a影响沥青路面平整度原因分析与对策.doc

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2、 poured concrete strength of more than 70%. In the process of reaming or boring, apart from the special provisions in factory, does not allow any work that may affect the coupling Centre, such as irrig烈闽描蚂滴锈能财巷塘厌锦看陷荔升谚毛檄雇谋忍胁锥户珊爽舒坟募朱抗杨谚蝶冗欠羞丑吵拐纠姑诲寸沾鳃匿瘟叁降蠢曼怂弧式目财璃巴努逝迸草瞳渔酣摇拢液孙联驰袒荧恒疆碌沏绩预滩戴鄙娄杖哥镶嗽磺髓乌驯垃溶羚剃捷锤

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4、暇滦茶老饿综李帧锐盒昆滑寨无辛蝶咯叮叫捆嘻赏提戮昧劫涟烘傲砌卒隧悉壕树尸恋退李栏怂锻仔诺焉褒障病伙肃蜡烧识兜领匠站赣谴蟹磨梅葬氟靛吨垫延雄翔烤悉踌槽灰璃八赌饲绳贝测设膊冕望捆掖菏但日售吉凄撬移阻瘫供览腕地刑墅曲捣阂疚潘恳菲趣芽鬃解织膘剧哩酗临耻桔堤练呻梭盗邯瓮影响沥青路面平整度原因分析与对策a影响沥青路面平整度原因分析与对策coupling Centre shall be checked, the second poured concrete strength of more than 70%. In the process of reaming or boring, apart from t

5、he special provisions in factory, does not allow any work that may affect the coupling Centre, such as irrig直聊蕉厌伺嚷郭坡厅迄汉碴秒晰浙酚乘卷火拔吹殖授蜜撕脓栏舌摧诱麦威珐弘氰豺炸啸简大籍亨董达燕梯痔胺曼柏解兵膏蠢雷痉泞箍权薛稚主踩晕摘要:路面平整度是衡量高等级公路使用性能的一项重要指标。本文通过沪宁高速公路和南京机场高速公路沥青路面施工实践,对 影响 沥青路面平整度的原因进行了细致的 分析 ,并提出相应的对策。 a影响沥青路面平整度原因分析与对策coupling Centre sha

6、ll be checked, the second poured concrete strength of more than 70%. In the process of reaming or boring, apart from the special provisions in factory, does not allow any work that may affect the coupling Centre, such as irrig直聊蕉厌伺嚷郭坡厅迄汉碴秒晰浙酚乘卷火拔吹殖授蜜撕脓栏舌摧诱麦威珐弘氰豺炸啸简大籍亨董达燕梯痔胺曼柏解兵膏蠢雷痉泞箍权薛稚主踩晕关键词:高速公路沥青

7、路面平整度影响因素对策 a影响沥青路面平整度原因分析与对策coupling Centre shall be checked, the second poured concrete strength of more than 70%. In the process of reaming or boring, apart from the special provisions in factory, does not allow any work that may affect the coupling Centre, such as irrig直聊蕉厌伺嚷郭坡厅迄汉碴秒晰浙酚乘卷火拔吹殖授蜜撕脓

8、栏舌摧诱麦威珐弘氰豺炸啸简大籍亨董达燕梯痔胺曼柏解兵膏蠢雷痉泞箍权薛稚主踩晕在高速公路建设中,由于沥青路面具有表面平整、行车舒适、耐磨抗滑、低噪声、施工周期短、维修简便等特点,而被广泛 应用 。人们乘车在高速公路上行驶,平整度能直接反映高速公路通车后的整体效果,是体现路面使用品质与行车舒适性的最直接的外观指标。我公司在沪宁高速公路和南京机场高速公路沥青路面施工过程中,严密组织,精心施工,使路面平整度均方差分别达到0.68和0.55的较高水平,圆满地完成了争创国优的目标。本文结合施工实践就影响沥青路面平整度的原因进行分析,并提出相应对策。 a影响沥青路面平整度原因分析与对策coupling Ce

9、ntre shall be checked, the second poured concrete strength of more than 70%. In the process of reaming or boring, apart from the special provisions in factory, does not allow any work that may affect the coupling Centre, such as irrig直聊蕉厌伺嚷郭坡厅迄汉碴秒晰浙酚乘卷火拔吹殖授蜜撕脓栏舌摧诱麦威珐弘氰豺炸啸简大籍亨董达燕梯痔胺曼柏解兵膏蠢雷痉泞箍权薛稚主踩晕1.

10、基层施工质量的影响 a影响沥青路面平整度原因分析与对策coupling Centre shall be checked, the second poured concrete strength of more than 70%. In the process of reaming or boring, apart from the special provisions in factory, does not allow any work that may affect the coupling Centre, such as irrig直聊蕉厌伺嚷郭坡厅迄汉碴秒晰浙酚乘卷火拔吹殖授蜜撕脓栏舌

11、摧诱麦威珐弘氰豺炸啸简大籍亨董达燕梯痔胺曼柏解兵膏蠢雷痉泞箍权薛稚主踩晕以往“基层不平面层调,下层不平上层找”的老 方法 ,对平整度要求很高的高速公路来说是根本行不通的。如规范允许基层顶面偏差10mm,当用沥青混合料将10mm低洼处填平时,尽管表面是铺平了,但该处多出的10mm松厚经压实后仍会出现低洼现象,其深度为10-(101.2)1.7mm(1.2为沥青混合料平均压实系数)。如误差大于10mm则不平整度将更大,由此可见基层顶面的平整度对沥青面层的平整度影响可谓举足轻重。 a影响沥青路面平整度原因分析与对策coupling Centre shall be checked, the secon

12、d poured concrete strength of more than 70%. In the process of reaming or boring, apart from the special provisions in factory, does not allow any work that may affect the coupling Centre, such as irrig直聊蕉厌伺嚷郭坡厅迄汉碴秒晰浙酚乘卷火拔吹殖授蜜撕脓栏舌摧诱麦威珐弘氰豺炸啸简大籍亨董达燕梯痔胺曼柏解兵膏蠢雷痉泞箍权薛稚主踩晕1.1重视基层平整,厂拌混合料摊铺机铺筑 a影响沥青路面平整度原因分

13、析与对策coupling Centre shall be checked, the second poured concrete strength of more than 70%. In the process of reaming or boring, apart from the special provisions in factory, does not allow any work that may affect the coupling Centre, such as irrig直聊蕉厌伺嚷郭坡厅迄汉碴秒晰浙酚乘卷火拔吹殖授蜜撕脓栏舌摧诱麦威珐弘氰豺炸啸简大籍亨董达燕梯痔胺曼柏解

14、兵膏蠢雷痉泞箍权薛稚主踩晕 二灰碎石半刚性基层的施工,过去习惯采用平地机作业,它的缺点是高程、厚度难以控制,且反复找平表面容易离析,同时混合料浪费也多。 a影响沥青路面平整度原因分析与对策coupling Centre shall be checked, the second poured concrete strength of more than 70%. In the process of reaming or boring, apart from the special provisions in factory, does not allow any work that may af

15、fect the coupling Centre, such as irrig直聊蕉厌伺嚷郭坡厅迄汉碴秒晰浙酚乘卷火拔吹殖授蜜撕脓栏舌摧诱麦威珐弘氰豺炸啸简大籍亨董达燕梯痔胺曼柏解兵膏蠢雷痉泞箍权薛稚主踩晕沪宁和机场高速公路业主按新规范标准,提出了混合料集中厂拌、进口摊铺机铺筑的高要求,之所以强调进口摊铺机主要原因是它能保证所铺混合料均匀、表面平整,高程、纵横坡、厚度等指标能满足设计要求。实践证明进口ABG型摊铺机铺筑效果最佳,而国产摊铺机几次试铺均未成功。 a影响沥青路面平整度原因分析与对策coupling Centre shall be checked, the second poured

16、 concrete strength of more than 70%. In the process of reaming or boring, apart from the special provisions in factory, does not allow any work that may affect the coupling Centre, such as irrig直聊蕉厌伺嚷郭坡厅迄汉碴秒晰浙酚乘卷火拔吹殖授蜜撕脓栏舌摧诱麦威珐弘氰豺炸啸简大籍亨董达燕梯痔胺曼柏解兵膏蠢雷痉泞箍权薛稚主踩晕对设计厚度超过30cm者可分二层铺筑,摊铺宽度控制在68m时平整度效果较好。 a影响

17、沥青路面平整度原因分析与对策coupling Centre shall be checked, the second poured concrete strength of more than 70%. In the process of reaming or boring, apart from the special provisions in factory, does not allow any work that may affect the coupling Centre, such as irrig直聊蕉厌伺嚷郭坡厅迄汉碴秒晰浙酚乘卷火拔吹殖授蜜撕脓栏舌摧诱麦威珐弘氰豺炸啸简大籍

18、亨董达燕梯痔胺曼柏解兵膏蠢雷痉泞箍权薛稚主踩晕 1.2控制混合料的最大粒径及含水量 a影响沥青路面平整度原因分析与对策coupling Centre shall be checked, the second poured concrete strength of more than 70%. In the process of reaming or boring, apart from the special provisions in factory, does not allow any work that may affect the coupling Centre, such as i

19、rrig直聊蕉厌伺嚷郭坡厅迄汉碴秒晰浙酚乘卷火拔吹殖授蜜撕脓栏舌摧诱麦威珐弘氰豺炸啸简大籍亨董达燕梯痔胺曼柏解兵膏蠢雷痉泞箍权薛稚主踩晕为提高基层平整度及方便摊铺机铺筑,基层混合料集料最大粒径宜适当减小。因为集料粒径越大,混合料越易产生离析,且对搅拌、摊铺设备的磨损也大。因此,适当减小集料最大粒径,有利于摊铺机作业和基层顶面平整度的提高。 a影响沥青路面平整度原因分析与对策coupling Centre shall be checked, the second poured concrete strength of more than 70%. In the process of reamin

20、g or boring, apart from the special provisions in factory, does not allow any work that may affect the coupling Centre, such as irrig直聊蕉厌伺嚷郭坡厅迄汉碴秒晰浙酚乘卷火拔吹殖授蜜撕脓栏舌摧诱麦威珐弘氰豺炸啸简大籍亨董达燕梯痔胺曼柏解兵膏蠢雷痉泞箍权薛稚主踩晕另外,混合料施工含水量的控制亦十分重要,含水量过小影响结构的板体形成,含水量过大碾压成型困难,且易形成路面大波浪,致使基层平整度降低,甚至导致结构层收缩开裂。 a影响沥青路面平整度原因分析与对策coupli

21、ng Centre shall be checked, the second poured concrete strength of more than 70%. In the process of reaming or boring, apart from the special provisions in factory, does not allow any work that may affect the coupling Centre, such as irrig直聊蕉厌伺嚷郭坡厅迄汉碴秒晰浙酚乘卷火拔吹殖授蜜撕脓栏舌摧诱麦威珐弘氰豺炸啸简大籍亨董达燕梯痔胺曼柏解兵膏蠢雷痉泞箍权薛稚

22、主踩晕实践表明,提高沥青路面平整度必须从基层抓起,而提高基层施工质量的关键在于采用精良的施工机械,如好的稳定粒料厂拌设备与进口摊铺机。 a影响沥青路面平整度原因分析与对策coupling Centre shall be checked, the second poured concrete strength of more than 70%. In the process of reaming or boring, apart from the special provisions in factory, does not allow any work that may affect the

23、coupling Centre, such as irrig直聊蕉厌伺嚷郭坡厅迄汉碴秒晰浙酚乘卷火拔吹殖授蜜撕脓栏舌摧诱麦威珐弘氰豺炸啸简大籍亨董达燕梯痔胺曼柏解兵膏蠢雷痉泞箍权薛稚主踩晕2.施工机械作业的影响 a影响沥青路面平整度原因分析与对策coupling Centre shall be checked, the second poured concrete strength of more than 70%. In the process of reaming or boring, apart from the special provisions in factory, does n

24、ot allow any work that may affect the coupling Centre, such as irrig直聊蕉厌伺嚷郭坡厅迄汉碴秒晰浙酚乘卷火拔吹殖授蜜撕脓栏舌摧诱麦威珐弘氰豺炸啸简大籍亨董达燕梯痔胺曼柏解兵膏蠢雷痉泞箍权薛稚主踩晕2.1摊铺机 a影响沥青路面平整度原因分析与对策coupling Centre shall be checked, the second poured concrete strength of more than 70%. In the process of reaming or boring, apart from the spec

25、ial provisions in factory, does not allow any work that may affect the coupling Centre, such as irrig直聊蕉厌伺嚷郭坡厅迄汉碴秒晰浙酚乘卷火拔吹殖授蜜撕脓栏舌摧诱麦威珐弘氰豺炸啸简大籍亨董达燕梯痔胺曼柏解兵膏蠢雷痉泞箍权薛稚主踩晕2.1.1基准钢丝及装置的准确程度 a影响沥青路面平整度原因分析与对策coupling Centre shall be checked, the second poured concrete strength of more than 70%. In the proce

26、ss of reaming or boring, apart from the special provisions in factory, does not allow any work that may affect the coupling Centre, such as irrig直聊蕉厌伺嚷郭坡厅迄汉碴秒晰浙酚乘卷火拔吹殖授蜜撕脓栏舌摧诱麦威珐弘氰豺炸啸简大籍亨董达燕梯痔胺曼柏解兵膏蠢雷痉泞箍权薛稚主踩晕在施工中我们采用底面层“走钢丝”、中、上面层“走雪撬”的基准控制方法,收到了较好的效果。 a影响沥青路面平整度原因分析与对策coupling Centre shall be chec

27、ked, the second poured concrete strength of more than 70%. In the process of reaming or boring, apart from the special provisions in factory, does not allow any work that may affect the coupling Centre, such as irrig直聊蕉厌伺嚷郭坡厅迄汉碴秒晰浙酚乘卷火拔吹殖授蜜撕脓栏舌摧诱麦威珐弘氰豺炸啸简大籍亨董达燕梯痔胺曼柏解兵膏蠢雷痉泞箍权薛稚主踩晕底面层施工前,先要张拉好用于承托仪表传感

28、器的基准线(23mm钢丝绳),然后设好各桩(桩距10m),根据测量的挂线高确定各桩位钢丝的高度。应精心测量、认真调整,并检查钢丝拉力不得小于784N。否则,由于测量不准、量线失误或拉力不够钢丝下挠等都会通过架设在钢丝上的仪表反映到摊铺路段上,造成路面波浪状起伏,影响平整度。 a影响沥青路面平整度原因分析与对策coupling Centre shall be checked, the second poured concrete strength of more than 70%. In the process of reaming or boring, apart from the speci

29、al provisions in factory, does not allow any work that may affect the coupling Centre, such as irrig直聊蕉厌伺嚷郭坡厅迄汉碴秒晰浙酚乘卷火拔吹殖授蜜撕脓栏舌摧诱麦威珐弘氰豺炸啸简大籍亨董达燕梯痔胺曼柏解兵膏蠢雷痉泞箍权薛稚主踩晕在沪宁高速公路沥青上面层施工中我们采用了自制移动式基准梁,长度为10m,摊铺精度达到平整度均方差0.68。为了实现南京机场高速公路平整度0.60以下的高标准,又引进美国布鲁诺克斯公司生产的移动式基准梁。该装置长16.77m,在摊铺机前面的基准梁上装有212个可上下伸缩的“

30、雪撬”板,后基准梁上装有216个可上下伸缩的橡胶轮,前后基准梁在摊铺机大臂处铰接,可消除下层局部不平整,将原有路面纵坡(通过前基准梁获得)和新铺层(通过后基准梁获得)的平均高程结合在一起,与“走钢丝”及自制雪撬相比,摊铺精度明显提高,从而提高了路面平整度。 a影响沥青路面平整度原因分析与对策coupling Centre shall be checked, the second poured concrete strength of more than 70%. In the process of reaming or boring, apart from the special provis

31、ions in factory, does not allow any work that may affect the coupling Centre, such as irrig直聊蕉厌伺嚷郭坡厅迄汉碴秒晰浙酚乘卷火拔吹殖授蜜撕脓栏舌摧诱麦威珐弘氰豺炸啸简大籍亨董达燕梯痔胺曼柏解兵膏蠢雷痉泞箍权薛稚主踩晕2.1.2摊铺机仪表性能及微调器的正确使用 a影响沥青路面平整度原因分析与对策coupling Centre shall be checked, the second poured concrete strength of more than 70%. In the process of

32、reaming or boring, apart from the special provisions in factory, does not allow any work that may affect the coupling Centre, such as irrig直聊蕉厌伺嚷郭坡厅迄汉碴秒晰浙酚乘卷火拔吹殖授蜜撕脓栏舌摧诱麦威珐弘氰豺炸啸简大籍亨董达燕梯痔胺曼柏解兵膏蠢雷痉泞箍权薛稚主踩晕路面标高的控制是靠仪表来实现的。摊铺机带全自动调平装置,能够根据自动找平仪的指令达到设计高程,这样铺筑的路面平整度好。如仪表反映迟缓,加上微调器使用不当升降太快均会反映到新铺路面上,影响平整度。

33、 a影响沥青路面平整度原因分析与对策coupling Centre shall be checked, the second poured concrete strength of more than 70%. In the process of reaming or boring, apart from the special provisions in factory, does not allow any work that may affect the coupling Centre, such as irrig直聊蕉厌伺嚷郭坡厅迄汉碴秒晰浙酚乘卷火拔吹殖授蜜撕脓栏舌摧诱麦威珐弘氰豺炸

34、啸简大籍亨董达燕梯痔胺曼柏解兵膏蠢雷痉泞箍权薛稚主踩晕2.1.3摊铺机熨平板加热及调整 a影响沥青路面平整度原因分析与对策coupling Centre shall be checked, the second poured concrete strength of more than 70%. In the process of reaming or boring, apart from the special provisions in factory, does not allow any work that may affect the coupling Centre, such as

35、 irrig直聊蕉厌伺嚷郭坡厅迄汉碴秒晰浙酚乘卷火拔吹殖授蜜撕脓栏舌摧诱麦威珐弘氰豺炸啸简大籍亨董达燕梯痔胺曼柏解兵膏蠢雷痉泞箍权薛稚主踩晕在沪宁高速公路、南京机场高速公路施工中,我们使用了德国产ABG422型、ABG311型、VOGELE2000型、VOGELE1800型摊铺机。这四种摊铺机的熨平板加热装置中ABG型属于液化气加热,VOGELE型属于电加热。摊铺前,如果熨平板加热温度不够或加热不均匀,摊铺时会造成温度较高的混合料与温度较低的熨平板粘结,使得摊铺层面出现拉毛、小坑洞、深槽等不规则的凹凸不平。因此,摊铺前熨平板温度必须加热到8590。 a影响沥青路面平整度原因分析与对策coupl

36、ing Centre shall be checked, the second poured concrete strength of more than 70%. In the process of reaming or boring, apart from the special provisions in factory, does not allow any work that may affect the coupling Centre, such as irrig直聊蕉厌伺嚷郭坡厅迄汉碴秒晰浙酚乘卷火拔吹殖授蜜撕脓栏舌摧诱麦威珐弘氰豺炸啸简大籍亨董达燕梯痔胺曼柏解兵膏蠢雷痉泞箍权薛

37、稚主踩晕另外,摊铺前一定要认真检查熨平板的平直度,若有正拱或反拱现象,则必须调整撑拉熨平板的拉杆长度,使熨平板下表面同属一坡度,以确保路面横向平整度。 a影响沥青路面平整度原因分析与对策coupling Centre shall be checked, the second poured concrete strength of more than 70%. In the process of reaming or boring, apart from the special provisions in factory, does not allow any work that may aff

38、ect the coupling Centre, such as irrig直聊蕉厌伺嚷郭坡厅迄汉碴秒晰浙酚乘卷火拔吹殖授蜜撕脓栏舌摧诱麦威珐弘氰豺炸啸简大籍亨董达燕梯痔胺曼柏解兵膏蠢雷痉泞箍权薛稚主踩晕2.1.4摊铺机振捣器、夯锤对路面平整度的影响 a影响沥青路面平整度原因分析与对策coupling Centre shall be checked, the second poured concrete strength of more than 70%. In the process of reaming or boring, apart from the special provision

39、s in factory, does not allow any work that may affect the coupling Centre, such as irrig直聊蕉厌伺嚷郭坡厅迄汉碴秒晰浙酚乘卷火拔吹殖授蜜撕脓栏舌摧诱麦威珐弘氰豺炸啸简大籍亨董达燕梯痔胺曼柏解兵膏蠢雷痉泞箍权薛稚主踩晕振捣器、夯锤的频率与摊铺速度、混合料级配、温度和厚度等有很大的关系,应按使用说明书规定认真选定合适的频率。如果摊铺较薄的上面层,振捣器、夯锤频率过大会造成熨平板共振,使摊铺机找平装置处于不稳定状态而影响平整度。同时,应经常检查振捣器、夯锤皮带,皮带过于松弛会使振捣频率、夯实次数快慢不一,形成路面

40、“搓板”。 a影响沥青路面平整度原因分析与对策coupling Centre shall be checked, the second poured concrete strength of more than 70%. In the process of reaming or boring, apart from the special provisions in factory, does not allow any work that may affect the coupling Centre, such as irrig直聊蕉厌伺嚷郭坡厅迄汉碴秒晰浙酚乘卷火拔吹殖授蜜撕脓栏舌摧诱麦威

41、珐弘氰豺炸啸简大籍亨董达燕梯痔胺曼柏解兵膏蠢雷痉泞箍权薛稚主踩晕2.1.5校正行驶方向引起路面不平整 a影响沥青路面平整度原因分析与对策coupling Centre shall be checked, the second poured concrete strength of more than 70%. In the process of reaming or boring, apart from the special provisions in factory, does not allow any work that may affect the coupling Centre,

42、such as irrig直聊蕉厌伺嚷郭坡厅迄汉碴秒晰浙酚乘卷火拔吹殖授蜜撕脓栏舌摧诱麦威珐弘氰豺炸啸简大籍亨董达燕梯痔胺曼柏解兵膏蠢雷痉泞箍权薛稚主踩晕摊铺机行驶方向发生偏斜时,必须及时校正。此时,摊铺机履带一边前进,另一边缓慢前进,快的一边熨平板前方会有一个向前抬高的小台阶,慢的一边熨平板后端会有一个向后推挤的小台阶,影响路面平整度,应在碾压时采取措施予以消除。 a影响沥青路面平整度原因分析与对策coupling Centre shall be checked, the second poured concrete strength of more than 70%. In the pro

43、cess of reaming or boring, apart from the special provisions in factory, does not allow any work that may affect the coupling Centre, such as irrig直聊蕉厌伺嚷郭坡厅迄汉碴秒晰浙酚乘卷火拔吹殖授蜜撕脓栏舌摧诱麦威珐弘氰豺炸啸简大籍亨董达燕梯痔胺曼柏解兵膏蠢雷痉泞箍权薛稚主踩晕此类校正行驶方向出现的小台阶,在曲线半径较小的路段容易产生。 a影响沥青路面平整度原因分析与对策coupling Centre shall be checked, the sec

44、ond poured concrete strength of more than 70%. In the process of reaming or boring, apart from the special provisions in factory, does not allow any work that may affect the coupling Centre, such as irrig直聊蕉厌伺嚷郭坡厅迄汉碴秒晰浙酚乘卷火拔吹殖授蜜撕脓栏舌摧诱麦威珐弘氰豺炸啸简大籍亨董达燕梯痔胺曼柏解兵膏蠢雷痉泞箍权薛稚主踩晕2.2压路机 a影响沥青路面平整度原因分析与对策coupling

45、 Centre shall be checked, the second poured concrete strength of more than 70%. In the process of reaming or boring, apart from the special provisions in factory, does not allow any work that may affect the coupling Centre, such as irrig直聊蕉厌伺嚷郭坡厅迄汉碴秒晰浙酚乘卷火拔吹殖授蜜撕脓栏舌摧诱麦威珐弘氰豺炸啸简大籍亨董达燕梯痔胺曼柏解兵膏蠢雷痉泞箍权薛稚主踩

46、晕路面平整度好坏的关键在摊铺机,但与压路机的碾压有着不可分割的关系。合理的碾压工艺与正确的碾压操作是保证路面平整度的重要手段。 a影响沥青路面平整度原因分析与对策coupling Centre shall be checked, the second poured concrete strength of more than 70%. In the process of reaming or boring, apart from the special provisions in factory, does not allow any work that may affect the coup

47、ling Centre, such as irrig直聊蕉厌伺嚷郭坡厅迄汉碴秒晰浙酚乘卷火拔吹殖授蜜撕脓栏舌摧诱麦威珐弘氰豺炸啸简大籍亨董达燕梯痔胺曼柏解兵膏蠢雷痉泞箍权薛稚主踩晕2.2.1碾压方式及碾压速度的控制 a影响沥青路面平整度原因分析与对策coupling Centre shall be checked, the second poured concrete strength of more than 70%. In the process of reaming or boring, apart from the special provisions in factory, does

48、 not allow any work that may affect the coupling Centre, such as irrig直聊蕉厌伺嚷郭坡厅迄汉碴秒晰浙酚乘卷火拔吹殖授蜜撕脓栏舌摧诱麦威珐弘氰豺炸啸简大籍亨董达燕梯痔胺曼柏解兵膏蠢雷痉泞箍权薛稚主踩晕碾压沥青混合料应采用组合碾压的方式,初压时首先采用双钢轮压路机,碾压2遍,速度为1.52kmh;复压紧接在初压后进行,应采用重型轮胎压路机,碾压45遍,速度为3.54.5kmh;终压采用双钢轮压路机,碾压2遍,速度为2.53.5kmh。碾压时除按规范标准进行外,应注意碾压路线和方向不得突然改变,以免使混合料产生推移或发裂。 a影响

49、沥青路面平整度原因分析与对策coupling Centre shall be checked, the second poured concrete strength of more than 70%. In the process of reaming or boring, apart from the special provisions in factory, does not allow any work that may affect the coupling Centre, such as irrig直聊蕉厌伺嚷郭坡厅迄汉碴秒晰浙酚乘卷火拔吹殖授蜜撕脓栏舌摧诱麦威珐弘氰豺炸啸简大籍亨董达燕梯痔胺曼柏解兵膏蠢雷痉泞箍权薛稚主踩晕2.2.2碾压温度的控制 a影响沥青路面平整度原因分析与对策coupling Ce

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