Imozulu eshushu

Ngaphantsi kweemeko zemozulu ezishushu, kugxininiswa ekulawuleni amaxesha okubeka ikhonkrithi kunye nokunciphisa ilahleko yokufuma ekubekweni. Indlela elula yokushwankathela iziphakamiso zemozulu ezishushu zokwakhiwa kwe-topping kukusebenza ngezigaba (ukubekwa kwangaphambili, ukubekwa, kunye nokubekwa emva).

Iingqwalasela zemozulu eshushu kwinqanaba lokubekwa kwangaphambili libandakanya ukucwangciswa kolwakhiwo, uyilo lomxube wekhonkrithi, kunye nesiseko se-slab. Imixube ethe kratya yekhonkrithi eyenzelwe ngesantya esisezantsi sokopha ichaphazeleka ngakumbi kwimiba eqhelekileyo yemozulu eshushu efana nokushwabana kweplastiki, ukuqweqwedisa, kunye nexesha lokungahambelani lokumisela. Le ngxubevange ngokubanzi inomlinganiselo ophantsi wezinto zesamente zamanzi (w/cm) kunye nomxholo wezohlwayo ophezulu osuka kumdibaniso kunye nemicu. Ukusebenzisa i-aggregate ekumgangatho ophezulu kunye nobukhulu obukhulu obuphezulu obunokwenzeka kwisicelo kusoloko kucetyiswa. Oku kuya kuphucula imfuno yamanzi kunye nokusebenza kwisiqulatho samanzi esinikiweyo.

Ukulungiswa kwe-slab yesiseko yenye yezona zinto zibalulekileyo eziqwalaselwayo xa ubeka i-toppings kwimozulu eshushu. I-conditioning iya kwahluka ngokuxhomekeke kuyilo lwe-topping. I-Bonded toppings izuza kuzo zombini iqondo lokushisa kunye nokulungiswa kokufuma ngelixa iimeko zokushisa kuphela kuya kufuneka ziqwalaselwe kwii-slabs ezingabotshwanga.

Ezinye izikhululo zemozulu eziphathwayo zilinganisa iimeko zendawo kwaye zivumela igalelo lobushushu bekhonkrithi ukubonelela ngesantya sokumka komphunga ngexesha lokubekwa kwekhonkrithi.

Isiseko somswakama we-slab kwi-toppings edibeneyo kunciphisa ukulahleka komswakama ukusuka kwi-topping kwaye inokunceda ukwandisa ixesha lokumisela umxube we-topping ngokupholisa i-slab yesiseko. Akukho nkqubo isemgangathweni yokubeka imeko ye-slab yesiseko kwaye akukho ndlela yokuvavanya umgangatho wokufuma komhlaba we-slab yesiseko elungele ukufumana i-topping. Iikontraka eziphandwe malunga nesiseko-slab sazo sokulungiselela imozulu eshushu zibike uluhlu lweendlela eziphumelelayo zokulungisa.

Ezinye iikontraka zimanzisa umphezulu ngombhobho wegadi ngelixa abanye bethanda ukusebenzisa iwasha yoxinzelelo ukunceda ukucoca kunye nokunyanzela amanzi kwiipore ezingaphezulu. Emva kokumanzisa umphezulu, iikontraka zibika ukwahluka okubanzi kumaxesha okuntywila okanye okumisela imeko. Ezinye iikontraka ezisebenzisa iwashers zamandla ziqhubeka nokubeka i-topping ngokukhawuleza emva kokumanzisa kunye nokususwa kwamanzi angaphezulu ukusuka phezulu. Ngokuxhomekeke kwiimeko zokomisa, abanye baya kumanzisa umphezulu ngaphezu kwesinye okanye bagqume umphezulu ngeplastiki kwaye bawubeke phakathi kweeyure ezimbini ukuya kwezingama-24 ngaphambi kokususa amanzi angaphezulu kunye nokubeka umxube wokugquma.

Ubushushu be-base slab busenokufuna ukulungiswa ukuba bushushu kakhulu kunomxube we-topping. I-slab yesiseko eshushu inokuchaphazela kakubi umxube we-topping ngokunciphisa ukusebenza kwayo, ukwandisa imfuno yamanzi, kunye nokukhawuleza ixesha lokumisela. Ukulungiswa kobushushu kunokuba nzima ngokusekelwe kubunzima be-slab ekhoyo. Ngaphandle kokuba i-slab ivaliwe okanye ifakwe umbala, kukho iindlela ezimbalwa zokunciphisa ubushushu be-slab. Iikontraka ezikumazantsi e-US zikhetha ukumanzisa phantsi komhlaba ngamanzi apholileyo okanye ukubeka umxube we-topping ebusuku okanye zombini. Iikontraka eziphononongiweyo azizange zithintele ukubekwa kwe-topping ngokusekelwe kubushushu be-substrate; ezona ndawo zikhethwayo ebusuku kunye nokulungiswa kokufuma, ngokusekelwe kumava. Kuphononongo lokwaleka kweendlela ezidityanisiweyo eTexas, abaphandi baxele amaqondo obushushu asezantsi e-140 F okanye ngaphezulu ngexesha lasehlotyeni ekukhanyeni kwelanga kwaye bacetyiswe ukuba kuthintelwe ukubeka phezulu xa amaqondo obushushu e-substrate engaphezulu kwe-125 F.

Iingqwalasela zemozulu eshushu kwinqanaba lokubeka libandakanya ukulawula ukuhanjiswa kwekhonkrithi kunye nokulahleka komswakama kwi-slab ye-topping ngexesha lokugqiba. Iinkqubo ezifanayo ezisetyenziselwa ukulawula ukushisa kwekhonkrithi kwii-slabs zingalandelwa kwi-toppings.

Ukongezelela, ukulahleka komswakama kwi-concrete topping kufuneka kubekwe iliso kwaye kuncitshiswe. Kunokusebenzisa iingqikelelo zesantya somphumo womphunga okanye idatha yesikhululo semozulu esikufuphi ukubala izinga lokuphuphuma kwamanzi, isikhululo semozulu esiphathwa ngesandla kufuneka sibekwe kumphakamo omalunga nee-intshi ezingama-20 ngaphezu komphezulu we slab. Izixhobo ziyafumaneka ezinokulinganisa ubushushu bomoya okwindawo kunye nokufuma okunxulumeneyo kunye nesantya somoya. Ezi zixhobo zifuna kuphela ubushushu bekhonkrithi ukubala ngokuzenzekelayo umlinganiselo wokuphuma kwamanzi. Xa umlinganiselo wokuphuphuma komphunga ungaphezu kwe-0.15 ukuya kwi-0.2 lb/sf/hr, kufuneka kuthatyathwe inyathelo lokunciphisa isantya somphunga ukusuka kumphezulu ongaphezulu.