Warm mix asphalt and preparation method thereof

A warm-mix asphalt and mixture technology, applied in the direction of climate change adaptation, etc., can solve problems such as asphalt aging, high energy consumption, and heavy environmental pollution, and achieve the effects of reducing aging, simplifying production procedures, and extending transportation distances

Inactive Publication Date: 2012-11-28
SHENZHEN OCEANPOWER NEW MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, hot mix asphalt mixture is mixed at a high temperature of 160°C-180°C, which has the di

Method used

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  • Warm mix asphalt and preparation method thereof
  • Warm mix asphalt and preparation method thereof
  • Warm mix asphalt and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0020] Example 1

[0021] Take 10054g of aggregate and heat it to 150°C for drying, add it to the mixing pot, keep the temperature in the mixing pot at 140°C, take 498g of 70# asphalt and heat it to 154°C, add it to the mixing pot, and sprinkle 32.6g of warm mix on the The surface of the asphalt was mixed in the mixing pot for 135s; 311g of mineral powder was added to the mixing pot and mixed for 85s, wherein 25% of the weight of the mineral powder was slaked lime; Forming at 130°C, the warm mix asphalt mixture is obtained.

Example Embodiment

[0022] Example 2

[0023] Take 10158g of aggregate and heat it to 145°C for drying, add it to the mixing pot, keep the temperature in the mixing pot at 145°C, take 381g of 70# asphalt and heat it to 160°C, add it to the mixing pot, and sprinkle 32.8g warm mix on The surface of the asphalt was mixed in the mixing pot for 120s; 423g of mineral powder was added to the mixing pot and mixed for 95s; the mixed mixture was taken out of the pot at 140°C and formed at 135°C to obtain a warm mix asphalt mixture .

Example Embodiment

[0024] Example 3

[0025] Take 10189g of aggregate and heat it to 155°C for drying, add it to the mixing pot, keep the temperature in the mixing pot at 140°C, take 435g of 70# asphalt and heat it to 158°C, add it to the mixing pot, and sprinkle 33.1g of warm mix on the The surface of the asphalt was mixed in the mixing pot for 135s; 424g of mineral powder was added to the mixing pot and mixed for 100s; the mixed mixture was taken out of the pot at 135°C and formed at 130°C to obtain a warm mix asphalt mixture .

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Abstract

The invention discloses warm mix asphalt and a preparation method thereof. The warm mix asphalt comprises asphalt, aggregate, mineral powder and warm mixing agent, wherein the warm mixing agent is inorganic silico-aluminate of which the water content is 18 to 23 percent; based on 1 weight part of asphalt, the warm mix asphalt contains 15 to 30 parts of aggregate, 0.5 to 1.5 parts of mineral powder and 0.05 to 0.01 part of warm mixing agent; and the invention discloses the preparation method for the warm mix asphalt, and adding sequence, control temperature and mixing time of the materials are detailed in the method. According to the warm mix asphalt, the mixing temperature of the asphalt is effectively reduced, consumption of fuel and emission of harmful gases are reduced, damage to the environment and harm to health of constructors are reduced, and storage type production is facilitated; and by the preparation method for the warm mix asphalt, the production procedures of the mixture are simplified, the warm mix asphalt can be produced in the conventional equipment, and equipment input and maintenance cost are reduced.

Description

【Technical field】 [0001] The invention belongs to the technical field of road engineering materials, and relates to an asphalt mixture and a preparation method thereof. 【Background technique】 [0002] Hot mix asphalt pavement has been developed for decades, and because of its good road performance, hot mix asphalt has been widely used. However, hot mix asphalt mixture is mixed at a high temperature of 160°C-180°C, which has the disadvantages of heavy environmental pollution, high energy consumption, and serious asphalt aging. [0003] As early as the 1990s, many countries in Europe and other places signed the "Kyoto Protocol". In 1995, Shell and Kolo Veidekke (Norway) first jointly developed warm mix asphalt (WMA for short). At the German Asphalt Forum in 1997, the first International Asphalt Pavement Conference in Sydney in 2000 and the second European Asphalt Conference in Barcelona in 2000, WMA received large-scale publicity and introduction, and won awards in Europe, A...

Claims

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Application Information

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IPC IPC(8): C04B26/26
CPCY02A30/30
Inventor 李志英何唯平
Owner SHENZHEN OCEANPOWER NEW MATERIALS TECH
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