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A bitumen-based waterproofing system for building roofs

An asphalt-based, architectural technology, applied in building roofs, asphalt coatings, roof decoration, etc., can solve the problem of unsystematic proposal of chemical ratio between waterproof coating layer and asphalt rubber layer, lack of asphalt-based waterproofing system, and incomplete coils on site Leveling and other problems, to avoid internal pulling force, improve segregation phenomenon, and reliable waterproof effect

Active Publication Date: 2021-11-19
SHENZHEN ZHUOBAO TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the chemical ratio of the waterproof coating layer and the asphalt rubber layer has not been systematically proposed, nor has it disclosed in detail how to overcome the problems of unevenness and insufficient viscosity of the coiled material on site during the specific construction, and the construction that is compatible with the chemical ratio design process, there is still room for improvement
[0005] In summary, the prior art still lacks an asphalt-based waterproofing system that can be widely used

Method used

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  • A bitumen-based waterproofing system for building roofs
  • A bitumen-based waterproofing system for building roofs
  • A bitumen-based waterproofing system for building roofs

Examples

Experimental program
Comparison scheme
Effect test

preparation Embodiment 1

[0045] Preparation Example 1 Preparation of Modified Asphalt Compound

[0046] (1) Mixing, adding asphalt into the reaction kettle by metering, and setting the temperature at 170°C;

[0047] (2) Modification, put the modifier into the reaction kettle, control the temperature at 165°C, and stir for 2 hours;

[0048] (3) Cross-linking, put 10g of tribasic lead sulfate and 10g of sulfur into the reactor, and disperse for 30min;

[0049] (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;

[0050] (5) Dispersion: Add 15kg of talcum powder, and disperse evenly to make rubber material a1.

[0051] Described asphalt is 90# asphalt 30kg, 200# asphalt 5kg. The modifiers are SBS 1kg, SBR 1kg, IIR 2kg, and SIS 1kg; wherein the weight ratio among SBS, SBR, IIR and SIS is 1:1:2:1. The weight percentage of the crosslinking agent based on the weight ...

preparation Embodiment 2

[0052] Preparation Example 2 Preparation of Modified Asphalt Compound

[0053] (1) Mixing, adding asphalt into the reaction kettle by metering, and setting the temperature at 170°C;

[0054] (2) Modification, put the modifier into the reaction kettle, control the temperature at 165°C, and stir for 2 hours;

[0055] (3) Cross-linking, put 75g of tribasic lead sulfate and 50g of sulfur into the reactor, and disperse for 30min;

[0056] (4) Viscosity reduction, pass the above rubber material through the colloid mill, set the colloid mill gap to 3mm, then add 50g of polyethylene wax to the system, melt and disperse for 30min;

[0057] (5) Dispersion: Add 22kg of talcum powder, and make a rubber compound after uniform dispersion, which is counted as a2.

[0058] Described asphalt is 90# asphalt 40kg, 200# asphalt 10kg.

[0059] The modifier is SBS 2kg, SBR 2kg, IIR3 kg, SIS 1kg; wherein the weight ratio between SBS, SBR, IIR and SIS is 1:1:1.5:0.5, and the weight of the crosslin...

preparation Embodiment 3

[0060] Preparation Example 3 Preparation of Modified Asphalt Compound Without Viscosity Modifier

[0061] (1) Mixing, adding asphalt into the reaction kettle by metering, and setting the temperature at 170°C;

[0062] (2) Modification, put the modifier into the reaction kettle, control the temperature at 165°C, and stir for 2 hours;

[0063] (3) Cross-linking, put 75g of tribasic lead sulfate and 50g of sulfur into the reactor, and disperse for 30min;

[0064] (4) Viscosity reduction, the above-mentioned sizing material is passed through the colloid mill, and the setting colloid mill gap is set to 3mm;

[0065] (5) Dispersion: Add 22kg of talcum powder, and make a rubber compound after uniform dispersion, which is counted as a3.

[0066] Described asphalt is 90# asphalt 40kg, 200# asphalt 10kg.

[0067] The modifier is SBS 2kg, SBR 2kg, IIR3 kg, SIS 1kg; wherein the weight ratio between SBS, SBR, IIR and SIS is 1:1:1.5:0.5, and the weight of the crosslinking agent is based ...

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Abstract

The present invention is an asphalt-based waterproofing system used on the top of a building. Taking the top of the building as the base surface, the order from bottom to top is as follows: the first modified asphalt rubber layer, the first tire base layer, and the second modified asphalt rubber layer. , the second base layer, the third modified asphalt rubber layer, the first modified asphalt rubber layer, the second modified asphalt rubber layer and the third modified asphalt rubber layer, in parts by weight, It includes the following components: 35-65 parts of asphalt, 5-30 parts of modifier, 15-30 parts of mineral powder, 0.01-0.1 part of crosslinking agent, 0.01-0.1 part of heat stabilizer, and 0.01-0.1 part of viscosity modifier. The present invention is directly molded at the construction site, and the content of crosslinking agent, thermal stabilizer, and viscosity regulator is increased sequentially to adhere to the base layer, and the waterproof system only bears the gravity extrusion of the post-cast structure, avoiding the internal pulling force caused by the waterproof coiled material , the waterproof effect is more reliable.

Description

technical field [0001] The invention belongs to the technical field of waterproofing, and in particular relates to an asphalt-based waterproofing system for building tops. Background technique [0002] In the construction industry, the roof waterproof construction of buildings with sloping roofs often requires a waterproof layer to be made on the base surface of the roof, and then a reinforced layer to be made on the waterproof layer. The material of the waterproof layer is generally an asphalt-based membrane or a polymer membrane. During the actual construction, due to the flatness of the base layer at the project site, it is difficult to fit the coiled material and the base layer smoothly, and there are overlapping parts of the coiled materials, especially the overlapping parts of the short sides. Since the upper surface uses a non-removable isolation layer, In reality, the bonding reliability is often not good, and it is easy to cause waterproof failure after a period of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D195/00C09D7/65C09D7/62E04D11/02
CPCC08L2205/025C08L2205/035C09D195/00C09D7/62C09D7/65E04D11/02C08L95/00C08L53/02C08L9/06C08L23/22C08L23/06C08K3/30C08K3/06C08K3/34Y02B80/32Y02A30/254
Inventor 卢家安蒋继恒周敬益
Owner SHENZHEN ZHUOBAO TECH