WO2013060110A1

WO2013060110A1 - Warm-mixed rutting resistant asphalt mixture and preparation method thereof

Info

Publication number: WO2013060110A1
Application number: PCT/CN2012/071903
Authority: WO
Inventors: 宋科; 赵欣平; 何唯平
Original assignee: 深圳海川工程科技有限公司; 河源海川科技有限公司; 深圳海川新材料科技有限公司; 深圳市海川实业股份有限公司
Priority date: 2011-10-27
Filing date: 2012-03-05
Publication date: 2013-05-02
Also published as: CN103086633A

Abstract

Provided are a warm-mixed rutting resistant asphalt mixture and preparation method thereof, the warm-mixed rutting resistant asphalt mixture comprising a warm-mixed asphalt additive and a rutting resistant asphalt modifier; the warm-mixed asphalt additive is 2.5%-5% by weight of the asphalt mixture; and the rutting resistant asphalt modifier is 1%-6% by weight of the asphalt mixture. The asphalt mixture of the present invention has obvious warm-mixing effect, reduces the mixing temperature by 30℃ or more, reduces the paving temperature, dramatically improves the rutting resistance and the cracking resistance of the asphalt mixture under low temperatures, and is cost-effective.

Description

一种温拌抗车辙的沥青混合料及其制备方法技术领域 Asphalt mixture for warm mixing and anti-rutting and preparation method thereof

本发明涉及一种温拌抗车辙的沥青混合料及其制备方法。背景技术 The invention relates to an asphalt mixture which is warm mixed with anti-rutting and a preparation method thereof. Background technique

公路沥青路面早期破损问题，已成为影响我国公路健康发展的突出矛盾。不足之处主要表现在三个方面：一是损坏时间早。有的建成使用后 The early damage of highway asphalt pavement has become a prominent contradiction affecting the healthy development of China's highways. The shortcomings are mainly manifested in three aspects: First, the damage time is early. Some are built and used

1一 2年，就出现严重的损坏现象，个别路段通车当年就出现大面积损坏，远远达不到设计寿命。二是损坏范围宽。全国各地都不同程度地存在着路面过早损坏问题。三是损坏程度重。有的损坏不是局限在沥青表面层，而是基层也发生损坏，不得不进行路面重建。其主要原因由于中面层失稳 ί成移动、推移所。可见，我国公路>历青的早期损坏已令交通最高主管部门大伤脑筋，在沥青路面的早期损坏中尤其以高温车辙破坏最为突出，不仅南方，而且北方也出现了严重的车辙。这主要归结于四方面的原因： In the past 12 years, serious damage occurred. Large-scale damage occurred in the opening of individual road sections in the past year, which was far from the design life. Second, the damage range is wide. There are varying degrees of premature road damage problems across the country. Third, the damage is heavy. Some damage is not limited to the surface layer of asphalt, but the base layer is also damaged, and road reconstruction has to be carried out. The main reason is that the middle layer is unstable and moves into and out. It can be seen that the early damage of highways in China has caused the highest traffic authorities to be particularly troublesome. In the early damage of asphalt pavement, especially the damage caused by high temperature ruts is most prominent, not only in the south, but also in the north. This is mainly due to four reasons:

1 ) 罕见的历史高温。如 01 年我国北方遇到 50年罕见历史高温； 02 年南方遇到 100年罕见历史高温。全球气候变暖的趋势可能导致以后历史罕见的高温接踵而至。 1) Rare historical heat. For example, in 2001, the northern part of China encountered 50 years of rare historical high temperature; in 2002, the south encountered a rare historical high temperature of 100 years. The trend of global warming may lead to the rare high temperatures in the future.

2 )超载重载的交通状况愈演愈烈。现在实行的计重收费实际表明了交通部门对超载重载交通状况的无奈和默许。 2) Traffic conditions of overloaded and heavy loads are intensifying. The weighting charges currently implemented actually indicate the helplessness and acquiescence of the traffic department on the overloaded heavy traffic conditions.

3 ) 高速公路的渠化交通特点和山区高速公路不可避免的长大纵坡特点加剧了车辙。 3) The characteristics of the canalized traffic of the expressway and the inevitable longitudinal slope characteristics of the expressway in the mountainous area have intensified the rutting.

4 ) 《沥青路面设计规范 JTJ 014-97》强调必须有一层悬浮密实的 I型结构防水，导致顾此失彼，车辙加剧。 4) “Asphalt Pavement Design Specification JTJ 014-97” emphasizes that there must be a layer of suspended dense type I structure waterproof, which leads to the loss of the car and the rutting.

为了解决车辙破坏的问题，沥青混合料可以有三种改进方案： In order to solve the problem of rutting damage, asphalt mixture can be improved in three ways:

一是级配改良。级配改良是一柄双刃剑，抗车辙性能和水损坏不能很好的兼容。 The first is grading improvement. The grading improvement is a double-edged sword, and the rutting resistance and water damage are not well compatible.

二是沥青改性。沥青改性的效果比较好，但存在沥青与改性剂的相容性问题，为了达到更高的抗车辙性能，需要高剂量的改性剂，而高剂量的改性剂难以在沥青中分散均勾，而且在运输途中和储存过程中会出现改性剂与沥青的分层离析，其性能反而不如基质沥青。另外存在成本较高的问题。 The second is asphalt modification. The effect of asphalt modification is better, but there is the compatibility problem between asphalt and modifier. In order to achieve higher rutting resistance, high dose modifier is needed, and high dose modifier is difficult to disperse in asphalt. Both are hooked, and the stratification of the modifier and the asphalt occurs during transportation and storage, and its performance is not as good as that of the matrix asphalt. In addition, there is a higher cost question. question.

三是纤维增强。纤维增强的效果较好，同样要达到更高的抗车辙性能时，需要高掺量的纤维，而高掺量的纤维难以在沥青混合料中分散均匀，分散不均匀的纤维沥青混合料不仅起不到增强作用，反而使结构疏松强度降低。 The third is fiber reinforcement. The fiber reinforced effect is better. When higher rutting resistance is required, a high amount of fiber is required, and the high-volume fiber is difficult to disperse uniformly in the asphalt mixture, and the unevenly dispersed fiber asphalt mixture not only starts from Not to enhance the effect, but to reduce the structural bulk strength.

另外在道路工程中应用中沥青混合料常釆用热拌工艺，但在热拌沥青混合料的生产及铺筑过程中釆用的温度^高，不仅消耗了大量能源，而且产生了大量的 co₂、粉尘及有害气体。为达到降低沥青混合料生产过程中的能耗，并且减少气体及粉尘排放量的目的，同时又保证具有与热拌沥青混合料基本相同的路用性能和施工和易性，温拌沥青混合料制备技术应运而生。发明内容 In addition, in the road engineering, the asphalt mixture is often used in the hot mixing process, but the temperature used in the production and paving of the hot mix asphalt mixture is high, which not only consumes a lot of energy, but also produces a large amount of co ₂ , dust and harmful gases. In order to reduce the energy consumption in the asphalt mixture production process and reduce the gas and dust emissions, it also ensures the same road performance and construction workability as the hot mix asphalt mixture. Preparation techniques came into being. Summary of the invention

本发明的目的是提供一种温拌抗车辙的沥青混合料及其制备方法，以解决现有的沥青混合料抗车辙性能差、拌和温度高的技术问题。 The object of the present invention is to provide an asphalt mixture which is warm and anti-rutting and a preparation method thereof, so as to solve the technical problem that the existing asphalt mixture has poor rutting resistance and high mixing temperature.

为实现上述目的，本发明提供一种温拌抗车辙的沥青混合料，所述沥青混合料包括温拌沥青添加剂和抗车辙沥青改性剂，所述温拌沥青添加剂占所述沥青混合料重量的 2.5%。 ~ 5%。，所述抗车辙沥青改性剂占所述沥青混合料重量的 1 %。 ~ 6 %o。 In order to achieve the above object, the present invention provides a warm mix anti-rutting asphalt mixture, the asphalt mixture comprises a warm mix asphalt additive and an anti-rutting asphalt modifier, and the warm mix asphalt additive accounts for the weight of the asphalt mixture. 2.5%. ~ 5%. The anti-rutting asphalt modifier accounts for 1% by weight of the asphalt mixture. ~ 6 %o.

所述温拌沥青添加剂由石英砂、氢氧化钠、铝酸钠、水和氢氧化钙制备而成，所述石英^ K 氢氧化钠、铝酸钠、水和氢氧化钙的重量配比依次为 0.65 ~ 0.85: 0.95 ~ 1.5: 1: 9.5 ~ 22: 0.24 ~ 0.75。 The warm asphalt additive is prepared by using quartz sand, sodium hydroxide, sodium aluminate, water and calcium hydroxide, and the weight ratio of the quartz potassium hydroxide, sodium aluminate, water and calcium hydroxide is in turn It is 0.65 ~ 0.85: 0.95 ~ 1.5: 1: 9.5 ~ 22: 0.24 ~ 0.75.

所述温拌沥青添加剂的制备方法包括以下步骤： The preparation method of the warm mix asphalt additive comprises the following steps:

( 1 ) 第一次水热处理：将石英砂、氢氧化钠和水按照重量比 1:0.5 ~ 1.5: 3~5进行混合，将混合后产物加入反应釜中在 200 ~ 300转 /分钟搅拌条件下加热至 160~230°C, 继续搅拌 3~5 小时后停止加热，待反应釜冷却后停止搅拌； (1) First hydrothermal treatment: Mix quartz sand, sodium hydroxide and water in a weight ratio of 1:0.5 ~ 1.5: 3~5, and add the mixed product to the reactor at 200 ~ 300 rpm for stirring conditions. Heat down to 160~230 °C, continue to stir for 3~5 hours, stop heating, stop stirring after the reactor is cooled;

(2) 第二次水热处理：将步骤（ 1 ) 得到的溶液与铝酸钠、氢氧化钠、水混合均匀，得到的混合料中 Si0₂、 A1₂0₃、 Na₂0和 ¾0的摩尔比为 1.8-2.2: 1: 3~4： 90 -200, 将所述混合料加入反应釜中，在 60 ~ 80转 / 分钟搅拌条件下升温至 90 ~ 100 °C , 晶化 3 ~ 5小时； (2) Second hydrothermal treatment: The solution obtained in the step (1) is uniformly mixed with sodium aluminate, sodium hydroxide and water to obtain a molar ratio of Si0 ₂ , A1 ₂ 0 ₃ , Na ₂ 0 and 3⁄40 in the mixture. The ratio is 1.8-2.2: 1: 3~4: 90 -200, the mixture is added to the reaction vessel, heated to 90 ~ 100 °C under stirring conditions of 60 ~ 80 rpm, crystallization for 3 ~ 5 hours ;

(3) 洗涤和干燥：将步骤（2)得到的产物用水洗涤至 PH小于 11, 然后在 60 ~ 80°C条件下鼓风干燥，得到干燥的产物； (3) washing and drying: the product obtained in the step (2) is washed with water to a pH of less than 11, and then dried at 60 to 80 ° C to obtain a dried product;

(4) 复配：将步骤（3 )得到的产物研磨后与氢氧化钙按照重量比 3~9： 1混合均匀，即得到温拌沥青添加剂。 (4) compounding: the product obtained in step (3) is ground to calcium hydroxide by weight ratio 3~9: 1 Mix well, that is, get warm mix asphalt additive.

所述抗车辙沥青改性剂由以下组份及重量份制成：聚烯烃 10 ~20 份，橡胶粉 1 ~80份，抗氧剂 0.5-1份，聚烯烃为 PE、 PP、 EVA, APP、 APAO、 POE、 HDPE、 LDPE 及 LLDPE 之一或其组合，橡胶粉细度为 20 ~ 100目。 The anti-rutting asphalt modifier is made of the following components and parts by weight: 10-20 parts of polyolefin, 1 ~ 80 parts of rubber powder, 0.5-1 parts of antioxidant, PE is PE, PP, EVA, APP One or a combination of APAO, POE, HDPE, LDPE and LLDPE, rubber powder fineness of 20 ~ 100 mesh.

所述橡胶粉为天然橡胶、丁苯、丁腈、氯丁、顺丁、异戊和 /或三元乙丙橡胶粉。 The rubber powder is natural rubber, butylbenzene, butyronitrile, chloroprene, cis-butane, isoprene and/or ethylene propylene diene rubber powder.

所述橡胶粉为天然橡胶、丁苯、丁腈、氯丁、顺丁、异戊和 /或三元乙丙橡胶的再生橡胶粉，所述再生橡胶粉为含硫或脱硫的橡胶粉。 The rubber powder is a recycled rubber powder of natural rubber, butylbenzene, butyronitrile, chloroprene, cis-butane, isoprene and/or ethylene propylene diene rubber, and the recycled rubber powder is a sulfur-containing or desulfurized rubber powder.

所述抗氧剂为酚类或亚磷酸酯类抗氧剂的一种或两种的混合物。 The antioxidant is one or a mixture of two phenolic or phosphite antioxidants.

所述抗车辙沥青改性剂的制备方法包括以下步骤： The preparation method of the anti-rutting asphalt modifier comprises the following steps:

( 1 )在转速为 15~25 转 /分钟条件下，将聚烯烃、橡胶粉和抗氧剂混合均匀； (1) Mixing polyolefin, rubber powder and antioxidant at a speed of 15~25 rpm;

(2)将步骤（1 )得到的混合物在 8~ 12 分钟内升温至 80°C, 再在 15~20分钟内升温至150°( , 最后在 3~7分钟内升温至 200°C; (2) The mixture obtained in the step (1) is heated to 80 ° C in 8 to 12 minutes, and then heated to 150 ° in 15 to 20 minutes (and finally heated to 200 ° C in 3 to 7 minutes;

(3 )通过加热熔融釜、开炼机、单螺杆挤出机、双螺杆挤出机或亨舍尔混合机混合成型，造粒或切片成型，制得沥青改性剂成品。 (3) A finished product of asphalt modifier is obtained by mixing, granulating or slicing a heated melt vessel, an open mill, a single-screw extruder, a twin-screw extruder or a Henschel mixer.

本发明还提供一种温拌抗车辙的沥青混合料的制备方法，步骤在于： ( 1 )在拌合楼设备中，加热温度至 160 ~ 230 °C时加入集料； The invention also provides a preparation method of the asphalt mixture for warm mixing and anti-rutting, the steps are as follows: (1) in the mixing plant equipment, adding the aggregate when the heating temperature is 160 ~ 230 °C;

(2)加入温拌沥青添加剂和抗车辙沥青改性剂，在 110~ 170°C下干拌 80 ~ 90秒； (2) adding warm mix asphalt additive and anti-rutting asphalt modifier, and drying at 110~170 ° C for 80 ~ 90 seconds;

(3)调节温度至 140 ~ 170 °C时加入沥青，在 110~ 170°C下湿拌 80~ (3) Add asphalt when adjusting the temperature to 140 ~ 170 °C, wet mix at 110~170 °C 80~

90秒； 90 seconds;

(4) 沥青混合料的成型温度为 130~160°C。 (4) The molding temperature of the asphalt mixture is 130~160 °C.

本发明还提供另一种温拌抗车辙的沥青混合料的制备方法，步骤在于： The invention also provides a preparation method of another asphalt mixture which is warm and anti-rutting, and the steps are as follows:

( 1 )在拌合楼设备中，加热温度至 160 ~ 230 °C时加入集料； (1) In the mixing plant equipment, the aggregate is added when the heating temperature is 160 ~ 230 °C;

( 2 )加入抗车辙沥青改性剂，在 110 ~ 170°C下干拌 80 ~ 90秒； (2) adding anti-rutting asphalt modifier, dry mixing at 110 ~ 170 ° C for 80 ~ 90 seconds;

( 3 ) 调节温度至 140 ~ 170 °C时加入沥青和温拌沥青添加剂，在 110~170 °C下湿拌 80 ~ 90秒； (3) Adding asphalt and warm mix asphalt additive when adjusting the temperature to 140 ~ 170 °C, wet mixing at 110~170 °C for 80 ~ 90 seconds;

相对于现有技术，本发明的有益效果是：本发明的沥青混合料中加入抗车辙沥青改性剂后具有如下的作用机理： Compared with the prior art, the beneficial effects of the invention are as follows: The asphalt mixture of the invention has the following mechanism of action after adding the anti-rutting asphalt modifier:

一是集料增粘作用。抗车辙沥青改性剂拌和时首先与集料干拌，部分熔融于集料表面，提高了集料的粘结性，相当于对集料进行了预改性；二是沥青改性作用。抗车辙沥青改性剂在湿拌和运输过程中，部分溶解或溶胀于沥青中，形成胶结作用，从而达到提高软化点温度、增加粘度、降低热敏性等沥青改性的作用； First, the aggregate thickening effect. The anti-rutting asphalt modifier is first mixed with the aggregate when mixing, part Melting on the surface of the aggregate improves the adhesion of the aggregate, which is equivalent to the pre-modification of the aggregate; the second is the modification of the asphalt. During the wet mixing and transportation process, the anti-rutting asphalt modifier partially dissolves or swells in the asphalt to form a cementation effect, thereby achieving the effects of improving the softening point temperature, increasing the viscosity, and reducing the heat sensitivity.

三是纤维加筋作用。聚烯烃形成的微结晶区具有相当的劲度，在拌和过程中部分拉丝成塑料纤维，在集料骨架内搭桥交联而形成纤维加筋作用； The third is fiber reinforcement. The microcrystalline region formed by the polyolefin has considerable stiffness, and is partially drawn into plastic fibers during the mixing process, and bridged and crosslinked in the aggregate skeleton to form a fiber reinforced effect;

四是细集料骨架作用。抗车辙沥青改性剂在施工中临时软化，然后这些颗粒在碾压过程中热成型，相当于具有高粘附性的单一粒径细集料填充了集料骨架中的空隙，增加了沥青混合料结构的骨架作用，同时降低了成型路面的渗透性； The fourth is the role of fine aggregate skeleton. The anti-rutting asphalt modifier temporarily softens during construction, and then these pellets are thermoformed during the rolling process, which is equivalent to a single-size fine aggregate with high adhesion filling the voids in the aggregate skeleton, increasing the asphalt mixing. The skeleton function of the material structure, while reducing the permeability of the formed pavement;

五是变形恢复作用。抗车辙沥青改性剂中的弹性成分在较高温度时具有使路面的变形部分弹性恢复的功能，因而降低了成型沥青路面的永久变形。 The fifth is the recovery of deformation. The elastic component of the anti-rutting asphalt modifier has a function of elastically recovering the deformed portion of the road surface at a higher temperature, thereby reducing the permanent deformation of the formed asphalt pavement.

而沥青混合料中加入温拌沥青添加剂具有许多优点：（ 1 ) 节约能源，当混合料的拌合温度降低 30°C时，每吨沥青混合料可节约燃油 2.4 Kg; ( 2 )减少排放，当混合料的拌合温度降低 30°C时，可减少 30%以上的 C0₂排放量和 40%以上的粉尘排放量；（ 3 )保护施工人员健康；（ 4 ) 减少生产过程中沥青的老化，增加沥青路面的使用寿命；（5 )较早的路面开放时间，减少了施工给交通带来的压力和影响；（6 ) 降低施工对环境温度的要求，延长施工季节。具体实施方式 The addition of warm mix asphalt additive to asphalt mixture has many advantages: (1) Energy saving, when the mixing temperature of the mixture is lowered by 30 ° C, the fuel mixture can save 2.4 Kg per ton of asphalt mixture; (2) reduce emissions, When the mixing temperature of the mixture is lowered by 30 °C, it can reduce more than 30% of CO ₂ emissions and more than 40% of dust emissions; (3) protect the health of construction workers; (4) reduce the aging of asphalt during production Increase the service life of asphalt pavement; (5) Reduce the pressure and impact of construction on the road surface; (6) Reduce the construction temperature requirements and extend the construction season. detailed description

下面结合实施例对本发明的技术方案进行详细的阐述。 The technical solution of the present invention will be described in detail below with reference to the embodiments.

本发明提供一种温拌抗车辙的沥青混合料，所述沥青混合料包括温拌沥青添加剂和抗车辙沥青改性剂，所述温拌沥青添加剂占所述沥青混合料重量的 2.5 %。 ~ 5 %。，所述抗车辙沥青改性剂占所述沥青混合料重量的 1 本发明温拌抗车辙的沥青混合料的制备方法，步骤在于： The present invention provides a warm mix anti-rutting asphalt mixture comprising a warm mix asphalt additive and an anti-rutting asphalt modifier, the warm mix asphalt additive comprising 2.5 % by weight of the asphalt mix. ~ 5 %. The anti-rutting asphalt modifier accounts for the weight of the asphalt mixture. The preparation method of the asphalt mixture of the warm mixed anti-rutting of the invention is as follows:

( 2 )加入温拌沥青添加剂和抗车辙沥青改性剂，在 110 ~ 170 °C下干拌 80 ~ 90秒； (2) adding warm mix asphalt additive and anti-rutting asphalt modifier, and drying at 110 ~ 170 °C for 80 ~ 90 seconds;

( 3 )调节温度至 140 ~ 170 °C时加入沥青，在 110 ~ 170 °C下湿拌 80 ~ (3) Add asphalt when adjusting the temperature to 140 ~ 170 °C, and mix 80 ~ 110 ~ 110 °C

90秒； (4) 沥青混合料的成型温度为 130~160°C。 90 seconds; (4) The molding temperature of the asphalt mixture is 130~160 °C.

本发明温拌抗车辙的沥青混合料的另一种制备方法，步骤在于： ( 1 )在拌合楼设备中，加热温度至 160 ~ 230 °C时加入集料； Another preparation method of the asphalt mixture for warm mixing and anti-rutting of the invention comprises the following steps: (1) adding material in the mixing plant to a heating temperature of 160 to 230 ° C;

( 2 )加入抗车辙沥青改性剂，在 110 ~ 170°C下干拌 80 ~ 90秒； ( 3 ) 调节温度至 140 ~ 170 °C时加入沥青和温拌沥青添加剂，在 (2) adding anti-rutting asphalt modifier, dry mixing at 110 ~ 170 °C for 80 ~ 90 seconds; (3) adding asphalt and warm asphalt additive when adjusting the temperature to 140 ~ 170 °C,

110 ~ 170 °C下湿拌 80 ~ 90秒； Wet mixing at 80 ~ 170 °C for 80 ~ 90 seconds;

本发明沥青混合料中的温拌沥青添加剂和抗车辙沥青改性剂都是自制的，温拌沥青添加剂可以在沥青之前或之后加入，或者与沥青同时加入，都能达到温拌效果明显，降低拌和温度 30°C以上。 The warm mix asphalt additive and the anti-rutting asphalt modifier in the asphalt mixture of the invention are all self-made, and the warm mix asphalt additive can be added before or after the asphalt, or can be added simultaneously with the asphalt, and the warm mixing effect can be obviously reduced and reduced. Mixing temperature is above 30 °C.

沥青混合料制备方法的实施例如下：（实施例中沥青与集料的比例 (简称油石比）釆用 AC-13级配的 5% ) The implementation of the asphalt mixture preparation method is as follows: (The ratio of asphalt to aggregate in the example (referred to as the ratio of oil to stone) 5% of the AC-13 grade)

实施例 1 Example 1

( 1 )在拌合楼设备中，加热温度至 160 °C时加入集料 206400g; (1) In the mixing plant equipment, when the heating temperature is 160 °C, the aggregate is added to 206400g;

(2)加入温拌沥青添加剂 764g和抗车辙沥青改性剂 655g, 在 110°C 下干拌 80s; (2) Adding 764g of warm mix asphalt additive and 655g of anti-rutting asphalt modifier, dry mixing at 110 ° C for 80s;

( 3 )调节温度至 140 °C时加入沥青 10320g, 在 110°C下湿拌 80秒； (4) 沥青混合料的成型温度为 145 °C。 (3) Add 10320g of asphalt to the temperature to 140 °C, and wet mix at 110 °C for 80 seconds; (4) The molding temperature of the asphalt mixture is 145 °C.

实施例 2 Example 2

( 1 )在拌合楼设备中，加热温度至 200 °C时加入集料 318230g; (1) In the mixing plant equipment, when the heating temperature is up to 200 °C, the aggregate is added to 318230g;

( 2 )加入抗车辙沥青改性剂 1010g, 在 140 °C下干拌 90秒； (2) Add 1010g of anti-rutting asphalt modifier and dry mix at 140 °C for 90 seconds;

( 3 ) 调节温度至 160 °C时加入沥青 15910g 和温拌沥青添加剂 1180g, 在 140 °C下湿拌 90秒； (3) Add 15910g of asphalt and 1180g of warm mix asphalt additive when adjusting the temperature to 160 °C, and wet mix at 140 °C for 90 seconds;

(4) 沥青混合料的成型温度为 150 °C。 (4) The molding temperature of the asphalt mixture is 150 °C.

实施例 3 Example 3

( 1 )在拌合楼设备中，加热温度至 230 °C时加入集料 286380g; (1) In the mixing plant equipment, when the heating temperature is 230 °C, the aggregate is added to 286380g;

( 2 )加入抗车辙沥青改性剂 910g, 在 170°C下干拌 90秒； (2) adding 910g of anti-rutting asphalt modifier, dry mixing at 170 ° C for 90 seconds;

( 3 ) 170 °C时加入沥青 15030g, 在 170 °C下湿拌 90秒； (3) 15030g of asphalt is added at 170 °C, and wet-mixed at 170 °C for 90 seconds;

( 4 )加入温拌沥青添加剂 1060g, 在 170°C下搅拌 90秒； (4) adding 1060 g of warm mix asphalt additive, stirring at 170 ° C for 90 seconds;

(5) 沥青混合料的成型温度为 160°C。 (5) The molding temperature of the asphalt mixture is 160 °C.

本发明沥青混合料的路面施工工艺如下： The pavement construction process of the asphalt mixture of the present invention is as follows:

• 被 4难铺路面的表面温度： >6°C; • Surface temperature of 4 difficult paved roads: >6 ° C;

• 室外温度： >6°C; • Outdoor temperature: >6°C;

• 避免在大风天气施工； • 混合料运至现场温度： 150 °C; • Avoid construction in windy weather; • Mixing material delivered to the site temperature: 150 °C;

• 摊铺温度： 130-160°C; • paving temperature: 130-160 ° C;

• 初始碾压温度： 130-160 °C, 紧跟碾压； • Initial rolling temperature: 130-160 °C, followed by rolling;

• 碾压终了温度： 110-125°C, 必须紧凑安排压实，在降至此温度之前完成压实； • The final temperature of the crushing: 110-125 ° C, compaction must be arranged compactly, and compaction is completed before dropping to this temperature;

• 开放交通温度： 90-100 °C; 在路口或有重载车时，温度更低些。温拌沥青改性剂是一种合成直链脂肪族碳氢混合物，其熔点为 100 °C, 温度超过 115°C时完全溶解于沥青结合料中，在沥青结合料中形成栅格结构，这使温拌改性剂很好地稳定在沥青结合料里，而不产生离析。温拌改性剂可以明显降低沥青的高温粘度，且可增加沥青的低温 (60°C) 粘度，因此在沥青中掺加温拌改性剂后不仅可以降低施工的拌和与压实温度，还可以增加沥青混合料的高温稳定性。本发明的沥青混合料釆用自制的温拌沥青改性剂，能降低拌和温度 30 °C以上，并能显著降低摊铺温度。本发明沥青混合料中加入温拌沥青添加剂具有许多优点：（ 1 ) 节约能源，当混合料的拌合温度降低 30°C时，每吨沥青混合料可节约燃油 2.4 Kg; (2)减少排放，当混合料的拌合温度降低 30°C时，可减少 30%以上的 C0₂排放量和 40%以上的粉尘排放量；（ 3 )保护施工人员健康；（ 4 ) 减少生产过程中沥青的老化，增加沥青路面的使用寿命；（5)较早的路面开放时间，减少了施工给交通带来的压力和影响；（6) 降低施工对环境温度的要求，延长施工季节。 • Open traffic temperature: 90-100 °C; lower temperature at intersections or heavy-duty vehicles. The warm mix asphalt modifier is a synthetic linear aliphatic hydrocarbon mixture having a melting point of 100 ° C. When the temperature exceeds 115 ° C, it is completely dissolved in the asphalt binder, forming a grid structure in the asphalt binder. The warm mix modifier is well stabilized in the asphalt binder without segregation. The warm mix modifier can significantly reduce the high temperature viscosity of the bitumen and increase the low temperature (60 ° C) viscosity of the bitumen. Therefore, the addition of the warm mix modifier in the bitumen can not only reduce the mixing and compaction temperature of the construction, but also It can increase the high temperature stability of the asphalt mixture. The asphalt mixture of the invention uses a self-made warm mixed asphalt modifier to reduce the mixing temperature above 30 °C and significantly reduce the paving temperature. The addition of warm mix asphalt additive to the asphalt mixture of the invention has many advantages: (1) saving energy, when the mixing temperature of the mixture is lowered by 30 ° C, the fuel mixture can save 2.4 Kg per ton of asphalt mixture; (2) reducing emissions When the mixing temperature of the mixture is lowered by 30 °C, it can reduce more than 30% of CO ₂ emissions and more than 40% of dust emissions; (3) protect the health of construction workers; (4) reduce the asphalt in the production process Aging, increase the service life of asphalt pavement; (5) The earlier pavement opening time reduces the pressure and impact brought by construction to the traffic; (6) Reduce the construction environment temperature requirements and extend the construction season.

自制的温拌沥青添加剂由石英砂、氢氧化钠、铝酸钠、水和氢氧化钙制备而成，所述石英砂、氢氧化钠、铝酸钠、水和氢氧化钙的重量配比依次为 0.65 ~ 0.85: 0.95 ~ 1.5: 1: 9.5 ~ 22: 0.24 ~ 0.75。 The self-made warm asphalt additive is prepared from quartz sand, sodium hydroxide, sodium aluminate, water and calcium hydroxide, and the weight ratio of the quartz sand, sodium hydroxide, sodium aluminate, water and calcium hydroxide is in turn It is 0.65 ~ 0.85: 0.95 ~ 1.5: 1: 9.5 ~ 22: 0.24 ~ 0.75.

自制的温拌沥青添加剂的制备方法包括以下步骤： The preparation method of the homemade warm asphalt additive includes the following steps:

( 1 ) 第一次水热处理：将石英砂、氢氧化钠和水按照重量比 1:0.5 ~ (1) The first hydrothermal treatment: the weight ratio of quartz sand, sodium hydroxide and water is 1:0.5 ~

1.5: 3~5进行混合，将混合后产物加入反应釜中在 200-300转 /分钟搅拌条件下加热至 160~230°C, 继续搅拌 3~5 小时后停止加热，待反应釜冷却后停止搅拌； 1.5: 3~5 mixing, adding the mixed product to the reaction kettle and heating to 160~230 °C under stirring conditions of 200-300 rpm, stirring is continued for 3~5 hours, then the heating is stopped, and the reactor is cooled and stopped. Stir

(2) 第二次水热处理：将步骤（ 1 ) 得到的溶液与铝酸钠、氢氧化钠、水混合均匀，得到的混合料中 Si0₂、 A1₂0₃、 Na₂0和 ¾0的摩尔比为(2) Second hydrothermal treatment: The solution obtained in the step (1) is uniformly mixed with sodium aluminate, sodium hydroxide and water to obtain a molar ratio of Si0 ₂ , A1 ₂ 0 ₃ , Na ₂ 0 and 3⁄40 in the mixture. Ratio

1.8-2.2: 1: 3~4： 90 -200, 将所述混合料加入反应釜中，在 60 ~ 80转 / 分钟搅拌条件下升温至 90 ~ 100 °C , 晶化 3 ~ 5小时； 1.8-2.2: 1: 3~4: 90 -200, the mixture is added to the reaction kettle, heated to 90 ~ 100 °C under stirring conditions of 60 ~ 80 rpm, crystallization for 3 ~ 5 hours;

(3) 洗涤和干燥：将步骤（2)得到的产物用水洗涤至 PH小于 11, 然后在 60 ~ 80°C条件下鼓风干燥，得到干燥的产物； ( 4 ) 复配：将步骤（3 )得到的产物研磨后与氢氧化钙按照重量比 3 ~ 9： 1混合均匀，即得到温拌沥青添加剂。 (3) washing and drying: the product obtained in the step (2) is washed with water to a pH of less than 11, and then blasted at 60 to 80 ° C to obtain a dried product; (4) Compounding: The product obtained in the step (3) is ground and then mixed with calcium hydroxide in a weight ratio of 3 to 9:1 to obtain a warm mixed asphalt additive.

自制的温拌沥青添加剂的 5个实施例如下： The five implementations of the homemade warm asphalt additive are as follows:

实施例 4 Example 4

石英砂原料来自广东省河源市， Si0₂含量大于 99% , 粒径小于 100 。 Quartz sand raw material is from Heyuan City, Guangdong Province, with Si0 ₂ content greater than 99% and particle size less than 100.

将 420 g氢氧化钠溶于 1500 ml水中，移入 2L反应釜，然后加入 420 g 石英砂，启动搅拌使转速为 300转 /分钟，升温至 200°C , 继续搅拌 3小时后，停止加热，通冷却水使釜内温度降至室温后停止搅拌。将 574g偏铝酸钠和 186.2g氢氧化钠溶入 6060ml水中，待完全溶解后将溶解有氧化硅的碱液加入其中，此时，混合料中的物料摩尔比为 2Si0₂： A1₂0₃： 3.165Na₂0: 120H₂O。搅拌 30分钟后移入 10 L反应釜中，启动搅拌至 60 转 /分钟，升温至 100 °C , 晶化 3小时，停止加热，通冷却水使反应釜温度降至室温，停止搅拌后开釜，对釜内物料进行抽滤，洗涤，然后在鼓风烘箱中 60 °C条件下干燥 8 小时得到白色固体产物，将该产物研磨后，加入 400g氢氧化钙，拌和均勾后装入密封瓶中保存。 Dissolve 420 g of sodium hydroxide in 1500 ml of water, transfer to a 2 L reactor, then add 420 g of quartz sand, start stirring to rotate at 300 rpm, heat up to 200 ° C, continue stirring for 3 hours, stop heating, pass The cooling water was stopped after the temperature in the kettle was lowered to room temperature. 574 g of sodium metaaluminate and 186.2 g of sodium hydroxide were dissolved in 6060 ml of water, and after the complete dissolution, the alkali solution in which silicon oxide was dissolved was added thereto, at this time, the molar ratio of the materials in the mixture was 2Si0 ₂ : A1 ₂ 0 ₃ : 3.165Na ₂ 0: 120H ₂ O. After stirring for 30 minutes, the mixture was transferred to a 10 L reaction vessel, stirred to 60 rpm, heated to 100 ° C, crystallized for 3 hours, and the heating was stopped. The temperature of the reaction vessel was lowered to room temperature by cooling water, and the mixture was stopped after stirring. The material in the kettle was suction filtered, washed, and then dried in a forced air oven at 60 ° C for 8 hours to obtain a white solid product. After the product was ground, 400 g of calcium hydroxide was added, and the mixture was combined and placed in a sealed bottle. save.

实施例 5 Example 5

将 420 g氢氧化钠溶于 1500 ml水中，移入 2L反应釜，然后加入 420 g 石英砂，启动搅拌使转速为 300转 /分钟，升温至 180°C , 继续搅拌 5小时后，停止加热，通冷却水使釜内温度降至室温后停止搅拌。将 574g偏铝酸钠和 186.2g氢氧化钠溶入 6060ml水中，待完全溶解后将溶解有氧化硅的碱液加入其中，此时，混合料中的物料摩尔比为 2Si0₂： A1₂0₃： 3.165Na₂0: 120H₂O。搅拌 30分钟后移入 10 L反应釜中，启动搅拌至 60 转 /分钟，升温至 90 °C , 晶化 5 小时，停止加热，通冷却水使反应釜温度降至室温，停止搅拌后开釜，对釜内物料进行抽滤，洗涤，然后在鼓风烘箱中 70 °C条件下干燥 8 小时得到白色固体产物，将该产物研磨后，加入 133g氢氧化钙，拌和均勾后装入密封瓶中保存。 Dissolve 420 g of sodium hydroxide in 1500 ml of water, transfer to a 2 L reactor, then add 420 g of quartz sand, start stirring to rotate at 300 rpm, heat up to 180 ° C, continue stirring for 5 hours, stop heating, pass The cooling water was stopped after the temperature in the kettle was lowered to room temperature. 574 g of sodium metaaluminate and 186.2 g of sodium hydroxide were dissolved in 6060 ml of water, and after the complete dissolution, the alkali solution in which silicon oxide was dissolved was added thereto, at this time, the molar ratio of the materials in the mixture was 2Si0 ₂ : A1 ₂ 0 ₃ : 3.165Na ₂ 0: 120H ₂ O. After stirring for 30 minutes, transfer to a 10 L reactor, start stirring to 60 rpm, heat to 90 ° C, crystallization for 5 hours, stop heating, pass the cooling water to reduce the temperature of the reactor to room temperature, stop stirring, and then open the kettle. The material in the kettle was suction filtered, washed, and then dried in a forced air oven at 70 ° C for 8 hours to obtain a white solid product. After the product was ground, 133 g of calcium hydroxide was added, and the mixture was combined and placed in a sealed bottle. save.

实施例 6 Example 6

将 160 g氢氧化钠溶于 960 ml水中，移入 2L反应釜，然后加入 320 g 石英砂，启动搅拌使转速为 300转 /分钟，升温至 250°C , 继续搅拌 5小时后，停止加热，通冷却水使釜内温度降至室温后停止搅拌。将 485.93g偏铝酸钠和 314g氢氧化钠溶入 3850ml水中，待完全溶解后将溶解有氧化硅的碱液加入其中，此时，混合料中的物料摩尔比为 1.8Si0₂： A1₂0₃： 3Na₂0: 90H₂O。搅拌 30分钟后移入 10 L反应釜中，启动搅拌至 60转 /分钟，升温至 100 °C , 晶化 3 小时，停止加热，通冷却水使反应釜温度降至室温，停止搅拌后开釜，对釜内物料进行抽滤，洗涤，然后在鼓风烘箱中 80°C条件下干燥 6小时得到白色固体产物，将该产物研磨后，加入 300g氢氧化钙，拌和均勾后装入密封瓶中保存。 Dissolve 160 g of sodium hydroxide in 960 ml of water, transfer to a 2 L reactor, then add 320 g of quartz sand, start stirring to rotate at 300 rpm, warm to 250 ° C, and continue stirring for 5 hours. After that, the heating was stopped, and the cooling was stopped by cooling the water to the room temperature. 485.93g of sodium metaaluminate and 314g of sodium hydroxide were dissolved in 3850ml of water, and after being completely dissolved, the alkali solution in which silicon oxide was dissolved was added thereto. At this time, the molar ratio of the materials in the mixture was 1.8Si0 ₂ : A1 ₂ 0 ₃ : 3Na ₂ 0: 90H ₂ O. After stirring for 30 minutes, the mixture was transferred to a 10 L reaction vessel, stirred to 60 rpm, heated to 100 ° C, crystallized for 3 hours, and the heating was stopped. The temperature of the reaction vessel was lowered to room temperature by cooling water, and the mixture was stopped after stirring. The material in the kettle was suction filtered, washed, and then dried in a forced air oven at 80 ° C for 6 hours to obtain a white solid product. After the product was ground, 300 g of calcium hydroxide was added, and the mixture was combined and placed in a sealed bottle. save.

实施例 7 Example 7

将 420 g氢氧化钠溶于 1400 ml水中，移入 2L反应釜，然后加入 280 g 石英砂，启动搅拌使转速为 300转 /分钟，升温至 200°C , 继续搅拌 4小时后，停止加热，通冷却水使釜内温度降至室温后停止搅拌。将 347.9g偏铝酸钠和 89.1g氢氧化钠溶入 6240ml水中，待完全溶解后将溶解有氧化硅的碱液加入其中，此时，混合料中的物料摩尔比为 2.2Si0₂： A1₂0₃： 4Na₂0: 200H₂O。搅拌 30分钟后移入 10 L反应釜中，启动搅拌至 60转 /分钟，升温至 100 °C , 晶化 4 小时，停止加热，通冷却水使反应釜温度降至室温，停止搅拌后开釜，对釜内物料进行抽滤，洗涤，然后在鼓风烘箱中 80°C条件下干燥 10 小时得到白色固体产物，将该产物研磨后，加入 200g 氢氧化钙，拌和均勾后装入密封瓶中保存。 Dissolve 420 g of sodium hydroxide in 1400 ml of water, transfer to a 2 L reaction kettle, then add 280 g of quartz sand, start stirring to rotate at 300 rpm, heat up to 200 ° C, continue stirring for 4 hours, then stop heating. The cooling water was stopped after the temperature in the kettle was lowered to room temperature. 347.9 g of sodium metaaluminate and 89.1 g of sodium hydroxide were dissolved in 6240 ml of water, and after being completely dissolved, an alkali solution in which silicon oxide was dissolved was added thereto, at this time, the molar ratio of the materials in the mixture was 2.2Si0 ₂ : A1 ₂ 0 ₃ : 4Na ₂ 0: 200H ₂ O. After stirring for 30 minutes, transfer to a 10 L reactor, start stirring to 60 rpm, heat to 100 ° C, crystallization for 4 hours, stop heating, pass the cooling water to reduce the temperature of the reactor to room temperature, stop stirring, and then open the kettle. The material in the kettle was suction filtered, washed, and then dried in a forced air oven at 80 ° C for 10 hours to obtain a white solid product. After the product was ground, 200 g of calcium hydroxide was added, and the mixture was homogenized and placed in a sealed bottle. save.

实施例 8 Example 8

将 420 g氢氧化钠溶于 1500 ml水中，移入 2L反应釜，然后加入 420 g 石英砂，启动搅拌使转速为 300转 /分钟，升温至 200°C , 继续搅拌 5小时后，停止加热，通冷却水使釜内温度降至室温后停止搅拌。将 574g偏铝酸钠和 186.2g氢氧化钠溶入 6060ml水中，待完全溶解后将溶解有氧化硅的碱液加入其中，此时，混合料中的物料摩尔比为 2Si0₂： A1₂0₃： 3.165Na₂0: 120H₂O。搅拌 30分钟后移入 10 L反应釜中，启动搅拌至 60 转 /分钟，升温至 100°C , 晶化 4.5 小时，停止加热，通冷却水使反应釜温度降至室温，停止搅拌后开釜，对釜内物料进行抽滤，洗涤，然后在鼓风烘箱中 70°C条件下干燥 8小时得到白色固体产物，将该产物研磨后，加入 300g氢氧化钙，拌和均勾后装入密封瓶中保存。本发明沥青混合料中的抗车辙沥青改性剂也是自制的，本发明的沥青混合料中加入抗车辙沥青改性剂后具有如下的作用机理：一是集料增粘作用。抗车辙沥青改性剂拌和时首先与集料干拌，部分熔融于集料表面，提高了集料的粘结性，相当于对集料进行了预改性；二是沥青改性作用。抗车辙沥青改性剂在湿拌和运输过程中，部分溶解或溶胀于沥青中，形成胶结作用，从而达到提高软化点温度、增加粘度、降低热敏性等沥青改性的作用；三是纤维加筋作用。聚烯烃形成的微结晶区具有相当的劲度，在拌和过程中部分拉丝成塑料纤维，在集料骨架内搭桥交联而形成纤维加筋作用；四是细集料骨架作用。抗车辙沥青改性剂在施工中临时软化，然后这些颗粒在碾压过程中热成型，相当于具有高粘附性的单一粒径细集料填充了集料骨架中的空隙，增加了沥青混合料结构的骨架作用，同时降低了成型路面的渗透性；五是变形恢复作用。抗车辙沥青改性剂中的弹性成分在较高温度时具有使路面的变形部分弹性恢复的功能，因而降低了成型沥青路面的永久变形。 Dissolve 420 g of sodium hydroxide in 1500 ml of water, transfer to a 2 L reaction vessel, then add 420 g of quartz sand, start stirring to rotate at 300 rpm, and increase the temperature to 200 ° C. After stirring for 5 hours, stop heating. The cooling water was stopped after the temperature in the kettle was lowered to room temperature. 574 g of sodium metaaluminate and 186.2 g of sodium hydroxide were dissolved in 6060 ml of water, and after the complete dissolution, the alkali solution in which silicon oxide was dissolved was added thereto, at this time, the molar ratio of the materials in the mixture was 2Si0 ₂ : A1 ₂ 0 ₃ : 3.165Na ₂ 0: 120H ₂ O. After stirring for 30 minutes, transfer to a 10 L reactor, start stirring to 60 rpm, heat to 100 ° C, crystallization for 4.5 hours, stop heating, pass the cooling water to reduce the temperature of the reactor to room temperature, stop stirring, and then open the kettle. The material in the kettle was suction filtered, washed, and then dried in a forced air oven at 70 ° C for 8 hours to obtain a white solid product. After the product was ground, 300 g of calcium hydroxide was added, and the mixture was mixed and sealed, and then placed in a sealed bottle. save. The anti-rutting asphalt modifier in the asphalt mixture of the invention is also self-made. The asphalt mixture of the invention has the following action mechanism after adding the anti-rutting asphalt modifier: First, the aggregate thickening effect. The anti-rutting asphalt modifier is first mixed with the aggregate and partially melted on the aggregate surface to improve the adhesion of the aggregate, which is equivalent to the pre-modification of the aggregate; the second is the asphalt modification. During the wet mixing and transportation process, the anti-rutting asphalt modifier partially dissolves or swells in the asphalt to form a cementation effect, thereby improving the softening point temperature, increasing the viscosity, reducing the heat sensitivity and the like, and the third is the fiber reinforcement effect. . The microcrystalline region formed by the polyolefin has considerable stiffness, and is partially drawn into plastic fibers during the mixing process, and cross-linked in the aggregate skeleton to form a fiber reinforced effect; the fourth is a fine aggregate skeleton. The anti-rutting asphalt modifier temporarily softens during construction, and then these pellets are thermoformed during the rolling process, which is equivalent to a single-size fine aggregate with high adhesion filling the voids in the aggregate skeleton, increasing the asphalt mixing. The skeleton function of the material structure reduces the permeability of the formed pavement at the same time; The elastic component in the anti-rutting asphalt modifier has a function of elastically recovering the deformed portion of the road surface at a higher temperature, thereby reducing the permanent deformation of the formed asphalt pavement.

本发明的沥青改性剂，在普通沥青混合料中掺加 1%。~ 6%。，即可显著提高沥青混合料的高温性能即抗车辙性，动稳定度达到 7000 次以上，并改善抗水损坏性能、抗低温开裂等性能，性价比高。低掺量时（ 1%。~ 3%o ) 维持最佳油石比不变。高掺量时（4%。~ 6%。）最佳油石比适当增加 0.1 ~ 0.2%。 The asphalt modifier of the present invention is blended with 1% in a conventional asphalt mixture. ~ 6%. , can significantly improve the high temperature performance of asphalt mixture, that is, rutting resistance, dynamic stability of more than 7000 times, and improve water resistance damage resistance, low temperature cracking and other performance, cost-effective. When the dosage is low (1%.~ 3%o), the optimum oil-stone ratio is maintained. When the dosage is high (4%.~ 6%.) The optimum ratio of oil to stone is 0.1 to 0.2%.

自制的抗车辙沥青改性剂由以下组份及重量份制成：聚烯烃 10 ~ 20 份，橡胶粉 1 ~ 80份，抗氧剂 0.5-1份，聚烯烃为 PE、 PP、 EVA, APP、 APAO、 POE、 HDPE、 LDPE 及 LLDPE 之一或其组合，橡胶粉细度为 20 ~ 100 目。其中 LDPE的熔点大于 120 °C。 LLDPE的熔融指数为 20克 /lOmin, 熔点 123 °C。 POE为美国陶氏的 8150。 The self-made anti-rutting asphalt modifier is made up of the following components and parts by weight: 10-20 parts of polyolefin, 1 ~ 80 parts of rubber powder, 0.5-1 parts of antioxidant, PE is PE, PP, EVA, APP One or a combination of APAO, POE, HDPE, LDPE and LLDPE, the rubber powder has a fineness of 20 to 100 mesh. The melting point of LDPE is greater than 120 °C. LLDPE has a melt index of 20 g / lOmin and a melting point of 123 °C. POE is 8150 for Dow in the United States.

( 1 )在转速为 15 ~ 25 转 /分钟条件下，将聚烯烃、橡胶粉和抗氧剂混合均匀； (1) Mixing polyolefin, rubber powder and antioxidant at a speed of 15 ~ 25 rpm;

( 2 )将步骤（1 )得到的混合物在 8 ~ 12 分钟内升温至 80°C , 再在 15 ~ 20分钟内升温至 150°C , 最后在 3 ~ 7分钟内升温至 200°C ; ( 3 )通过加热熔融釜、开炼机、单螺杆挤出机、双螺杆挤出机或亨舍尔混合机混合成型，造粒或切片成型，制得沥青改性剂成品。 (2) The mixture obtained in the step (1) is heated to 80 ° C in 8 ~ 12 minutes, and then heated to 150 ° C in 15 ~ 20 minutes, and finally heated to 200 ° C in 3 ~ 7 minutes; (3) The finished product of the asphalt modifier is obtained by mixing, forming, granulating or slicing a heated melt vessel, an open mill, a single-screw extruder, a twin-screw extruder or a Henschel mixer.

自制的抗车辙沥青改性剂的 3个实施例如下： Three implementations of homemade anti-rutting asphalt modifiers are as follows:

实施例 9 Example 9

按重量份称取 15份 PE; 50份橡胶粉（或再生橡胶粉），细度为 25 目； 0.5份亚磷酸酯类抗氧剂 168。在转速为 20 转 /分钟条件下，将聚烯烃 PE和橡胶粉混合均匀；然后在 10分钟内将混合物升温至 80 °C , 再在 15 分钟内升温至 150°C , 最后在 5 分钟内升温至 200°C ; 将混合物冷却后通过双螺杆挤出机挤塑成型，制得成品，同时装桶以备用。 Weigh 15 parts of PE by weight; 50 parts of rubber powder (or recycled rubber powder), fineness of 25 mesh; 0.5 part of phosphite antioxidant 168. The polyolefin PE and the rubber powder were uniformly mixed at a rotation speed of 20 rpm; then the mixture was heated to 80 ° C in 10 minutes, then heated to 150 ° C in 15 minutes, and finally heated in 5 minutes. To 200 ° C; the mixture was cooled and extruded by a twin-screw extruder to obtain a finished product, and at the same time, the drum was reserved.

实施例 10 Example 10

按重量份称取 5份 PE 5份 APP 5份 LDPE 5份 EVA; 橡胶粉 (或再生橡胶粉） 80份，细度为 70 目； 0.9份酚类抗氧剂 1010。制备步骤同实施例 1。其中 LDPE的熔点大于 120°C Weigh 5 parts by weight of PE 5 parts APP 5 parts LDPE 5 parts EVA; 80 parts of rubber powder (or recycled rubber powder), fineness of 70 mesh; 0.9 parts of phenolic antioxidant 1010. The preparation steps were the same as in Example 1. Wherein the melting point of LDPE is greater than 120 ° C

实施例 11 Example 11

按重量份称 5份 PE 5份 HDPE 5份 PP 5份 LDPE; 橡胶份（或再生橡胶份） 70份，细度为 50 目； 0.8份亚磷酸酯类抗氧剂 168。制备过程、条件同实施例 1。其中 LDPE的熔点大于 120 °C 5 parts by weight PE 5 parts HDPE 5 parts PP 5 parts LDPE; 70 parts rubber parts (or recycled rubber parts), fineness 50 mesh; 0.8 parts phosphite antioxidant 168. The preparation process and conditions were the same as those in Example 1. Wherein the melting point of LDPE is greater than 120 °C

下面表格中数据都用 AC-13级配的沥青混合料为基准的。 The data in the table below is based on AC-13 grade asphalt mix.

AC-13 沥青混合料配合比釆用 70 号重交沥青，经检测符合《公路沥青路面施工技术规范》（JTG F40-2004 )对 70号道路石油沥青 A级标准的要求。 AC-13 Asphalt Mixing Ratio used No. 70 heavy-duty asphalt, which has been tested to meet the requirements of Class A of Grade 70 Petroleum Asphalt for Technical Specification for Highway Leaching Road Construction (JTG F40-2004).

AC- 13 沥青混合料配合比釆用石灰岩： 10-20mm碎石、 10- 15mm碎石、 5-10mm碎石、 0-5石屑。经检测符合《公路沥青路面施工技术规范》 ( JTG F40-2004 )对沥青面层用集料质量要求。 AC- 13 asphalt mixture with limestone: 10-20mm gravel, 10- 15mm gravel, 5-10mm gravel, 0-5 stone chips. It has been tested to meet the quality requirements of aggregates for asphalt surface layer in the Technical Specifications for Construction of Highway Asphalt Pavements (JTG F40-2004).

AC-13 彩色沥青混合料集料釆用石灰石矿粉，经检测符合《公路沥青路面施工技术规范》（ JTG F40-2004 )对沥青面层用集料质量要求。 The AC-13 color asphalt mixture aggregate is made of limestone ore powder and has been tested to meet the aggregate quality requirements for asphalt surface layer in JTG F40-2004.

AC-13混合料级配类型表 AC-13 Mixing Gradation Type Table

规范

specification

100 100 92 80 72 56 44 33 24 17 13 7 上限 100 100 92 80 72 56 44 33 24 17 13 7 Upper limit

规范 Specification

100 90 78 62 50 26 16 12 8 5 4 3 下限 100 90 78 62 50 26 16 12 8 5 4 3 Lower limit

实施例所得成品性能测试：按照《公路沥青路面施工技术规范》 Performance test of the finished product obtained in the example: According to "Technical Specifications for Construction of Highway Asphalt Pavement"

( JTG F40-2004 ) 热拌沥青混合料配合比设计方法，进行马歇尔最佳沥青用量设计试验，其中，外加剂釆用 70#胶粉车辙剂的添加量为 0.4%, 相关试验结果如下： (JTG F40-2004) The mix design method of hot mix asphalt mixture is used to carry out the Marshall optimal asphalt dosage design test. The addition amount of the admixture used 70# rubber powder rutting agent is 0.4%. The relevant test results are as follows:

( 1 ) AC-13沥青混合料马歇尔稳定度 (1) AC-13 asphalt mixture Marshall stability

AC-13沥青混合料马歇尔稳定度试验记录表 AC-13 asphalt mixture Marshall stability test record

按结果分析最终确定 AC-13沥青混合料的最佳油石比为 5.0%。 According to the results analysis, the optimum oil-stone ratio of the AC-13 asphalt mixture was determined to be 5.0%.

( 2 ) AC-13 沥青混合料车辙 ( 2 ) AC-13 asphalt mixture rut

表 3 AC- 13 沥青混合料车辙试验记录表 Table 3 AC- 13 asphalt mixture rutting test record

试验碾压车辙变形值 Test, rolling, rutting deformation

温度油石比(％；) 速度实施例 1 实施例 2 实施例 3 Temperature oil-stone ratio (%;) speed Example 1 Example 2 Example 3

( C ) (；次 /min) 45 min 60min 45 min 60min 45 min 60min( C ) (; times / min) 45 min 60 min 45 min 60 min 45 min 60 min

60 ± 1 5.0 0.7 42 1.614 1.703 1.264 1.348 1.518 1.598 动稳定度（次 /mm) 1 8759 8698 8803 动稳定度变异系数 60 ± 1 5.0 0.7 42 1.614 1.703 1.264 1.348 1.518 1.598 Dynamic stability (times / mm) 1 8759 8698 8803 Dynamic stability coefficient of variation

6.5% 6.5%

(允许 <20%) (Allow <20%)

动稳定度（次 /mm) 8753 Dynamic stability (times / mm) 8753

动稳定度符合公路工程沥青规范要求 Dynamic stability meets the requirements of highway engineering asphalt

结论 in conclusion

动稳定度变异系数小于 20% , 符合规范要求烘料 160度，拌和 160度，成型 140度，碾压 100度通过上表可以看出，掺加本发明的沥青改性剂后，沥青混合料的抗车辙性能显著提高。对于常规的重交沥青面层，在 60 士 1 °C ; 轮压荷载为 0.7MPa的动稳定度可以达到 8600 ~ 8800次 /mm。 Dynamic stability coefficient of variation less than 20%, in line with regulatory requirements The baking material is 160 degrees, the mixing is 160 degrees, the molding is 140 degrees, and the rolling is 100 degrees. It can be seen from the above table that the anti-rutting performance of the asphalt mixture is remarkably improved after the addition of the asphalt modifier of the invention. For the conventional heavy-duty asphalt surface layer, the dynamic stability of the wheel load of 0.7 MPa can reach 8600 ~ 8800 times / mm at 60 ± 1 °C.

( 3 ) AC-13沥青混合料残留稳定度 (3) Residual stability of AC-13 asphalt mixture

表 4 AC-13沥青混合料残留稳定度试验记录表 Table 4 AC-13 asphalt mixture residue stability test record

( 4 ) AC-13沥青混合料冻融劈裂 (4) AC-13 asphalt mixture freeze-thaw splitting

AC- 13沥青混合料冻融劈裂试验记录表 AC- 13 asphalt mixture freeze-thaw split test record

通过上表可以看出，掺加抗车辙沥青改性剂和温拌沥青添加剂后，沥青混合料的劈裂强度绝对值和冻融劈裂残留强度比都有所提高，提高大概 It can be seen from the above table that after adding the anti-rutting asphalt modifier and the warm asphalt additive, the absolute value of the splitting strength and the freeze-thaw splitting residual strength ratio of the asphalt mixture are improved.

10%, 有显著的进步。明，不能认定本发明的具体实施只限于这些说明。对于本发明所属技术领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干简单推演或替换，都应当视为属于本发明的保护范围。 10%, there is significant progress. It is to be understood that the specific implementation of the invention is not limited to the description. It will be apparent to those skilled in the art that the present invention may be made without departing from the spirit and scope of the invention.

Claims

权利要求 Rights request

1、一种温拌抗车辙的沥青混合料，所述沥青混合料包括温拌沥青添加剂和抗车辙沥青改性剂，所述温拌沥青添加剂占所述沥青混合料重量的 2.5%。 ~ 5%。，所述抗车辙沥青改性剂占所述沥青混合料重量的 1%。 ~ 6%。。 A warm mix anti-rutting asphalt mixture, the asphalt mixture comprising a warm mix asphalt additive and an anti-rutting asphalt modifier, the warm mix asphalt additive comprising 2.5% by weight of the asphalt mixture. ~ 5%. The anti-rutting asphalt modifier accounts for 1% by weight of the asphalt mixture. ~ 6%. .

2、根据权利要求 1 所述的温拌抗车辙的沥青混合料，其中：所述温拌沥青添加剂由石英砂、氢氧化钠、铝酸钠、水和氢氧化钙制备而成，所述石英氢氧化钠、铝酸钠、水和氢氧化钙的重量配比依次为 0.65 ~ 0.85: 0.95 ~ 1.5: 1: 9.5 ~ 22: 0.24 ~ 0.75。 2. The warm mix anti-rutting asphalt mixture according to claim 1, wherein: the warm mix asphalt additive is prepared from quartz sand, sodium hydroxide, sodium aluminate, water and calcium hydroxide, the quartz The weight ratio of sodium hydroxide, sodium aluminate, water and calcium hydroxide is 0.65 ~ 0.85: 0.95 ~ 1.5: 1: 9.5 ~ 22: 0.24 ~ 0.75.

3、根据权利要求 2 所述的温拌抗车辙的沥青混合料，其中：所述温拌沥青添加剂的制备方法包括以下步骤： 3. The warm mix anti-rutting asphalt mixture according to claim 2, wherein: the preparation method of the warm asphalt additive comprises the following steps:

( 1 ) 第一次水热处理：将石英砂、氢氧化钠和水按照重量比 1:0.5 ~ 1.5: 3~5进行混合，将混合后产物加入反应釜中在 200-300转 /分钟搅拌条件下加热至 160~230°C, 继续搅拌 3~5 小时后停止加热，待反应釜冷却后停止搅拌； (1) First hydrothermal treatment: Mix quartz sand, sodium hydroxide and water according to the weight ratio of 1:0.5 ~ 1.5: 3~5, and add the mixed product to the reaction kettle at 200-300 rpm for stirring conditions. Heat down to 160~230 °C, continue to stir for 3~5 hours, stop heating, stop stirring after the reactor is cooled;

(4) 复配：将步骤（3 )得到的产物研磨后与氢氧化钙按照重量比 3~9： 1混合均匀，即得到温拌沥青添加剂。 (4) Compounding: The product obtained in the step (3) is ground and then mixed with calcium hydroxide in a weight ratio of 3 to 9:1 to obtain a warm mixed asphalt additive.

4、根据权利要求 1 所述的温拌抗车辙的沥青混合料，其中：所述抗车辙沥青改性剂由以下组份及重量份制成：聚烯烃 10 ~ 20份，橡胶粉 1 ~ 4. The warm mix anti-rutting asphalt mixture according to claim 1, wherein: the anti-rutting asphalt modifier is made of the following components and parts by weight: polyolefin 10-20 parts, rubber powder 1 ~

80份，抗氧剂 0.5-1 份，聚烯烃为 PE、 PP、 EVA, APP、 APAO、 POE、 HDPE、 LDPE及 LLDPE之一或其组合，橡胶粉细度为 20 ~ 100目。 80 parts, antioxidants 0.5-1 parts, polyolefins are PE, PP, EVA, one or a combination of APP, APAO, POE, HDPE, LDPE and LLDPE, and the fineness of rubber powder is 20 ~ 100 mesh.

5、根据权利要求 4 所述的温拌抗车辙的沥青混合料，其中：所述橡胶粉为天然橡胶、丁苯、丁腈、氯丁、顺丁、异戊和 /或三元乙丙橡胶粉。 5. The warm mix anti-rutting asphalt mixture according to claim 4, wherein: the rubber powder is natural rubber, butylbenzene, butyronitrile, chloroprene, cis-butane, isoprene and/or EPDM rubber. powder.

6、根据权利要求 4 所述的温拌抗车辙的沥青混合料，其中：所述橡胶粉为天然橡胶、丁苯、丁腈、氯丁、顺丁、异戊和 /或三元乙丙橡胶的再生橡胶粉，所述再生橡胶粉为含硫或脱硫的橡胶粉。 6. The asphalt mixture of warm mix and rutting according to claim 4, wherein: the rubber powder is natural rubber, butylbenzene, butyronitrile, chloroprene, cis-butane, isoprene and/or EPDM rubber. Recycled rubber powder, the regenerated rubber powder is a sulfur-containing or desulfurized rubber powder.

7、根据权利要求 4 所述的温拌抗车辙的沥青混合料，其中：所述抗氧剂为酚类或亚磷酸酯类抗氧剂的一种或两种的混合物。 7. The warm mix anti-rutting asphalt mixture according to claim 4, wherein: The oxygen agent is a mixture of one or two of phenolic or phosphite antioxidants.

8、根据权利要求 4 至 7 中任一项所述的温拌抗车辙的沥青混合料，其中：所述抗车辙沥青改性剂的制备方法包括以下步骤： The warm mix anti-rutting asphalt mixture according to any one of claims 4 to 7, wherein: the preparation method of the anti-rutting asphalt modifier comprises the following steps:

(1 )在转速为 15 ~ 25转 /分钟条件下，将聚烯烃、橡胶粉和抗氧剂混合均匀； (1) Mixing polyolefin, rubber powder and antioxidant at a speed of 15 ~ 25 rpm;

(2)将步骤（1 )得到的混合物在 8~ 12 分钟内升温至 80°C, 再在 15~20分钟内升温至 150°C, 最后在 3~7分钟内升温至 200°C; (2) The mixture obtained in the step (1) is heated to 80 ° C in 8 to 12 minutes, and then heated to 150 ° C in 15 to 20 minutes, and finally heated to 200 ° C in 3 to 7 minutes;

9、一种如权利要求 1 至 8任一项所述的温拌抗车辙的沥青混合料的制备方法，步骤在于： 9. A method of preparing an asphalt mixture for warm mixing and anti-rutting according to any one of claims 1 to 8, the steps of:

90秒； 90 seconds;

10、一种如权利要求 1至 8任一项所述的温拌抗车辙的沥青混合料的制备方法，步骤在于： 10. A method of preparing an asphalt mixture for warm mixing and anti-rutting according to any one of claims 1 to 8, the steps of:

( 3 ) 调节温度至 140 ~ 170 °C时加入沥青和温拌沥青添加剂，在 110 ~ 170 °C下湿拌 80 ~ 90秒； (3) Adding asphalt and warm asphalt additive when adjusting the temperature to 140 ~ 170 °C, wet mixing at 110 ~ 170 °C for 80 ~ 90 seconds;