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A kind of warm mix agent, SBS/SBR modified warm mix asphalt mixture and preparation method

A technology of warm mix asphalt and warm mix agent, which is applied in the direction of climate change adaptation, etc., can solve the problem that it is difficult to meet the performance requirements of warm mix asphalt mixture, the performance of asphalt mixture is high and low temperature is reduced, and it is difficult to ensure the performance requirements of asphalt mixture, etc. problems, to achieve the effect of improving water damage resistance, poor high temperature performance, and reducing harmful gas emissions

Active Publication Date: 2021-10-22
山东高速路用新材料技术有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to obtain a warm mix asphalt mixture that is more suitable for construction, saves energy, and has better environmental and ecological indicators, warm mix agents can generally be added to the hot mix asphalt mixture. The existing warm mix agents include sasobit, sasowam, REDISET, Asphaltan-B, etc.; however, for the hot mix asphalt mixture prepared by the above SBS modified asphalt or SBR modified asphalt, directly adding a single warm mix agent can reduce the mixing temperature, but the reduction is limited. Generally, it can only be lowered by 10-15°C, and the high and low temperature performance of asphalt mixture will decrease accordingly, making it difficult to meet the performance requirements of warm asphalt mixture
In addition, due to the reduction of mixing temperature, when SBS or SBR modified 70# base asphalt is used in the preparation of warm mix asphalt mixture, it will be difficult to guarantee or improve the performance requirements of asphalt mixture due to the viscosity characteristics of 70# base asphalt

Method used

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  • A kind of warm mix agent, SBS/SBR modified warm mix asphalt mixture and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Preparation of warm mixing agent: Take 94% of aromatic oil, 4% of slaked lime and 2% of quaternary ammonium surfactant according to mass percentage, heat the aromatic oil to 80-130°C, and then add slaked lime and quaternary ammonium The salt surfactant is added to the aromatic oil, and stirred for 5-15 minutes to obtain a warm mixing agent.

[0037] Preparation of SBS modified warm mix asphalt: according to mass percentage, take 86% of 110# base asphalt, 4% of SBS modifier, and 10% of warm mix agent respectively; heat 110# base asphalt to a temperature of 130~ 150°C, then add SBS modifier to 110# base asphalt, shear and stir for 30 to 60 minutes to obtain SBS modified asphalt; finally add the aforementioned warm mix agent to SBS modified asphalt, and continue to shear and stir for 5 ~10 minutes to obtain SBS modified warm mix asphalt.

[0038] Preparation of SBS modified warm mix asphalt mixture: the aggregate is prepared into SMA-10 aggregate, and according to the mas...

Embodiment 2

[0040] Preparation of warm mixing agent: Take 86% aromatic oil, 8% slaked lime and 6% quaternary ammonium salt surfactant according to mass percentage, heat the aromatic oil to 80-130°C, and then mix slaked lime and quaternary ammonium The salt surfactant is added to the aromatic oil, and stirred for 5-15 minutes to obtain a warm mixing agent.

[0041]Preparation of SBR modified warm mix asphalt: according to the mass percentage, take 92% of 130# base asphalt, 2% of SBR modifier, and 6% of warm mix agent; heat 130# base asphalt to a temperature of 130~ 150°C, then add SBR modifier to 130# base asphalt, shear and stir for 30 to 60 minutes to obtain SBR modified asphalt; finally add the aforementioned warm mix agent to SBR modified asphalt, and continue to shear and stir for 5 ~10 minutes to obtain SBR modified warm mix asphalt.

[0042] Preparation of SBR modified warm-mix asphalt mixture: the aggregate is prepared into AC-13 aggregate, and 86.5% of aggregate, 5.5% of SBR modi...

Embodiment 3

[0044] Preparation of warm mixing agent: Take 90% of aromatic oil, 6% of slaked lime and 4% of quaternary ammonium surfactant according to mass percentage, heat the aromatic oil to 80-130°C, and then add slaked lime and quaternary ammonium The salt surfactant is added to the aromatic oil, and stirred for 5-15 minutes to obtain a warm mixing agent.

[0045] Preparation of SBS modified warm mix asphalt: according to mass percentage, take 89% of 110# base asphalt, 3% of SBS modifier, and 8% of warm mix agent respectively; heat 110# base asphalt to a temperature of 130~ 150°C, then add SBS modifier to 110# base asphalt, shear and stir for 30 to 60 minutes to obtain SBS modified asphalt; finally add the aforementioned warm mix agent to SBS modified asphalt, and continue to shear and stir for 5 ~10 minutes to obtain SBS modified warm mix asphalt.

[0046] Preparation of SBS modified warm mix asphalt mixture: the aggregate is prepared into SMA-16 aggregate, and 83.8% of aggregate, 5...

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Abstract

The invention discloses a warm mix agent, SBS / SBR modified warm mix asphalt mixture and a preparation method thereof, belonging to the technical field of road construction. The warm mix agent includes aromatic hydrocarbon oil, slaked lime and quaternary ammonium salt surfactant; modified warm mix asphalt includes base asphalt, SBS or SBR, and the aforementioned warm mix agent; modified warm mix asphalt mixture includes modified warm mix asphalt , aggregates, mineral powder and natural asphalt. The warm-mix asphalt mixture of the present invention ensures high and low-temperature performance while lowering the mixing and molding temperatures by more than 35°C compared with similar hot-mix asphalt mixtures, reducing energy consumption and reducing the emission of harmful gases. Conducive to environmental protection.

Description

technical field [0001] The invention relates to the technical field of road construction, in particular to a warm-mix asphalt mixture in road engineering, in particular to a warm-mix agent, SBS / SBR modified warm-mix asphalt mixture and a preparation method. Background technique [0002] The asphalt mixture used in road engineering is generally divided into two types according to the construction temperature: hot mix asphalt mixture and cold mix asphalt mixture. Hot mix asphalt mixture is widely used in road construction. However, with the demand for environmental protection and environmental protection, hot mix asphalt mixture cannot continue to meet the requirements of social production due to the defects of high pollution and high energy consumption. On the contrary, cold mix Although asphalt mixture has low pollution and low energy consumption, its comprehensive performance is low, and the construction quality cannot be guaranteed. In the late 1990s, developed countries ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/00C04B26/26
CPCC04B26/26C04B40/0039C04B2111/0075C04B24/00C04B22/064C04B2103/40C04B14/14C04B18/141C04B24/2676Y02A30/30
Inventor 高国华姜竹昌李传海曹洪亮白玉铎尹永胜阚涛金龙飞
Owner 山东高速路用新材料技术有限公司
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