阅读说明：本技术 一种温拌再生沥青混合料用添加剂及其制备方法 (A kind of warm-mixed recycled asphalt mixture additive and preparation method thereof ) 是由 卢吉 黄绍龙 肖铭钊 沈凡 丁庆军 方四发 匡罗飞 储昭胜 于 2019-08-23 设计创作，主要内容包括：本发明公开了一种温拌再生沥青混合料用添加剂,按重量份数计,包括如下原料：温拌剂7～9份,再生剂2～4份；所述温拌剂按重量份数计包括如下原料：树脂100份,表面活性剂5～10份,松节油乳液30～50份；所述表面活性剂的原料包括摩尔比为10：4～6的妥尔油、浓硫酸；所述松节油乳液的原料按重量份数计包括松节油10份,醋酸1～2份；所述再生剂按重量份数计包括如下原料：三梨糖醇1～3份、硬脂酸铝4～6份、糖醛抽出油7～9份；本发明还提供了温拌再生沥青混合料用添加剂的制备方法以及温拌再生沥青路面混合料。本发明的温拌再生沥青混合料用添加剂同时具备温拌和改性再生的功能,实现RAP的冷添加并使老化沥青恢复性能。(The invention discloses a kind of warm-mixed recycled asphalt mixture additives, according to parts by weight, including the following raw material: 7~9 parts of warm-mixing agent, 2~4 parts of regenerative agent；The warm-mixing agent includes the following raw material according to parts by weight: 100 parts of resin, 5~10 parts of surfactant, 30~50 parts of turpentine fat liquor；The raw material of the surfactant includes tall oil, the concentrated sulfuric acid that molar ratio is 10:4~6；The raw material of the turpentine fat liquor includes 10 parts of turpentine oil, 1~2 part of acetic acid according to parts by weight；The regenerative agent includes the following raw material according to parts by weight: 1~3 part of minashi sugar alcohol, 4~6 parts of aluminum stearate, 7~9 parts of oil of alditol extraction；The present invention also provides the preparation method of warm-mixed recycled asphalt mixture additive and warm mix asphalt pavement regeneration mixtures.Warm-mixed recycled asphalt mixture of the invention is provided simultaneously with the function of warm mix and modification regeneration with additive, realizes the cold addition of RAP and makes aged asphalt restorability.)

1. a kind of warm-mixed recycled asphalt mixture additive, which is characterized in that according to parts by weight, including the following raw material: temperature Mix 7~9 parts of agent, 2~4 parts of regenerative agent；

The warm-mixing agent includes the following raw material according to parts by weight: 100 parts of resin, 5~10 parts of surfactant, and turpentine fat liquor 30~50 parts；The raw material of the surfactant includes tall oil, the concentrated sulfuric acid that molar ratio is 10:4~6；The turpentine oil cream The raw material of liquid includes 10 parts of turpentine oil, 1~2 part of acetic acid according to parts by weight；

The regenerative agent includes the following raw material according to parts by weight: 1~3 part of minashi sugar alcohol, 4~6 parts of aluminum stearate, alditol extraction 7~9 parts of oil.

2. warm-mixed recycled asphalt mixture additive as described in claim 1, which is characterized in that the fat of the tall oil Acid content > 38%, iodine number < 120；The concentrated sulfuric acid concentration > 98%；The terebinthine firpene content is greater than 80%, acid esters ≤1.0mg/g；The mass content of acetic acid is 30~35% in the acetic acid；The resin be rosin resin, C9 Petropols and One of terpene resin.

3. a kind of preparation method of any warm-mixed recycled asphalt mixture additive of claim 1-2, feature exist In the method is using raw material proportioning described in claim 1 and includes the following steps:

Step 1 prepares regenerative agent: under the conditions of 50 DEG C~60 DEG C, to addition minashi sugar alcohol 1~3 in 7~9 parts of oil of alditol extraction Part, 4~6 parts of aluminum stearate, stir and evenly mix, obtain regenerative agent；

Step 2 prepares warm-mixing agent:

S1, tall oil is packed into reactor, instills the concentrated sulfuric acid while stirring, obtains intermediate product；By the intermediate product Titration of Alkali while stirring, until pH value of solution between 8.5~9.5, stops titration, obtains surfactant；

S2, turpentine oil and acetic acid are stirred, obtain turpentine fat liquor；

S3, by resin, surfactant, turpentine fat liquor mixing is transferred in reactor after shear agitation, is cooled to room temperature to obtain The warm-mixing agent；

Step 3, under the conditions of 50 DEG C~60 DEG C, the warm-mixing agent is added in Xiang Suoshu regenerative agent, stirs evenly, obtains warm mix again Raw additive used for asphalt mixture.

4. preparation method as claimed in claim 3, which is characterized in that mixing speed is 600~800r/ in the step 1 Min, mixing time are 10~15min.

5. preparation method as claimed in claim 3, which is characterized in that anti-when the tall oil instillation concentrated sulfuric acid in the step 2 Answering temperature is 35~45 DEG C, and mixing speed when instilling the concentrated sulfuric acid is 300~500r/min, and titration time is 0.5~1h；It is described 25~30 DEG C of reaction temperature when Titration of Alkali, 200~400r/min of mixing speed when Titration of Alkali；Alkali used in the titration is ammonia One of water, sodium hydroxide and triethanolamine；The temperature when shear agitation is 80~100 DEG C, and shear agitation rate is 800~1000r/min, shear agitation time are 0.5~1h.

6. preparation method as claimed in claim 3, which is characterized in that mixing speed is 3000~3500r/ in the step 3 Min, mixing time are 10~30min.

7. a kind of warm mix asphalt pavement regeneration mixture, which is characterized in that according to parts by weight, including the following raw material: waste and old drip 40~50 parts of green paving mix, gather materials 20~25 parts, 0.7~0.9 part of 1~3 part of new matrix pitch and pitch warm mix regenerative agent.

8. a kind of preparation method of warm mix asphalt pavement regeneration mixture as claimed in claim 7, which is characterized in that the method Include the following steps: under the conditions of 110~120 DEG C, by waste asphalt pavement mixture 40~50, gather materials 20~25 parts, new base 1~3 part and 0.7~0.9 part of the pitch warm mix regenerative agent mixing of matter pitch, and stir evenly, it is mixed to obtain warm mix reclaimed bituminous pavement Close material.

Technical field

The present invention relates to technical field of road engineering materials more particularly to a kind of warm-mixed recycled asphalt mixture additives And preparation method thereof.

Background technique

As Global Environmental Problems became increasingly conspicuous in recent years, protection environment, it is energy saving have become all trades and professions development Basic point.In highway construction, the laying of bituminous pavement needs to consume mass energy, release due to requiring heat to specific temperature Either all there is significant threat to environment or operating personnel in polluted gas.It can be delayed well using Warm-Mix Bitumen Mixture Railway Project caused by solution hot-mix asphalt mixture is mixed and stirred due to high temperature: (1) the noxious gas emission problem under high temperature.According to state Outer examining report, asphalt is mixed from heat to be switched to warm mix and can make carbon dioxide CO₂Discharge reduces about 1/2, carbon monoxide CO Discharge reduces about 2/3, sulfur dioxide SO₂Discharge reduces 40%, nitrogen oxide NO_XClass reduces nearly 60%, the mixing of material warm-mixed asphalt The environmental benefit of material technology is obviously；(2) energy consumption problem, it was reported that fuel oil can be reduced using Warm-Mix Bitumen Mixture and disappeared 30% or more consumption；(3) ageing of asphalt problem caused by construction at high temperature.Hot-mix asphalt mixture mix and stir and paving material is suitable High, the aging of pitch is difficult to avoid that；And warm-mixing agent is a kind of novel material, can make the mixing and stirring of asphalt, Rolling temperature accordingly reduces by 30 DEG C to 40 DEG C or more than similar hot-mix asphalt mixture, has a good application prospect.

On the other hand, highway mileage open to traffic in China's is more than 120,000 kilometers, and the overwhelming majority uses bituminous pavement.At present There is the bituminous pavement of tens of thousands of highways to carry out medium-capital overhauling curing period, is overlayed again after needing milling.To protect environment, by discarded pitch Mixture regeneration has obtained relatively broad application.However, conventional regeneration techniques needs need to carry out to discarded asphalt Heat treatment, this had both wasted the energy and has increased discharge, while limiting the use ratio of old material.Therefore, a kind of temperature in recent years Regenerated scheme is mixed to be suggested to solve this as topic.

Current asphalt mixture warm-mixing agent mainly has crystallite wax class, zeolites and surfactant-based.However current Asphalt mixture warm-mixing agent does not have regeneration function, and asphalt mixture warm-mixing agent how to be made to be provided simultaneously with warm mix function and pitch Regeneration function becomes technical problem urgently to be resolved.

Summary of the invention

It is an object of the invention to overcome the defect of the prior art, a kind of warm-mixed recycled asphalt mixture addition is provided Agent is provided simultaneously with the function of warm mix and modification regeneration.

The present invention is implemented as follows:

It is an object of the present invention to provide a kind of warm-mixed recycled asphalt mixture additives, according to parts by weight, packet Include the following raw material: 7~9 parts of warm-mixing agent, 2~4 parts of regenerative agent；

The warm-mixing agent includes the following raw material according to parts by weight: 100 parts of resin, 5~10 parts of surfactant, and turpentine oil 30~50 parts of lotion；The raw material of the surfactant includes tall oil, the concentrated sulfuric acid that molar ratio is 10:4~6；The turpentine The raw material of fat liquor includes 10 parts of turpentine oil, 1~2 part of acetic acid according to parts by weight；

The regenerative agent includes the following raw material according to parts by weight: 1~3 part of minashi sugar alcohol, 4~6 parts of aluminum stearate, alditol 7~9 parts of extraction oil.

Preferably, the content of fatty acid > 38% of the tall oil, iodine number < 120；The concentrated sulfuric acid concentration > 98%；Institute It states terebinthine firpene content and is greater than 80%, acid esters≤1.0mg/g；The mass content of acetic acid is 30~35% in the acetic acid； The resin is one of rosin resin, C9 Petropols and terpene resin.

The second object of the present invention is to provide the preparation side of warm-mixed recycled asphalt mixture additive described in one kind Method, described method includes following steps:

Step 1 prepares regenerative agent: under the conditions of 50 DEG C~60 DEG C, minashi sugar alcohol, stearic acid is added into alditol extraction oil Aluminium stirs and evenly mixs, and obtains regenerative agent；

Step 2 prepares warm-mixing agent:

S1, tall oil is packed into reactor, instills the concentrated sulfuric acid while stirring, obtains intermediate product；By the centre Product Titration of Alkali while stirring, until pH value of solution between 8.5~9.5, stops titration, obtains surfactant；

S2, turpentine oil and acetic acid are stirred, obtain turpentine fat liquor；

S3, by resin, surfactant, turpentine fat liquor mixing is transferred in reactor after shear agitation, is cooled to room temperature Obtain the warm-mixing agent；

Step 3, under the conditions of 50 DEG C~60 DEG C, the warm-mixing agent is added in Xiang Suoshu regenerative agent, stirs evenly, obtains temperature Mix reclaimed asphalt mixture additive.

Preferably, mixing speed is 600~800r/min in the step 1, and mixing time is 10~15min.

Preferably, reaction temperature when tall oil instills the concentrated sulfuric acid in the step 2 is 35~45 DEG C, when instilling the concentrated sulfuric acid Mixing speed be 300~500r/min, titration time be 0.5~1h；25~30 DEG C of reaction temperature when the Titration of Alkali, drop Determine 200~400r/min of mixing speed when alkali；Alkali used in the titration is one in ammonium hydroxide, sodium hydroxide and triethanolamine Kind；The temperature when shear agitation is 80~100 DEG C, and shear agitation rate is 800~1000r/min, shear agitation time For 0.5~1h.

Preferably, mixing speed is 3000~3500r/min in the step 3, and mixing time is 10~30min.

The third object of the present invention is to provide a kind of warm mix asphalt pavement regeneration mixture, according to parts by weight, including The following raw material: waste asphalt pavement mixture 40~50, gather materials 20~25 parts, 1~3 part of new matrix pitch and pitch warm mix regeneration 0.7~0.9 part of agent.Aged asphalt in the waste asphalt pavement mixture is (40~50) × n% parts, and the n is 3~5.

The fourth object of the present invention is to provide the preparation method of the warm mix asphalt pavement regeneration mixture, the side Method includes the following steps: under the conditions of 110~120 DEG C, by waste asphalt pavement mixture 40~50, gather materials 20~25 parts, it is new 1~3 part and 0.7~0.9 part of pitch warm mix regenerative agent mixing of matrix pitch, and stir evenly, obtain warm mix reclaimed bituminous pavement Mixture.

Compared with prior art, the invention has the advantages that and effect:

A kind of warm-mixed recycled asphalt mixture additive provided by the invention, is provided simultaneously with the function of warm mix and modification regeneration Energy.Have the function of supplementing pitch light components while reduction construction temperature cold the adding, it can be achieved that RAP (recycling old asphalt) Adduction makes aged asphalt restorability.

Specific embodiment