JPH01500029A - Compositions and methods that do not require mixing - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Compositions and methods that do not require mixing Technical field The present invention provides for the application and placement of cementitious compositions that do not require premixing with water. METHODS AND COMPOSITIONS FOR.

Background of the invention Currently, all cementitious compositions are placed in order to obtain the appropriate properties of the final product. It is considered essential to mix it with water beforehand. For this, some ties A mix of groups has been and is needed. premix Some manufacturers put the dry premix into the gap and then add water. It is recommended that you do so. Also, some people put the premix in a bag-like object. , in this state, drop it through the water, and after the bag-like object occupies the appropriate place, pass the bag-like object through the water. The method is to allow water to penetrate into the mixture.

However, these systems did not provide sufficient hydration. cement 1 mortar mixer to uniformly disperse the right amount of water into the concrete Mixers, manual mixing or other wet mixing methods can be used. Also, follow In the conventional technology, the amount of water to be mixed with cement cannot be controlled within a very narrow range. If too little or too much water is required, it may be ineffective or This resulted in the system becoming unusable. Furthermore, the cementitious mixture is Place the dry ingredients directly in water, or pre-wet and mix the dry ingredients. It was not possible to place it on a wet surface without doing so.

Summary of the invention The present invention provides a dry form having fine particles of at least one cement binder. The present invention relates to a composition according to the present invention. Here, the cement is portland cement, stone This may be, but is not necessarily, a high alumina cement or a mixture thereof. It is not limited to these. Magnesium phosphate or other fast curing composition You can also use minutes. The main part of these particles is based on the present invention. the drop velocity in the water to avoid clear separation when injected through water. It is necessary that the degrees are almost the same.

These compositions may also contain fillers such as sand or aggregate particles. In this case too, the main part of these particles is approximately equal to the cement particles. They must have the same underwater falling speed.

In addition, this cementitious mixture has an allowable content of approximately 50% water by volume. The greater the amount of water.

The properties of the finished product are good.

Other additives may also be used in these compositions. like this Examples of additives include curing accelerators, water reducing agents, bombing agents, water absorbing agents, waterproofing agents, and polyesters. Contains mer, dry shrinkage inhibitor, wet shrinkage inhibitor 1 lime, pigments and the like, And they can be added to improve or add special properties to the composition.

However, the additives are not limited to those mentioned above.

The invention also relates to methods of manufacturing these compositions. These methods are providing the cement binder in the form of finely ground particles; and two main parts of the particles. This includes adjusting the underwater fall speed of minutes to within approximately the same range. When using fillers The same process is performed for

When adding fillers, it is desirable to uniformly mix each dry component. .

The present invention further contemplates various methods of providing cement products on substrates. be. This involves saturating the substrate with water in excess of the normal amount of dry ingredients that are subsequently added. In this case, the dry powder is combined with some water and the excess water is drained away. Add it to prevent mixing that could cause and obtain the final product.

Another method according to the invention for providing a cementitious composition according to the invention on a substrate One method is as follows. In other words, bulk concrete as a container means. Prepare the leet retainer and hydrate the predetermined amount of cementitious composition to be deposited on the substrate. Fill the container with more water than required and add at least one cement binder. Add the dry cementitious composition of finely pulverized powder to the water in the container. Add it so that it combines with some of the water until it is completely hydrated (at the same time the excess water (excluded) and place the hydrated cementitious composition.

This method involves leaving the hydrated cementitious composition mixture until it hardens into a solid state. Ru.

Note that the special method will be described further later.

Detailed description of examples The present invention does not require the use of excess water or by mixing the cement components to a hydrated state. Pour, trowel, or spray onto wet surfaces to prevent condensation and Concerning cementitious compositions in the dry state that can yield high-strength products after drying and curing. Ru. Portland cement, gypsum, high alumina cement, and other special cements and combinations thereof, and other compounds such as magnesium phosphate. , can be used satisfactorily in all cases, the only limiting condition being the cementitious composition. At least one component in a substance hydrates or reacts with water. be.

If the composition of these cementitious compositions is properly controlled, sufficient problems with poor wetting, component separation, and reduced compressive strength of the cured product. Minor problems are significantly reduced or eliminated.

If a cement coating is required, first pre-prepare the surface to be coated with water. Upon placing a dry cementitious mixture on the surface, which has been soaked and saturated.

The mixture reacts directly with the wet surface. If additional layers or thicker coatings are applied, If required, first pre-wet the first layer, then apply the entire coat. In order to increase the thickness of the layer and increase the structural strength, the first layer's composition in the dry state Spray coat the material directly.

In the case of a horizontal surface, first soak the surface on which the cement is to be poured with water, then pour one The dry cementitious composition of the invention is poured into water. At this point, drain the excess water. The menthol composition is removed and the composition is left to harden. This person The method allows for rapid cement production without the need for jigs, mixing equipment, moisture measuring equipment, etc.

Moreover, it allows easy mounting.

For example, in the case of floor leveling, cover the floor with water so that puddles form in low places. , then sprinkle the dry cementitious composition on the puddle area. In this way, the floor surface can be easily cleaned using this technique. Leveled.

Another method of applying cement to a substrate such as a floor or wall is to Concrete・１・Pre-hardened cement or concrete is made in a container. It also includes methods of building. Here, a container is a tank, cistern or other container that holds water. This container can be used as a device to spray the obtained product. , first hydrated before being placed on the substrate at the appropriate location by injection or spraying. Cement is a quality composition used every time hair is manufactured. The manufacturing method is Fill with excess water to hydrate the amount of cement to be hydrated, and then.

In the same manner as described above, dry cementitious components are poured into water.

Before the composition hardens, spray or place the composition on the desired location, and then Then, apply it to a substrate and let it harden. The curing time of the composition depends on the cement binder used. control by adding inhibitors, if necessary, depending on the amount of Is possible. After applying the cement, leave it to harden to a solid state.

Additionally, as described above, dry cementitious components can be pumped onto a water-saturated substrate. Can be pinged or sprayed. This means that a wide range of It offers a wide variety of mounting methods, allowing users to use special The most appropriate method can be selected for the application.

Controlling the rate of hydration leads to a wider range of applications, e.g. When applied to a surface, the flow is improved by using a material that hardens extremely quickly.

Problems such as leakage or adhesion failure can be eliminated. brick If mortar is required for piling, it is best to use materials with a long curing time. This will give the operator sufficient time to handle the material. Also 1 surface particle If the surface is not wet enough, add water to make the surface more active and This will give a nice finish.

In the past, water flow control was used to repair highways or other horizontal surfaces. There were cases where this was difficult. This problem can be solved by the present invention, i.e., in a dry state. The solution is to control the amount of water by the composition of the cementitious composition itself. For example, first, check the footings, boss holes, and mortar joints. Place water in the mortar tab or pothole, then pour water into the dry cellar. Ment quality material is poured into the void, sprayed and screened until the desired level is reached. can be Excess water, if present, excluded from the pore by objects. The curing time of cementitious mixtures depends on the needs of the specific application. You can set it according to your gender. The amount of water required depends on the particular set used. It depends on the composition and method of application.

In the case of placing a concrete foundation, first make a hole, then fill it with the required amount of water. I'll do it. Formwork can also be used to retain water if required. Next, pour dry cementitious material directly onto the foundation to the required height. and drain excess water. After curing, the foundation will be completed.

In some situations, the voids may be filled with a small percentage of water and then filled with cementitious mixture. The second component can also be placed in water. During this placement process, add additional water to the voids. Pour in the remaining cementitious mixture at the same time. The cementitious mixture is the final When the volume is reached, the entire surface is sprayed to allow for troweling or other finishing methods. Apply mist paint.

If the pores are porous and cannot hold water, thoroughly wet the pore surface with water and then It is also possible to pour a fast-setting cementitious mixture in the lining. Fill the hole with water and proceed as above.

Control of the density, particle size, and rate of fall in water of dry components is essential for proper cementitious mixtures. Possibility of using materials with different particle sizes and densities, which are important factors for performance , to improve the water activity of cementitious mixtures in forming homogeneous mixtures. Expanded by

Here, when using a slow-setting cementitious mixture, the falling speed in water is high. It is desirable that the

Special cementitious compositions can be modified to meet specific application needs. It can be adjusted and used. The most ideal situation is when all particles are All of the ingredients in the dry state are removed from the water so that they are positively hydrated and, if necessary, integrated with the aggregate. By balancing the falling speed and controlling the cement hardening time. be. In this way, it is possible to build walls with dry mortar. Ru. In this case, hydration of the mortar is performed after the formation of the wall by precasting. , and with the prestressed sections in place, the dry mixture into the water at the joint and place it on the surface to ensure that the cement binder is fully activated. The hardening time of the binder to sufficiently wet the surface varies depending on the selection of cement components. It can be accelerated to seconds or delayed to several days.

The systems of the present invention can use any additives that are acceptable for the particular composition. a No curing agent is required in the composition. In addition, certain properties may be present in the composition. It can also contain a number of chemicals or additives that improve and add to it. Attachment As an additive, it is an accelerator.

A water reducing agent, a binder, a hardening agent or a bombing agent or a waterproofing agent may be added to the composition of the present invention. can be added to. These additives or modifiers can be used in any order. or in any combination, to water or to cement mixtures. 6. Adding the cementitious composition to the water after placing the water in the designated location. Several examples demonstrate the success of this approach.

Possibility of obtaining high quality finished products when using dry premixed materials is large.

If the aggregate is found to be too overloaded, balance the density of the entire system. Aggregates with a smaller grain size or lighter aggregates can be used to maintain .

The present invention can provide the following effects.

1. It is possible to use dry cement.

2. Cement and sand can be used.

3. Cement, sand and aggregate can be used.

4. All types of cement can be used 5. Using all types of cementitious particles, such as gypsum, lime, etc. What you can do.

6. Use of all types of chemical cements (even those with water-soluble parts) Being able to be.

7. No wet mixing equipment or mixing equipment is required.

8. No need to add water to the mixture before placing it in place, saving all equipment costs and that cleaning can be excluded.

9. Requires a tremie, an elephant trunk, or a pipe. When placing the pipe in deep water such as , can be activated with an effective amount of water at the end of the system, thereby allowing the conveying device to You can avoid staining the whole thing with wet cement.

10. The cement content in the mixture is too low, which prevents the development of proper strength. Alternatively, it may prevent excessive adsorption of water, resulting in weak strength and separation of the mixture. To prevent excess water from deteriorating the quality of the mixture, add more cement and Alternatively, water-absorbing substances can be added.

Cement mixtures containing less than 20% cementitious binder are overwatered. It is necessary to add more water-absorbing agent to the mixture to prevent separation and separation. ideal Generally, the cementitious composition in the mixture must have the greatest amount of water absorption possible. There is a point. The higher the ratio of chemically bound water to binder, the better. Additionally, a greater variety of products can be obtained.

Cementitious mixtures containing more than 20% cement may be Mention or water absorbing agent may or may not be added.

When using a liquid other than water, such as a two-component thermosetting organic compound, the aggregate Alternatively, the sand can be allowed to fall through a liquid or chemical solution, and the final mixture is created by gravity. Alternatively, the solid components are mixed by passing through a liquid agent, and the final aggregate Alternatively, a cured product consisting of sand and chemicals can be obtained.

example The scope of the invention will be described in conjunction with the following examples. Here, the following examples are from books. Although this is provided for the purpose of explaining the invention in detail, the scope of the present invention is not limited to this range. It should not be construed as limiting.

The first nine examples below refer to cells placed in a 4' x 8' cylinder filled with water. It concerns ment-quality materials. Here, the cementitious material is at the top of the cylinder. It was poured to a level of 1/2# and cured. The results are shown in Table 1.

However, Portland cement type 1 20% sand 80% Curing time is 20 hours Compressive strength after 24 hours is O,0psi (Insufficient cement) Portland cement type l 90% sand 10% Curing time is 12 hours Compressive strength after 24 hours is 1, 100psi Portland cement type! 50 % Sand 50% Curing time is 16 hours Compressive strength after 24 hours is 600psi Portland cement type I 50% gravel 50% Curing time is 16 hours Compressive strength after 24 hours is 0.0psi (Falling speed is different) Portland cement type ■ 50% baked gypsum 50% Curing time is 10 minutes Compressive strength after 24 hours is 1,600 psi.Curing time is 12 hours. Compressive strength after 24 hours is 1,100psi Sand 80% Curing time is 20 hours Compressive strength after 24 hours is O,0psi (Insufficient cement) Portland cement type m 25% return lithium oxide 1% Sand 49% Curing time is 5 minutes Compressive strength after 24 hours is l, 100psi ammonium phosphate 10% Sand 60% Curing time is 5 minutes The compressive strength after 24 hours is 1,100 psi. The tests were conducted with approximately the same density of resin and hardener in the epoxy formulation. I went there. The resin and hardener are poured into a container without premixing, then the aggregate was added through the resin and curing agent to form a homogeneous mixture, resulting in a cured product. The prescription is It is as follows.

Dish Percent resin: Dow DER331 epoxy resin 13.1% furfuryl alcohol 3.3 % Hardening agent: Dow DEH583.5% Bisphenol A modified diethylene triamine E6TPP Borg Warne r Triphenyl phosphate 3.5% sand 76.6% Curing time is 30 minutes The compressive strength after 24 hours was 1,500 psi.This test was performed on various two-component thermosets. This illustrates that the resins can be used without mixing. For such materials, According to the present invention, polyesters, epoxies, polyurethanes, etc. are included. , the resin and hardener are constructed as components of substantially similar or identical density. and put it in the designated place without mixing. Then, such as sand or aggregate, Adding additives or fillers and mixing them until a homogeneous mixture By this method, it is possible to obtain a mixture that can be cured to a solid body.

The present invention clarified in Section 22 has been sufficiently considered to satisfy the above-mentioned nine objects. Although it is clear that various modifications and specific examples can be made by those skilled in the art, It would be appreciated if such additional claims could be devised, is intended to include such variations or specific examples as may come within its precise spirit and scope. This is for illustration purposes only.

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Claims (67)

[Claims] 1. consisting of finely ground particles of at least one type of cement binder; A cementitious composition in a dry state in which the main parts have approximately the same falling velocity. 2. The composition according to item 1 above comprises at least 35% (by weight) of the cement binder. The composition comprises an amount of filler to provide a mixture having a filler component of . The charge The filler component is in the form of particles, and the main part of the filler component falls at almost the same speed as the cement particles. Be something that you have. 3. Item 2 above, wherein the mixture is mixed in a dry state to a homogeneous concentration. Composition. 4. The above cement binder may include boltland cement, gypsum, high alumina, A composition according to paragraph 1 above, which is magnesium phosphate or a combination thereof. thing. 5. The composition according to item 2 above, wherein the filler is sand or aggregate. 6. The composition according to item 1 above further comprises at least one accelerator, a water reducing agent, pumping agents, water absorption mixtures, waterproofing agents, polymers, wet shrinkage inhibitors or dry shrinkage agents. A composition containing an anti-shrink agent to impart specific properties to the composition. 7. The composition according to item 2 above further comprises at least an accelerator of the industrial type, a water reducing agent, pumping agents, water absorption mixtures, or wet or dry shrinkage inhibitors. , in order to impart specific properties to the composition. 8. from at least one finely ground particle cement binder and filler component; cement in a dry state where the main part of its particles has approximately the same falling speed quality composition. Here, the cement binder comprises 35% (by weight) of the composition. To be of. 9. The above cement binders include boltland cement, gypsum, and high alumina cement. with a cement binder consisting of magnesium phosphate, magnesium phosphate, or a combination thereof. A composition according to item 8 above. 10. 9. The composition according to item 8 above, wherein the filler is sand or aggregate. 11. When placed on or into excess water, it condenses to a solid state, A method of producing a dry curable cementitious composition. During this method, cement The binder is supplied in the form of finely ground particles, and the main parts of the particles are almost the same. adjusting the falling velocity of the particles to have a falling velocity of . 12. The method of item 11 above further provides that the main portion thereof is cement binder particles. A method involving the addition of filler components in the form of particles having approximately the same falling velocity. Something. 13. The method of item 12 above further includes mixing the components in a dry state to a homogeneous concentration. The method should include: 14. A dry cementitious composition produced by the method of paragraph 11. 15. 13. A dry cementitious composition produced by the method of claim 12. 16. When added with or through water, it condenses to a solid state, A method of producing a dry curable cementitious composition. During this method, cement The method of supplying binder as finely ground particles, and the main part of the particles being almost the same. The method includes a method of adjusting the falling speed of particles to have a falling speed of . 17. Particles whose main part has almost the same falling speed as the cement binder particles The manufacturing method according to item 16 above, further comprising adding a filler component in the form of . 18. The above further comprising mixing the composition in a dry state to a homogeneous concentration. The manufacturing method according to item 17. 19. A dry cementitious composition produced by the method of item 16 above. 20. A dry cementitious composition produced by the method of item 17 above. 21. Saturate the substrate with substantially more water than is required to hydrate the cementitious composition. dry state of the finely ground particles containing at least one cement binder; The cementitious composition is completely hydrated by binding with some water; Place it on a water-saturated substrate so that excess water is expelled from the substrate. and allowing the hydrated cementitious composition to harden to a solid state. A method for installing a cementitious composition onto a base material. 22. Saturate the substrate with substantially more water than is required to hydrate the cementitious composition. drying of finely ground particles with a cement binder content of 20% or more The cementitious composition in the state is completely hydrated by combining with some water. Place it on a water-saturated substrate so that the excess water is removed from the substrate. and curing the cementitious composition onto a substrate. How to install the composition. 23. The cementitious material should be mixed dry to a homogeneous consistency before installation on the substrate. 23. The method of claim 22, further comprising: 24. The dry material placed on the substrate is further saturated with added water. 23. The method of claim 22 above. 25. The dry material is placed in a cementitious mixture onto a substrate previously saturated with water. Place it through a sieve-like surface to ensure uniform distribution when placed. 23. The method of claim 22, comprising: 26. The substrate is vertical and water is applied onto the vertical substrate such that the substrate is sufficiently saturated. The dry cementitious composition layer is dry-sprayed onto the water-saturated substrate. A method according to the above item 22, which includes forming by atomizing. here , the above cementitious composition layer suffers from spillage, droop, or difficulty in bonding to vertical substrates. In order to prevent this, a fast-setting cementitious composition is required. 27. fully saturating the cementitious composition layer with water; 27. The method of claim 26, comprising providing an additional layer of cementitious composition of the layer. here , the additional layer also needs to contain a fast curing composition. 28. The base material is a hole in a horizontal plane, and the hole is 23. The method according to item 22, characterized in that the container is filled with water. 29. The substrate is under water and the dry cementitious composition is placed in close proximity to the substrate. The substrate is placed on the substrate in such a way that it comes into contact with water only to the extent that The method according to item 22. 30. Introducing the dry cementitious composition onto the substrate through the hollow extension. 30. The method according to item 29 above. 31. placing both the resin and curing agent components of the organic thermosetting compound on the base material; , and adding a filler material to the mixture, thus allowing gravity to a composite structure having filler material dispersed in the organic thermosetting composition; Preparation of a formulated two-component organic thermosetting composition characterized in that it forms a structure. Method. 32. Adjust the density of resin and hardener components to approximately the same range before adding filler 32. The method of claim 31, further comprising: 33. The organic thermosetting compound is an epoxy, polyester or polyurethane. 32. The method according to item 31 above. 34. the filler is finely ground particles of at least one of sand and aggregate; , that its main part has a higher density than the density of the resin and curing agent components. 32. The method according to item 31 above. 35. The denaturing agent is already in place before adding all of the dry premix composition. 29. The method according to item 28, characterized in that the method is added to water that is 36. Add the modifying agent before any filler addition or after the filler is applied. 32. The method according to item 31, characterized in that it is added to a thermosetting resin mixture. 37. Thoroughly soak the surface of the cavity with water to reduce or prevent water leakage. Introducing a fast-setting cementitious composition onto the inner surface of the cavity for the purpose of filling the cavity with substantially more water than required for hydration of the substance composition; Dry finely ground cementitious particles with one type of cement binder are emptied. Pour the cement into the water in the cave so that it combines with some of the water and becomes completely hydrated. and curing the hydrated composition to a solid state. A cement material characterized by pouring water through a cavity that does not hold water. How to add the composition. 38. The cement binder comprises at least 20% of the dry cementitious composition ( amount), the cementitious composition in the dry state is present in an amount of at least one accelerator; Water reducing agents, pumping agents, water absorbing compositions, waterproofing agents, polymers, wet swelling inhibitors or is characterized in that it contains a drying shrinkage inhibitor in order to impart certain properties to the composition. The method according to item 37 above. 39. A mixture in which the composition has at least 35% (by weight) of cement binder 22. The method according to claim 21, characterized in that the filler component is contained in an amount such that: 40. Allow the mixture to dry to a homogeneous consistency before placing it on a water-saturated substrate. 40. The method according to item 39, characterized in that the mixing is carried out in a dry state. 41. Cement binder is Boltland cement, gypsum, high alumina cement or a combination thereof. 42. Item 39 above, wherein the filler component is sand or aggregate. Method. 43. At least one accelerator, water reducing agent, pumping agent, water absorbing composition, waterproofing agents, polymers, wet swelling inhibitors or drying shrinkage inhibitors, to give specific properties to the composition. 22. The method of claim 21, further comprising: 44. At least one accelerator, water reducing agent, pumping agent, water absorbing composition, waterproofing agent , polymers, wet swelling inhibitors or drying shrinkage inhibitors to impart specific properties to the composition. 40. The method of claim 39, further comprising providing: 45. Add sufficient amount of additional cement to absorb excess water. 40. The method according to item 39 above. 46. From adding sufficient amount of additional cement to absorb excess water. 23. The method according to item 22 above. 47. The denaturing agent is added to the composition after the composition is placed. The method according to item 28. 48. Compensation for cuts or gaps on a board characterized by the following contents: How to fix it. Cementitious composition amount of water used to fill cuts or gaps Filling any cuts or gaps with excess water than required for waving, 20% A dry cementitious composition having the above cement binder is added to the cementitious composition. When the compound combines with some water and is completely hydrated, the excess water is drained into the cut or gap. filling the gaps or gaps so as to eliminate the Curing the menthol composition. 49. The cementitious composition further comprises at least 35% of the cement binder ( The above characterized in that it further comprises a filler so as to result in a mixture having an amount (by weight) of The method according to paragraph 48. 50. The mixture is specially mixed to a homogeneous consistency before being placed on the water-saturated substrate. 49. The method according to item 49 above. 51. Cement binder is Boltland cement, gypsum, high alumina cement , magnesium phosphate, or a combination thereof. The method according to item 48. 52. Item 48 above, wherein the filler component is sand or aggregate. Method. 53. At least one promoter, water reducing agent, pumping agent, water absorbing composition, waterproofing agent , polymers, wet swelling inhibitors or drying shrinkage inhibitors to impart specific properties to the composition. 49. The method of claim 48, further comprising providing: 54. Further add sufficient amount of additional cement to absorb excess water. 49. The method of claim 48, further comprising: 55. A method for placing a cement chamber composition on a substrate, characterized by comprising the following contents: Law. preparing a container for holding a predetermined amount of cementitious composition, as specified above; filling the container with an amount of water in excess of that required to hydrate the cementitious composition of the material; that at least 20% of the composition contains at least one cement binder; A dry cementitious composition consisting of finely pulverized particles of water in said container in such a way that the object is completely hydrated with some of the water and excludes the excess water. placing the hydrated cementitious composition on the substrate; and curing the hydrated cementitious composition to a solid state; 56. The hydrated cementitious composition is poured, sprayed or gunite-blown onto the substrate. 56. The method according to item 55 above. 57. The cementitious composition may further include an inhibitor formulation to retard its hardening. 56. The method according to item 55 above, which is a composition containing a compound. 58. Additional water may be added to the composition after it is placed on the substrate. 56. The method according to item 55 above. 59. The above-mentioned substrate has a frame, and the composition is filled in the frame. The method according to item 55. 60. The composition has at least 35% amount (by weight) of cement binder. No. 55 above, further comprising a filler component in a mixture-forming amount. The method described in section. Here, the filler component is in a particle state, and its main portion is cement grains. Requires the falling speed to be approximately the same as that of the child. 61. Item 60 above, wherein the filler component is sand or aggregate. How to put it on. 62. The above mixture is dried to a homogeneous consistency before pouring into water. 61. The method of claim 60, further comprising mixing. 63. The above cement binders include boltland cement, gypsum, and high alumina cement. the above, characterized in that it is magnesium phosphate, magnesium phosphate, or a combination thereof. The method according to paragraph 55. 64. The cement binder represents 35% (by weight) of the cementitious composition. 64. The method according to item 63 above. 65. In order to impart specific properties to the cementitious composition, at least one Accelerators, water reducers, pumping agents, water absorbing compositions, waterproofing agents, polymers, wet swelling prevention 56. The method according to item 55, characterized in that the method comprises a drying shrinkage inhibitor. 66. Be sure to add sufficient additional cement to absorb any excess clean water. 56. The method according to item 55 above. 67. After placing the cementitious composition on the base material, a modifying agent is further added to the composition. 56. The method according to item 55 above.