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首页> 外文期刊>The international journal of pavement engineering & asphalt technology >A NEW PRESERVATION TECHNOLOGY FOR POROUS ASPHALT: A MULTI-MODAL, BIOPOLYMER STABILIZED, REJUVENATING ASPHALT EMULSION
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A NEW PRESERVATION TECHNOLOGY FOR POROUS ASPHALT: A MULTI-MODAL, BIOPOLYMER STABILIZED, REJUVENATING ASPHALT EMULSION

机译：多孔沥青保护的新技术：多模态，稳定的生物聚合物，活化沥青乳液

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Open textured asphalt roads are very common in the Netherlands and Japan. Their main advantages over dense bituminous materials are traffic noise reduction and their quick draining properties, leading to reduction in splash and spray. Unfortunately they have lower durability than their dense counterparts, particularly the very low noise asphalts, and stone loss or ravelling is common after a certain period in time. Once this happens then noise generation increases on these damaged surfaces and of course the road deteriorates. For the preservation of these open graded asphalt roads a multi-modal emulsion, containing rejuvenating components, has been developed, which can be sprayed onto the road surface using standard spraying equipment. The fast breaking emulsion is subsequently forced into the open graded structure by an air flow, whereby the internal surface is recoated, existing bonds between the aggregates are rejuvenated and new bonds are created. The multi-modal emulsion combines various functional properties, viz., good wetting of the internal structure of the open graded asphalt,rejuvenation of oxidized and aged asphalt and replenishment of asphalt to create new bonds and to reinforce the pavement structure. Tests conducted over the last three years at the A6, A50, A73, A30, A1 have proven that stone loss has been significantly reduced and the service life of the road is expected to increase with at least 4 years. Furthermore, damage, i.e.,, stone loss during wintertime, is almost negligibly small in comparison to untreated parts of the open graded roads. It is expected that frequent preservation, for example every 4 years, might even extend the service life of the road with a factor close to 2. New analysis techniques like the RSAT tests [harsh wheel abrasion test], new microscopy tools and also more classical means of analyses have been performed on over 150 asphalt cores of the abovementioned highways, and the studies have corroborated that this technology will result in the predicted service life increase.
机译：开阔的沥青路面在荷兰和日本非常普遍。与稠密的沥青材料相比，它们的主要优点是交通噪音的降低和其快速排放的特性，从而减少了飞溅和喷雾。不幸的是，它们的耐用性要比致密的同类产品低，尤其是噪音极低的沥青，并且经过一段时间后石材损失或碎裂现象很普遍。一旦发生这种情况，这些受损表面上的噪音就会增加，当然道路也会恶化。为了保护这些开放坡度的柏油道路，已开发出一种含有复活成分的多峰乳液，可以使用标准喷涂设备将其喷涂到路面上。随后通过空气流将快断裂乳液压入开放渐变结构中，从而对内表面进行重新涂层，使集料之间的现有键重新焕发活力，并创建新的键。多峰乳液具有多种功能特性，例如，开放级沥青的内部结构良好的润湿性，氧化和老化的沥青的回春作用以及沥青的补给，可以形成新的粘结并增强路面结构。在过去三年中，对A6，A50，A73，A30，A1进行的测试证明，石材损失已显着减少，道路的使用寿命预计至少会延长4年。此外，与未平整道路的未处理部分相比，损坏，即冬季的石材损失几乎可以忽略不计。可以预期，频繁的保护（例如每4年一次）甚至可以使道路的使用寿命延长近2倍。新的分析技术，例如RSAT测试（严苛的车轮磨损测试），新的显微镜工具以及更经典的技术已经对上述高速公路的150多个沥青芯进行了分析，研究证实了该技术将导致预期的使用寿命增加。

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