High-flexibility leakage-resistant waterproof mortar

An anti-seepage and waterproof, high-flexibility technology, applied in the field of building materials, can solve the problems of polluted water sources, serious hazards, waste of land and resources, etc., and achieve the effects of protecting the environment, improving impermeability, and avoiding the occupation of cultivated land

Active Publication Date: 2017-12-29
SOUTHEAST UNIV
3 Cites 13 Cited by

AI-Extracted Technical Summary

Problems solved by technology

At present, there is no good treatment method for sawdust, and it can only be piled up. The piling up...
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Abstract

High-flexibility leakage-resistant waterproof mortar is prepared from component in weight ratio as follows: 300-500 parts of cement, 100-300 parts of sawdust, 0.5-4 parts of a water-retaining thickener, 5-30 parts of polymer powder, 20-40 parts of bentonite, 0.2-2 parts of a rheological agent, 5-30 parts of an active compound, 1-3 parts of a water repellent, 30-60 parts of ultrafine powder, 0.5-2 parts of an early strength agent and 300-500 parts of sand. A continuous closed polymer film can be formed in the prepared mortar, and the active compound in the mortar can be crystalized and expanded to block capillary channels, so that the mortar has the characteristics of high binding strength, good flexibility, high strength, good leakage resistance, simple preparation process and low cost, can be applied widely to waterproofing and damp proofing of basements, waterproofing of roofs and external walls of buildings, waterproofing of underground garages, integral waterproofing of water tanks and water towers and the like and has large market space and high practicability.

Technology Topic

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  • High-flexibility leakage-resistant waterproof mortar
  • High-flexibility leakage-resistant waterproof mortar
  • High-flexibility leakage-resistant waterproof mortar

Examples

  • Experimental program(6)

Example Embodiment

[0027] Example 1:
[0028] A preparation method of highly flexible impermeable waterproof mortar, which is composed of: cement: 500 parts, sawdust 300 parts, water-retaining thickener: 4 parts, polymer rubber powder: 30 parts, bentonite: 30 parts, rheological agent: 2 parts, active compound: 30 parts, water repellent: 2 parts; ultra-fine powder: 30 parts, early strength agent: 2 parts, sand: 300 parts.
[0029] The cement is aluminate cement; the water-retaining thickener is hydroxyethyl methyl cellulose ether; the polymer rubber powder is a latex powder copolymerized with vinyl acetate and ethylene, with a solid content of ≥98%, fine Degree 0.5-8μm; the moisture content of the bentonite is <10%, and the expansion ratio in 24h is greater than 10; the rheological agent is a mixture of a naphthalene-based water reducing agent and sodium lignosulfonate with a mass ratio of 7:3; the active compound is Zirconium silicone; the water repellent is calcium stearate water repellent; the ultra-fine powder is a mixture of silica fume and mineral powder with a mass ratio of 2:3; the early strength agent is sodium sulfate; The sawdust mentioned is the sawdust produced during the cutting process of organic polymer artificial marble, with a particle size of 200-100 mesh, and a moisture content ≤0.2%; the sand is river sand with a moisture content of <0.2%, and the gradation is: particle size The proportion of 20 meshes or more and the maximum particle size less than 1mm is 2wt%, the proportion of particle size 20-40 mesh is 55wt%, the proportion of particle size 40-80 mesh is 38wt%, and the proportion of particle size below 80 mesh is 5wt%.
[0030] Stir the above-mentioned raw materials uniformly, add water and stir, and control the consistency of the mortar from 70 to 80 mm to obtain a highly flexible, impermeable and waterproof mortar.
[0031] The 28-day compressive strength is 26MPa, the 28-day impermeability pressure is 1.6MPa, and the compression ratio is 2.75.

Example Embodiment

[0032] Example 2:
[0033] A preparation method of highly flexible impermeable waterproof mortar, which is composed of: cement: 450 parts, sawdust 100 parts, water-retaining thickener: 2 parts, polymer powder: 40 parts, bentonite: 20 parts, rheological agent: 2 parts, active compound: 5 parts, water-repellent agent: 3 parts; ultra-fine powder: 60 parts, early strength agent: 1 part, sand: 500 parts.
[0034] The cement is aluminate cement; the water-retaining thickener is methyl cellulose ether; the polymer rubber powder is a latex powder copolymerized with vinyl acetate and ethylene, with a solid content of ≥98% and a fineness of 0.5~ 8μm; the moisture content of the bentonite is less than 10%, and the expansion ratio in 24 hours is greater than 10; the rheological agent is a mixture of a naphthalene-based water reducing agent and calcium sodium lignosulfonate with a mass ratio of 7:3; the active compound is silicone Zirconium; the water repellent is a modified water repellent; the ultrafine powder is a mixture of silica fume and heavy calcium powder with a mass ratio of 2:3; the early strength agent is triethanolamine; the sawdust Sawdust produced during the cutting process of organic polymer artificial marble, with a particle size of 200-100 meshes and a moisture content of ≤0.2%; the sand is river sand with a moisture content of <0.2%, and the gradation is: the particle size is above 20 mesh And the proportion of the largest particle size less than 1mm is 1wt%, the proportion of the particle size 20-40 mesh is 65wt%, the proportion of the particle size 40-80 mesh is 31wt%, and the proportion of the particle size less than 80 mesh is 3wt%.
[0035] Stir the above-mentioned raw materials uniformly, add water and stir, and control the consistency of the mortar from 70 to 80 mm to obtain a highly flexible, impermeable and waterproof mortar.
[0036] The 28-day compressive strength is 30MPa, the 28-day impermeability pressure is 1.8MPa, and the compression ratio is 2.5.

Example Embodiment

[0037] Example 3:
[0038] A preparation method of highly flexible impermeable waterproof mortar, which consists of cement: 300 parts, sawdust 150 parts, water-retaining thickener: 0.5 parts, polymer rubber powder: 5 parts, bentonite: 40 parts, rheological agent: 0.2 parts, active compound: 15 parts, water-repellent: 3 parts; ultra-fine powder: 50 parts, early strength agent: 2 parts, sand: 440 parts.
[0039] Wherein the cement is sulfoaluminate cement; the water-retaining thickener is hydroxyethyl cellulose ether; the polymer rubber powder is a latex powder copolymerized with vinyl acetate and ethylene, with a solid content of ≥98%, fineness 0.5~8μm; the moisture content of the bentonite is less than 10%, and the expansion ratio in 24 hours is greater than 10; the rheological agent is a mixture of naphthalene-based water reducing agent, sodium lignosulfonate, and calcium lignosulfonate, with a mass ratio of 3:1 :1; The active compound is silicone zirconium; The water repellent is an organosilicon water repellent; The ultrafine powder is a mixture of silica fume and fly ash with a mass ratio of 2:3; The strong agent is calcium formate; the sawdust is the sawdust produced during the cutting of organic polymer artificial marble, the particle size is 200-100 mesh, and the moisture content is ≤0.2%; the sand is machine-made sand, and the moisture content is less than 0.2% , The gradation is: 0.5wt% of particle size above 20 mesh and maximum particle size less than 1mm, particle size of 20-40 mesh proportion is 60wt%, particle size 40-80 mesh proportion is 37.5wt%, particle size 80 mesh The following ratio is: 2wt%.
[0040] Stir the above-mentioned raw materials uniformly, add water and stir, and control the consistency of the mortar from 70 to 80 mm to obtain a highly flexible, impermeable and waterproof mortar.
[0041] The 28-day compressive strength is 25MPa, the 28-day impermeability pressure is 1.7MPa, and the compression ratio is 2.65.
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PUM

PropertyMeasurementUnit
Compressive strength26.0mPa
Impermeability pressure1.6mPa
Compressive strength30.0mPa
tensileMPa
Particle sizePa
strength10

Description & Claims & Application Information

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