Expand grout
Description
Expand grout
Grout is an expanded cement base composed of cement, aggregate with a specified size of granulation, powder lubricant, polypropylene fibers and expanded materials (anti-contractilation). This product is suitable for grouting sub-column plates that require more free expansion due to specific environmental conditions.
Features:
- It has high resistance against different weather conditions
- Increases adhesion between steel and concrete
- Has high resistance against high static forces
Applications:
- Ability to install and stabilize industrial machinery with vibration and vibration
- Suitable for installation and stabilization of used power towers
- Ability to inject into pre-stressed cable sheath
Technical specification table :
| state of | powder |
| Color | Gray |
| Special Weight | gr/cm3 2/35 |
| Standard | ASTM C 1107 |
| Chlorine ion | does not have |
| 1 day compressive strength | 300 kg/cm2 |
| 3-day compressive strength | 500 kg/cm2 |
| 7-day compressive strength | 550kg/cm2 |
| Compressive strength of 28 days | 590kg/cm2 |
| Time to start expansion | 20´ |
| Expansion termination time | 2 : 30´ |
Package:
25kg bag
Product Description – Expanding Cement Grout
After placing and leveling the column plates and installing the anchor bolts, the next step is to install and fix the base plates on the foundation in metal frame structures. Due to the high sensitivity and the fact that the prediction of shrinkage or compaction of ordinary mortar in various weather conditions is not easily measured, there is a need for a unique mortar with a special formulation called cement grout, which compensates for the effects of mortar compaction. In certain situations, due to special weather conditions, there is a possibility of more water loss from the mortar due to air temperature and lack of proper curing. In this situation, more free expansion should be considered for the grout so that it can repair the shrinkage caused by water evaporation. Therefore, the use of expanding grout is a good option for grouting under the slab of columns that require more free expansion due to specific environmental conditions. Expanding cement-based grout is formulated and produced from cement, specially graded aggregate, polypropylene fibers, powdered lubricant, and mortar expanding materials. Expanding cement grout is a powerful mortar with a compatible workability time and has high initial and final stability and early maturity. The resistance parameters obtained from the use of expanding grout will be much higher and more powerful than conventional cement mortars. This product has two-stage volumetric expansion characteristics when mixed with water. The initial expansion is the result of the rise of gases and occurs when the powder is mixed with water, and the second phase is due to the chemical reaction of the mortar setting, which begins one or two days after mixing the expanding grout mortar. This product can be used as a ready-to-use mortar in general and interior building works and is very suitable.
This grout cement is a ready-made product in the form of a dry powder that reaches a special consistency and concentration by adding the necessary amount of water. The special expanding grout is usable after being applied and does not crack in the face of high heat and various pressures. It also has the ability to fill the pores of holes and pits due to its controlled expansion.
Expanding grout is a type of mortar or grout that is formulated to increase in volume after application and during the setting process. The characteristics of expanding grout include completely filling empty spaces and cracks and also creating a strong, void-free connection. In addition to its expansion properties, this grout has high chemical and mechanical resistance. Cement-based expanding grout is a suitable choice for construction and industrial applications that require a strong, void-free, and water-resistant connection due to its excellent expansion and filling properties.
Expanding grout packaging
What is the packaging form of expanding cement grout?
25 kg bag
Expansive grout consumption rate
How much expanding cement grout should be used?
By calculating the cross-sectional volume and considering the specific gravity of the expanding grout, the amount of expanding cement-based grout with expansion properties can be determined for the desired surface. However, the amount of cement-based grout used is usually 2350 kg per cubic meter of space. Each 25 kg bag of expanding grout occupies about 13 liters of space.
Maintaining expanding grout
What are the principles of maintaining expanding cement grout?
Duration: One year in original packaging.
Conditions: Keep away from cold and frost, heat and direct and prolonged sunlight.
The best storage temperature is: +10 to +30 degrees.
Method of using expanding grout
What is the correct way to use expanding grout?
- The distance between the bottom of the panels and the concrete surface must be at least 10 mm.
- Make sure the plates are in place and, if necessary, check the flatness of the base plates with a level.
- Please note that the concrete surface must be at least 7 days old before grouting.
- The molds intended for grouting must be resistant to permeability to prevent the grout from leaking out before it sets.
- All surfaces of sections that will be in contact with the expanding grout must be free of any contamination, grease, oil, dust, etc.
- If there are loose spots or flaking on the concrete surface where the expanding grout is applied, remove them from the surface by sanding, water jetting, or any other physical operation until a resistant surface is achieved.
- The surface to be grouted should be irrigated with drinking water before applying the expanding grout so that the grout water is not absorbed by the dry surface and does not crack after application.
- Note that the height of the molds intended for grouting should be 2 to 5 centimeters higher than the base plates.
- To prevent the formation of bubbles when pouring the expansive grout paste, it should be considered as a fluid in large-volume grouting from the head box and in small-volume grouting from a sheet 50 cm wide, the length of which is proportional to the size of the mold wall in the area intended for pouring with a 45-degree slope, so that the grout fluid moves evenly and long.
- Slowly add the powder to the water while the electric mixer (drill + blade) is on and continue mixing until a homogeneous mixture is obtained.
- Choose a suitable container for mixing ready-made expanding cement grout powder with water that has the appropriate capacity for mixing a bag of grout with water.
- To make paste grout, 3.5 liters of water are required, and to produce flowable grout, 4.5 liters of water are required per 25 kg bag.
- For grouting very large sections, it is better to divide the desired section into smaller sections using temporary molds.
- Be sure to always mix an amount of expanding grout powder with water that can be used within 30 minutes of mixing.
- Please note that adding any additives or cement and aggregate to the ready-made grout mixture is not permitted.
- Grouting should always be done from one side and flow to other points under its own weight and fluid pressure. For better flowability, a metal rod or chain can be used as an aid. If the cross section is large, the fluid pressure can be increased by increasing the height.
- Note that in hot weather, expanding cement grout powder should be kept in its original packaging and in a covered space. It is recommended to use cold water for mixing in hot weather to balance the internal temperature of the grout, and to use warm water in cold weather.
- Note that excess air can be prevented from being trapped by providing adequate clearance under the base plates.
- The ambient temperature during grouting should be between 5 and 30 degrees Celsius. Temperatures above 30 degrees will accelerate the setting of the grout, and temperatures below 5 degrees will delay the setting of the expanding grout mortar.
- After grouting is complete and the grout has reached its initial setting, it is recommended to cover the mold and tools with a layer of wet burlap and to prevent the water inside the grout from evaporating, cover the surface of the burlap again with nylon. After grouting, surface curing should be done for 7 days.
Properties and effects of expanding grout
What are the properties and effects of expanding cement-based grout?
- No shrinkage of mortar due to controlled expansion
- High psychological and workability properties
- Lower penetration rate than conventional mortars
- High resistance to high static forces
- High resistance to various weather conditions
- Prevents steel corrosion due to the absence of metal aggregates and chlorides in the expanding grout structure.
- Resulting in high initial strength and the possibility of early loading
- No cracking or seam formation after hardening
- Possibility of faster operation of the structure
- High workability without water loss or separation
- Mixing with the least amount of water and achieving optimal flowability
- Preventing shrinkage caused by plastic shrinkage
- Ideal pumpability and flowability
- Increased adhesion between steel and concrete
Application of expanding grout
What are the uses of cement-based expansion grout?
- Suitable for installing and fixing base plates on foundations in metal frame buildings.
- Ability to install and fix industrial machinery with vibration.
- Possibility of grouting bridge foundations and filling the empty space between the column and the bridge
- Suitable for filling holes left by the billet during die removal (after removing the billet)
- Suitable for deep repair work
- Suitable for grouting under the plate of moving and conveying rails in industrial factories.
- Suitable for installing and fixing electrical poles.
- Suitable for use as ready-to-use mortar in general and interior building work.
- Suitable for fixing prefabricated columns
- Can be injected into the sheath of prestressed cables
- Ability to fill holes, potholes, etc.
- Compatible for implanting reinforcement and anchor bolts
- Suitable for filling the space between steel and concrete to stabilize beams, columns and metal sheaths.
Table of physical and chemical properties of expanding grout
What are the physical and chemical characteristics of expanding grout?
| Title | Feature |
| Mode | Powder |
| Color | Gray |
| Specific gravity | 2/35gr/cm3 |
| Standard | ASTM C 1107 |
| Chlorine ion | No |
| 1-day compressive strength | 300kg/cm2 |
| 3-day compressive strength | 500kg/cm2 |
| 7-day compressive strength | 550kg/cm2 |
| 28-day compressive strength | 590kg/cm2 |
| Expansion start time | 20´ |
| Expansion end time | 2:30´ |
Mechanism of action of expanding grout
What is the mechanism of action of expanding grout?
Expandable cement-based grout consists of cement, powdered lubricant, aggregate with a specific grain size, polypropylene fibers and expanding (anti-shrinkage) materials, each of which in turn exerts effects on improving and enhancing the properties of cement grout mortar in the pasty and hardened state. The presence of granulated aggregate in the formulation of expanding grout production will result in the possibility of making a strong mortar with controlled grain size and without the presence of soil or very fine and brittle aggregates. The powdered lubricants present in the formulation of expanding grout production will cause the grout to need less water to become a paste or mortar for productivity. Finally, in addition to increasing fluidity, it will increase compressive strength and improve other mechanical strengths of the mortar. The polypropylene fibers in the structure of the expanding grout also play an important role in the structure of the expanding cement grout by increasing the abrasion resistance and improving some of the mechanical properties of the mortar. The special expanding materials or shrinkage compensating materials in the expanding cement grout provide one of the most important features of the expanding grout, namely, no shrinkage and compensation for the decrease in the volume of the mortar due to hydration and loss of water in the mortar. The amount of free expansion considered for expanding grouts is higher than for other cement-based grouts.
Expanding grout safety
What are the safety conditions when using expanding grout?
- Wear appropriate gloves, safety glasses, and a mask when performing.
- If swallowed, seek medical attention immediately.
- Avoid direct breathing when mixing grout.
- In case of contact with skin or eyes, wash immediately with plenty of fresh water.
Expanding Grout Standard
What standards is expanding grout produced according to?
ASTM C 1107 standard
Expansive grout price
The price of cement grout depends on factors such as the type of surface it is to be applied to and the weight of the product. If you are looking to purchase this type of grout, we recommend Parsik Expanding Cement Grout. This product is specifically designed to fill voids and repair deep cracks caused by concrete damage.
After purchasing this product, our colleagues will deliver it to you in less than 72 hours.
Buying cement grout
Cement grout is one of the most widely used materials among the various types of grouts. To purchase this product, you can refer to the top of this page and benefit from our services. By choosing Parsik cement grout, you can ensure its high quality and effective performance in your projects.
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