HM-WB400 asphalt mixture warm mix agent

Brief introduction of "HM-WB400" warm mix temperature agent

"HM-WB400" as a new type of polyolefin asphalt warm mix agent under the condition of heating, only simple mechanical stirring can be stably dispersed in asphalt, overcome the traditional asphalt warm mix agent is easy to cause water damage segregation and shortcomings; at the same time, it also can improve the low temperature performance of asphalt mixing, reduce and paving temperature, a substantial increase in the degree of compaction, effectively prolong the service life of the pavement and to reduce cost, is warm mix temperature with excellent comprehensive benefits spreading agent.

Physical and chemical properties of 1 "HM-WB400"

Appearance: white solid small particles;

Melting point: 105 + 5;

Density: 0.9~0.92

2 "HM-WB400" warm mix advantage

(1) the production and workability of asphalt mixture significantly improved

"HM-WB400" just add to the simple mechanical stirring can be hot asphalt, can be directly added to the mixture in the mixing together, do not need any additional mixing equipment; stirring, "HM-WB400" can be well dissolved in asphalt, no segregation.

(2) the construction and workability of asphalt mixture significantly improved

"HM-WB400" makes the asphalt mixture more easily compacted at low temperature, especially suitable for the winter period, thin long and large tunnel pavement and the pavement construction in low temperature; at the same time, the production and construction of high viscosity asphalt, pouring and rubber asphalt is relatively easy, so as to guarantee the road paving quality.

(3) low carbon environmental protection, water damage, delay aging, reduce the comprehensive cost of asphalt

The "HM-WB400" add less, and there is no need to add equipment, saving equipment, facilities and production of comprehensive energy consumption, warm mix cost is far lower than other forms of warm mix asphalt concrete;

The "HM-WB400" SO2, NO2 and CO decreased more than 80% toxic dust emissions, protect the health of construction workers, reduce the pollution of the environment;

The "HM-WB400" does not contain water, anhydrous damage risks, will not cause pavement cracks and crack capillary network;

The "HM-WB400" effectively delay the aging of asphalt, and improve the low temperature performance of asphalt mixture pavement, improve the road service life, reduce maintenance cost.

Warm mix of 3 "HM-WB400"

(1) less volume, good effect

Experiments show that, just add weight to 2.5% or 1.5 asphalt mixture weight for 0.25%~0.35%, "HM-WB400" can significantly reduce the asphalt mixture mixing, paving and rolling temperature of 20 to 40 DEG C, can easily increase the degree of compaction, and meet the specifications and construction requirements, integrated into the warm mix is far lower than that of other temperature asphalt concrete.

(2) no water, no water damage

Different from other common warm mix materials, "HM-WB400" contains no water, no crack or crack of pavement capillary network of water damage hazards, "adding asphalt HM-WB400" material seepage water is much lower than the number of not adding.

4 main application scope of "HM-WB400"

The need of engineering, such as: the construction of asphalt pavement pavement, tunnels and bridges, city road "white and black", as well as the winter rush period project; suitable for rain and snow and cold (environment temperature is not lower than -15 DEG C) construction of warm mix temperature under the climatic conditions of asphalt concrete.

The high temperature, high viscosity asphalt mastic asphalt and rubber asphalt asphalt products special viscosity.

Two, "HM-WB400" product application introduction

1 application profiles

"HM-WB400" can be directly added to the asphalt, can also direct mixing and mixing; and can be used as the mixture to improve the performance of warm mix agent can be compounded with other modifiers, in order to meet the needs of some special functions of mixture.

2 adding amount

According to the required finished asphalt weight of 1.5 ~ 2.5% (wet, outside) to add or the weight of asphalt mixture 0.25~0.35% (dry, external).

3 "HM-WB400" warm mix asphalt and its concrete production process

"HM-WB400" warm mix asphalt and its mixture production method is very simple, and ordinary asphalt and its mixture is the same, the following two ways are available:

(1) wet method

Directly into the "HM-WB400" into the asphalt and mix evenly (temperature is not less than 130 degrees Celsius, with 140 to 170 degrees C), no special equipment. Note, in addition, the "HM-WB400" can not be a one-time total investment, according to the proportion of the total weight of the calculated, divided into multiple sides of the mixing, to be evenly dispersed dissolved, then stir 30 to 60 minutes.

(2) dry method

In the aggregate heated after spraying asphalt at the same time, the "HM-WB400" in strict accordance with the proportion of one-time investment mix cylinder and mixing, the mixing time is no longer, according to the general requirements of mixing, mixing temperature can be directly reduced to 20 to 40 DEG C.

4 "HM-WB400" warm mix asphalt concrete construction technology

(1) the spread of "HM-WB400" warm mix asphalt

The paving process of "HM-WB400" warm mix asphalt is the same as that of common asphalt mixture, but the paving temperature can be 20 to 40 lower than that of the ordinary asphalt mixture.

(2) rolling of "HM-WB400" warm mix asphalt concrete

The "HM-WB400" of warm mix asphalt concrete rolling temperature can be lower than the ordinary asphalt concrete 20 ~ 40 DEG C, initial pressure temperature can be appropriately reduced, the number of rolling can be reduced properly to prevent undervoltage and overvoltage, the rolling requirements can refer to the following table, the specific rolling process should be determined according to the results of the test section construction;

The paver should be cooled to ambient temperature and can be re open to traffic.

Table 1 compaction requirements of "HM-WB400" warm mix asphalt concrete

三、“HM-WB400”温拌沥青及混凝土的技术指标

 表2 “HM-WB400”温拌重交沥青技术指标

表3  “HM-WB400”温拌SBS改性沥青技术指标

表4 “HM-WB400”温拌重交沥青混合料技术指标

表5 “HM-WB400”温拌改性沥青混合料（干法）技术指标

    表5是SBS改性沥青混合料在相同级配和油石比的条件下，在最佳击实温度下的混合料各项性能。采用AC-13级配成型沥青混合料试验表明，压实度满足规范要求大于94%的规定，空隙率降到规范要求之内的4.5%时，添加占沥青混合料质量0.3%HM-WB400温拌剂的样品的最佳击实温度仅为130℃，较未添加温拌剂的最佳击实温度降低了35℃；而“HM-WB400”温拌沥青混合料优异的低温性能及渗水系数，更充分体现出相对于其它温拌剂的巨大优势。

 四、“HM-WB400”的包装及储存方法

 1. “HM-WB400”温拌剂的包装、储存方法

    “HM-WB400”包装为25kg/袋，常温、干燥条件下可长期保存。

 2. “HM-WB400”成品温拌沥青的储存方法

       “HM-WB400”温拌沥青不易离析，因此可以在常温条件下不添加任何助剂而放置30天；再次使用时，须加热溶化后搅拌30～60分钟。