Karolo ea Lisebelisoa tse sa Tšoaneng Kahong ea Konkreite ea Foam

1. Karolelano ea samente

Thepa e ka sehloohong e tala ea konkreite ea foam ke samente. Hobane konkreite e foamed hangata e phekoloa mocheso oa kamore, 'me palo e kholo ea foam e eketsoa, lintlha tsena tse peli li etsa qeto ea karo-karolelano ea eona e phahameng ea samente. Sena se fapane haholo le konkreite ea aerated. Ka lebaka la konkreite ea aerated ea autoclaved, haholo-holo e itšetlehile ka karabelo ea hydration ea fly ash le lime tlas'a mocheso o phahameng le khatello ea ho hlahisa gelation., le samente ke tlatsetso. Leha ho le joalo, ha konkreite ea foam e hlahisoa mocheso oa kamore, micro-aggregate e sebetsang e ke ke ea potlakela ho hlahisa karabelo ea hydration, 'me foam ea eona e tiileng e ntse e itšetlehile ka phello ea samente. Ka hona, karolelano ea ho kopanya ea konkreite ea foam e tlameha ho ba samente e le 'mele o ka sehloohong, le Karolelano e phahameng ea samente. Tlas'a maemo a tloaelehileng, bokaalo ba samente bo lokela ho ikarabella 50% ho 100% palo yohle ya disebediswa tse omeletseng, le 50% e lokela ho ba moeli o tlaase ka ho fetisisa bakeng sa phekolo ea mocheso oa eona o tloaelehileng. Ha o tshela setsheng, karolo ea samente e lokela ho ikarabella ho feta 80% ea thepa eohle e omeletseng. Bakeng sa mocheso o tloaelehileng oa konkreite e foamed e nang le segokanyipalo se ka tlase 600 kg/m3, karolo ea samente ha ea lokela ho ba ka tlase ho 70% ea thepa eohle. Ha density e ka tlase 400 kg/m3, karo-karolelano ea mocheso kamoreng lokela ho ikarabella ho feta 90% ea thepa e ommeng kaofela, ka ho khetheha 100%.

Karolelano e tlase ea samente e tlameha ho theoa holim'a motheo oa ho netefatsa matla a sehlahisoa, 'me karo-karolelano ea samente e lokela ho fokotsoa motheong oa ts'ebetso ea sehlahisoa sa kopano. E ka fokotsoa ka hohle kamoo ho ka khonehang, le botsitso nakong ya ho tshela (tshella) e lokela ho nahanoa. Samente e tlase haholo e tla baka ho putlama. E ke ke ea kheloha litlhoko tsa tekheniki ho fokotsa karolo ea samente.

Moralo oa karo-karolelano ea samente o lokela ho nahana ka lintlha tse latelang:

① Mofuta oa samente. Mefuta ea samente e nang le matla a pele le a morao haholo (joalo ka samente ea Portland e potlakileng habeli) ka nepo e ka fokotsa karolo ea samente, le mefuta ea samente e nang le matla a tlase a morao kapa matla a pele a tlase a lokela ho eketsa karolo ea samente;

② Matla a matla a samente. Samente ea boemo bo phahameng ea matla e ka fokotsa palo e lekanang, 'me samente ea boemo bo tlaase e lokela ho eketsa tekanyo ea eona;

③ Boleng ba samente. Bakeng sa samente e ncha e tsebahalang ea rotary kiln ea lifeme tse kholo, karolo e ka fokotsoa ka nepo, ha karolo ea samente e nang le samente e ngata e otlolohileng kapa lisebelisoa tse tsoakiloeng e lokela ho eketsoa ka nepo.;

④ Density and strength requirements of the product. Low density or higher strength requirements should increase the cement ratio, high density or lower strength requirements can reduce the cement ratio;

⑤ Initial growth temperature. The initial curing temperature after pouring (tshella) is lower (<25°C). The proportion of cement should be increased. When the initial curing temperature is high (25℃～45℃), the proportion of cement can be appropriately reduced. If steam curing or autoclave is used, it is still strong to reduce the proportion of cement;

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⑥ Variety and activity of active micro-aggregate (motsoako). The use of high-activity micro-aggregates can reduce the proportion of cement (such as ultra-fine slag), while the use of low-activity micro-aggregates (such as secondary fly ash) can increase the proportion of cement.

Ho

2. Active micro-aggregate ratio

When curing at room temperature, especially at low temperature, ha ho na micro-aggregate e sebetsang e lokelang ho raloa kapa e sa hlahisoe hanyane ka har'a foromo, hobane e ama boemo ba pele ba slurry. Haeba tekanyo e kholo, e ka baka ho putlama. Ka kakaretso, tlatsetso ea li-microaggregates tse sebetsang ka litaba tsa samente tse ka tlase ho 10% ha e na tšusumetso e kholo ho coagulation mme e ka lekanngoa. Lehlabuleng tlhahiso e tloaelehileng ea mocheso, tekanyo e phahameng ka ho fetisisa ea ho kopanya ke hoo e ka bang 30% ea samente. Nakong ea phekolo ea mouoane, tekanyo e phahameng ka ho fetisisa ea ho kopanya ke hoo e ka bang 60% ea samente. Karolelano e amana le mofuta oa micro-aggregate e sebetsang. Ha u sebelisa slag Ha e le phofo, boleng bo phahameng bo ka sebelisoa; ha ho sebelisoa molora oa ho fofa oa sehlopha sa pele, boleng bo bohareng bo ka sebelisoa; ha ho sebelisoa molora oa lintsintsi tsa sehlopha sa bobeli, boleng bo tlase bo ka sebelisoa. Ha e kopantsoe le se fokotsang matla a holimo, e ka boela ea eketseha ka ho loketseng.

Kaho ea konkreite ea foam ka kakaretso ha e lokele li-micro-aggregate tse kholo tse sebetsang, hobane hangata e hahiloe ka mocheso oa kamore, 'me ho na le lintlha tse ling tse ngata tse amang botsitso ba ho tšolloa ha slurry. Ka hona, boholo ba palo e sebetsang ea micro-aggregate e lokela ho raloa hore e be ka tlase ho 20% ea samente.

Ha ho nahanoa ka ho fokotsa litšenyehelo, bahlahisi ba bangata hangata ba batla ho sebelisa palo e kholo ea micro-aggregate e sebetsang, haholo fofa molora, e ntseng e sa lekana ho eketsa 50% ea karolo e felletseng ea lisebelisoa tse omeletseng, e ke keng ea khoneha tlas'a phekolo e tloaelehileng ea mocheso. Ho thata ho netefatsa ho tšeloa ho tsitsitseng (tshella). Ho bile le litlaleho le lipampiri tse mabapi le mocheso oa kamore konkreite e nang le makoeba e nang le molora o mongata oa lintsintsi (ho feta 50% ea karo-karolelano ea thepa e omeletseng), empa ho latela boiphihlelo ba rona, sena ha se bonolo ho se fihlela mocheso oa kamore.

3. Kakaretso ea boima bo bobebe

Li-aggregates tse bobebe li khetholloa ka porosity e phahameng 'me ka hona litekanyetso tse phahameng tsa ho monya metsi, boima bo tlase le molumo o moholo ka boima ba yuniti. Ka hona, tlatsetso ea eona e na le tšusumetso e kholo ho monyeng ha metsi le bongata ba sehlahisoa, hape e na le tšusumetso e kholo ho conductivity ea mocheso. Ha ho etsoa karo-karolelano ea eona, lintlha tse latelang li lokela ho hlokomeloa:

① Ha ea lokela ho ba le litlamorao tse mpe ho sekhahla sa ho monya ha metsi ho sehlahisoa. Ho molemo ho khetha li-aggregates tse bobebe tse nang le metsi a fokolang (joalo ka litšila tsa polystyrene), le ho se sebelise li-aggregate tse bobebe tse monyang metsi a mangata (joalo ka perlite e atolositsoeng). Ha sekhahla sa ho monngoa ha metsi sa khase e kopaneng e phahame, karolo ea eona e lokela ho fokotsoa, kapa e lokela ho etsoa tlas'a hydrophobic sealing pretreatment;

② E lokela ho khona ho fokotsa bongata ba sehlahisoa. Ha u khetha li-aggregates tse bobebe, palo e tlase e amanang le eona e lokela ho ba khetho ea pele, mme ya tlase ke e ntle ka ho fetisisa;

③ Ho molemo ho fokotsa mocheso oa mocheso oa sehlahisoa. Kakaretso e bobebe e nang le conductivity e tlase ea mocheso e ntle haholo. E kgothaletswa ho sebelisa litšila polystyrene foam likaroloana tsa polasetiki;

④ Karolo ea li-aggregate tse bobebe e tlameha ho fihlela litlhoko tsa boleng ba sehlahisoa, matla, le conductivity ea mocheso e le maemo. Ho finyella tšebelisano 'moho le bonngoe likarolong tsena tse tharo, motho a ke ke a nahana feela ka litlhoko tsa lehlakore le le leng. E kholoanyane karolo ea khanya e kopaneng, ho mpefala ha matla, empa e ka tlaase ho segokanyipalo le mogote conductivity. Density le mocheso conductivity hloka karolo e khōloanyane ea khanya aggregates, athe matla a hloka karolo e tlase ea likhakanyo tsa khanya. Ena ke khanyetsano e kholo ka tekanyo. Ka hona, lintlha tsena li lokela ho hokahanngoa le ho kopana.

4. Karolelano e boima ea aggregate

Konkreite e nang le foamed e nang le boima bo ka tlase 700 kg/m3 ka kakaretso ha e sebedise dihlopha tse boima, tseo hangata li sebedisoang bakeng sa konkreite e foamed e phahameng haholo. Tšusumetso ea karo-karolelano e boima mabapi le ts'ebetso ea sehlahisoa le ts'ebetso ke:

① Ha karolo e kholo ea likarolo tse boima, ho mpefala le botsitso ba ho tshela (tshella), ho na le monyetla o moholo oa ho etsa hore likarolo tse boima li tebe le ho baka ho putlama; haeba li-aggregate tse boima li sa sebelisoe kapa karolo ea likarolo tse boima e nyane, tshella (tshella) ) E tsitsitseng haholoanyane; ho nahanela botsitso ba ho tshela (tshella), karolo e boima ya aggregate e be nyane hofeta e kgolo;

② E kholoanyane boholo ba karoloana ea kakaretso e boima, ho mpefatsa ho tsholoha (tshella) botsitso, hobane boholo ba karoloana bo boholo, ho bonolo ho teba; ha ho etsoa karo-karolelano, boholo bo bonyenyane bo lokela ho khethoa ha ho kopana le litlhoko tsa tekheniki;

③ Karolo e nepahetseng ea kakaretso e boima e molemo ho ntlafatsa matla a sehlahisoa. Ho latela pono ea matla a sehlahisoa, ho molemo ho kopanya palo e itseng ea boima bo boima.

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