding the paper during concrete mixing.

Limitations: Do not introduce repulpable bags into concrete mixes with low water cementitious ratios and smaller size aggregates as these mixes may not develop sufficient mixing energy to fully repulp the bags. Always determine repulpability of bags by pretesting mix designs and batch sequence.

Compatibility with cement and other admixtures: Sikacrete® M-100 is compatible with all known portland cements manufactured under ASTM specifications. The low water cement ratios typically specified for concrete containing metakaolin make the use of a high range water reducer, such as a ViscoCrete® or a Sikament® product essential in most applications. Sika recommends the use of Sika air entraining admixtures where air entrained concrete is required.

Workability and Finishing: Sikacrete® M-100 may affect the finishing characteristics of the concrete, particularly where warmer ambient conditions are encountered. The amount of bleed water from the concrete also may be reduced and Sika recommends the use of a finishing aid and evaporation retarder such as SikaFilm® to aid finishing.

Consumption

Recommended Dosage

Typical dosage rates range between 7 to 15 % of the total cementitious mass. Higher dosages up 25 % may be used for improved performance or to meet specific project requirements. Sika strongly recommends that trial batches be performed using project materials in order to determine the optimum dosage for specified project requirements.

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