Polymer waterproof mortar formula

Abstract

The invention provides a polymer waterproof mortar formula, which relates to the technical field of building materials, and is prepared from the following raw materials: Portland cement, quartz sand, a polymer emulsion, cellulose ether, an expanding agent, a filler, a waterproof agent, a retarder, a fiber reinforced material and water. Through the synergistic effect of the polymer emulsion and the waterproof agent, the waterproof performance of the mortar is remarkably improved, and the impermeability and durability are enhanced, so that the waterproof mortar is suitable for a humid environment or a project exposed in water for a long time; by adding the fiber reinforced material and the filler, the crack resistance, toughness and durability of the mortar are remarkably improved, the risk of cracking and stripping is reduced, and the compression resistance and tensile property of the mortar are enhanced, so that the service life of the mortar is prolonged; by adding the materials, the waterproof coating can be widely applied to building waterproof engineering and has a good market application prospect.

Description

Technical Field

[0001] The invention relates to the technical field of building materials, in particular to a polymer waterproof mortar formula. Background Art

[0002] In the construction field, waterproofing projects are crucial to the structural safety and service life of buildings. Polymer waterproof mortar, as a commonly used building waterproof material, is widely used in various building waterproofing projects because of its certain waterproof performance, construction convenience and good adhesion to the base layer.

[0003] Although traditional polymer waterproof mortars have certain waterproof capabilities, their anti-seepage performance is often unsatisfactory when facing humid environments or projects that are exposed to water for a long time, resulting in leakage inside buildings; secondly, due to insufficient crack resistance and toughness, traditional polymer waterproof mortars cannot effectively disperse and absorb stress when subjected to these external forces, and are prone to cracking; in addition, some polymer waterproof mortars have poor fluidity and are difficult to mix, transport and apply, which not only increases the difficulty of construction and prolongs the construction time, but also causes the mortar to be unable to be evenly distributed during the construction process, resulting in problems such as inconsistent thickness, thereby reducing work efficiency and waterproofing effects. Summary of the Invention

[0004] The purpose of the present invention is to provide a polymer waterproof mortar formula to solve the technical problems existing in the prior art.

[0005] In order to achieve the above-mentioned object of the invention, the technical solution adopted by the present invention is:

[0006] A polymer waterproof mortar formula comprises the following raw materials: silicate cement, quartz sand, polymer emulsion, cellulose ether, expansion agent, filler, waterproofing agent, retarder, fiber reinforcement material and water.

[0007] Furthermore, the raw material components by weight are: 100-130 parts of Portland cement, 260-350 parts of quartz sand, 15-35 parts of polymer emulsion, 0.1-0.9 parts of cellulose ether, 4-15 parts of expansion agent, 15-30 parts of filler, 2-10 parts of waterproofing agent, 0.02-0.08 parts of retarder, 0.2-1.5 parts of fiber reinforcement material, and 40-120 parts of water.

[0008] Furthermore, the raw material weight components are: 120 parts of silicate cement, 310 parts of quartz sand, 25 parts of polymer emulsion, 0.6 parts of cellulose ether, 9 parts of expansion agent, 20 parts of filler, 5 parts of waterproofing agent, 0.05 parts of retarder, 0.9 parts of fiber reinforcement material, and 80 parts of water.

[0009] Furthermore, the cellulose ether is made of one or more of methyl cellulose, hydroxypropyl methyl cellulose, hydroxyethyl cellulose or carboxymethyl cellulose.

[0010] Furthermore, the expansion agent is made of one or more of calcium sulfoaluminate, quicklime or light-burned magnesium oxide.

[0011] Furthermore, the filler is made of one or more of heavy calcium carbonate, talc, silica fume or quartz powder.

[0012] Furthermore, the waterproofing agent is made of one or more of silane, acrylic emulsion, stearate or silicate.

[0013] Furthermore, the retarder is made of one or more of calcium lignin sulfonate, sodium gluconate, sodium tripolyphosphate or borax.

[0014] Furthermore, the fiber reinforcement material is made of one or more of polypropylene fiber, glass fiber, carbon fiber or steel fiber.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The present invention significantly improves the waterproof performance of the mortar through the synergistic effect of the polymer emulsion and the waterproofing agent, enhances the impermeability and durability, and makes the present invention suitable for projects in humid environments or exposed to water for a long time; the addition of fiber reinforcement materials and fillers significantly improves the crack resistance, toughness and durability of the mortar, reduces the risk of cracking and peeling, enhances its compressive and tensile properties, and thus extends its service life; the addition of cellulose ether and retarder improves the water retention and fluidity of the mortar, facilitates construction operations, and improves construction efficiency; the addition of the expansion agent compensates for the shrinkage of the mortar during the hardening process, prevents cracking, and improves dimensional stability; the addition of the above materials makes the present invention widely applicable to building waterproofing projects and has good market application prospects. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and technical effect of the present invention more clear, the specific embodiments of the present invention are described below. It should be understood that the specific embodiments described here are only used to explain the present invention and are not used to limit the present invention.

[0018] This embodiment provides a polymer waterproof mortar formula, which is made from the following raw materials: Portland cement, quartz sand, polymer emulsion, cellulose ether, expansion agent, filler, waterproofing agent, retarder, fiber reinforcement material, and water. The specific effects are as follows:

[0019] Portland cement: As the main cementitious material of mortar, it provides strength and adhesion, and works synergistically with other components to improve the durability and stability of mortar;

[0020] Quartz sand: As aggregate, it fills the voids in the mortar, provides skeleton support, improves the density and compressive strength of the mortar, and improves the wear resistance and impact resistance of the mortar;

[0021] Polymer emulsion: acts as a modifier to improve the performance of mortar;

[0022] Cellulose ether: has a thickening effect and can increase the viscosity of waterproof mortar;

[0023] Expansion agent: compensates for the shrinkage of mortar during hardening and prevents cracking;

[0024] Filler: fills the voids in the mortar and improves its physical properties;

[0025] Waterproofing agent: improves the waterproof performance of mortar and prevents water penetration;

[0026] Retarder: prolongs the setting time of mortar and facilitates construction operations;

[0027] Fiber reinforcement material: evenly dispersed in the waterproof mortar to form a three-dimensional transversely distributed reinforcement system, improving the crack resistance and toughness of the mortar.

[0028] Example 1:

[0029] The raw material components by weight are: 100-130 parts of Portland cement, 260-350 parts of quartz sand, 15-35 parts of polymer emulsion, 0.1-0.9 parts of cellulose ether, 4-15 parts of expansion agent, 15-30 parts of filler, 2-10 parts of waterproofing agent, 0.02-0.08 parts of retarder, 0.2-1.5 parts of fiber reinforcement material, and 40-120 parts of water;

[0030] S1: drying quartz sand at 120°C until the moisture content is less than 0.5%, screening the sand, stirring the polymer emulsion, and dissolving the cellulose ether in water to form a uniform solution;

[0031] S2: Portland cement, quartz sand, filler, expansion agent, retarder and fiber reinforcement material are weighed according to the corresponding parts by weight, and the above materials are added to the high-efficiency mixer. During this process, the quartz sand is added to the high-efficiency mixer in 3-5 times, with an interval of 1-5 minutes between each addition, and mixed at a speed of 40 rpm for 10-15 minutes to ensure that each material is evenly distributed to form a mixed dry material;

[0032] S3: adding a defoamer to a polymer emulsion having a pH value of 8.5-9.5 and stirring at a low speed to form a pretreated polymer emulsion; adding a waterproofing agent and a cellulose ether solution to the pretreated polymer emulsion to form a mixed solution; pouring the mixed solution into the mixed dry materials in S2 and mechanically stirring the mixture at a stirring speed of 50-80 r / min and a mixing time of 10-25 min to form an initial mortar;

[0033] S4: Add a preset amount of water by weight to the above mortar and continue stirring for 20-30 minutes until the various materials in the mortar are fully mixed to achieve the desired consistency and uniformity;

[0034] S5: The mixed mortar in S4 is allowed to stand at room temperature for 30-45 minutes to fully mature, and the final mortar is subjected to performance testing; the performance testing includes waterproof performance, compressive strength, bonding strength and crack resistance;

[0035] S6: The final mortar that has passed the test is packed in moisture-proof packaging and sealed for storage.

[0036] It should be noted that the silicate cement complies with GB 175-2007 standard, and has a strength grade greater than 42.5, and the quartz sand has a particle size of 0.15-2.0 mm and is continuously graded quartz sand.

[0037] Example 2:

[0038] The raw material weight components are: 100 parts of Portland cement, 260 parts of quartz sand, 15 parts of polymer emulsion, 0.1 parts of methyl cellulose, 4 parts of calcium sulfoaluminate, 15 parts of heavy calcium carbonate, 2 parts of silane, 0.02 parts of calcium lignin sulfonate, 0.2 parts of polypropylene fiber, and 40 parts of water;

[0039] S1: drying quartz sand at 120°C until the moisture content is less than 0.5% and screening the sand, stirring the polymer emulsion to form a uniform solution, and dissolving the cellulose ether in water to form a uniform solution;

[0040] S2: Portland cement, quartz sand, ground calcium carbonate, calcium sulfoaluminate, calcium lignin sulfonate, and polypropylene fiber are weighed according to the corresponding parts by weight and added to a high-efficiency mixer. During this process, the quartz sand is added to the high-efficiency mixer in three batches, with an interval of 1 minute between each addition. The mixture is mixed and stirred at a speed of 40 rpm for 10 minutes to ensure that the materials are evenly distributed to form a mixed dry material.

[0041] S3: adding a defoamer to a polymer emulsion having a pH value of 8.5 and stirring at a low speed to form a pretreated polymer emulsion; adding silane and hydroxypropyl methylcellulose solution to the pretreated polymer emulsion to form a mixed solution; pouring the mixed solution into the mixed dry materials in S2 and mechanically stirring the mixture at a stirring speed of 50 r / min and a mixing and stirring time of 10 minutes to form an initial mortar;

[0042] S4: Add a preset amount of water by weight to the above mortar and continue stirring for 20 minutes until the various materials in the mortar are fully mixed to achieve the desired consistency and uniformity;

[0043] S5: The mixed mortar in S4 is allowed to stand at room temperature for 30 minutes to fully mature, and the final mortar is subjected to performance testing; the performance testing includes waterproof performance, compressive strength, bonding strength and crack resistance;

[0044] S6: The final mortar that has passed the test is packed in moisture-proof packaging and sealed for storage.

[0045] It should be noted that the silicate cement complies with GB 175-2007 standard, and the strength grade is greater than 42.5, and the quartz sand particle size is 0.15 mm continuous graded quartz sand.

[0046] Example 3:

[0047] The raw material weight components are: 130 parts of Portland cement, 350 parts of quartz sand, 35 parts of polymer emulsion, 0.9 parts of light-burned magnesia, 15 parts of silica fume, 30 parts of talc, 10 parts of stearate, 0.08 parts of tripolyphosphate, 0.5 parts of carbon fiber, and 120 parts of water;

[0048] S1: drying quartz sand at 120°C until the moisture content is less than 0.5% and screening the sand, stirring the polymer emulsion to form a uniform solution, and dissolving the cellulose ether in water to form a uniform solution;

[0049] S2: Portland cement, quartz sand, silica fume, light-burned magnesia, sodium gluconate, and sodium tripolyphosphate were weighed according to the corresponding parts by weight and added to a high-efficiency mixer. During this process, the quartz sand was added to the high-efficiency mixer in 5 batches, with an interval of 5 minutes between each addition. The mixture was stirred at a speed of 40 rpm for 15 minutes to ensure that the materials were evenly distributed to form a mixed dry material.

[0050] S3: adding a defoamer to a polymer emulsion having a pH value of 9.5 and stirring at a low speed to form a pretreated polymer emulsion; adding stearate and a carbon fiber solution to the pretreated polymer emulsion to form a mixed solution; pouring the mixed solution into the mixed dry materials in S2 and mechanically stirring the mixture at a stirring speed of 80 r / min and a mixing time of 25 min to form an initial mortar;

[0051] S4: Add a preset amount of water by weight to the above mortar and continue stirring for 30 minutes until the various materials in the mortar are fully mixed to achieve the desired consistency and uniformity;

[0052] S5: The mixed mortar in S4 is allowed to stand at room temperature for 45 minutes to fully mature, and the final mortar is subjected to performance tests; the performance tests include waterproof performance, compressive strength, bonding strength and crack resistance;

[0053] S6: The final mortar that has passed the test is packed in moisture-proof packaging and sealed for storage.

[0054] It should be noted that the silicate cement complies with GB 175-2007 standard, and has a strength grade greater than 42.5, and the quartz sand has a particle size of 0.15-2.0 mm and is continuously graded quartz sand.

[0055] Example 4:

[0056] The raw material weight components are: 120 parts of Portland cement, 310 parts of quartz sand, 25 parts of polymer emulsion, 0.6 parts of carboxymethyl cellulose, 9 parts of expansion agent, 20 parts of quartz powder, 5 parts of silicate, 0.05 parts of borax, 0.9 parts of steel fiber, and 80 parts of water;

[0057] S1: drying quartz sand at 120°C until the moisture content is less than 0.5% and screening the sand, stirring the polymer emulsion to form a uniform solution, and dissolving the cellulose ether in water to form a uniform solution;

[0058] S2: Portland cement, quartz sand, quartz powder, expansion agent, borax and steel fiber are weighed according to the corresponding parts by weight, and the above materials are added to the high-efficiency mixer. During this process, the quartz sand is added to the high-efficiency mixer in 3-5 times, with an interval of 1-5 minutes each time, and mixed at a speed of 40 rpm for 10-15 minutes to ensure that each material is evenly distributed to form a mixed dry material;

[0059] S3: adding a defoamer to a polymer emulsion having a pH value of 8.5-9.5 and stirring at a low speed to form a pretreated polymer emulsion; adding a silicate and a carboxymethyl cellulose solution to the pretreated polymer emulsion to form a mixed solution; pouring the mixed solution into the mixed dry materials in S2 and mechanically stirring the mixture at a stirring speed of 50-80 r / min and a mixing time of 10-25 min to form an initial mortar;

[0060] S4: Add a preset amount of water by weight to the above mortar and continue stirring for 20-30 minutes until the various materials in the mortar are fully mixed to achieve the desired consistency and uniformity;

[0061] S5: The mixed mortar in S4 is allowed to stand at room temperature for 30-45 minutes to fully mature, and the final mortar is subjected to performance testing; the performance testing includes waterproof performance, compressive strength, bonding strength and crack resistance;

[0062] S6: The final mortar that has passed the test is packed in moisture-proof packaging and sealed for storage.

[0063] It should be noted that the silicate cement complies with GB 175-2007 standard, and has a strength grade greater than 42.5, and the quartz sand has a particle size of 0.15-2.0 mm and is continuously graded quartz sand.

[0064]

[0065] Table 1

[0066] According to Table (1), the 24h absorption rate of all embodiments is significantly lower than 5%, among which Example 4 has the lowest water absorption rate and the best waterproof performance; the 28-day compressive strength of all embodiments reaches 15 MPa, among which Example 4 has the highest compressive strength, and it has excellent compressive performance; the 28-day bonding strength of all embodiments reaches or exceeds 1 MPa, among which Example 4 has the highest bonding strength, and it has excellent bonding performance; all embodiments have no visible cracks, indicating that they have good crack resistance; in summary, Example 4 is the optimal embodiment, its waterproof performance, compressive strength and bonding strength all reach the highest level, and its comprehensive performance is the best, which is suitable for projects with high performance requirements.

[0067] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A polymer waterproof mortar formula, characterized by: The product is made of the following raw materials: silicate cement, quartz sand, polymer emulsion, cellulose ether, expansion agent, filler, waterproofing agent, retarder, fiber reinforcement material and water.

2. The polymer waterproof mortar formula according to claim 1, characterized in that: The raw materials are composed by weight of: 100-130 parts of Portland cement, 260-350 parts of quartz sand, 15-35 parts of polymer emulsion, 0.1-0.9 parts of cellulose ether, 4-15 parts of expansion agent, 15-30 parts of filler, 2-10 parts of waterproofing agent, 0.02-0.08 parts of retarder, 0.2-1.5 parts of fiber reinforcement material, and 40-120 parts of water.

3. The polymer waterproof mortar formula according to claim 2, characterized in that: The raw material components by weight are: 120 parts of Portland cement, 310 parts of quartz sand, 25 parts of polymer emulsion, 0.6 parts of cellulose ether, 9 parts of expansion agent, 20 parts of filler, 5 parts of waterproofing agent, 0.05 parts of retarder, 0.9 parts of fiber reinforcement material, and 80 parts of water.

4. The polymer waterproof mortar formula according to any one of claims 1 to 3, characterized in that: The cellulose ether is made of one or more of methyl cellulose, hydroxypropyl methyl cellulose, hydroxyethyl cellulose or carboxymethyl cellulose.

5. The polymer waterproof mortar formula according to claims 1-3, characterized in that: The expansion agent is made of one or more of calcium sulfoaluminate, quicklime or light-burned magnesium oxide.

6. The polymer waterproof mortar formula according to claims 1-3, characterized in that: The filler is made of one or more of heavy calcium carbonate, talcum powder, silica fume or quartz powder.

7. The polymer waterproof mortar formula according to claims 1-3, characterized in that: The waterproofing agent is made of one or more of silane, acrylic emulsion, stearate or silicate.

8. The polymer waterproof mortar formula according to claims 1-3, characterized in that: The retarder is made of one or more of calcium lignin sulfonate, sodium gluconate, sodium tripolyphosphate or borax.

9. The polymer waterproof mortar formula according to claims 1-3, characterized in that: The fiber reinforcement material is made of one or more of polypropylene fiber, glass fiber, carbon fiber or steel fiber.

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