沥青碎石

To accelerate the widespread of Synchronous Chip Seal and improve the operation quality of Synchronous Chipsealer, key techniques which influence the operation quality is studied detailedly, including the control of distributing quality, the dynamics characteristics of hydraulic system and the spray characteristics of asphalt nozzle of Synchronous Chipsealer.1 The factors which influence Synchronous Chip Seal quality are studied. Fiducial probability of simultaneous distribution density is advised to be used in evaluating the distribution bias and standard deviation of asphalt and aggregates simultaneously, which is more advanced than the single index evaluation method used before.2 The volume efficiency formula of asphalt pump is revised after analyzing the data of volume efficiency with mathematical statistics, which is helpful to match the asphalt spray system and control the flow out of asphalt pump accurately. With equation deduction and experiment, dynamic of hydraulic system used in Synchronous Chipsealer is studied, which lay the theory foundation on improving the stability and efficiency from design and controlling.4 Simulation on hydraulic system used in Synchronous Chipsealer is done with AMESim; the results indicate that multi-circle parallel connected hydraulic system with constant pressure power is better than that with load-sensing pressure power at present, because the latter will oscillate when the multi circles work at the same time. This conclusion has been proved during the debug of Synchronous Chipsealer.5 Asphalt nozzle characteristics, such as flat jet shape, flow distribution, are studied with experiment, the results indicate that cross quality of asphalt distributing is not increased linearly follow the increase of fan overlap level, the best point usually exists between two whole overlap level, asphalt distributing quality is better than±4% at the 2.5 overlap level, meets the superior specified in standard; The distribution quality of Synchronous Chipsealer can be increased by spray asphalt of different flow rang with nozzle of different diameter

为了加快同步碎石封层技术的推广，提高同步碎石封层设备的作业质量，本文对同步碎石封层设备作业质量的影响因素与控制方法、液压系统的动力学特性和沥青喷嘴的喷洒特性等关键技术进行了深入细致的研究：1研究了影响同步碎石封层作业质量的因素，提出了采用联合密度分布置信概率对同步碎石封层中沥青洒布量和碎石撒布量的系统偏差和标准差指标进行综合评价的方法，克服了传统评价方法只能对单一指标进行评价的缺陷；2采用数理统计的方法，研究了沥青泵的容积效率特性，修正了沥青泵容积效率公式，为沥青喷洒系统的匹配和沥青泵出口流量的精确控制提供了依据；采用数理方程推导与试验相结合的方法，研究了同步碎石封层设备液压系统的动力学特性，为从设计和控制的角度提高同步碎石封层设备液压系统的稳定性和效率奠定了理论基础；3运用AMESim软件对采用负载敏感控制和恒压控制的两种同步碎石封层设备液压系统进行仿真，结果表明：负载敏感控制的并联液压系统在多回路同时工作时，由于液压泵排量控制参考压力不稳定，容易引发液压系统振荡，恒压控制的并联液压系统是目前技术条件下比较理想的同步碎石封层设备工作装置驱动方案；该结论亦通过同步碎石封层设备装机试验得到了验证。4采用试验的方法对沥青喷嘴的喷洒特性进行了研究，结果表明：沥青洒布的横向精度并不是随着喷洒扇面重叠度的增加线性增加，其最高点通常出现在二个重叠度之间的"半重叠位置"，"2.5重叠"洒布时，沥青的横向洒布精度≤±4%，可以达到国家相关标准中的优级标准；同步碎石封层设备还可以根据不同洒布量情况下的流量需求，采用不同通径的喷嘴进行喷洒，提高沥青洒布精度。

Selecting right asphalt and macadam and operating construction technique strictly are the guarantee of the good effect of synchronous macadam seal.

同步碎石封层技术是沥青路面养护的新工艺、新技术，性能良好的同步碎石封层机是实施同步碎石封层技术的基础，正确选用沥青和碎石、严格把握施工工艺是取得同步碎石封层良好效果的保证。

Based on the composing characteristics of materials（ATB-30） and the application practice of asphalt stabilized macadam base in Zhashui-Xiaohe expressway,the technical standard of raw and proce-ssed materials,materials composition design,the construction technique and construction quality control key points of ATB-30 were studied and analyzed.

根据ATB-30材料组成特点，结合柞小高速公路实体工程应用情况，从原材料技术要求、组成设计、施工工艺以及施工质量控制要点等方面对ATB-30沥青稳定碎石施工质量控制进行研究和分析，并提出ATB-30沥青稳定碎石施工工艺及质量控制方法，可供工程实践参考应用。

Authors designed four mixtures of dense-graded asphalt stabilized macadam base with the method recommended by Technical Specifications for Construction of Highway Asphalt Pavement, Superpave design method, coarse aggregate voids filling method and Bailey method separately, and determined the pavement performances of asphalt stabilized macadam base mixture under the optimal oil-stone rate which include resistance capacity to vertical deformation and fatigue. Then, four design methods were compared and appraised. Based on the above study, a new asphalt-stabilized macadam base mixture gradation design method-five control sieve design method was put forward.

分别采用现行规范推荐法、Superpave法、主骨架空隙体积填充法和贝雷法设计了4种密级配沥青稳定碎石基层混合料，然后采用力学指标设计法确定了所设计的4种级配沥青稳定碎石基层混合料的最佳油石比，并对最佳油石比下的沥青稳定碎石基层混合料进行了抗永久变形性能和抗疲劳性能等路用性能的研究；根据设计过程和设计结果对4种级配设计方法进行了比较评价，在此基础上提出了新的密级配沥青稳定碎石基层混合料的级配设计方法－五控制点级配设计方法。

Authors designed four mixtures of dense-graded asphalt stabilized macadam base with the method recommended by Technical Specifications for Construction of Highway Asphalt Pavement,Superpave design method,coarse aggregate voids-filling method and Bailey method separately,and determined the pavement performances of asphalt stabilized macadam base mixture under the optimal oil-stone rate which include resistance capacity to vertical deformation and fatigue.

分别采用现行规范推荐法、Superpave法、主骨架空隙体积填充法和贝雷法设计了4种密级配沥青稳定碎石基层混合料，然后采用力学指标设计法确定了所设计的4种级配沥青稳定碎石基层混合料的最佳油石比，并对最佳油石比下的沥青稳定碎石基层混合料进行了抗永久变形性能和抗疲劳性能等路用性能的研究；根据设计过程和设计结果对4种级配设计方法进行了比较评价，在此基础上提出了新的密级配沥青稳定碎石基层混合料的级配设计方法——五控制点级配设计方法。

A series of test are carried out to analyze the characteristics of high temperature rutting, low temperature crack resistance,water stability, fatigue resistance and skid resistance of stone mastic asphalt mixture, stone asphalt concrete and dense graded asphalt concrete. The results show that the pavement performance of SMA is super to the others.

摘 要：通过对沥青玛蹄脂碎石混合料、多碎石沥青混凝土、密级配沥青混凝土进行的一系列路用性能试验研究，包括高温变形特性、水稳性、低温抗裂性、抗疲劳特性以及抗滑特性试验，结果表明沥青玛蹄脂碎石混合料具有优良的路用性能。

In terms of paving materials and erecting methods, the steel deck pavement systems adopted in the world can be generalized into four types:The first one is the Gussasphalt. Then is the Mastic Asphalt. Another one is the Stone Mastic Asphalt. And the last one is the Epoxy Asphalt.SMA has been widely applied in western countries such as European countries, Japan and America for its strong anti-track capability and well durability. It is still under experimental stage yet in China.

从铺装材料和施工方法来分类，目前世界上所采用的钢桥面铺装体系，概括起来大致有四类：第一类为高温拌和浇注式沥青混凝土，第二类为沥青玛蹄脂混合料(实际上也是浇注式沥青混凝土，只是拌和、摊铺工艺有所不同)，第三类为沥青玛蹄脂碎石混合料(Stone Mastic Asphalt，简称SMA)，第四类为环氧树脂沥青混合料。

SMA-100-type road with lignin fibers are widely used in asphalt concrete pavement, including Asphalt gravel mixture (stone Mastic Asphalt, referred to as SMA) road, Upgraded with asphalt pavement, high-strength link layer of asphalt, asphalt concrete surface layer of mastic asphalt concrete and special projects such as asphalt mixture.

广泛用于沥青混凝土路面，包括：沥青玛蹄脂碎石混合料（stone Mastic Asphalt，简称SMA）路面、升级配沥青路面、高强度沥青连接层、沥青混凝土面层、浇注式沥青混凝土及特殊工程的沥青混合料等。

The test result shows that, for the asphalt pavement structure with thick hot-mix asphalt course, the influence of flexible or semi-rigid base on pavement rutting is little and perpetual deformation occurs mostly on the top asphalt layer of 20 centimeter depth.

环道试验测定结果表明：对于本试验三种沥青层厚度超过20 cm的沥青路面结构，土基对车辙的影响很小，级配碎石柔性基层和水泥稳定碎石半刚性基层对车辙的影响也很小，路面永久变形主要发生在20 cm深度范围的沥青层内。

This paper studied penetration of asphalt emulsion and asphalt diluted by paraffin and infection of preservation; presented optimal prime coat material and dosage, and determined optimal dosage of SBS modified asphalt and base asphalt as seal coat binder sprayed on cement stabilized gravel. This paper also analysed influence of different material combination on shear intensity between base and surface. The shear intensity of earthwork cloth is also researched through analysis on different cloth, temperature and treatment on gravel.

文中通过室内试验，研究了乳化沥青和煤油稀释沥青作为半刚性基层透层材料的渗透效果，以及基层不同养生龄期对其的影响，提出了水泥稳定碎石和二灰稳定碎石基层上最佳的透层材料及其最佳洒布量；研究和分析了下封层不同透封层材料的组合、不同结合料以及不同基底材料对封层材料用量以及基面层间抗剪强度的影响。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。