道牙(ya)磚鋪設(she)工藝及(ji)注意(yi)事項

　　平常在馬路邊見到的道牙磚可分(fen)為(wei)立(li)(li)道(dao)(dao)牙(ya)和平道(dao)(dao)牙(ya)。這二者(zhe)(zhe)的區別(bie)是(shi)什(shen)么呢?立(li)(li)道(dao)(dao)牙(ya)指的是(shi)頂面(mian)(mian)(mian)(mian)高(gao)出路(lu)面(mian)(mian)(mian)(mian)的道(dao)(dao)牙(ya)石(shi)(shi)。有(you)標定(ding)車(che)行(xing)道(dao)(dao)范(fan)圍和縱向引導(dao)排險(xian)路(lu)面(mian)(mian)(mian)(mian)水的作(zuo)用(yong)。是(shi)指安(an)于路(lu)面(mian)(mian)(mian)(mian)兩側，區分(fen)人行(xing)道(dao)(dao)(慢車(che)道(dao)(dao))和車(che)行(xing)道(dao)(dao)或者(zhe)(zhe)綠化帶的附屬物，一般(ban)高(gao)于路(lu)面(mian)(mian)(mian)(mian)15cm，又稱(cheng)立(li)(li)沿石(shi)(shi)、立(li)(li)緣(yuan)石(shi)(shi)。平道(dao)(dao)牙(ya)即頂面(mian)(mian)(mian)(mian)與路(lu)面(mian)(mian)(mian)(mian)平齊的道(dao)(dao)牙(ya)石(shi)(shi)，主要有(you)標定(ding)路(lu)面(mian)(mian)(mian)(mian)范(fan)圍、整齊路(lu)容、保護路(lu)面(mian)(mian)(mian)(mian)邊緣(yuan)作(zuo)用(yong)。

　　在(zai)(zai)城市道(dao)(dao)路中(zhong)一般立(li)道(dao)(dao)牙(ya)(ya)和平道(dao)(dao)牙(ya)(ya)這兩(liang)種道(dao)(dao)牙(ya)(ya)磚是組合著用(yong)(yong)，在(zai)(zai)公(gong)路建設中(zhong)立(li)道(dao)(dao)牙(ya)(ya)用(yong)(yong)的(de)多(duo)，平道(dao)(dao)牙(ya)(ya)用(yong)(yong)的(de)少。在(zai)(zai)公(gong)路兩(liang)側一般用(yong)(yong)立(li)道(dao)(dao)牙(ya)(ya)，用(yong)(yong)來區別(bie)人行(xing)道(dao)(dao)和路肩的(de)分界;平道(dao)(dao)牙(ya)(ya)一般用(yong)(yong)在(zai)(zai)路口(kou)，保護(hu)路面，方(fang)便行(xing)車(che)。不(bu)過，這兩(liang)種道(dao)(dao)牙(ya)(ya)的(de)加(jia)工材(cai)質基本沒(mei)有什么區別(bie)。

　　通常道(dao)牙磚(zhuan)的更換(huan)和施(shi)工(gong)方法的工(gong)藝流程為(wei)：施(shi)工(gong)準備(bei)→測(ce)量放線→基(ji)槽(cao)開(kai)挖→路緣(yuan)石(shi)(shi)基(ji)礎澆(jiao)筑混凝土→路緣(yuan)石(shi)(shi)鋪設→檢查驗收→回填→清理現場(chang)。

　　在鋪設透(tou)水(shui)磚(zhuan)的(de)施(shi)工中(zhong)需要注意(yi)的(de)是安(an)砌穩定、頂(ding)面(mian)平整、縫(feng)寬(kuan)均(jun)勻、勾(gou)縫(feng)密實、線(xian)條(tiao)直順，曲線(xian)圓滑(hua)美觀(guan)。槽底基礎和后背(bei)填料必須(xu)夯打密實。