Field of the invention:
The current invention relates to Grouting products for controlling and stopping the seepage of water and a process thereof. The present invention is based on a 2-component resin, which is injected in to pores, capillaries, cracks, joints, cavities and gravel beds and which polymerizes to an elastically neutral end product.
Background of the invention: Structural bonding and sealing grouts with reaction resin grouts is a very common technique. There are many products freely available in the market but it is necessary to select the product which functions. In the basements mostly the problem is from the joints between the walls and the floor and sometimes flooring itself.
Grouting is normal practice in these places, products which can be theoretically used are
o Epoxy resins
o Polyurethane's
o Polyesters
o Methyl methacrylates (MMA)
o Acrylates
o Urea formaldehyde
o Silicic acids and silicic acid esters
Product selection according to function and properties
Crack injections are subject to a wide variety of requirements and this must be taken into account. The following groups may be defined:
"force - transmitting " bonding
stabilization
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elastic sealing corrosion protection
Several requirements may some times be met using a single product, but this may largely depend on conditions during work execution. The following table provides an overview of the applications of the different product groups.


Epoxy Resin: Epoxy resins are restricted to structural bonding injections.
For optimum force transmission the base (sides of crack) should be clean and dry. Dirt and moisture considerably reduce tensile bond strengths. One-pack system plant is generally used, i.e. resin and hardener are thoroughly mixed prior to introduction into the grouting plant. This prevents batching errors with the generally small grout quantities, under high pressures and with long grouting times.
Polyurethanes (PU/SPUR)
Polyurethane resins have long been state-of-the-art products - so one might think. This is however only true in cases where it is a matter of "cementing" the past. Unlike other systems PU-resins are manufactured and sold on the market for particular applications. This assists the "normal user" and cuts down on errors, but at the same time narrows down opportunities. A basic distinction to be drawn is whether operations are carried out.
- under water pressure or
- on a dry base
Since two completely different procedures are necessary.
When working under water pressure it is common to pre-grout with a "one-pack resin" that reacts quickly with water, i.e. modified isocyanates are premixed with a catalyst. This produces a compound which remains workable for a long time and only reacts in the presence of water (or humidity). The intense reaction induced by water produces carbon dioxide (C02) and thus a variably strong foaming effect. The quick reaction makes such systems suitable for holding back water. The fine pore structure tends with time to lose volume (lost gas) and at high pressures
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there is the risk of cell walls caving in. this is not then a permanent solution.
As a result, a second grouting operation needs to be carried out using slow reacting two-pack resins which themselves cannot be used under water pressure. The one-pack preseal allows the second injection to react unhindered, producing a permanently waterproof mass. Of course the two-pack injection can be used alone as a preventive measure with dry or only slightly damp cracks.
These two-pack polyurethane's usually consist of polyol and isocyanates. Foaming is minimal and a closed-cell structure of individual bubbles is formed. The relatively high elasticity allows their use in cracks with limited movement. Here the crack width is very important, i.e. the wider the crack the larger the expansibility. With cracks below 0.5 mm one can hardly speak of expansibility.
Prior Art:
US patent No. 5,980,446 teaches methods and systems for stabilizing a subsurface area such as a buried waste pit for either long term storage, or interim storage and retrieval. A plurality of holes are drilled into the subsurface area with a high pressure drilling system provided with a drill stem having jet grouting nozzles. A grouting material is injected at high pressure through the jet grouting nozzles into a formed hole while the drill stem is withdrawn from the hole at a predetermined rate of rotation and translation. A grout-filled column is thereby formed with minimal grout returns, which when overlapped with other adjacent grout-filled columns encapsulates and binds the entire waste pit area to form a subsurface
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agglomeration or monolith of grout, soil, and waste. The formed monolith stabilizes the buried waste site against subsidence while simultaneously providing a barrier against contaminate migration. The stabilized monolith can be left permanently in place or can be retrieved if desired by using appropriate excavation equipment. The jet grouting technique can also be utilized in a pretreatment approach prior to in situ vitrification of a buried waste site. The waste encapsulation methods and systems are applicable to buried waste materials such as mixed waste, hazardous waste, or radioactive waste.
Object of the invention:
The main object of this invention is to develop an elastic end product, non-hazardous, non-toxic, water based, resulting from polymerization of polymers like acrylates, HEMA, HEPA, Butyl Acrylate, Bisacrylamide, and other organic additives particularly initiators and promoters like amines and oxidizing agents like persulphate and peroxides. The end product is physiologically neutral, insoluble and resists rotting and decomposition. Use in potable water containers is unproblematic.
Another object of this invention is to develop single product which is the result of cross-linking polymerization and modify by encapsulating it with sodium silicate.
Summary of the invention:
The present invention relates to Grouting product to control or stop the seepage of water and a process thereof.
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According to the invention a Grouting product for controlling or stopping seepage of water hereinafter called Protekta A and B/ Protekta Hydrogrout, comprising equal ratio of Grip A and Grip B, stored in two containers, connected through a nozzle with the help of compressed air and injected in the seepage wherein the two Grips react in situ and forms the Grouting product.
According to another embodiment of the invention, the Grip A, comprising 5 to 40% acrylates mixed in water, 0.5% to 3% cross linkers, 0.5% to 10% glycol and any fatty amine mixed in the ratio of 2:4 and Grip B comprising glycols 3 to 5% by weight mixed in the ratio 30 to 50%, 2 to 4.5% oxidizing agents are taken.
According to another embodiment of the invention , a Grouting product for controlling or stopping seepage of water comprising 10 to 45 % acrylates mixed with water and 0.5 to 3% cross linkers added to it. 0.5 to 10% glycol along with any fatty acid taken in the ratio of 2:4, mixed together with water 0.3 to 5% by weight in 30 to 50% water and an oxidizing agent and 0.3 to 5% of sodium silicate added to the solution to obtain the product.
According to another embodiment of the invention, a process for making a Grouting product for controlling or stopping seepage of water comprises the following steps: a) Taking water 30 to 50% by w/v, b) Adding acrylates 5 to 40% by w/v and stirring the solution, c) Adding cross linkers .05 to 3% w/v and stirring the solution, d) Adding glycol 0.5 to 10% by w/v and stirring the solution, e) Adding a mixture of tri methyl amine and fatty amine in the ratio of 2:4.and stirring the solution to obtain Grip A. f) Taking water 30 to 50% by w/v, in another vessel, g) Adding Glycol 3 to 5% by w/v, h) Adding oxidizing agent 2 to 4.5% by w/v to the solution and stirring the solution to obtain Grip B.
According to another embodiment of the invention, A process for making a Grouting product for controlling or stopping seepage of
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water comprises the following steps: a) Taking water 30 to 50% by w/v, b) Adding acrylates 5 to 40% by w/v and stirring the solution, c) Adding cross linkers .05 to 3% w/v and stirring the solution, d) Adding glycol 0.5 to 10% by w/v and stirring the solution, e) Adding a mixture of tri methyl amine and fatty amine in the ratio of 2:4.and stirring the solution, f)Adding Glycol 3 to 5% along with water 30 to 50% by w/v, g) Adding oxidizing agent 2 to 4.5% by wt/vol to the solution and stirring the solution, h) Adding sodium silicate 0.3 to 5%by w/v. to the solution to obtain a grouting product.
According to another embodiment of the invention, the acrylates are methyl methacrylate or HEMA Or HEPA or butyl acrylate or methyl acrylate or combination thereof.
According to another embodiment of the invention, the cross-linkers are bis-acrylamide.
According to another embodiment of the invention, the glycol is poly propylene glycol or triethylene glycol or any other glycol.
According to another embodiment of the invention, the amine is tri-methylamine or tri-ethanol amine or any fatty acid amine.
According to another embodiment of the invention, the oxidizing agents are sodium per sulphate or amino per sulphate or benzyl per oxide.
Description of the invention:
This invention is to develop 2 pack systems used directly under water pressure are promosing: due to their high viscosity, however, they are unsuitable for crack grouting. They are used in tunnel and gallery construction where large fissures and crevices are successfully grouted. The reaction speed is similar to that of one-pack polyurethane, but independent of water. In

this case water merely induces a foaming effect that varies with the amount of water acting on the liquid grout.
Acrylic resins systems:
Low viscosity two-pack acrylic resins are injected directly into the heart of the damaged area, i.e. into the load bearing fabric, from where they spread out through the finest pores and hairline cracks into the whole fabric and polymerize, producing an elastic neutral end product. This allows a full seal with minimum material and short working times. The packers may be removed for reuse only minutes after injection.
All products are based on an aqueous two-pack system of modified acrylic resins with a viscosity and surface tension adapter to water (with the exception of formulations for expansion joints). Depending on the condition of the building fabric, the existing damage and its causes, and the required solutions, different base compositions or variable formulations have been implemented to achieve the required performance. The special characteristics of the material often bring solutions to seemingly insuperable problems. For example grouting against direct water counterpressure (flowing water) is possible. The grouting pressure need only be greater than that of the water. The residual water in the grouting zone is integrated into the polymerization process. Two-stage grouting as with polyurethane is unnecessary.
This invention is to develop an elastic end product, non-hazardous, non-toxic, water based, resulting from polymerization of polymers like acrylates, HEMA, HEPA, Butyl Acrylate, Bisacrylamide, and other organic additives particularly initiators and promoters like amines and oxidizing agents like persulphate and peroxides. The end product is physiologically neutral, insoluble and resists rotting and decomposition. Use in potable water containers is unproblematic.

This invention also looked into the possibility of developing single product which is the result of cross-linking polymerization, and the product is modified by encapsulating it with sodium silicate.
Protekta Grip A & B penetrates into finest hairline cracks and pores and seals the whole damaged area. It is injected directly into the actual damaged area. The injection pressure and the time of reaction can be controlled in both Protekta Grip and Protekta Hydrogrout by using retarders and accelerators. The retarders used is basically based on aromatic Quinone, potassium ferricynade and other additives along with water. Accelerators are amines in different concentrations and monoethylene glycol.
The injection pressure is controlled by a compressor and therefore the product is pressed into the structure at an adopted pressure. These products can be used in building structures to prevent water ingress and loss of water and water seepage. It has been successfully used in basements, swimming pools and big water tanks from outside. There are some cases where corrosion of reinforcement steel has taken place, hydrostatic pressure is very high and water is flowing. Repairing such damage by conventional means is expensive and not easy.
Example 1
Grip A: 5-40% acrylates like methyl methacrylate or HEMA or HEPA or butyl acrylate or methyl acrylate or combination thereof are mixed in water and .05 to 3% cross linkers like bis-acrylamide is added, about 0.5 to 10% poly propylene glycol or triethylene glycol or any other glycol is taken and tri methyl amine, tri ethanol amine or any fatty amine are taken in the ratio 2:4 and mixed together and is stored as Grip A. The variation in the amine can accelerator or retard the reaction.
Grip B: Glycols, MEG are mixed with water 3 to 5% by weight in 30 to 50% water. Approximately 2 to 4.5 % oxidizing agent like

sodium per sulphate or amino persulphate or benzyl per oxide are taken.
Grip A Grip B in equal amounts are stored in 2 container which are connected with a nozzle with the help of compressed air at pressure of 300 to 400 bar, they are injected and they react in situ at the damages are and confirms the above mentioned elastic end product. It is important to note that this product is non¬toxic, water based and does not harm the ground water.
Example 2:
10 to 45 % Methacryltes, mixed with water and 0.5 to 5% bis-acrylamide added to it. 0.5 to 10% glycol along with any triethanolamine taken in the ratio of 2:4, mixed together with water 0.3 to 5% by weight in 30 to 55% water and an oxidizing agent and 0.3 to 5% of sodium silicate added to the solution to obtain the product.
Example 3:
5 to 30% HEMA mixed in water, 0.5% to 3% bis-acrylamide, 0.5% to 10% glycol and any fatty amine mixed in the ratio of 2:4,glycols 3 to 5% by weight mixed in the ratio 30 to 50%, 2 to 4.5% oxidizing agents are taken. Glycols, MEG are mixed with water 3 to 5% by weight in 30 to 50% water. Approximately 2 to 4.5 %sodium per sulphate or amino persulphate or benzyl per oxide are taken to obtain the product.
Example 4
10-45% acrylates like methyl methacrylate or HEMA or HEPA or butyl acrylate or methyl acrylate or combination thereof are mixed in water and .05 to 3% cross linkers like bis-acrylamide is added, about 0.5 to 10% poly propylene glycol or triethylene glycol or any other glycol is taken and tri methyl amine, tri

ethanol amine or any fatty amine are taken in the ratio 2:4 and mixed together, Glycols, MEG are mixed with water 0.3 to 5% by weight in 30 to 50% water. Approximately 0.2 to 4.5 % oxidizing agent like sodium per sulphate or amino persulphate or benzyl per oxide are taken and about 0.3-5% of sodium silicate is added. This is a one component and it is injected through the nozzle at 300 psi. Normal grouting machined operates at 120 -300 psi.

We Claim:
1. A Grouting product for controlling or stopping seepage of water hereinafter called Protekta Grip A and Grip B/ Protekta hydro grout, comprising equal ratio of Grip A and Grip B, stored in two containers, connected through a nozzle with the help of compressed air and injected in the seepage wherein the two Grips react in situ and forms the Grouting product.
2. A Grouting product for controlling or stopping seepage of water as claimed in claim 1, wherein the Grip A, comprising 5 to 40% acrylates mixed in water, 0.5% to 3% cross linkers, 0.5% to 10% glycol and any fatty amine mixed in the ratio of 2:4 and Grip B comprising glycols 3 to 5% by weight mixed in the ratio 30 to 50%, 2 to 4.5% oxidizing agents are taken.

3. A Grouting product for controlling or stopping seepage of water comprising 10 to 45 % acrylates mixed with water and 0.5 to 3% cross linkers added to it. 0.5 to 10% glycol along with any fatty acid taken in the ratio of 2:4, mixed together with water 0.3 to 5% by weight in 30 to 50% water and an oxidizing agent and 0.3 to 5% of sodium silicate added to the solution to obtain the product.
4. A process for making a Grouting product for controlling or stopping seepage of water as claimed in claim 2 comprising the following steps:

a) Taking water 30 to 50% by w/v,
b) Adding acrylates 5 to 40% by w/v and stirring the solution,
c) Adding cross linkers .05 to 3% w/v and stirring the solution,
d) Adding glycol 0.5 to 10% by w/v and stirring the solution,
e) Adding a mixture of tri methyl amine and fatty amine in the ratio of 2:4.and stirring the solution to obtain Grip A.
f) Taking water 30 to 50% by w/v, in another vessel,
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1) Adding Glycol 3 to 5% by w/v,
1) Adding oxidizing agent 2 to 4.5% by w/v to the solution and stirring the solution to obtain Grip B.
5. A process for making a Grouting product for controlling or
stopping seepage of water as claimed in claim 3 comprising the
following steps:
a) Taking water 30 to 50% by w/v,
b) Adding acrylates 5 to 40% by w/v and stirring the solution,
c) Adding cross linkers .05 to 3% w/v and stirring the solution,
d) Adding glycol 0.5 to 10% by w/v and stirring the solution,
e) Adding a mixture of tri methyl amine and fatty amine in the ratio of 2:4.and stirring the solution.
f) Adding Glycol 3 to 5% along with water 30 to 50% by w/v,
g) Adding oxidizing agent 2 to 4.5% by w/v to the solution and stirring the solution.
h) Adding sodium silicate 0.3 to 5%by w/v. to the solution to obtain a grouting product.
6. A Grouting product for controlling or stopping seepage of
water as claimed in any of the preceding claims, wherein the
acrylates are selected from the group consisting of methyl
methacrylate or HEMA or HEPA or butyl acrylate or methyl acrylate
or combination thereof.
7. A Grouting product for controlling or stopping seepage of water as claimed in any of the preceding claims, wherein the cross-linkers are selected from the group consisting of bis-acrylamide.
8. A Grouting product for controlling or stopping seepage of water as claimed in any of the preceding claims, wherein the glycol is selected from the group consisting of poly propylene glycol or triethylene glycol or any other glycol.

9. A Grouting product for controlling or stopping seepage of
water as claimed in any of the preceding claims, wherein the
amine is selected from the group consisting of tri-methylamine or
tri-ethanol amine or any fatty acid amine.
10. A Grouting product for controlling or stopping seepage of
water as claimed in any of the preceding claims, wherein the
oxidizing agents are selected from the group consisting of sodium
per sulphate or amino per sulphate or benzyl per oxide.
11. A Grouting product for controlling or stopping seepage of water substantially as hereinbefore described with reference to accompanying examples.
12. A process for making a Grouting product for controlling or stopping seepage of water substantially as hereinbefore described with reference to accompanying examples.