Asphalt-based pre-coating waterproof system

An asphalt-based, pre-coating technology, applied in the direction of asphalt layered products, coatings, hydraulic material layered products, etc., can solve the problem of poor bonding ability of post-cast concrete, lack of asphalt-based pre-coating waterproof system, and inability to Application of waterproof engineering and other problems to achieve the effect of solving stability and viscosity, excellent cross-linking ability, and good binding force

Active Publication Date: 2020-08-18
SHENZHEN ZHUOBAO TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since this waterproof system has no protective layer and functional layer, the bonding ability with the post-cast concrete is not good, so the application scene is limited to the waterproof system on the roof, and cannot be applied to the waterproof project between floors
[0004] In summary, the prior art still lacks an asphalt-based precoat waterproofing system that can be widely used

Method used

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  • Asphalt-based pre-coating waterproof system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Preparation Example 1 Preparation of modified asphalt compound a1

[0054] (1) Mixing, adding asphalt into the reaction kettle by metering, and setting the temperature at 170°C;

[0055] (2) Modification, put the modifier into the reaction kettle, control the temperature at 165°C, and stir for 2 hours;

[0056] (3) Cross-linking, put 10g of tribasic lead sulfate and 10g of sulfur into the reactor, and disperse for 30min;

[0057] (4) Viscosity reduction, pass the above rubber material through the colloid mill, set the colloid mill gap to 3mm, then add 10g of polyethylene wax to the system, melt and disperse for 30min;

[0058] (5) Dispersion: Add 15kg of talcum powder, and make a rubber compound after uniform dispersion, which is counted as a1.

[0059] Described asphalt is 90# asphalt 30kg, 200# asphalt 5kg.

[0060] The modifier is 1kg of SBS, 1kg of SBR, 2kg of IIR, and 1kg of SIS; wherein the weight ratio among SBS, SBR, IIR and SIS is 1:1:2:1.

preparation Embodiment 2

[0061] Preparation Example 2 Preparation of modified asphalt compound a2

[0062] (1) Mixing, adding asphalt into the reaction kettle by metering, and setting the temperature at 170°C;

[0063] (2) Modification, put the modifier into the reaction kettle, control the temperature at 165°C, and stir for 2 hours;

[0064] (3) Cross-linking, put 100g of tribasic lead sulfate and 100g of sulfur into the reactor, and disperse for 30min;

[0065] (4) Viscosity reduction, pass the above rubber material through the colloid mill, set the colloid mill gap to 3mm, then add 100g of polyethylene wax to the system, melt and disperse for 30min;

[0066] (5) Dispersion: Add 30kg of talcum powder, and make a rubber compound after uniform dispersion, which is counted as a2.

[0067] Described asphalt is 90# asphalt 50kg, 200# asphalt 15kg.

[0068] The modifiers are SBS 6kg, SBR 6kg, IIR 12kg, and SIS 6kg; wherein the weight ratio among SBS, SBR, IIR and SIS is 1:1:2:1.

[0069] Preparation E...

preparation Embodiment 5

[0073] Preparation Example 5 Preparation of functional layer coating c1

[0074] The functional layer is mixed with the following components by weight: 20kg of plasticized styrene-acrylic emulsion, 30kg of ordinary Portland cement with a strength of 42.5, 2kg of 30-mesh sand, 5kg of 60-mesh sand, 2kg of 120-mesh sand, and 1kg of 200-mesh sand , functional additive 10g; wherein the weight ratio of plasticized styrene-acrylic emulsion, cement component and graded sand is 1:1.5:0.5.

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Abstract

The invention discloses an asphalt-based pre-coating waterproof system. A building surface to be pre-coated is used as a base surface and comprises a first modified asphalt layer, a base layer, a second modified asphalt layer, a protective layer and a functional layer in sequence from bottom to top; the protective layer is used for protecting an asphalt coating; the functional layer and post-castconcrete realize mutual adhesion of a body; the first modified asphalt layer and the second modified asphalt layer comprise the following components in parts by weight: 35 to 65 parts of asphalt, 5 to30 parts of a modifier, 15 to 30 parts of mineral powder, 0.01 to 0.1 part of a cross-linking agent, 0.01 to 0.1 part of a heat stabilizer and 0.01 to 0.1 part of a viscosity regulator; the modifiercomprises SBS, SBR, IIR and SIS. The protective layer and the functional layer take a polymer emulsion and a cement component as base materials, compounding of the same material is ensured, the integrity is good, a cement-based sand-containing coating layer is used as the functional layer, the weight ratio of the polymer emulsion to the cement component to graded sand is optimized, bonding with apost-cast concrete body is achieved, the bonding effect is remarkably improved, and the waterproof effect is more reliable.

Description

technical field [0001] The invention belongs to the technical field of waterproofing, in particular to an asphalt-based precoating waterproofing system. Background technique [0002] At present, the pre-paved waterproof membrane system used in the basement floor project, whether it is an asphalt-based membrane or a polymer membrane, has overlapping parts, especially the short-side overlapping parts, because the upper surface uses a non-removable isolation layer , the bonding reliability in reality is doubtful. Use the formed coil to lay on the base. Due to the flatness of the base at the project site, it is difficult to fit the coil and the base smoothly. When the concrete is poured later, the gravity of the concrete will evolve into the tensile force between the coils. At weak points such as overlapping edges, there is a direct pull between the coiled materials, resulting in waterproof failure. [0003] The present inventor has been researching in this technical field, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B11/02B32B11/10B32B27/36B32B27/02B32B11/04B32B13/00B32B13/04B32B7/10B32B37/24C08L95/00C08L53/02C08L9/06C08L23/22C08K3/34C09D125/14C09D7/61C04B28/04C04B111/27
CPCB32B5/02B32B7/10B32B11/02B32B11/04B32B11/10B32B13/00B32B13/04B32B37/24B32B2037/243B32B2262/0276B32B2307/7265B32B2419/00C04B28/04C04B2111/00508C04B2111/00612C04B2111/27C08L95/00C08L2205/025C08L2205/035C09D125/14C09D7/61C08L53/02C08L9/06C08L23/22C08K3/34C04B24/2641C04B14/06C04B2103/0068C04B24/36C04B24/04
Inventor 周敬益卢家安蒋继恒
Owner SHENZHEN ZHUOBAO TECH
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