《路面沥呢青砼中粒式试验段总结.doc》由会员分享，可在线阅读，更多相关《路面沥呢青砼中粒式试验段总结.doc（13页珍藏版）》请在三一办公上搜索。
1、舟山金塘岛互通至大浦口疏港公路1合同段沥青混凝土下面层试铺段总结报告中铁隧道集团有限公司舟山金塘岛互通至大浦口疏港公路1合同段项目部二一一年十月十六日舟山金塘岛互通至大浦口疏港公路1合同段沥青混凝土下面层试铺段总结报告2011年10月3日上午9：30，舟山金塘岛互通至大浦口疏港公路1标段路面（起讫桩号K2+358.52K2+800）单幅净长度441.48米进行了下面层中粒式沥青砼（AC-20C型）的试铺，试铺是在确定生产配合比并在10月2日经拌和楼试拌，各项技术指标均满足规范要求，下面层各原材料检验合格、各项准备工作就绪的情况下进行的，下面就下面层试铺段施工过程中主要施工组织、质检及一些问题总
2、结如下：一、试铺路段情况：试验段桩号沥港至大浦口右幅K2+358.52K2+800，全长441.48m天气情况晴，风力34级，最高温度25，最低温度19，湿度64%施工单位 中铁隧道集团有限公司监理单位 浙江公路水运工程监理有限公司二、配合比设计情况石料采用舟山金塘小里岙采石厂的石灰岩，矿粉采用长兴生产的矿粉，沥青采用镇海炼化公司生产的A-70#型道路石油沥青。1#料：2#料：3#料：矿粉= 29：24：45：2.0，最佳油石比5.1。各种材料性能检测结果，矿料级配组成，最佳沥青用量（油石比）的沥青混合料技术性质试验结果见下表：材料名称产地检测指标A-70#型道路石油沥青镇海炼化针入度延度软化
3、点6914248材料名称产地检测指标矿粉长兴0.3mm（%）0.15mm（%）0.075mm（%）亲水系数（%）塑性指数（%）表观密度10010099.00.712.42.781材料 名称产地检测指标砂当量（%）针片状（%）粘附性 等级表观相对密度毛体积相对密度吸水率（%）压碎值（%）1#料小里岙采石场/14.942.6442.5651.1621.72#料/14.1/2.6662.5881.13/3#料62.1/2.6042.497/集料、矿粉筛分结果材料名称筛孔尺寸（mm）31.526.5191613.29.54.752.361.180.60.30.150.075通过百分率（%）1#料100
4、10088.964.324.31.20.20.20.20.20.20.20.22#料10010010010010057.11.10.30.20.20.20.20.23#料10010010010010099.885.651.734.723.614.612.08.8矿粉10010010010010010010010010010010010099.0矿料级配组成矿料比例（%）通过下列筛孔百分率（%）31.526.5191613.29.54.752.361.180.60.30.150.0751#料2910010088.964.324.31.20.20.20.20.20.20.20.22#料241001
5、0010010010057.11.10.30.20.20.20.20.23#料4510010010010010099.885.651.734.723.614.612.08.8矿粉210010010010010010010010010010010010099.0混合料10010096.889.678.061.040.825.417.712.78.77.56.0规范上限1001001009082704536282216127规范中值1001009582726039.52922161185规范下限1001009074625034221610643AC-20C下面层最佳油石比（5.1%）马歇尔试验结果
6、密度 （g/cm3）理论密度 （g/cm3）空隙率 （%）粒料间空隙率（%）饱和度 （%）稳定度（KN）流值（0.01cm）马歇尔模数（KN/mm）2.2882.4054.914.466.214.233.8736.77三、机械设备及人员组成1、使用主要机械设备和数量序号部门机械名称规格型号数量性能1前场摊铺机1#ABG4231良好2摊铺机2#ABG4231良好3钢轮振动压路机26t2良好4双钢轮振动压路机150PH1良好5胶轮压路机98kW1良好6洒水车8000L1良好7切缝机1良好8加油车2T1良好9振动夯板11kw2良好10运输运料车东风30T12良好11后场沥青拌合楼120t/h1良好1
7、2ZL50装载机柳工2良好1475kw发电机1良好2、人员组成情况及分工情况积称姓名负责事项备注项目常务副经理胡如盛沥青面层施工总负责总工程师吴明德全面负责沥青面层施工技术副总工程师韩兴旺负责沥青面层施工技术工程部长杨 瑞负责沥青面层施工技术交底现场施工主管梁波涛现场负责沥青面层调度、材料安排现场技术田涛负责现场施工技术指导现场技术潘中一负责混合料摊铺、碾压试验工程师李喜扬负责摊铺现场试验实验员陈跃进负责搅拌站混合料拌合控制实验员余树庆试验室试验机电组郑守升负责沥青面层机械、设备维修安排物资组申建平负责沥青面层所需物资安质张 超负责沥青面层质检测量主管卯卫平负责沥青面层测量控制测量曾斌沥青面层
8、测量控制作业工人8人负责混合料离析等处理安全管理网络图：安全管理网络图安全总负责：胡如盛 专职安全员：杨瑞 前 场李喜扬后 场陈跃进工程部田涛试验室余树庆机 务潘中一运 输王富宽四、沥青混合料拌和1、拌和机的拌和方式我标段采用间歇式沥青拌和楼，10月3上午7：10开机，16：35结束，共生产混合料490吨，用掉沥青25吨，用掉矿粉9.8吨。本次拌和采用的主要温度参数为：沥青加热温度为160，矿料加热温度为190。拌和时间参数为：拌和总时间50S左右，其中干拌5S，湿拌35S。拌和顺序为：二次筛分热料仓进料添加矿粉添加沥青，前15拌采用每拌2.0-2.5t，后面采用每拌3.0t。大面积施工时，拌
9、和楼的生产配合比由中心试验室通过部门联系单提供，拌和楼操作人员根据石料的干湿程度，天气冷暖，运输距离的远近 ，和沥青混合料的设定的拌和温度，来调整确定拌和机的生产能力,生产能力最大为3t/拌。试铺段总量校核沥青用量、矿粉用量、石料用量及路面厚度等均满足要求。2、验证沥青混合料的配合比项目部于10月2日进行了下面层试拌，拌和楼运行状况良好、沥青混合料各项技术指标均符合规范要求。五、沥青混合料运输和摊铺装料时运输车辆排队等候在贮料仓下，由专人在车厢底板及边板用高压喷雾器喷洒油水混合物（植物油：水=1：3），放料到储料仓中，料车驾驶员根据放料人员的提示，按前、后、中缓慢移动，二次作业的方法进行装料，
10、不得装料太满外溢，有效地防止了前、中、后三次装料堆高交叉部产生严重离析现象，车辆采用篷布覆盖沥青混合料，实测出厂温度在150175之间，平均温度161，满足要求。料车到前场后，统一在要求路段上，倒车驶入摊铺现场排队等候摊铺。为避免车辆轮胎污染下封层，车辆在进入试铺段面前安排专人对轮胎进行清理，清理干净后方许倒车进入摊铺现场。车辆卸料倒车时在摊铺机前20cm处停住，卸料时挂空挡，注意不要撞击摊铺机，不要把料卸在摊铺机外面，卸料时统一采用不掀蓬布的方法，实测到场温度在145162之间，平均温度155，满足要求。摊铺机拼装宽度为10.5米，以非接触式浮动梁按双纵向来控制纵坡、横坡、厚度及高程；根据供
11、料等情况，试铺段摊铺速度控制为1.1m/min，振动强度4.0级，振捣强度4.0级；摊铺过程中螺旋布料器均衡地向两侧供料，螺旋布料器的料位应稳定控制在螺旋布料器2/3高度以上，使熨平板挡板前混合料在全宽范围内保持一致，避免摊铺层出现因布料不均产生的离析现象。尽量减少拢料次数，以减少卡车末端离析，实际采用每摊铺3车拢料1次的做法，且拢料料位控制在高位，拢料时摊铺机料斗微微收起。摊铺过程中发现局部拖痕等常见问题及时处理，本次试铺未进行撒料处理。摊铺碾压过程中的控制参数为：熨平板加热不低于80, 预热温度用红外线遥控温度仪测量，本次试验段预热时间约用时 28min ，熨平板温度达 100，也不宜温度
12、过高，以免熨平板受热变形，正式摊铺时，用插入式温度计测量摊铺铺面温度，做好原始记录，控制摊铺温度不低于135，实际试验段摊铺温度在145160之间，平均温度152，满足要求。实际摊铺时间为9:1215：20，平均摊铺速度1.1m/min。六、沥青混合料压实方案碾压组合碾压初压复压终压双钢轮压路机 1台静压2遍胶轮压路机 1台双钢轮压路机 1台振压2遍振压2遍双钢轮压路机 1台2遍试铺桩号（右幅）沥港至大浦口K2+358.52K2+800长 度 (m)441.48在碾压过程中，做到整齐有序，不随意停车，随意加水或在新铺路面上调头等。考虑到边部压实度，边部增加1遍初压和复压。每约30米作为一作业段
13、，初压时振动压路机驱动轮面向摊铺机，初碾压搭接宽度为1/2轮宽，复压时搭接宽度为1/3宽度。控制初压温度介于130160，终压温度介于80110，初压速度控制在1.52Km/h，复压速度控制在3.54.5Km/h，终压速度控制在2.53.5Km/h，设立专人指挥碾压及测温，做好记录。碾压区间分隔处插旗帜以利于区分。设立专人用温度计测量初压、复压、终压温度，做好记录，实测温度为初压温度在137152之间，复压温度在126141之间，终压温度在93114之间，从压实度数据分析得知，采用紧跟慢压、高频低幅的措施是切实可行的。具体采用碾压速度初压为约30m/min，复压约75 m/min，终压约50m
14、/ /min。 对松铺厚度、碾压顺序、碾压遍数、碾压速度及碾压温度等进行了专门检查。施工中树立明显的防护标志牌进行交通封闭。七、面层松铺系数为确保测量数据的准确性,减少测量误差,我们采用水准仪固定不动,平行观测同一位置的原地面读数、松铺读数、压实后读数,经计算得出其相应高程h原、h松、h压 ,以此三组数据计算出该点的松铺系数: h松-h原松铺系数= h压-h原实测松铺系数为1.21（计算见后附表）。八、施工缝处理方法一台摊铺机全宽摊铺，不存在纵向施工缝。横向接缝做成平接缝，切割后确保接缝平整、无污染，侧面涂刷粘层油，在摊铺结束的末端11.5米范围内铺设土工布，以利于接头部位的清理。九、试铺路段
15、各项技术指标检查结果现场渗水、压实度、厚度、平整度等技术指标进行检测，均满足要求，试铺段施工时项目部对拌和楼热料仓集料进行了再次筛分，筛分结果与生产配合比基本一致（详见下表）。AC-20C下面层试铺马歇尔试验结果密度 （g/cm3）理论密度 （g/cm3）空隙率 （%）粒料间空隙率（%）饱和度 （%）稳定度（KN）流值（0.01cm）油石比马歇尔模数（KN/mm）2.2712.3764.114.872.511.342.65.143.98AC-20C下面层试铺离心式分离矿料筛分试验结果筛孔通过下列筛孔百分率（%）31.526.5191613.29.54.752.361.180.60.30.150
16、.075试铺筛分10010094.682.370.459.640.328.020.415.09.46.15.20.2设计10010010090907482627050453436222816221016612473AC-20C下面层试铺路面实测结果项目要求实测结果代表值或平均值合格率（）马氏压实度（%）9898.6、99.0、98.8、98.5、98.6、98.999.0、98.2、98.3、99.1、98.5、98.898.6100理论压实度（%）9294.4、94.7、94.5、94.3、94.4、94.694.8、94.0、94.1、94.9、94.3、94.594.4100路面空隙率（
17、%）4.06.04.1、4.1、4.1、4.0、4.1、4.14.1100厚度（cm） 77.3、7.5、7.4、7.3、7.2、7.3、7.4、7.1、7.2、7.5、7.1、7.3/100平整度（mm）1.81.2、0.8、1.1、1.00.98100横坡（）0.3+0.1、+0.15、-0.1、+0.12、-0.1、+0.11100宽度（mm）设计11255、11250、11250、11255、11260、11255100十、结论意见通过本次试铺检验结果的分析，无论从中粒式沥青混凝土AC-20C的设计还是从铺后的效果,无论从施工过程中的工艺控制、还是最终的试验检测数据分析来看，应该说完全
18、达到了预期目的，这次试铺是比较成功的，我项目部将在此次试铺总结的基础上,在确定以下正常摊铺的工艺参数后的摊铺过程中不断总结再提高,及时处理施工中出现的问题，对施工检测结果进行动态分析，把中粒式沥青混凝土AC-20C下面层施工做的更好。 1、施工产量及作业长度按拌合楼90120t/h的产量，每天总产量按850t考虑，摊铺速度按1.1m/min，每天摊铺长度按500m计算，摊铺时间约8h，可安排每天早上8:30开始摊铺，下午4:30结束，拌和及摊铺能相匹配。2、后场拌和生产控制参数(1)沥青混合料的配合比:采用比例为1#仓：2#仓：3#仓：矿粉：沥青=29：24：45：2.0：5.1进行大面积施工
19、，大面积施工时通过对混合料性能的检测，通过微调进一步提高沥青混合料的均匀性，同时加强对粉尘除尘量观测及做好对筛网的定期检查，并加强逐盘在线检查，发现问题及时处理。(2)温度控制: 项目沥青加热温度：矿料加热温度：混合料生产温度：温度控制155-165165-195145-165 (3)拌和时间: 总时间T=50s，干拌5s，湿拌35s。 3、前场施工工艺参数(1)松铺系数取用1.21，大面积施工时再测量观察；(2)摊铺、碾压的温度及速度、振级、遍数采用试铺方案碾压组合实施，即摊铺速度1.1 m/min，振动及振捣4级，初压为1台双钢轮压路机静压2遍；复压采用胶轮压路机2遍、双钢轮压路机振压2遍
20、，共4遍；终压1台双钢轮压路机静压2遍。控制初压温度宜在140160之间，复压温度在125150之间，终压温度在90125为宜，初压速度控制在1.52Km/h，复压速度控制在3.54.5Km/h，终压速度控制在2.53.5Km/h。(3)压实工艺:根据路面空隙率情况，说明压实工艺采用得当，根据马氏及理论压实度、路面空隙率等综合比较，有利于碾压时间、温度控制等来看，采用以上碾压组合进行施工是可行的，大面积施工时，必须确保紧跟慢压、高频低幅，尽量采用高温碾压。 (4)下封层情况：必须提前做好下封层清理工作及报验等工作，发现问题及时处理，同时加强成品保护工作及减少对其他工程的污染。4、正式施工中需改
21、进的若干问题（1）针对本次下面层试铺，摊铺机出现故障问题，将加强施工前机械设备检查，确保机械设备的正常运转。（2）下面层由于厚度较小，铺面温度散失较快，因此初压时必须确保紧跟碾压，严格控制钢轮的喷水量，同时胶轮的碾压段落也不宜过长，一般按30m作为一个碾压段，确保碾压温度不低于135（3）由于沥青粘度较大，应严格控制人员在铺面踩踏，特别不能有泥土带入，以免碾压后粘轮影响铺面效果，同时提高对皮轮隔离剂的涂刷频率（油与水的混合液），避免粘轮现象的发生。（4）加强成品保护，同时对喷洒粘层的段落做好交通封闭工作，避免泥土污染。发现有污染的段落及时清理到位，注意汽车车轮对粘层油的污染。（5）加强对薄弱部
22、位的质量控制，两侧及搭接缝处增加碾压遍数。我们必须积极总结，因为后面还有更加艰巨的任务，大面积的摊铺任务马上开始。天气渐冷，时间紧、任务重。项目全体人员，自加压力、群策群力、倒排工期、精心组织、科学施工，有信心、有能力完成上级下达的节点工期进度计划。English is the most widely spoken language in the history of our planet, used in some way by at least one out of every seven human beings around the globe. Half of the worlds
23、books are written in English, and the majority of international telephone calls are made in English. English is the language of over sixty percent of the worlds radio programs. More than seventy percent of international mail is written and addressed in English, and eighty percent of all computer tex
24、t is stored in English. English has acquired the largest vocabulary of all the worlds languages, perhaps as many as two million words, and has generated one of the noblest bodies of literature in the annals of the human it is now time to face the fact that English is a crazy language - the most luna
25、tic and loopy and of all languages. In the crazy English language, the blackbird hen is brown, blackboards can be green or blue, and blackberries are green and then red before they are ripe. Even if blackberries were really black and blueberries really blue, what are strawberries, cranberries, huckl
26、eberries, raspberries, and gooseberries supposed to look add to this insanity there is no butter in buttermilk, no egg in eggplant, no grape in grapefruit, no bread in shortbread, neither worms nor wood in wormwood, neither mush nor room in mushroom, neither pine nor apple in pineapple, neither peas
27、 nor nuts in peanuts, and no ham in a hamburger. (In fact, if somebody invented a sandwich consisting of a ham patty in a bun, we would have a hard time finding a name for it.)To make matters worse, English muffins werent invented in England, fries in France, or Danish pastries in Denmark. And we di
28、scover even more culinary madness in the that sweetmeat is made from fruit, while sweetbread, which isnt sweet, is made from this unreliable English tongue, greyhounds arent always grey (or gray); panda bears and koala bears arent bears (theyre marsupials); a woodchuck is a groundhog, which is not a
29、 hog; a horned toad is a lizard; glowworms are fireflies, but fireflies are not flies (theyre beetles); ladybugs and lightning bugs are also beetles (and to, a significant proportion of ladybugs must be male); a guinea pig is neither a pig nor from Guinea (its a South American rodent); and a titmous
30、e is neither is like the air we breathe. Its invisible, inescapable, indispensable, and we take it for granted. But, when we take the time to step back and listen to the sounds that escape from the holes in peoples faces and to ex- the paradoxes and vagaries of English, we find that hot dogs can be
31、cold, darkrooms can be lit, homework can be done in school, nightmares can take place in broad daylight while morning sickness and daydreaming can take place at night, tomboys are girls and midwives can be men, hours - especially happy hours and rush hours - often last longer than sixty minutes, qui
32、ck- sand works very slowly, boxing rings are square, silverware and glasses can be made of plastic and tablecloths of paper, most are dialed by being punched (or pushed?), and most bathrooms dont have any baths in them. In fact, a dog can go to the bathroom under a tree - no bath, no room; its still
33、 going to the bathroom. And doesnt it seem a little bizarre that we go to the bathroom in order to go to the is it that a woman can man a station but as man cant woman one, that a man can father a movement but a woman cant mother one, and that a king rules a kingdom but a queen doesnt rule a? How di
34、d all those Renaissance men reproduce when there dont seem to have been any Renaissance writer is someone who writes, and a stinger is something that stings. But fingers dont grocers dont, haberdashers dont, hammers dont ham, and humdingers dont the plural of tooth is teeth , shouldnt the plural of
35、booth be ? One goose, two geese - so one moose, two One index, two indices - one Kleenex, two If people ring a bell today and rang a bell yesterday, why dont we say that they a ball? If they wrote a letter, perhaps they also their tongue. If the teacher taught, why isnt it also true that the preache
36、r? Why is it that the sun shone yesterday while I shined my shoes, that I treaded water and then trod on the beach, and that I flew out to see a World Series game in which my favorite player flied we conceive a conception and receive at a reception, why dont we grieve a and believe a? If a horsehair
37、 mat is made from the hair of horses and a camels hair brush from the hair of camels, from what is a mohair coat made? If adults commit adultery, do infants commit infantry? If olive oil is made from olives, what do they make baby oil from? If a vegetarian eats vegetables, what does a humanitarian e
38、at? (And Im beginning to worry about those authoritarians.)And if pro and con are opposites, is congress the opposite of you have to believe that all English speakers should be committed to an asylum for the verbally insane. In what other language do people drive in a parkway and park in a driveway?
39、 In what other language do people recite at a play and play at a recital? In what other language do privates eat in the general mess and generals eat in the private mess? In what other language do people ship by truck and send cargo by ship? In what other language can your nose run and your feet can
40、 a slim chance and a fat chance be the same and a bad licking and a good licking be the same, while a wise man and a wise guy are opposites? How can sharp speech and blunt speech be the same and quite a lot and quite a few the same, while overlook and oversee are opposites? How can the weather be ho
41、t as hell one day and cold as hell the next? How can the expressions Whats going on? and Whats coming off? mean exactly the samton and unbutton and tie and untie are opposites, why are loosen and unloosen and ravel and unravel he same? If bad is the opposite of good, hard the opposite of soft, and u
42、p the opposite of down, why are badly and goodly, hardly and softy, and upright and downright not opposing pairs? If harmless actions are the opposite of harmful why are shameful and shameless behavior the same and pricey objects less expensive than priceless appropriate and inappropriate remarks an
43、d passable and impassable mountain trails are opposites, why are flammable and inflammable materials, heritable and inheritable property, and passive and impassive people the same and valuable objects less treasured than invaluable ones? If uplift is the same as lift up, why are upset and set up opposite in meaning? Why are pertinent and impertinent, canny and uncanny, and famous and infamous neither opposites nor the same? How can raise and raze and reckless and be opposites when each pair cont
