microsilica gel-fast harden
Description
microsilica gel-fast harden
Microsilica gel is a functional product based on carboxylated lubricants, silica soot, fillers and polypropylene fibers and concrete quickener additives. This product will improve the rheological properties of concrete in the pasty state and improve the properties of hardened concrete, after being added to the mixing plan.
Features:
- Increasing the time of concrete efficiency and workability
- Increase the compressive strength of concrete by about 10 to 40 percent
- Stability against chlorine and other destructive chemical ions
Applications:
- Suitable for concretion in cold climates and cold areas
- Execution of structures exposed to continuous melting and freezing cycles
- Implementation of all concrete structures including bridges, parking lots, power plants, tunnels and …
Technical specification table:
| Color | Dark Grey |
| Specific Gravity | Gr/cm3 1/35-1/30 |
| Standard | ASTMC-494TYPEF
BS EN12390 BS1888 – 122 – 8 |
| PH | 8 |
| Chlorine ion | Doesn’t have |
Package:
25 Kg Bucket
Product Description – Fast-setting microsilica gel
Fast-setting microsilica gel is a very powerful product formulated based on carboxylate lubricants, silica fume, fillers and polypropylene fibers and concrete accelerator additives. After being added to the mixing plan, fast-setting microsilica gel improves the rheological properties of concrete in the paste state and also improves the properties in hardened concrete. This material increases the efficiency of concrete in the paste state and also increases the strength and durability of hardened concrete by eliminating water absorption and cutting off and severely reducing permeability. Fast-setting microsilica gel accelerates the setting time of concrete and is very suitable for concreting in cold weather conditions. In the concrete mixing plan, the use of fast-setting microsilica gel causes silica fume, lubricant and fibers to simultaneously enter the concrete structure, and this mixing causes compaction, fluidity, water reduction, etc., and ultimately develops many of the mechanical properties of concrete. Other advantages of this product include a reduction in the water-to-cement ratio of about 10 to 15 percent.
Fast-setting gelled silica fume is a functional product used in concrete to enhance its properties. When added to the concrete mix design, this admixture improves the rheological properties of concrete in the paste state and also enhances the properties of hardened concrete.
How to use quick-setting microsilica gel
Fast-setting silica gel can be added to concrete in two ways:
- Mix with all or part of the concrete mixing water and then add to the dry materials and mix.
- Fast-setting silica gel can be added to the mix after all the concrete mix components have been added.
Note: It should be noted that at least 1 minute of mixing operation must be performed for each cubic meter of concrete.
Note: Using more than the permitted amount of quick-setting silica gel additive can cause setting to occur faster than normal, thus disrupting the hydration stage and ultimately weakening the properties of hardened concrete.
How much quick-setting silica gel to use
The amount of quick-setting silica gel used is determined by conducting proper laboratory studies and depends on weather conditions and the type of materials used, but typically the amount of quick-setting silica gel used is 5 to 7 percent of the weight of the cement used. Note that to achieve high compressive strength and strong concrete, 10 to 15 percent of the mixing water should be reduced before adding quick-setting silica gel.
Storage of quick-setting microsilica gel
Duration: One year in original packaging.
Conditions: Away from cold and frost, heat and direct and prolonged sunlight.
Best storage temperature: +10 to +30 degrees
Safety of quick-setting silica gel
- In case of accidental contact with skin or eyes, rinse immediately with plenty of fresh water.
- This material is not toxic or hazardous to the environment.
- If swallowed, seek medical attention immediately.
- Wear a mask, gloves, and safety glasses when working with any chemicals.
Properties and effects of quick-setting microsilica gel
- Reducing the water-to-cement ratio by about 10 to 15 percent
- Reducing the amount of cement used in concrete
- Increasing the compressive and abrasion resistance of concrete
- Preventing cracks caused by thermal stresses in concrete
- Increasing the fluidity and slump of concrete
- Increasing the working time and workability of concrete
- Accelerating the setting time of concrete at early ages
- Ease of pumping and pumpability of concrete
- Achieving early compressive strength
- Reducing water absorption and reducing concrete permeability
- Compatible with all types of Portland cements
- Increasing the compressive strength of concrete by about 10 to 40 percent
- Resistance to chlorine ion penetration and other chemically destructive ions
- Preventing corrosion of steel bars and sheets
- Increasing the strength and durability of concrete
Mechanism of action of quick-setting microsilica gel
Silica fume, which is present in the formulation of fast-setting microsilica gel, is a powerful pozzolanic material that can be a suitable substitute for cement and also has a function similar to cement. After being mixed with water and calcium hydroxide, silica fume reacts and thus produces hard calcium silicate, which has a significant effect on hardening concrete and increasing its strength. In addition, the polycarboxylate ether present in the fast-setting microsilica gel formulation, which has the role of a lubricant, forms a shell on the cement particles and prevents the cement particles from clumping together by creating a spatial barrier due to the thickness of the absorbed layer. It also creates a repulsive force between the particles due to the absorption of polymer particles by forming homonymous charges, thus lubricating the concrete. The presence of polypropylene fibers in the structure of fast-setting microsilica gel also develops the mechanical and abrasion properties of concrete. In addition, setting accelerators are used in the formulation of fast-setting microsilica gel, which causes rapid setting of the concrete mixture during the cement hydration process.
Physical and chemical properties of quick-setting microsilica gel
| Title | Feature |
| Mode | Thick slurry |
| Color | Dark gray |
| Specific gravity | 1/30gr/cm3 to 1/35 |
| Chlorine ion | No |
| PH | About 8 |
Applications of quick-setting microsilica gel
- Construction of structures exposed to successive cycles of melting and freezing
- Suitable for concreting in cold climates and cold regions
- Concreting in areas under attack by destructive chemical ions
- Ability to make high-strength and durable concrete
- Suitable for implementing water structures such as canals, dams, etc.
- Ability to make impermeable and waterproof concrete
- Implementation of all concrete structures, including bridges, parking lots, power plants, tunnels, etc.
Quick-setting silica gel packaging
25 kg bucket
Standard quick-setting microsilica gel
Standard BS EN12390 – BS1881 – 122 – 8 – ASTMC – 494TYPEF
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