KALMATRON® KF-Jet
KALMATRON® KF-Jet designed as:
- a premix to the dry cement powder for production of Rapid/ Fast Setting Cements with controlled setting time, and
- as an admixture to concrete/mortar mixes.
Distinctive difference from known products is that concrete after application has twice lower drying shrinkage cracks, higher compressive strength and adjustable hardening time.
■ APPLICATION AS AN ADMIXTURE TO CONCRETE MIX
To achieve required level of rapid concrete performance, apply KF-Jet as an admixture to concrete based on cement weight :
1. Apply 3 Kg/m3 of KF-Jet to get initial setting time of cement paste at 10 minutes.
2. Apply 6 Kg/m3 of KF- Jet to get initial setting time of cement paste at 5 minutes.
3. Apply 10 Kg/m3 of KF-Jet to get initial setting time of cement paste at 3 minutes.
■ APPLICATION AS A PREMIX TO CEMENT POWDER
1. Apply 7.5 Kg of KF-Jet per 1000 Kg of cement to get Fast Setting cement.
2. Apply 11 Kg of KF-Jet per 1000 Kg of cement to get Rapid Set cement.
■ VISCOSITY ADJUSTMENTS
1. Use water to cement ratio for concrete mixes at 0.38 to 0.47.
2. For injections apply water to cement ratio at 0.65 with high RPM blender.
3. Adjustments of hardening time provide by adding of 1/10 weight of KF-Jet.
EXPECTED RESULTS
1. Shrinkage is lower at 2 to 3 times.
2. Exothermic heat is lower at 30%.
3. No shrinkage cracks, flakes, efflorescence, and dusty spots.
• ADJUSTMENT OF SETTING TIME
1
Mix cement slur for 1 minute.
2Please, take a 1-Liter volume jar and pick up the slur from the center of mixer.
3Do not stop mixer during the next procedure:
3.1Pour the contents from the jar with cement slur onto a glass or plastic plate 50 cm x 50 cm.
3.2Check the setting time, based on the type of KF-Jet you are working with, either 3, 5 or 10 minutes.
3.3If setting time is shorter than required, add 500 ml of water per 100 Kg to the cement slur.
3.4If setting time is longer than required, start by adding 2 Kgs of KF-Jet per 100 Kg to the cement slur.
• INJECTION APPLICATION
1.Depending on the equipment and volume of application, please apply pumping pressure gradually from ½ bar until resistance
to pumping pressure will be retarded.
2.Increase the pressure up to 2 times to get cement slur moving through the hose and needles.
3.Keep injection moving until the excess cement slur comes up around the needles.
4.Turn off the pump and wait for an hour for stable results.
5.In case bubbles appear around the needles, please proceed pumping for stable result.
•ATTENTION
For job sites with severe and/or pressured leaks it is necessary to inject KF-J in dry form. Air pressure of the compressor transporting
KF-Jet powder to the source of the leak should be equal to or higher than the original pressure of the leaking water (or any liquid).
KALMATRON® KF-Jet Concrete
Application instruction for concrete repair
The following instructions are developed for the application of KALMATRON® KF-Jet Cement for repair of crumbled concrete and masonry structures to provide compaction of crumbled areas while increasing density, compressive strength, and impermeability. Due to differences in water acidity, alkali content, temperature and humidity of air on job sites, we must recommend that technological
adjustments are made under the supervision of an experienced foreman to avoid material loss and equipment damage.
• SURFACE PREPARATION
Wash the surface of the contaminated concrete with water at a rate of 1 gal/ sq. yd. (or 6 Liters/m2). Remove spots of paint by scraping or sand blasting.
• PREPARATION of KALMATRON® KF-Jet Concrete
1.Prepare the dry batch of concrete with KF-Jet.
2.Turn mixer on for 1 minute. Add water to get a water-to-cement ratio between 0.4 and 0.45.
3.In case the batch is still stiff, please add proportionally 250 grams of water per 1 cubic meter.
4.Continue mixing until application is completed.
•APPLICATIONS
1.KF-Jet Concrete can be applied manually or by shotcrete technology.
2.The thickness of the application should be chosen in accordance with existing standards.
3.Take a batch of KF-Jet Concrete and verify the setting time.
4.Cure the new concrete by spraying water on the surface every 8 to 12 hours after application during the first 48 hours, or
strew 30 mm of wet/soaked sand until natural drying occurs.
• SAFETY
Operation with KF-Jet Concrete is similar to finishing jobs. Always use an approved respirator and rubber gloves. In case KF-Jet Concrete is inhaled or gets in contact with the eyes, rinse and wash abundantly with water.
KF-Jet Concrete is non-toxic and non-explosive.
