中国核心期刊scene

沥青玛蹄脂碎石混合料是一种由沥青、纤维稳定剂、矿粉及少量的细集料组成的沥青玛蹄脂，填充间断级配的粗集料骨架间隙而形成的眼挤型密实结构混合料。SMA改性沥青及SMA路面是一种新型的路面结构，改性沥青及SMA混合料冷却后非常坚硬，强度高。本文结合上海城市外环线(浦东段)环南一大道工程的施工，谈谈如何对改性沥青及SMA路面的施工进行控制。一、工程综述本工程北起张扬路立交东至环东一大道，路幅红线宽度100米，为城市Ⅰ级主干道，双向8车道，总长2387米。车行道结构形式为沥青柔性路面，结构层组成为路基+15厘米砂砾垫层+40厘米二灰碎石基层+15厘米三层式沥青混凝土面层。面层组合如下：表面层为改性沥青玛蹄脂碎石混合料（SMA-16）4厘米；中面层为中粒式改性沥青砼（LH-25）6厘米；底面层为粗粒式改性沥青砼（CLH-35）6厘米；下封层1厘米。二、改性沥青施工质量控制的难点1.改性沥青混合料粘度较高，各工序的施工温度均比普通沥青混合料的施工温度要求高，贮存、运输期间的降温不应超过10℃，生产厂至施工现场的距离较长，上海交通繁忙，气候变化大，混合料贮藏温度控制难。2.沥青路面施工质量与摊铺机械的性能密切相关，沥青摊铺机械型号多种，性能不一。如何选择性能良好的施工机械，是工程质量控制的重点。3.沥青摊铺时，必须均匀、连续，工人素质必须高，要能正确判断摊铺界面。三、SMA沥青的拌合及施工1.沥青混合料拌合。由于SMA与普通密级配沥青砼最大不同之处是SMA为间断级配，粗集料粒径单一、量多、细集料很少，矿粉用量多。细集料包括石屑和砂一共只需15%左右，给混合料的供料拌和带来不少困难。为此，料斗、料仓要重新安排，增加粒径为5～10毫米的骨料仓，以保证冷料数量，而细集料用量很少，冷料仓门开启很少，供料过程中要保持细集料干燥，以保证细集料顺利供料。主皮带把粗配料送入滚洞，通过燃烧器对骨料加热，有热电偶检测料温，自动调节燃烧器的风油比，使骨料温度达到190℃～200℃。热料经提升机进入振动筛，把热料按目标配合比的规格要求分筛到不同的热料仓（筛网尺寸可根据要求更换），有计算机控制各热料仓拉门，按输入的生产配合比自动配料、计量，由于SMA粗料粒径单一，细料很少，热料可能会发生粗集料仓经常不足（亏料），而细集料仓经常溢仓的不正常情况，控制室的操作人员不可调整放料的数量，使SMA的配合比不准。然后将木质素纤维加入到搅拌锅与骨料共同进行干拌，再添加经计算机控配比控制计量的石粉及沥青，拌和后，完成成品料的生产。SMA的干拌时间为4秒～5秒，湿拌30秒～45秒。各种材料加热温度控制：沥青加热温度160℃～165℃，现场制作温度165℃～170℃，加工最高温度175℃，集料加热温度190℃～200℃，混合料出场温度175℃～185℃，混合料最高温度（废弃温度）195℃，摊铺温度不低于160℃，初始开始温度不低于150℃，复压最低温度不低于130℃，碾压终了温度不低于130℃，开放交通温度不高于60℃。2.运输。由于SMA沥青混合料的沥青玛蹄脂的粘性较大，运输车的车厢底部要涂较多的油水混合物，而且为了防止运输车表面混合料结成硬壳，运输车运输过程中必须加盖油布，同时车量要适当增加。3.摊铺。沥青必须缓慢、均匀连续不间断地摊铺。摊铺过程中，不得随意变换速度或中途停顿，摊铺速度应根据拌和机产量，施工机械配套情况及摊铺层厚度、宽度确定。摊铺速度为米/分钟。4.碾压。碾压过程是面层施工中的重要环节，碾压SMA的八字方针为“紧跟、碾压、高频、低幅”，并合理地选择压路机组合方式及碾压步骤。5.接缝。（1）纵缝：根据本工程特点，我单位在沥青混合料摊铺过程中采用一台德国产ABG423摊铺机并排摊铺，采用此方式可以一次整幅摊铺，纵缝热接提高了路面的平整度，美化了路面的视觉效果。（2）横缝：SMA路面的接缝处理要比普通混合料困难一些，因此，摊铺时在边部设置挡板，也可以在沥青SMA层每天施工完工后，在其尚未冷却之前，即切割好，并利用水将接缝冲洗干净。第二天涂刷粘层油，即进行摊铺新混合料。沥青混合料施工中容易产生的问题：（1）过碾压：由于SMA路面的集料嵌挤作用，压实程度不大，压实度较易达到，但是随着碾压遍数的增加，集料不断地往下走，玛蹄脂一点点地向上浮，造成构造深度减小。在碾压过程中，特别注意表面构造保持在1～毫米，以便有适宜的构造深度。（2）出现油斑：SMA路面通车后出现油斑也是常见的一种病害，这是由于SMA的纤维拌合不均匀造成的。因此在拌合时，要严格控制纤维的投放数量和投放时间，并延长干拌时间，确保纤维拌合均匀。还要注意储藏期间纤维干燥，防止纤维受潮成团。（3）碾压成型温度不够高是常见的毛病。SMA在130℃碾压的效果就很差了。在低温时碾压，容易出现不平整。在行车过程中出现车辙，是因为碾压不足造成的。Asphalt of Stone Mastic is a mixture of asphalt from the fiber stabilizing agent, slag and a small amount of the fine aggregate composed of lipid Mastic Asphalt, filled with intermittent level of coarse aggregate skeleton space formed by squeezing eye-density Structure mixture. SMA modified asphalt road and SMA is a new type of pavement, and SMA modified asphalt mixture cooled very hard, high strength. Based in Shanghai, Link (Pudong), a South Central Avenue construction project, talk about how the modified asphalt road construction and SMA . Review of projectsThe project has publicized the North Road interchange east to Central Avenue East a road width of 100 meters pieces of red, as cities Ⅰ-level main road, two-way lane 8, the chief of 2,387 meters. Carriageway of the form of flexible asphalt pavement, structural layer of gravel for the roadbed +15 cm layer of grey rubble +40 cm grassroots +15 cm three asphalt concrete surface. Surface composition is as follows: for the modified asphalt surface layer of Stone Mastic mixture (SMA-16) 4 centimeters of the surface of tablets for-modified asphalt concrete (LH-25) 6 centimeters for the bottom layer Coarse-modified asphalt concrete (CLH-35) 6 centimeters under the closure of one , the modified asphalt construction quality control difficult1. Modified asphalt mixture viscosity higher, the process of construction than the general temperature of the asphalt mixture of high-temperature requirements, storage, transportation during the cooling should not exceed 10 ℃, manufacturing plant to the construction site of the long distance Shanghai heavy traffic, climate change, mixture storage temperature control . Asphalt road paving machinery and construction quality is closely related to the performance, a variety of types of asphalt paving machinery, mixed performance. How to choose the good performance of construction machinery, is the focus of project quality . Asphalt paving, it must uniform, continuous, workers must be of high quality, must be able to correct judgement paving , SMA asphalt mixing and Construction1. Asphalt mixture mixing. As with the SMA Miji with ordinary asphalt concrete is the biggest difference between the SMA for intermittent graded, coarse aggregate single particle size, quantity, fine aggregate small amount of slag and more. Stone Chip fine aggregate and sand, including a total of only around 15 percent, to the mixture of materials for mixing brought about many difficulties. To this end, the hopper, silo to re-arrangements, to increase the diameter of 5 to 10 mm aggregate positions, to ensure that the expected number of cold, fine aggregate amount of very few, very few cold silo door open for materials to maintain the course of Fine Aggregate drying, to ensure smooth for fine aggregate materials. The main ingredients into the thick belt of the roll-through on aggregate heating burner, a thermocouple detection feed temperature and automatically adjust the oil burner than the wind so that the aggregate temperature reaches 190 ℃ ~ 200 ℃. Heat expected to enter the elevator shaker, thermal materials on target to meet the specifications than the sub-screen to a different thermal bin (screen size can be replaced upon request), a computer control of the Silo flamenco, according to enter the Auto production mix ingredients, measuring, as a single SMA rough material particle size, small little material, thermal materials may be rough sets in less than regular hopper (deficit expected), while small-hopper often overflow warehouse is not the normal situation, control Room operators can not adjust the amount of discharge, the SMA not allowed to mix. Lignin fiber and then added to stir the pot with the aggregate common dry mix, then add the computer-control measures the ratio of powder and asphalt, mixing, the expected completion of the finished product. SMA mix the dry time of four seconds to five seconds, 30 seconds wet mix to 45 temperature control of various materials: asphalt temperature 160 ℃ ~ 165 ℃, the temperature at the scene produced 165 ℃ ~ 170 ℃, the highest temperature of processing 175 ℃, aggregate heating temperature 190 ℃ ~ 200 ℃, the temperature mixture out 175 ℃ ~ 185 ℃ , The highest temperature mixture (abandoned temperature) 195 ℃, paving the temperature of not less than 160 ℃, the initial starting temperature of not less than 150 ℃, repressing the lowest temperature of not less than 130 ℃, RCC ended temperature of not less than 130 ℃ Open transport temperature no higher than 60 ℃.2. Transportation. As SMA asphalt mixture of asphalt Mastic more viscous resin, the carrier at the bottom of the compartment to the oil-water mixture Tu more, and in order to prevent the carrier surface mixture form a hard shell, the carrier during transport to be decked Tarpaulin, it is necessary to appropriately increase the volume of . Paver. Asphalt must be slow, even for uninterrupted paver. Paving process, not free to transform the speed or stop half-way, paving the speed of production should be based on mixing, matching and construction machinery paving thickness, width identified. Paving a speed of m / . RCC. RCC is the process of construction of an important link in the RCC SMA eight-character principle for the "keeping up, rolling, high-frequency, low-rate" and a reasonable choice roller composition and RCC . Joints.(1) longitudinal seam: According to the engineering features, I unit in the asphalt paving mixture used in the course of a Germany-ABG423 paver paving side-by-side, this method can be a whole paver, longitudinal seam to increase the heat The smoothness of the road and beautify the road of visual effects.(2) Joints: SMA road handling the joints than ordinary mixture difficult, therefore, paving set at the edge of the baffle, can also SMA layer of asphalt a day after the completion of construction, not yet in its cooling, That is, cutting good, and joint use of water will be clean. The next day Tushua viscosity of the oil, that is paving the new asphalt mixture construction of the easy questions:(1) the RCC: As the road aggregate SMA embedded crowded, not degree of compaction, the degree of compaction easier to achieve, but with the RCC to increase the number of times, the aggregate continue to go down, Mastic A little bit of fat to the floating, resulting in reduced structural depth. RCC in the process, with particular attention to the surface structure remained at 1 to millimeters in order to have appropriate structural depth.(2) in the oil spot: SMA opening of the road after the oil spot is a common disease, which is due to the SMA fiber caused by uneven mixing. Therefore, in mixing, it is necessary to strictly control the number of fibers running and running time and extended dry mix, to ensure uniform mixing fibers. We must pay attention to storage during the dry fiber to prevent the fibers exposed to moisture into college.(3) RCC forming a high enough temperature is a common illnesses. SMA in the 130 ℃ RCC effect on the poor. In the low temperature at RCC, is not prone to the formation. In the lane in the process of rutting, is inadequate because of the RCC.你可以试下这个《road and bridge》——美刊可以看一些行内的核心期刊，比如《中国公路学报》《力学》等，也可以看看各个学校的学报，比如《同济大学学报》《哈工大学报》《长安大学学报》等，或者有些教材也可以作为参考文献。

师资方面广东理工学院，广东科技学院还有寸金学院较好，寸金学院和广东科技学院本科开展早一点，而广东理工从升本开始就下重本引进人才，然后具体的可以从以下几点进行区别分析：

一、师资力量对比

1、广东科技学院：据2021年3月广东科技学院官网显示，学校共有专任教师781人，学校具有硕士及以上学位教师占比达85%。

2、广东海洋大学寸金学院：截至2021年2月，学校有专兼职老师1100人，专任教师911人、外聘教师185人，外聘教师占专任教师总数的。

3、广州工商学院：截至2021年6月，学校教师总数为1505人，其中自有专任教师1056人，聘期两年以上的外聘兼课教师394人，聘请了聘期2年以内的外聘兼课教师110人，专任教师中，副高级职称以上教师325人（其中正高级职称142人，副高级职称183人），占专任教师总数的；具有硕士、博士学位的教师791人（其中博士61人，硕士730人），占专任教师总数的。

4、广东理工学院：根据2017年6月学校官网显示，学校有省级实验教学示范中心1个、省教育厅教学改革课题立项11项，市重点建设课程和教学改革课题共71项，省级重点培育学科2个、重点培育专业2个，校级特色专业1个、重点建设专业2个、精品课程8门。

5、广东东软学院：根据2017年3月学校信息显示，学院有享受国务院政府特殊津贴2人、国家二级教授2人、教育部“新世纪优秀人才支持计划”1人、省级优秀教育工作者2人、省级优秀教师6人；佛山市创新领军人才2人；校级学科带头人7人；校级专业带头人/负责人18人；校级千百十培养对象13人；校级创新团队5个。

二、研究成果对比

1、广东科技学院：2011年至2017年12月，学校教职工在各类学术期刊发表学术论文5290篇，其中全国中文核心期刊233篇，被EI/CPCI/CSSCI/CSCD收录161篇。

2、广东海洋大学寸金学院：2019年，学校2个项目获2019年湛江市科普活动（学术类）经费项目立项。5项广东省高等教育学会项目获批立项、15项湛江市非资助科技攻关计划项目获批立项。

3、广州工商学院：2019年，学校完成结项项目共17项，厅级11项，省级5项，横向项目1项公开发表论文共1392篇，其中SCI有18篇，EI有25篇，CPCI有8篇，CSSCI有16篇，北大核心有40篇。

4、广东理工学院：2014-2017年，教师累计公开发表学术论文1123篇，年人均发表论文数量篇；正式出版专著和教材71部；主持各级各类科研项目212项，科研经费累计投入1270万元。

5、广东东软学院：2014-2017年，教师累计公开发表学术论文1123篇，年人均发表论文数量篇；正式出版专著和教材71部；主持各级各类科研项目212项，科研经费累计投入1270万元。

三、学术资源对比

1、广东科技学院：截至2020年6月，学校图书馆馆藏图书310万册，其中纸质图书195万册，电子图书115万册，电子期刊万多种，光盘音像资料7万余件。2019年订购纸质期刊600种，纸质报纸100种，基本形成了以学校教学学科专业为主的藏书和综合文献保障体系。

2、广东海洋大学寸金学院：截至2020年12月，湛江科技学院图书馆在馆图书总册数万册。2019-2020学年新增图书万册。中外文纸质期刊693种，电子图书为万册。

3、广州工商学院：截至2020年12月，广州工商学院图书馆馆藏图书万册，有纸质期刊1062种、数据库41个、电子图书万册、电子期刊万册，收录博硕士学位论文累计册、音视频万小时。

4、广东理工学院：根据2017年6月学校官网显示，广东理工学院图书馆馆藏纸质藏书万册，电子图书92万册（4900GB）。

5、广东东软学院：根据2017年3月学校信息显示，广东东软学院图书馆馆藏纸质图书70万册，电子图书31万册;纸质报刊约450多种，电子期刊万多种，网络数据库2种，多媒体光盘资源1万多片，包含全文期刊1197万多篇。

以上内容参考百度百科——广东科技学院

以上内容参考百度百科——广东海洋大学寸金学院

以上内容参考百度百科——广州工商学院

以上内容参考百度百科——广东理工学院

以上内容参考百度百科——广东东软学院

我有很多关于环境影响评价的论文，你要的话可以发给你。核心期刊上找到的。

Jennifer Lopez - Let's Get Loud 试听

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优酷网是中国领先的视频分享网站，是中国网络视频行业的第一品牌。优酷网以 “快者为王”为产品理念，注重用户体验，不断完善服务策略，其卓尔不群的“快速播放，快速发布，快速搜索”的产品特性，充分满足用户日益增长的多元化互动需求，使之成为中国视频网站中的领军势力。

以上内容参考：视频网站_百度百科

Protect EnvironmentMany people are active in fighting against unfair treatment to colored people, women , animals and so on. Right now I am talking about fighting for respect to our the environment doesn’t have a mouth to deprecate what humans have done to her, she retaliates through action. In the early years the Chinese cut down large quantities of trees, at the source of the yellow river, which led to the disappearance of big forests and terrible floods. As a result，the Huangtu plateau which was once covered with grass and forests was turned into barrens that supported fewer plants. Another example was in several developed countries. Because many chemical factories discharged poisonous gas without filtering it, cities were covered with so much poisonous gas that people were killed by the air they breathed in. What horrible scene!What we are suffering is only a small part of what the nature once suffered. If we don’t take action to show respect to the environment, we will have to face an increasingly awful should be taken to protect the environment on which we are relying. First governments should forbid destroying vegetation, rivers and lakes, oceans, as and the atmosphere as well. Second voices should be made to announce the public of the importance of protecting the environment. Third enterprises should pay special attention to the effect they have on the environment and work out solutions for the by changing the way we treat the environment can we get along well with 保护环境 许多人都积极参与反对不公平的对待有色人种，妇女，动物等战斗。现在我所说的尊重我们的环境的战斗。 虽然环境没有嘴贬低人类做了什么给她，她通过报复行动。在最初几年中砍伐大量的树木，在黄河，导致了大森林和可怕的洪水失踪的来源。因此，在黄土高原是曾经覆盖着草地和森林的是能够支持到贫瘠之地变成植物较少。另一个例子是在一些发达国家。由于许多化学工厂排放未经过滤它有毒气体，城市都覆盖着这么多的有毒气体，人们通过呼吸的空气，他们什么可怕的场景只有死亡！ 我们正在遭受仅仅是什么性质一度被一小部分。如果我们不采取行动，尊重环境，我们将不得不面对日益可怕的局面。 应采取措施保护环境是我们的依靠。一是政府应禁止破坏植被，河流和湖泊，海洋，因为和气氛。二声音应宣布对保护环境的重要性公众。第三企业要特别注意他们的影响对环境所产生，并制定出解决问题的办法。 只有改变了我们的治疗环境，我们才能与它相处的很好。只有通过保护环境，我们才能挽救自己。