CAL expanded fiber anti-crack waterproofing agent

Expansive fiber anti-crack waterproofing agent
Implementation standard "Mortar, concrete waterproofing agent"
"Concrete expansion agent"
Product introduction
In the process of hardening of concrete to form strength , in the early stage, water and cement react to form crystals. The volume of this crystal compound is smaller than the volume of the raw materials, thus causing the volume of concrete to shrink. In the later stage, cracking factors such as shrinkage and temperature changes caused by the evaporation of free moisture in the concrete are the root causes of many problems in concrete.
Since the monofilament fibers in the expanded fibers are evenly distributed inside the concrete in a larger number per unit volume, micro-cracks must be blocked by the fibers during the development process, consuming most of the energy. Four types of expansion The components hydrate at different speeds at the same time. During the formation process of concrete, they establish different micro-expansion forces in the early, middle and late stages to offset the shrinkage force of concrete at different stages during the formation process, so it is difficult for cracks to develop further, thus Blocking cracks achieves the effect of resisting cracks. In particular, the addition of fibers is equivalent to adding a huge number of micro-rebars into concrete. These fiber bars inhibit the cracking process of concrete and improve the fracture toughness of concrete, which cannot be achieved by reinforcing steel bars alone.
Performance index
Concrete performance index of anti-cracking agent
Test items

Performance index

Actual measurement results

Stability of clean paste

Qualified

Qualified

Compressive strength ratio,



















Penetration height ratio,





Limit expansion rate,
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In the water





In the water





In the air





Corrosion effect on steel bars

No corrosion effect on steel bars

None

The conclusion is based on the standards and the inspected items meet the index requirements.

Remarks: Dosage


Dosage is based on cement weight.
Applicable to all concretes with crack and seepage resistance requirements except marine concrete.
Packaging and Storage
Net weight of woven plastic packaging bag
One year storage period