CN111072309A

CN111072309A - Concrete waterproof additive

Info

Publication number: CN111072309A
Application number: CN201911313909.1A
Authority: CN
Inventors: 于世兴
Original assignee: Suzhou Peoples Building Materials Co Ltd
Current assignee: Suzhou Peoples Building Materials Co Ltd
Priority date: 2019-12-19
Filing date: 2019-12-19
Publication date: 2020-04-28

Abstract

The invention discloses a concrete waterproof additive, belonging to the technical field of concrete waterproof additives, which comprises the following components in percentage by mass: 200 parts of silica fume 100-containing materials, 50-100 parts of sodium methyl silanol, 20-50 parts of triethoxysilane, 20-40 parts of organosilicon water agent, 200 parts of calcium carbonate 100-containing materials, 10-20 parts of expanding agent, 10-20 parts of cross-linking agent, 20-50 parts of volcanic ash, 50-100 parts of ferric chloride and 10-20 parts of water reducing agent.

Description

Concrete waterproof additive

Technical Field

The invention relates to the technical field of concrete waterproof additives, in particular to a concrete waterproof additive.

Background

After the concrete building is built, the water seepage prevention effect and the anti-cracking effect of a concrete wall surface need to be fully considered, so that the existing waterproof additive is added to reduce the glue space ratio of the concrete, colloidal suspended particles are formed in the hardening process, the water seepage prevention effect of the concrete is improved, but the water seepage resistance of the existing additive is improved to a certain extent, but the existing additive reacts in the concrete mixing process, so that impurities are generated, the strength and the corrosion resistance are reduced, the requirements of the mixing process are improved, the integral service life is prolonged to a certain extent, and the problem that the concrete wall needs to be repaired frequently after being used and damaged for a long time is caused, so that the improvement is needed.

Disclosure of Invention

The invention aims to provide a concrete waterproof additive to solve the problem that after the water seepage performance is improved and the service life of the whole concrete is shortened, the problem that the wall body is slotted to cause frequent repair is solved.

In order to achieve the purpose, the invention provides the following technical scheme: the concrete waterproof additive comprises the following components in parts by mass: 200 parts of silica fume 100-200, 50-100 parts of sodium methyl silanol, 20-50 parts of triethoxysilane, 20-40 parts of organosilicon water agent, 200 parts of calcium carbonate 100-200, 10-20 parts of expanding agent, 10-20 parts of crosslinking agent, 20-50 parts of volcanic ash, 50-100 parts of ferric chloride and 10-20 parts of water reducing agent.

Preferably, the organosilicon water agent is organosilicon water-soluble resin, and the organosilicon water-soluble resin, sodium methylsiliconate and triethoxysilane are subjected to composite processing after dispersion and emulsification in advance.

Preferably, the swelling agent includes a magnesium oxide-series swelling agent and a sulfate-series swelling agent.

Preferably, the calcium carbonate is nano calcium carbonate, and the mass specific gravity of the silica fume and the calcium carbonate is 1: 1.

Preferably, the cross-linking agent is one or more of glycerol, alginate and 1, 4-butanediol diglycidyl ether.

Preferably, the water reducing agent further comprises one or more of a lignosulfonate water reducing agent, a naphthalene-based high-efficiency water reducing agent or an aliphatic high-efficiency water reducing agent.

Compared with the prior art, the invention has the beneficial effects that:

1) the invention reduces the amount of cracks on the outer wall of the cement by using the monosulfate as the additive to react with calcium hydroxide and calcium chlorate hydrate in the cement to generate hydrated calcium sulphoaluminate and improve the compactness of the concrete through the double-expansion-source expanding agent based on the sulfate series expanding agent and the magnesium oxide series expanding agent;

2) according to the invention, the liquid siliceous compacting agent formed by the volcanic ash, the silicon ash, the sodium methylsiliconate, the triethoxysilane and the organosilicon water agent is arranged, so that the gaps of concrete can be preliminarily compacted without influencing the use of the expanding agent, the sulfate expanding agent is further kept outside, the problem that the cracks are expanded due to the expansion of hydrated calcium sulphoaluminate caused by the reaction with calcium hydroxide on the inside is avoided, and the protection effect and the durability of cement are further improved.

Drawings

FIG. 1 is a process flow diagram of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1, the present invention provides a technical solution: the concrete waterproof additive comprises the following components in parts by mass: 200 parts of silica fume 100-200, 50-100 parts of sodium methyl silanol, 20-50 parts of triethoxysilane, 20-40 parts of organosilicon water agent, 200 parts of calcium carbonate 100-200, 10-20 parts of expanding agent, 10-20 parts of crosslinking agent, 20-50 parts of volcanic ash, 50-100 parts of ferric chloride and 10-20 parts of water reducing agent.

The organic silicon water agent is organic silicon water-soluble resin, and the organic silicon water-soluble resin, sodium methylsiliconate and triethoxysilane are subjected to composite processing after dispersion and emulsification in advance.

The swelling agent includes a magnesium oxide-series swelling agent and a sulfate-series swelling agent.

The calcium carbonate is nano calcium carbonate, and the mass proportion of the silica fume and the calcium carbonate is 1: 1.

The cross-linking agent is one or more of glycerol, alginate and 1, 4-butanediol diglycidyl ether.

The water reducing agent also comprises one or more of a lignosulfonate water reducing agent, a naphthalene-series high-efficiency water reducing agent or an aliphatic high-efficiency water reducing agent.

The first embodiment is as follows:

weighing raw materials: selecting 100 parts of silica fume, 50 parts of sodium methyl silanol, 20 parts of triethoxysilane, 20 parts of an organic silicon water agent, 100 parts of calcium carbonate, 10 parts of an expanding agent, 10 parts of a crosslinking agent, 20 parts of volcanic ash, 50 parts of ferric chloride and 10 parts of a water reducing agent.

Mixing and stirring raw materials: adding silicon powder, sodium methyl silanol, triethoxysilane, organosilicon water agent, calcium carbonate, volcanic ash of 1/2, cross-linking agent and ferric chloride, mixing and stirring, preparing on site, and mixing and stirring the volcanic ash of 1/2 and expanding agent.

Standing and separating raw materials: and after the mixed turbid liquid is fully dissolved, standing for 2 hours, separating the solution, adding the silicon powder mixed liquid into the concrete, then adding an expanding agent into the concrete to add a waterproof agent into the concrete, improving the sealing effect, and reducing the expansion cracks caused by the sulfate series expanding agent penetrating into the concrete.

Example two

Weighing raw materials: selecting 150 parts of silica fume, 80 parts of sodium methyl silanol, 40 parts of triethoxysilane, 30 parts of an organic silicon aqueous solution, 150 parts of calcium carbonate, 15 parts of an expanding agent, 15 parts of a crosslinking agent, 30 parts of volcanic ash, 80 parts of ferric chloride and 15 parts of a water reducing agent.

Standing and separating raw materials: and after the mixed turbid liquid is fully dissolved, standing for 2.5 hours, separating the solution, adding the silicon powder mixed liquid into the concrete, and then adding an expanding agent into the concrete to add a waterproof agent of the concrete, so that the sealing effect is improved, and the expansion crack caused by the sulfate series expanding agent permeating into the concrete is reduced.

EXAMPLE III

Weighing raw materials: 200 parts of silica fume, 100 parts of sodium methyl silanol, 50 parts of triethoxysilane, 40 parts of an organic silicon aqueous solution, 200 parts of calcium carbonate, 20 parts of an expanding agent, 20 parts of a crosslinking agent, 50 parts of volcanic ash, 100 parts of ferric chloride and 20 parts of a water reducing agent are selected.

Standing and separating raw materials: and after the mixed turbid liquid is fully dissolved, standing for 3 hours, separating the solution, adding the silicon powder mixed liquid into the concrete, then adding an expanding agent into the concrete to add a waterproof agent into the concrete, improving the sealing effect, and reducing the expansion cracks caused by the sulfate series expanding agent penetrating into the concrete.

While there have been shown and described the fundamental principles and essential features of the invention and advantages thereof, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof; the present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The concrete waterproof additive is characterized in that: the concrete waterproof additive comprises the following components in parts by mass: 200 parts of silica fume 100-200, 50-100 parts of sodium methyl silanol, 20-50 parts of triethoxysilane, 20-40 parts of organosilicon water agent, 200 parts of calcium carbonate 100-200, 10-20 parts of expanding agent, 10-20 parts of crosslinking agent, 20-50 parts of volcanic ash, 50-100 parts of ferric chloride and 10-20 parts of water reducing agent.

2. The concrete waterproofing additive according to claim 1, wherein: the organic silicon water agent is organic silicon water-soluble resin, and the organic silicon water-soluble resin, sodium methylsiliconate and triethoxysilane are subjected to composite processing after dispersion and emulsification in advance.

3. The concrete waterproofing additive according to claim 1, wherein: the swelling agent includes a magnesium oxide-series swelling agent and a sulfate-series swelling agent.

4. The concrete waterproofing additive according to claim 1, wherein: the calcium carbonate is nano calcium carbonate, and the mass proportion of the silica fume and the calcium carbonate is 1: 1.

5. The concrete waterproofing additive according to claim 1, wherein: the cross-linking agent is one or more of glycerol, alginate and 1, 4-butanediol diglycidyl ether.

6. The concrete waterproofing additive according to claim 1, wherein: the water reducing agent also comprises one or more of a lignosulfonate water reducing agent, a naphthalene-series high-efficiency water reducing agent or an aliphatic high-efficiency water reducing agent.