接缝修补
接缝是水泥凝土路面板块的薄弱部位，也是路面l修的重点，填缝材料一般?span style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; line-height: 28.5px; font-family: Calibri;">3-5q左叛_应更换一ơ，避免填缝材料老化后，使缝中Ş成空隙，因而惔?砂、石霄等杂物侵入Q成为板块膨胀时的障碍Q挤入的物引h块边胀裂，且雨雪水便能沿此I隙渗入Q损宛_层和垫层而Ş成孔z，造成板块的变形，唧惔直至损害?/span>
更换填缝料宜在当地气温较低的季节q行Q这时纵、横接缝开口大Q便于清理缝隙，灌缝前先带水?span style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; line-height: 28.5px; font-family: Calibri;">(锯厚?span style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; line-height: 28.5px; font-family: Calibri;">5cm)U|~，深度?span style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; line-height: 28.5px; font-family: Calibri;">4公分Q以减少锯片损耗，后?span style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; line-height: 28.5px; font-family: Calibri;">3?span style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; line-height: 28.5px; font-family: Calibri;">5天，或缝内完全干燥时Q不带水套锯Q深度达4.5-5公分Qƈ用空压机吹干净~内土。缝的下部可?span style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; line-height: 28.5px; font-family: Calibri;">15-20cm高的 泡沫塑料嵌条Q既能减填~料用量Q又便于使今后清~，熬制好的（温度控制?span style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; line-height: 28.5px; font-family: Calibri;">130-140℃）填缝料用漏勺灌进已吹q净的纵横缝内。通过成功试验Q我们一改过L~上多余填缝料抢掉的传统做法。其优点Q一是g长填~料的用寿命（先老化~上多余的填~料Q再老化~内的）Q二是I补了人工灌缝施工中的?I三是解除了填~料热胀L的矛盾，避免了二ơ灌~，四是节省人力、物力、胦力，q确保了工程质量Q灌注聚氨酯Ҏ沥青填~料可提高接~的质量。另一U?Ҏ是采用新型常温填~料Q具体操作同上，只是填缝料在冬春季节旉?span style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; line-height: 28.5px; font-family: Calibri;">5-10mm的膨胀I间Q夏春季节施工时应饱满?/span>
裂缝修补
1Q、压注灌法
a、由于水泥水化作用，混凝土切压缝不及时及路基强度不Q不均匀{诸多原因，会造成路面板块Q纵横间交叉裂缝Q板角断裂，|裂Q龟裂等裂缝cL坏?/span>
b、对宽度?span style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; line-height: 28.5px; font-family: Calibri;">0.5mm以下的非扩展性的表面裂缝Q可采用压注灌浆法?/span>
用空压机清除~内杂物Q每?span style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; line-height: 28.5px; font-family: Calibri;">50公分按置一个灌咀Q用胶带缝口脓，q在灌浆咀及胶带上加封N矌(NQ石?span style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; line-height: 28.5px; font-family: Calibri;">=1Q?span style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; line-height: 28.5px; font-family: Calibri;">2配比加热溶化)最后将环氧溶液压入~内。若条g不具备或裂缝损坏较轻Q也可以直接用填~料缝?/span>
2Q、扩~灌法
局部性裂~且~口较宽Ӟ可采取扩~灌法?/span>
先顺着裂缝缝口扩宽成1.5cm的直角沟槽，槽深Ҏ裂缝深度定Q但最大深度不得超q?span style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; line-height: 28.5px; font-family: Calibri;">2/3板厚。用I压机吹净砼碎屑，q涂抹界面剂或环氧溶Ԍ?入粒径ؓ0.5厘米的清z石屑，聚改性环氧与固化剂按15Q?span style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; line-height: 28.5px; font-family: Calibri;">2配制溶液Q灌入沟槽，用远U外灯加热增?span style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; line-height: 28.5px; font-family: Calibri;">2-3时卛_通R?/span>
3Q、直接灌法
寚w扩展性裂~，可采取直接灌法。先缝内、缝口惔土等杂质清除q净Qƈ用空压机其土吹净Q确认缝内无水且q燥Q缝内及~口先涂一层聚氨脂底胶Q 厚度ؓ0.3u0.1cmQ底胶用量ؓ0.15Q采用聚丙二醇、甲苯二异氰酔R、增塑剂、白炭黑、填充剂{组成的Al分。采用催化剂、固化剂、抗下垂剂组 成的Bl分。用时?span style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; line-height: 28.5px; font-family: Calibri;">A:B=10Q?span style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; line-height: 28.5px; font-family: Calibri;">1的比例配ӞA?span style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; line-height: 28.5px; font-family: Calibri;">B二液切忌较长旉暴露在空气中Q以防自聚。然后将配制好的聚}胉剂灌入缝内，l?span style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; line-height: 28.5px; font-family: Calibri;">4-6时固化 后，卛_通R?/span>
4Q、条带罩面法
对诏I全厚的开裂状裂缝Q宜采取条带|面法进行修补。首先顺裂缝两侧各约20cmQ且q于羃~切 7-10ｃｍ׃条横~，在其内h工凿?span style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; line-height: 28.5px; font-family: Calibri;">7-10cmQ沿裂缝两侧Q０ｃｍQ每隔５Qｃｍ钻一寚w钉长20cm弯钩?span style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; line-height: 28.5px; font-family: Calibri;">7cmQ￠16螺纹钢，孔槽内涂抹界 面剂或环氧树脂溶Ԍ然后筑快硬|hL剂。用切缝机加q~，灌填~料Q最后在裂缝端部路肩处修盲沟以利排水?/span>
5Q、表面龟裂的处理
对于表面裂缝较多及表面龟裂，可把裂缝划ؓ一个施工面Q将其施工面中的裂缝凿成一?span style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; line-height: 28.5px; font-family: Calibri;">7-10cmҎq用I压机吹q净Q然后涂抹一层界面剂或环氧树脂溶 Ԍ填筑T-6胶^|按水泥：砂：矻IJ-6:?span style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; line-height: 28.5px; font-family: Calibri;">=1Q?span style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; line-height: 28.5px; font-family: Calibri;">1.6Q?span style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; line-height: 28.5px; font-family: Calibri;">3.25Q?span style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; line-height: 28.5px; font-family: Calibri;">0.019Q?span style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; line-height: 28.5px; font-family: Calibri;">0.35Q坍落度?span style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; line-height: 28.5px; font-family: Calibri;">1-2ｃｍ配制Q，hL剂，Q小时后卛_ 通R?/span>
孔洞坑槽修补
孔洞、坑槽主要是׃砼材料中夹带木块Q纸张和泥块{杂物所_影响行R的舒适性，先将孔洞凿成深７-Q０ｃｍ形状规则的直壁坑槽，内屑吹干净q用界面剂或环氧树脂溶液涂抹Q然后用配制好的Q－Q胶乛_矻I石?Q?span style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; line-height: 28.5px; font-family: Calibri;">.Qｃｍ）砼填{，hL剂，ȝQｈ后即可通RQ对较深的孔z或q片的小坑槽Q应集中的划分一个施工面q行|面?/span>
板体pv处治
当胀~的上部被硬物阻塞，~两旁的板体因受热胀而把板拱hQ应立即用大切缝机将pv的部分及预留~（Q?span style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; line-height: 28.5px; font-family: Calibri;">-Qｃｍ）切除使相L攑^Qƈ在缝隙内灌填~料?/span>
路面光处理
Z改善水惔D\面的防滑性能Q可采用L机，对磨光的路面Q进行刻槽处理，用电动刻槽机d的槽?span style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; line-height: 28.5px; font-family: Calibri;">3mmQ最大深?span style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; line-height: 28.5px; font-family: Calibri;">10mmQ间?span style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; line-height: 28.5px; font-family: Calibri;">25mm?/span>
错台的修?/span>
当错台高度ؓ0.5-1cmӞ均匀地将高出的部分h工凿下去Qƈ与邻杉KqI当错台高度ؓh>1cmӞ低于下ȝ一侧水泥板凿深5cmQ吹净涂抹界面剂或环氧树脂溶液Q用配制好的J-6胶^石砼填{，修补长度按照错台高度除以2%坡度计算?/span>
D\面的加铺?/span>
1、结合式加铺层，先对旧水泥砼路面板凿毛（?span style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; line-height: 28.5px; font-family: Calibri;">2-3cmQ间?span style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; line-height: 28.5px; font-family: Calibri;">5-10cmQ吹净后，涂抹一层界面剂或环氧树脂溶Ԍ此时可认为层间的相对水^位移?零即q箋接触Q结合式加铺层，采用U维增强快硬混凝土（U维体积率ؓ1.2Q粗集料最大粒径ؓ20Q含砂率45Q水泥标号ؓP.O52.5Q厚度一般不??span style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; line-height: 28.5px; font-family: Calibri;">10cm?/span>
2、直接式加铺层，层间只涂抹界面剂Q其他不作Q何处理，加铺水惔快硬|厚度不得于14cm?/span>
3、分d加铺层，隔离层常采用厚度2cm的沥青砂或沥青表处或ҎQ加铺快水泥砼Q厚度不得小?span style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; line-height: 28.5px; font-family: Calibri;">18cm?/span>
设接~刚性\面，全深度砼补板
全深度砼补板可恢复横U间接缝或裂~传递板间荷载的能力Qƈ可最大限度地减少垂直弯沉Q发生在大面U严重破损时Q即严重破碎、沉陗脱I的板块Q应去除 q更换全板，破损面积一些的要通过鉴定来确定需要做全深度补板的边界Q在边界四周涂抹界面剂或环氧树脂溶液Qƈ在纵~设|拉力杆。横~设|传力杆Q钻孔 后Q用环氧树脂砂浆_合Q。填{前先处理基病害Qؓ解决修补材料Q江苏省建科院研制出KS?span style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; line-height: 28.5px; font-family: Calibri;">JK?span style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; line-height: 28.5px; font-family: Calibri;">AS{系列材料。其?span style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; line-height: 28.5px; font-family: Calibri;">KS早强剂特别好Q?span style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; line-height: 28.5px; font-family: Calibri;">KS掺量为水 泥用量的25%Q，适用于裂~罩面，局部修补等紧急抢修工E?span style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; line-height: 28.5px; font-family: Calibri;">JKpd新型快速砼修补剂（JK掺量为水泥用量的8-16%Q具有早强、收~小、耐久性好Q?h适中{优点，可用于罩面修补工E（一?span style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; line-height: 28.5px; font-family: Calibri;">4-24h后即可通RQ?span style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; line-height: 28.5px; font-family: Calibri;">AS胶凝材料Q超快硬Q抗L好QhgQ可替代水惔Q适用于整版翻修。对于大面积|?面和加铺砼面层宜采用早强水惔?/span>
板下堵
只有在支承能力q度有限的接缝Q裂~处或弯 沉超q?span style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; line-height: 28.5px; font-family: Calibri;">0.6mm的板块才能进行板下封堵，卛_杉K接缝、裂~处提供_的孔Q孔的直径不大于5cmQ孔应钻入土基层内，砂浆喷射的输出口不低于砼?的板底）Q这h能砂浆能流到\面下所有的I隙内，灌完~浆后（需要二ơ灌）Q应拔出灌浆栓ƈ立即插上木塞Q以便有_的时间砂浆充分凝固Qƈ在初 凝前Q二ơ或三次灌浆Q直至灌满结束后Q立即用环氧树脂砂浆孔。灌压力ؓ0.8-1.2MPaQ其配合比水泥（P.O52.5Q：_煤灎ͼ?span style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; line-height: 28.5px; font-family: Calibri;">=1Q?span style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; line-height: 28.5px; font-family: Calibri;">0.5Q?span style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; line-height: 28.5px; font-family: Calibri;">1.5Q?span style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; line-height: 28.5px; font-family: Calibri;">7a的抗压强度不于5MPa。封堉|间要严密观察Q以免灌过度，板被抬升Q当砂浆从相d入接缝Q裂~，孔与路肩下方或?压力表压力迅速升高时Q可停止灌浆Q灌后2h内应避免一切R辆通过灌浆区?/span>
水惔D\面开凿板块的回收
回收破碎板块Q意义重大，具体表现为利用现有\面破板块来铺筑基层Q也可作处治垫层Q不需L堆放场地。经_碎U配后，可以铺筑水惔砼新路面Q我们研制了一台轮胎式水惔砼破板块粉机取得了良好的成效?/span>
