Isimo sezulu esibandayo
Ngaphansi kwezimo zezulu ezibandayo, kugcizelelwa ekuvikeleni iminyaka yobudala yobudala nokuphatha amazinga okushisa okukhona ngesikhathi sokuphulukisa ukukhuthaza ukuthuthukiswa kwamandla. Ukuphatha izinga lokushisa le-Base Slab ngesikhathi sokubekwa kanye nokwelashwa kwe-slab ephezulu kungaba yisici esiyinselele kunazo zonke esihlobene nokukhokhwa kwesimo sezulu esibandayo.
I-Base Slab izoba nesisindo esikhulu kunesilayi esiphezulu. Ngenxa yalokhu, izinga lokushisa le-base slab lizoba nomthelela omkhulu ekubekeni ukubekwa kwe-topping slab. Ama-slabs we-topping akufanele abekwe esigodini esisezingeni eliqandisiwe selokhu kushiywe kwezinga lokushisa kwe-base slab kuzodonsa ukushisa kude nokuxubana okusha.

Esimweni sezulu esibandayo I-heater evulekile kufanele itholakale ngaphandle kwesakhiwo ngesikhathi sokubekwa kwe-topping.
Izincomo Zezimboni ukuthi i-Base Slab kufanele igcinwe ekushiseni okungenani okungama-40 f ngesikhathi sokubekwa kanye nokwelashwa kokuphakanyiswa ukukhuthaza i-hydration, ukuthuthukiswa kwamandla, futhi kugwenywe ukubanda ngeminyaka. I-Cooler Base Slabs ingabuyisa iqoqo lokuxuba okuphezulu, isikhathi eside esopha nemisebenzi yokuqeda. Lokhu kungenza futhi ukwehla kwe-topping kuthambekele kwezinye izingqinamba zokuqeda njenge-shrinkage yepulasitiki nokuqhekeka komhlaba. Uma singaba khona, sincoma ukufudumeza isisekelo se-sab ukuvikela ukuqanda futhi kunikeze izimo zokwelapha okwamukelekayo.
Ukuxutshwa kwesimo sezulu esibandayo kuklanyelwe ukusiza ukulungisa imiphumela yokushisa kwamazinga okushisa. Faka esikhundleni sokwenza izinto ezingezelelweyo ze-cemential nge usimende oqondile, sebenzisa uhlobo lwe-III cement, bese usebenzisa ukushelela ama-admixtures (cabanga ukwanda kwe-admixtures (cabanga ukwanda kwemithamo njengoba ukubekwa kuthuthuka isikhathi).
Umswakama ubeka isisekelo esilungiselelwe ngaphambi kokubekwa kungaba inselelo ebandayo sezulu. Ukumanzisa kuqala i-base slab ayinconywa uma kulindeleke ukuthi kulindelwe. Ama-toppings amaningi, nokho, akhiwa kuma-slabs akhona lapho kwakhiwa khona isakhiwo. Ngakho-ke, ukungeza ukushisa endaweni lapho kuzobekwa khona i-topping kuvame ukuba yinselele kunokwakhiwa kwasekuqaleni kwe-superstrupture kanye nesisekelo slab.
Njengangokuma kwangaphambili kwesisekelo, ukwelashwa okunomswakama kufanele futhi kugwenywe uma kulindeleke ukuthi kulindeleke. Kodwa-ke, ama-toppings amancanyana anezinhlanganisela azwela kakhulu ukoma kusenesikhathi ngenkathi amandla ebhondi ekhula. Uma i-topping yebhondi idonsa futhi icwilisa ngaphambi kokuthuthukisa amandla e-bond anele esisekelweni, amabutho ama-shear angadala ukuthi ukuphakama kususe kusuka kusisekelo. Lapho nje ukuhlinza kwenzeka esemncane, ukuphambana ngeke kuphinde kuqale kabusha isibopho kuya engxenyeni engezansi. Ngakho-ke, ukuvimbela ukoma kusenesikhathi kuyinto ebalulekile ekwakhiweni kwama-toppings aboshwe.