Ungqimba oluyisisekelo lwe-asphalt pavement ihlukaniswe yaba i-semi-rigid futhi eqinile. Njengoba ungqimba oluyisisekelo kanye nongqimba olungaphezulu kuyizinto zezakhiwo ezihlukene, ukubopha okuhle nokuqhubeka phakathi kokubili kuyizidingo eziphezulu zalolu hlobo lokuhamba ngezinyawo. Ukwengeza, lapho ungqimba olungaphezulu lwetiyela ludonsa amanzi, amanzi amaningi azogxiliswa ekuhlanganyeleni phakathi kongqimba olungaphezulu nongqimba oluyisisekelo, okubangela umonakalo endaweni egandaywe yitiyela njengodaka, ukuxega, nemigodi. Ngakho-ke, ukwengeza isendlalelo sophawu oluphansi phezulu kwesendlalelo sesisekelo esiqinile kancane noma esiqinile kuzodlala indima ebalulekile ekuthuthukiseni amandla, ukuzinza kanye namakhono okuvikela amanzi ongqimba lwesakhiwo esigandayiwe. Okuvame ukusetshenziswa kakhulu ukusebenzisa ubuchwepheshe be-asphalt gravel synchronous sealing.

Isendlalelo sokuvala esiphansi
Ukuxhumana kwe-inter-layer
Kunomehluko osobala phakathi kongqimba lwe-asphalt surface kanye nesendlalelo sesisekelo esiqinile noma esiqinile ngokwesakhiwo, izinto zokwakha, ubuchwepheshe bokwakha kanye nesikhathi. Indawo eshelelayo yakheka ngokuyikho phakathi kwesendlalelo esingaphezulu nesendlalelo sesisekelo. Ngemva kokwengeza ungqimba oluphansi lokuvala, ungqimba olungaphezulu kanye nongqimba lwesisekelo lungaxhunywa ngempumelelo lube lunye.

Dlulisa umthwalo
Isendlalelo se-asphalt kanye nongqimba oluyisisekelo oluqinile noma oluqinile ludlala izindima ezihlukene ohlelweni lwesakhiwo somgwaqo. Isendlalelo se-asphalt ngaphezulu sidlala indima yokunqanda ukushibilika kwamanzi, ukungangeni kwamanzi, ukulwa nomsindo, ukushelela nokuqhekeka kwe-anti-shear, futhi sidlulisela umthwalo kungqimba oluyisisekelo. Ukuze kuzuzwe inhloso yokudlulisa umthwalo, kufanele kube nokuqhubeka okuqinile phakathi kwesendlalelo esingaphezulu nesendlalelo sesisekelo. Lokhu kuqhubeka kungafinyelelwa ngomsebenzi wesendlalelo sokuvala esingezansi (ungqimba olunamathelayo, ungqimba oluvunyelekayo).

Thuthukisa amandla omgwaqo
I-elastic modulus ye-asphalt surface layer kanye nesendlalelo sesisekelo esiqinile noma esiqinile sihlukile. Uma zihlanganiswa ndawonye futhi zingaphansi komthwalo, izindlela zokusabalalisa ukucindezeleka zesendlalelo ngasinye zihlukile futhi ukuguqulwa nakho kuhlukile. Ngaphansi kwesenzo somthwalo oqondile kanye namandla okushayisana kwemoto, Isendlalelo esingaphezulu sizoba nethrendi yokugudluka ehlobene nesendlalelo sesisekelo. Uma ukungqubuzana kwangaphakathi namandla okubopha ongqimba olungaphezulu ngokwalo kanye nengcindezi egobekayo neqinile ngaphansi kongqimba olungaphezulu akukwazi ukumelana nalokhu kucindezeleka okuguquguqukayo, ungqimba olungaphezulu luzohlushwa ukusunduzwa, ukuhuquza, ngisho nokuxegiswa nokuxebuka. Ngakho-ke, amandla engeziwe kufanele anikezwe Ukuvimbela lokhu kunyakaza phakathi kwezingqimba. Ngemuva kokwengeza ungqimba oluphansi lokuvala, ukungqubuzana kanye namandla okubopha ukuvimbela ukunyakaza kuyanda phakathi kwezingqimba, ezingenza imisebenzi yokubopha nokuguqula phakathi kokuqina nokuthambile, ukuze ungqimba olungaphezulu, ungqimba lwesisekelo, ungqimba lomcamelo kanye nesisekelo senhlabathi sikwazi ukumelana. umthwalo ndawonye. Ukuze kuzuzwe inhloso yokuthuthukisa amandla ewonke omgwaqo.

Ingangeni manzi futhi ayingeneli
Esakhiweni esinezendlalelo eziningi sokugandaywa kwetiyela kuthelawayeka, okungenani ungqimba olulodwa kufanele kube uhlobo lwengxube ye-asphalt ye-asphalt yohlobo oluminyene. Inhloso yawo ukuthuthukisa ukuminyana kongqimba olungaphezulu nokuvimbela amanzi angaphezulu ukuthi angaguguleki futhi alimaze i-pavement kanye nesisekelo somgwaqo. Kodwa lokhu kukodwa akwanele, ngoba ngaphezu kwezici zokuklama, ukwakhiwa kokhonkolo we-asphalt nakho kuthinteka yizici eziningi ezifana nekhwalithi ye-asphalt, izakhiwo zamatshe, ukucaciswa kwamatshe kanye nokulinganisa, isilinganiso setshe likawoyela, imishini yokuxuba nokugandaywa, izinga lokushisa eliguquguqukayo. , isikhathi sokugoqa, njll. Umthelela. Ungqimba olungaphezulu, okufanele lube nokuminyana okuhle futhi lucishe lukwazi ukungena emanzini, luvame ukuba nokungena kwamanzi okuphezulu ngenxa yokuthi isixhumanisi esithile singekho, ngaleyo ndlela sithinte ikhono lokunqanda ukuvuleka kwe-asphalt pavement. Kuthinta ngisho nokuzinza kwe-asphalt pavement ngokwayo, ungqimba oluyisisekelo kanye nesisekelo senhlabathi. Ngakho-ke, "Izicaciso Zobuchwepheshe Zokwakhiwa Kwe-Asphalt Pavement Yomgwaqo Omkhulu" ibeka ngokucacile ukuthi uma itholakala endaweni enemvula futhi ungqimba olungaphezulu lwetiyela lunezikhala ezinkulu kanye nokugeleza kwamanzi okubucayi, ungqimba oluphansi lokuvala kufanele lubekwe ngaphansi kongqimba lwe-asphalt.

Uhlelo lokwakha ungqimba lophawu oluphansi
Umgomo wokusebenza wokuvala uphawu lwamatshe okuvumelanisa ukusebenzisa izinto zokwakha ezikhethekile, umshini wokuvala amatshe ovumelanisiwe, ukufafaza i-asphalt enezinga eliphezulu lokushisa kanye namatshe ahlanzekile, omile futhi afanayo emgwaqeni cishe ngasikhathi sinye, ukuqinisekisa ukuthi i-asphalt netshe kufafazwa emgwaqeni. indawo yomgwaqo ngesikhathi esifushane. Qedela inhlanganisela futhi uqinise ngokuqhubekayo amandla ngaphansi kwesenzo somthwalo wangaphandle.
Izinhlobo ezahlukene ze-asphalt binders zingasetshenziselwa ukubekwa uphawu kanyekanye kwe-asphalt gravel: i-asphalt ehlanzekile ethambile, i-polymer SBS eguquliwe i-asphalt, i-emulsified asphalt, i-polymer modified emulsified asphalt, i-asphalt ehlanjululwe, njll. Njengamanje, inqubo esetshenziswa kakhulu eChina iwukuba shisisa itiyela elivamile elishisayo libe ngu-140°C noma shisisa itiyela eshintshiwe ye-SBS ibe ngu-170°C. Sebenzisa iloli elisakaza itiyela ukuze ufafaze itiyela ngokulinganayo phezu kwesendlalelo sesisekelo esiqinile noma esiqinile, bese usakaza i-aggregate ngokulinganayo. I-aggregate yenziwe nge-limestone gravel enosayizi wezinhlayiyana we-13.2 ~ 19mm. Kufanele ihlanzeke, yome, ingabi nasimo sezulu, ingabi nakungcola futhi ibe nokuma okuhle kwezinhlayiyana. Inani lamatshe kufanele libe phakathi kuka-60% no-70% wendawo egcwele yokugandaywa.
Umthamo we-asphalt ne-aggregate ilawulwa ngokwenani eliphezulu le-1200kg·km-2 kanye ne-9m3·km-2 ngokulandelanayo. Ukwakhiwa ngokwalolu hlelo kudinga ukunemba okuphezulu kwenani lokufafaza kwe-asphalt kanye nokusabalalisa okuhlanganisiwe, ngakho-ke iloli le-asphalt gravel synchronous sealing iloli kufanele isetshenziselwe ukwakha. Phezulu kwesisekelo sikasimende esizinzile esifafazwe, sabalalisa itiyela elishisayo noma itiyela eliguquliwe le-SBS ngenani elingaba ngu-1.2~2.0kg·km-2, bese usakaza ngokulinganayo ungqimba lwetshe ngezinhlayiyana eyodwa. usayizi phezulu. Ubukhulu bezinhlayiyana zetshe kanye nezinhlayiyana kufanele zifane nosayizi wezinhlayiyana zikakhonkolo we-asphalt ogandaywe phezu kongqimba olungangeni manzi. Indawo yayo yokusabalalisa i-60% kuya ku-70% ye-pavement egcwele, bese i-roller yesondo lerabha isetshenziselwa ukuzinzisa ukucindezela izikhathi ezingu-1 kuya kwezi-2 ukuze zenziwe. Inhloso yokusabalalisa amatshe anosayizi owodwa ukuvikela ungqimba olungangeni manzi ukuthi lungalinyazwa amathayi ezimoto zokwakha ezifana namaloli kanye namathrekhi engxube ye-asphalt paver ngesikhathi sokwakha, nokuvimbela itiyela eliguquliwe ukuthi lingancibiliki ngenxa yezinga lokushisa eliphezulu. kanye nengxube ye-asphalt eshisayo. Isondo lizonamathela futhi lithinte ukwakhiwa.
Ngokwethiyori, amatshe awaxhumani. Lapho kugandaywa ingxube ye-asphalt, ingxube yezinga eliphezulu lokushisa izongena ezikhaleni phakathi kwamatshe, okwenza ulwelwesi lwe-asphalt oluguquliwe luncibilike ngokushisa. Ngemva kokugingqika nokuhlanganisa, ugwadule olumhlophe luba amatshe e-Asphalt ashumekwe phansi kwesakhiwo se-asphalt ukuze kwakheke lonke, futhi "ungqimba olunothe ngamafutha" olungaba ngu-1.5cm luyakhiwa phansi kwesendlalelo sesakhiwo. sebenza ngempumelelo njengongqimba olungangeni manzi.