阅读说明：本技术 一种外墙瓷砖防水粘接砂浆 (Waterproof bonding mortar for exterior wall tiles ) 是由 罗昕 胡涛 吴松 邓坚 彭德华 毛华祥 黄章鸿 于 2019-04-29 设计创作，主要内容包括：本发明涉及砂浆制作技术领域,特别涉及一种外墙瓷砖防水粘接砂浆,按重量份计包括如下组分：水泥430-480份、石英砂500-550份、防水剂15-18份、纤维素1-3份、疏水剂8-12份,本发明的防水粘接砂浆具有密实度高、泌水性优、抗渗性强且抗冻融性能好的特点,不仅减少了裂纹,提高了力学性能,还达到了持久防水的效果,并且施工简单方便快捷,凝结性能优异。(The invention relates to the technical field of mortar manufacturing, in particular to waterproof bonding mortar for exterior wall tiles, which comprises the following components in parts by weight: 480 parts of cement 430-480, 550 parts of quartz sand 500-550, 15-18 parts of a waterproof agent, 1-3 parts of cellulose and 8-12 parts of a hydrophobic agent.)

1. The waterproof bonding mortar for the exterior wall tiles is characterized by comprising the following components in parts by weight: 480 parts of cement 430-.

2. The exterior wall tile waterproof adhesive mortar of claim 1, which comprises the following components in parts by weight: 450 parts of cement, 520 parts of quartz sand, 20 parts of a waterproof agent, 2 parts of cellulose and 10 parts of a hydrophobic agent.

3. The exterior wall tile waterproof adhesive mortar of claim 1 or 2, wherein the waterproofing agent comprises the following components in parts by weight: 8-10 parts of paraffin, 2-3 parts of sodium bicarbonate, 4-6 parts of soap powder, 5-8 parts of diatom extract and 1-2 parts of ethyl p-hydroxybenzoate.

4. The exterior wall tile waterproof adhesive mortar of claim 3, wherein the diatom extract is prepared by the following steps:

s1: mixing diatom and quicklime according to the mass ratio of 1: (0.4-0.6), heating to 70-80 ℃, preserving heat for 10-15min, cleaning with clear water, squeezing and filtering to obtain filtrate A and filter residue A;

s2: soaking residue A in citric acid solution at low temperature for 20-30min, and filtering to obtain filtrate B and residue B;

S3: mixing the filter residue B with sodium chloride according to a mass ratio of 1: (0.2-0.5), heating the mixture to the temperature of (35-40), preserving the heat for 10-15min, then placing the mixture into an ethanol solution, soaking the mixture for 20-30min at medium temperature, and filtering to obtain filtrate C and filter residue C;

s4: mixing the filtrates A, B, C, drying, mixing with the residue C, pulverizing and grinding to obtain a mixture with a particle size of 200-300 meshes, and performing ultrasonic treatment for 10-15 s.

5. The exterior wall tile waterproof bonding mortar of claim 4, wherein the concentration of the citric acid solution is 50-70%, and the amount of the citric acid solution is 1.5-2.5 times of the mass of the filter residue A.

6. The exterior wall tile waterproof adhesive mortar of claim 4, wherein the temperature of the low-temperature soaking is 0 to 5 ℃.

7. The exterior wall tile waterproof bonding mortar of claim 4, wherein the concentration of the ethanol solution is 70-80%, and the amount of the ethanol solution is 2-3 times of the mass of the filter residue B.

8. The exterior wall tile waterproof adhesive mortar of claim 4, wherein the temperature of the medium temperature soaking is 70-80 ℃.

9. The exterior wall tile waterproof adhesive mortar of claim 4, wherein the power of the ultrasonic treatment is 300- & 500W, and the frequency is 45-50 kHz.

10. The exterior wall tile waterproof adhesive mortar of claim 1 or 2, wherein the hydrophobizing agent comprises the following components in parts by weight: 7-9 parts of soybean lecithin, 1-3 parts of silane coupling agent, 5-8 parts of aluminum powder and 1-2 parts of titanium dioxide.

Technical Field

The invention relates to the technical field of mortar manufacturing, in particular to waterproof bonding mortar for exterior wall tiles.

Background

The outer wall impermeability is one of the important problems which need to be solved urgently in the construction of the present day, and the solid clay bricks which are used in large quantities in the past are proved to be not suitable for the outer wall construction; at present, the exterior wall material applied in the building mainly takes vitrified hollow microspheres as a lightweight aggregate, river sand as an auxiliary aggregate, lime calcium, cement, a plasticizer and the like as cementing materials, a proper amount of anti-crack fiber materials are added, and the mixture is stirred after being mixed with shocking according to a proper proportion to form single-component inorganic dry powder heat-insulating mortar, but the defects of large porosity, strong water absorption, poor impermeability and the like are generally existed.

Patent No. 201510480931.0 discloses an adhesive mortar for ALC wallboards, which is composed of portland cement, fly ash, quartz sand, redispersible latex powder, lignocellulose, and polyacrylamide, and can be used for ALC wallboards, but its anti-permeability is not satisfactory.

Patent No. 201811038317.9 discloses a raw material comprising portland cement, water reducing agent, defoaming agent, fly ash, lime, quartz sand, composite high alumina cement, hydrophobically modified cellulose ether, and hydrophobicity, but its strength and adhesion stability are not ideal.

In addition, the mortar and water in construction can cause the system to contain a large amount of water, so that the surface strength and the actual strength after dry solidification are improved slowly, the construction effect is influenced, and the construction period is delayed.

Disclosure of Invention

The invention provides waterproof bonding mortar for exterior wall tiles, which aims to solve the technical problems.

The method is realized by the following technical scheme:

the waterproof bonding mortar for the exterior wall tiles comprises the following components in parts by weight: 480 parts of cement 430-.

Further preferably, the waterproof bonding mortar for the exterior wall tiles comprises the following components in parts by weight: 450 parts of cement, 520 parts of quartz sand, 20 parts of a waterproof agent, 2 parts of cellulose and 10 parts of a hydrophobic agent.

The waterproof agent comprises the following components in parts by weight: 8-10 parts of paraffin, 2-3 parts of sodium bicarbonate, 4-6 parts of soap powder, 5-8 parts of diatom extract and 1-2 parts of ethyl p-hydroxybenzoate.

The preparation method of the diatom extract comprises the following steps:

s1: mixing diatom and quicklime according to the mass ratio of 1: (0.4-0.6), heating to 70-80 ℃, preserving heat for 10-15min, cleaning with clear water, squeezing and filtering to obtain filtrate A and filter residue A;

s2: soaking residue A in citric acid solution at low temperature for 20-30min, and filtering to obtain filtrate B and residue B;

s3: mixing the filter residue B with sodium chloride according to a mass ratio of 1: (0.2-0.5), heating the mixture to the temperature of (35-40), preserving the heat for 10-15min, then placing the mixture into an ethanol solution, soaking the mixture for 20-30min at medium temperature, and filtering to obtain filtrate C and filter residue C;

s4: mixing the filtrates A, B, C, drying, mixing with the residue C, pulverizing and grinding to obtain a mixture with a particle size of 200-300 meshes, and performing ultrasonic treatment for 10-15 s.

The concentration of the citric acid solution is 50-70%, and the dosage of the citric acid solution is 1.5-2.5 times of the mass of the filter residue A.

The temperature of the low-temperature soaking is 0-5 ℃.

The concentration of the ethanol solution is 70-80%, and the dosage of the ethanol solution is 2-3 times of the mass of the filter residue B.

The temperature of the medium-temperature soaking is 70-80 ℃.

The power of the ultrasonic treatment is 300-500W, and the frequency is 45-50 kHz.

The cellulose is formed by mixing cellulose containing carboxyl functional groups and cellulose containing hydroxyl functional groups.

The dosage ratio (by mass ratio) of the cellulose containing carboxyl functional groups to the cellulose containing hydroxyl functional groups in the cellulose is (2.5-3.5): 1.

The hydrophobic agent comprises the following components in parts by weight: 7-9 parts of soybean lecithin, 1-3 parts of silane coupling agent, 5-8 parts of aluminum powder and 1-2 parts of titanium dioxide.

Has the advantages that:

the waterproof bonding mortar disclosed by the invention has the characteristics of high compactness, excellent bleeding property, strong impermeability and good freeze-thaw resistance, reduces cracks, improves the mechanical property, achieves the effect of lasting water resistance, and is simple, convenient and rapid to construct and excellent in condensation performance.

The invention adds the waterproof agent and the hydrophobic agent into cement, quartz sand and cellulose, improves the distribution of hydrophobic functional groups on the surface of the mortar, and improves the hydrophilic and hydrophobic properties of the mortar.

The invention adopts the cellulose containing hydroxyl and carboxyl, and reasonably controls the quantity of the hydroxyl and carboxyl functional groups, thereby not only fully playing the adhesive property of the cellulose, but also playing a role in reducing, further reducing the water content of the system, enhancing the root-blocking effect, and being beneficial to adjusting the solidification property and compact structure.

The invention adopts paraffin, sodium bicarbonate, soap powder, diatom extract and ethyl p-hydroxybenzoate to prepare the waterproof agent, and chemical root blocking is carried out through sodium ions, so that the puncture of plant root systems can be prevented; meanwhile, the diatom extract has good workability, the porosity is reduced, the diatom is extracted, the siliceous components are fully utilized, the components such as SOD, amino acid and the like are fully dissolved out, the waterproof performance and the anti-aging performance are enhanced, and the diatom extract has activity and can absorb light energy and heat energy by utilizing ultrasonic wave excitation, so that the mortar has good heat storage and heat preservation effects and can absorb heat to weaken internal stress; and secondly, the soap powder is adopted to play a better role in lubrication and dispersion, so that the internal stress can be homogenized, the mortar is further beneficial to adapting to temperature change, and the freeze-thaw resistance is improved. The sodium bicarbonate is helpful for the crystal to absorb water and expand in the structural pore gaps from sparse to dense, so that a compact impervious area is gradually formed on the surface layer of the concrete structure towards depth, and the impervious capability of the whole structure is improved

The invention adopts soybean lecithin, silane coupling agent, aluminum powder and titanium dioxide to prepare the waterproof agent, has good stability and waterproofness, and carries out interaction on the introduced oxides of titanium, aluminum and the like to form dendritic crystals which are insoluble in water and firmly combined with concrete, thereby playing a role in enhancing the waterproofness. The titanium dioxide can generate electron transition under the action of crystallization, so that the effect of self-repairing healing is achieved, and the stability of the mortar is improved; in addition, the silane coupling agent and the soybean lecithin contain active groups, so that the silane coupling agent and the soybean lecithin are easy to generate crosslinking with calcium ions, aluminum ions and the like in cement hydration products to form a bridging effect, and the internal stress of mortar hardening can be relieved.

The diatom extract is prepared by mixing diatom with quick lime, not only disinfecting by using quick lime to kill harmful microorganisms on the surface, but also breaking the wall of diatom by using external heat and mechanical friction, which is beneficial to the dissolution of effective components, then leaching by using citric acid and ethanol, so that the dissolution of silicon components, antioxidant components and water-insoluble substances is improved, mixing is performed by using sodium chloride, the dissolved substances are modified, the stability of a waterproof agent is enhanced, and simultaneously the leaching temperature is controlled, so that the effective components and the modification reaction are easy to dissolve out due to the temperature change of materials. Ultrasonic excitation is utilized, so that the antioxidant component has high activity, and the durability is further improved. Meanwhile, the granularity is controlled, which is beneficial to improving the fluidity and the dispersibility of the mortar.

Detailed Description

The following is a detailed description of the embodiments of the present invention, but the present invention is not limited to these embodiments, and any modifications or substitutions in the basic spirit of the embodiments are included in the scope of the present invention as claimed in the claims.