Isimo sezulu esishisayo

Ngaphansi kwezimo zezulu ezishisayo, ukugcizelelwa kokuphatha izikhathi zokubeka ukhonkolo futhi kunciphise ukulahleka komswakama kusuka ekubekweni. Indlela elula yokufingqa izincomo zezulu ezishisayo zokwakhiwa kwe-topping ukusebenzela ezigabeni (ukubekwa ngaphambi kokubekwa, nokubekwa, nokubekwa ngemuva).

Ukucatshangelwa kwesimo sezulu okushisayo esigabeni sokubekwa kwangaphambi kokubekwa kufaka phakathi ukuhlela okwakhiwa, ukwakheka kwengxube kakhonkolo, kanye nesisekelo se-slab. Ukuxutshwa kokhonkolo kokhonkolo okwenziwe ngesilinganiso esiphansi solwandle kutholakala kakhulu ezindabeni zesimo sezulu ezivamile ezinjenge-shrinkage epulasitiki, isikhathi sokukhohlakala, futhi esingahambelani. Lezi zingxube ngokuvamile zinezilinganiso eziphansi zamanzi-ce mementio Usebenzisa i-aggregate efakwe kahle ngosayizi omkhulu kunabo bonke abasezingeni eliphezulu ukuze uhlelo lokusebenza luhlala lululeme. Lokhu kuzothuthukisa ukufunwa kwamanzi nokusebenza kokuqukethwe okunikeziwe kwamanzi.

Isimo se-Base Slab kungenye yezinto ezibaluleke kakhulu lapho ubeka ama-toppings esimweni sezulu esishisayo. Isimo sizokwehluka ngokuya ngomklamo we-topping. Ama-toppings ahlanganisiwe azuza kusuka zombili lezi zimo zokushisa kanye nomswakama ngenkathi kuphela imibandela yokushisa izocatshangelwa ukubheka ama-slab angaphendulwanga.

Ezinye iziteshi zesimo sezulu eziphathekayo zilinganisa izimo ezikhona futhi zivumela okokufanga kokhonkolo ukuhlinzeka ngezinga lokuhwamuka lapho kufakwa ukhonkolo.

Isimo somswakama we-Base Slab sokuqothuka kwesibopho sinciphisa ukulahleka komswakama kusuka ku-topping futhi kungasiza ukwandisa isikhathi sengxube ye-topping ngokupholisa i-base slab. Ayikho inqubo esezingeni eliphakeme yokufaka isimo se-base slab futhi ayikho indlela ejwayelekile yokuhlola yokuhlola indawo yomswakama yendawo yokuswakama elungele ukuthola phezulu. Osonkontileka abahlolisisiwe ngokulungiselela kwabo ngesimo sezulu esishisayo se-Base-slab babike izindlela ezahlukahlukene zokuphumelela zomuthi.

Abanye osonkontileka bamanzisa ingaphezulu nge-hose engadini ngenkathi abanye bethanda ukusebenzisa i-washer yokucindezela ukusiza ukuhlanza nokuphoqa amanzi abe ngamanzi angaphezulu kwama-pores. Ngemuva kokumanzisa ingaphezulu, osonkontileka babika ukuhlukahluka okubanzi ezindaweni zokufaka noma zezimo. Abanye osonkontileka abasebenzisa ama-washers bamandla aqhubeka nokubekwa phezulu ngokushesha ngemuva kokumanzisa nokususwa kwamanzi ngokweqile ebusweni. Ngokuya ngemibandela yokumisa e-ambient, abanye bazomanzisa ingaphezulu ngaphezulu noma bamboze indawo ngeplastiki kanye nesimo yingxenyeni ephakathi kwamahora amabili nangama-24 ngaphambi kokususa amanzi amaningi futhi babeke ingxube ephezulu.

Izinga lokushisa le-base slab lingadinga futhi isimo uma lifudumele kakhulu kunokuxubana okuphezulu. Isisekelo esishisayo se-base singathinta kabi ukuhlanganiswa okuphezulu ngokunciphisa ukusebenziseka kwayo, ukufunwa kwamanzi, nokusheshisa isikhathi. Ukushisa okushisa kungaba nzima ngokusekelwe kubuningi be-slab ekhona. Ngaphandle kokuthi i-slab ifakwe noma ihlanganiswe, zimbalwa izindlela zokunciphisa izinga lokushisa le-base slab. Osonkontileka baseSouthern US bakhetha ukumanzisa ingaphezulu kwamanzi apholile noma ukubeka ukuxuba okuphezulu ebusuku noma bobabili. Osonkontileka abahlolisisiwe abakalinganiselwe ukubekwa phansi kokubekwa ngokususelwa ekushiseni okuyisisekelo; Ukubekwa okuthandwa kakhulu ebusuku kanye nesimo somswakama, kususelwa kulwazi. Esifundweni se-Bonded Pavement eTexas, abacwaningi babike amazinga okushisa ama-Base Slab angama-140 f noma ngaphezulu ngesikhathi sehlobo elangeni eliqondile futhi anconywe ukugwema ukubekwa phezulu lapho amazinga okushisa angaphezu kuka-125 F.

Ukucatshangelwa kwesimo sezulu okushisayo esigabeni sokubekwa kuhlanganisa ukuphatha amazinga okushisa okulethwa kokhonkolo kanye nokulahleka komswakama kusuka ku-slab ephezulu ngesikhathi senqubo yokuqeda. Izinqubo ezifanayo ezisetshenziselwa ukuphatha izinga lokushisa likakhonkolo ama-slabs zingalandelwa ukuthola izihloko.

Ngaphezu kwalokho, ukulahleka komswakama kusuka ku-topcripping ukhonkolo kufanele kubhekwe futhi kuncishiswe. Esikhundleni sokusebenzisa amanani entengo yesilinganiso se-inthanethi noma idatha yesiteshi sezulu esiseduze ukubala inani lokuhwamuka, isiteshi sezulu esiphathwayo kufanele sibekwe endaweni ephakeme ngamasentimitha angama-20 ngaphezulu kwendawo ye-slab ngaphezulu komhlaba. Izinsiza zitholakala ezingalinganisa izinga lokushisa lomoya elikhona kanye nomswakama ohlobene kanye nesivinini somoya. Lawa madivayisi adinga ukufudumala kokhonkolo okufakiwe ukuze abala ngokuzenzakalela izinga lokuhwamuka kokuhwamuka. Lapho izinga lokuhwamuka kokuhwamuka lidlula u-0.15 kuya ku-0.2 lb / sf / hr, isenzo kufanele sithathwe ukunciphisa izinga lokuhwamuka kusuka ebusweni bokuhwamuka.