Umhla wokuPoswa:21,Mar,2022

I-Toppings, njengayo nayiphi na enye ikhonkrithi, ixhomekeke kwiingcebiso zoshishino ngokubanzi malunga nemozulu eshushu kunye nebandayo yezenzo zokugalela ikhonkrithi.Ukucwangciswa okufanelekileyo kunye nokusebenza kubalulekile ekunciphiseni imiphumo emibi yemozulu embi kakhulu kwi-topping, ukuqinisa, ukusika, ukunyanga kunye nophuhliso lwamandla.Into ephambili ekufuneka iqwalaselwe xa kucwangciswa malunga neempembelelo zeemeko zokusingqongileyo kulwakhiwo oluphezulu ngumgangatho we-slabs ekhoyo.Kwimozulu eshushu kakhulu kwaye kubanda kakhulu, iipleyiti eziphezulu kunye nezantsi zihlala zibekwe kumaqondo obushushu ahlukeneyo, kodwa ziya kufikelela kwi-equilibrium ye-thermal ngexesha lokunyanga.Ngokuqhelekileyo, i-plate yesiseko yenza ininzi yebhodi edibeneyo (edibeneyo okanye engabandakanywanga), ngoko ke ukulungiswa kweplate yesiseko phambi kokwakhiwa akunakunakwa.I-Thinner toppings inokuthi ichaphazeleke ngakumbi kwimiba enxulumene nobushushu.Iipleyiti ezisezantsi ezibandayo zinokubangela iingxaki zokugqiba ngenxa yokulibaziseka kokuqina, ukulibaziseka ukufumana amandla, okanye umphezulu onomkhenkce ukuba awulungiswanga kakuhle.I-plate yesiseko eshushu inokubangela ukuqina ngokukhawuleza, oku kunokuchaphazela kakubi ukusebenza, ukudibanisa, ukugqiba kunye nokudibanisa.Ingcebiso ngeshishini lokujongana nemozulu eshushu nebandayo ibhalwe kakuhle;nangona kunjalo, ukugalelwa kwekhonkrithi kukwajongene neminye imingcipheko enxulumene nemozulu, efana nemvula, ukuba ishishini likhankanya ngokulambisa.Imozulu ayiqikelelekanga, kwaye ukubekwa kuhlala kwenziwa xa kukho ithuba lemvula ukuhlangabezana neemfuno zeshedyuli yeprojekthi.Ixesha, ubude bexesha, kunye nobunzulu bezantyalantyala zemvula zizinto zonke ezibalulekileyo ezichaphazela impumelelo yokubeka.

Ukubonakaliswa kwemvula ngexesha lokubeka

Kwiimeko ezininzi, ukugalelwa kwekhonkrithi okuvezwe emvuleni akusayi konakaliswa ukuba amanzi emvula agqithileyo asusiwe phambi kokuba kugqitywe.Ngokutsho kweConcrete Finishing Guide epapashwe yi Cement Concrete & Aggregates Australia, ukuba umphezulu wekhonkrithi uba manzi (ufana nokopha), amanzi emvula kufuneka asuswe ukuze aqhubeke nokugqiba.Kukho inkxalabo eqhelekileyo yokuba imvula inokunyusa umlinganiselo wamanzi-samente kwindawo yokubeka, okukhokelela ekunciphiseni amandla, ukunyuka kwe-shrinkage kunye nomhlaba obuthathaka.Oku kunokuba yinyani ukuba amanzi akanako okanye akasuswanga phambi kokuba agqitywe;nangona kunjalo, unokontraka ubonise ukuba oku akunjalo xa kuthathwa amanyathelo okukhusela ukususa amanzi angaphezulu.Ezona zilumkiso zixhaphakileyo kukugquma ikhonkrithi ngeplastiki okanye uyibeke esichengeni semvula kwaye ukhuphe amanzi agqithisileyo phambi kokugqiba.

Ukuba kuyenzeka, vala indawo leyo ngeplastiki ukunciphisa ukungakhuseleki kumanzi emvula.Nangona oku kuyindlela efanelekileyo, ukusetyenziswa kweplastiki kunokuba nzima okanye akunakwenzeka ukuba abasebenzi abanakuhamba phezu komhlaba, okanye iphepha leplastiki alibanzi ngokwaneleyo ukugubungela ububanzi bendawo, okanye ukuqinisa okanye ezinye izinto zokungena ziphuma phezulu. .Ezinye iikontraka zikwalumkisa ngokusebenzisa iplastiki kuba igcina ubushushu kwaye ibangela ukuba umphezulu umiswe ngokukhawuleza.Ukunciphisa ifestile yokugqiba ayinakunqweneleka kule meko, njengoko kunokufuneka ixesha elongezelelweyo ukususa amanzi kunye nokugqiba umsebenzi wokugqiba.

Ibhodi entsha inokugqunywa ngeplastiki ukukhusela umphezulu ngexesha lemvula engalindelekanga.

Amanzi emvula agqithileyo anokususwa kumphezulu wamacwecwe amatsha ngokusebenzisa umbhobho wegadi okanye ezinye izixhobo ezisicaba ezifana nezikrweqe kunye neeshiti eziqinileyo zokugquma.

Iikontraka ezininzi zityhila umphezulu kwaye zibeke esichengeni semvula.Ngokufana nokukhutshwa kwamanzi, amanzi emvula awaxutywanga yi-slab yomgangatho, kodwa kufuneka abe ngumphunga okanye asuswe ngaphambi kokugqitywa.Ezinye iikontraka zikhetha ukutsala umbhobho omde wegadi phezu kwe-slab ukususa amanzi angaphezulu, ngelixa abanye bekhetha ukusebenzisa i-scraper okanye ubude obufutshane be-foam insulation eqinile ukuqondisa amanzi phantsi kwe-slab.Enye i-grout yomhlaba inokususwa ngamanzi angaphezulu, kodwa oku akusoloko kuyingxaki njengoko ukugqiba okongeziweyo kudla ngokuzisa i-grout ngaphezulu.

Iikontraka akufuneki zisasaze isamente eyomileyo phezu komhlaba ukunceda ukufunxa amanzi amaninzi emvula.Ngelixa i-samente inokusabela ngokugqithisileyo kwamanzi emvula, intlama enesiphumo ayinakudityaniswa kwindawo ye-slab.Oku kukhokelela kumgangatho ombi womphezulu odla ngokuthanda ukuxobulwa kunye ne-delamination.