Description

Groot Normal | Dexter

Normal grout is a type of ready-made mortar with a high strength of about 70-80 MPa, without shrinkage and based on cement. Due to the special structure and granularity of its components, this material is very suitable for filling the empty space under the base plates, implementing the foundations of heavy machinery and steel substructures, and stabilizing prefabricated columns.

Normal grout is based on the following standard:

ASTM C1107
Features of Groot Normal:
Stability against high static loads
No cracking after hardening
No shrinkage
The possibility of creating controlled expansions
Fast hardening speed after implementation
Obtaining high initial strength and early loading capability and quick operation of the structure
Ease of mixing with water and achieving optimal fluidity

Applications of normal grout:

Filling the empty space under the base plates or columns
Implementation of heavy machinery foundations and their installation
Steel foundations and stabilization of prefabricated columns
Filling the space around armatures and anchor bolts
The possibility of filling holes, cracks and puddles

Consumption amount of normal grout:

By calculating the volume of the grouting section and considering the specific weight of the ready grout, the amount of consumption can be determined.

How to mix normal grout:

First, choose a container according to the amount of grout and water required, then pour 3.5 liters of water into the container while the mixer is on, slowly add a 25 kg bag of powder to the water and mix for five minutes.

Note: The water required for each 25 kg bag is 3.5 to 3.75 liters depending on the type of application.

Notes on how to use normal grout:

Make sure the base plate is placed in the designated place and check the dimensions.
The smoothness and levelness of the base plate surface should be controlled to avoid creating extra empty space.
Before applying the grout, the concrete under the base plate must be at least 7 days old.
The distance between the surface below the base plate and the concrete should be at least 10 mm.
Concrete surfaces in contact with grout should be healthy, rough and flawless.
All sections in contact with the grout, such as the top surface of the concrete and under the base plate, must be free of any loose particles, dust, grease, oil, rust, etc. The final quality of the grouting operation has to be removed.
To prevent grout cracking, the foundation must be completely saturated with potable water before starting concrete grouting operations. In addition, the molds must be completely impermeable and free of water absorption.
The molds should be placed 25 to 50 mm above the surface of the base plate.
If necessary, the corners of the mold can be brought to favorable conditions by using suitable parts so that the grout flows easily in the right place.
Grout should be poured from one side and flow to other parts. When the position of the grout is wide, it is better to divide the sections into smaller parts using temporary templates. These templates allow the grout to advance properly in the section.
By providing enough free space under the base plate, excess air can be prevented.
Poured grout must be kept moist for 7 days and protected from direct sunlight
This can be done by continuous watering or using a wet sack.
The best temperature for grouting is 5 to 30 degrees Celsius. If the temperature is higher, the setting time will be faster, and if the temperature is lower, the initial setting time will be delayed.
Technical specifications of normal grout:
Physical state: powder
Gray
Chlorine ion: No
Specific weight of prepared grout: 2.35 ± ۰.۰۵ g/cm3