Ọmụmụ na mmetụta Superplasticizer dị na kọmpụta

1.Gịnị bụ superplasticizer?

Superplasticizer ,bụ ụdị ihe mgbakwunye ihe nke nwere ike ibelata oke mmiri a na-eji agwakọta n'okpuru ọnọdụ nke idobe slump nke concreteunchanged. Ọtụtụ n'ime ha bụ anionic surfactants., dị ka lignin sulfonate, naphthalene sulfonate formaldehyde polymer, wdg. Mgbe agbakwunyere ngwakọta ihe, ọ nwere ike ịgbasa irighiri ciment, melite ọrụ ya, belata oriri mmiri unit ma melite fluidity nke ihe ngwakọta.Ma ọ bụ belata ọnụ ọgụgụ nke ciment unit, mana ihe superplasticizer nke ukwuu, ọ bụghị naanị na ọ pụghị imeziwanye mmegharị ahụ, mana ọ ga-eduga na nkewa slurry ájá na mmiri na-agba ọbara.

2.Kedu ka superplasticizer si arụ ọrụ?

Superplasticizer bụ n'ezie ụdị ihe eji ewu ụlọ, a na-eji ya eme ihe ga-emepụta ụfụfụ na afụ na ihe ndị ọzọ sol, ma ha nwere njirimara dị iche iche na usoro nhazi, na-akpata site na ionic superplasticizer. Mgbe agbakwunyere superplasticizer na ihe, superplasticizer ga-adsorbed n'elu nke ciment irighiri. N'ozuzu, gbasara 80% nke superplasticizer ga-adabasị site na ciment irighiri, nke nwere ike idobe steeti nchịkọta na-enweghị mgbasa ruo ogologo oge. Enweghị superplasticizer na ihe. , ihe ga-enwe ikuku ụfọdụ (2% ma ọ bụ otú ahụ), size nke egosipụta kpụrụ bụ ahaghị nhata, na nkesa bụ nnọọ uneven. Mgbe superplasticizer na-agbakwunyere ihe, nkesa nke ihe parameters nwere ike ịnọgide na-enwe ezigbo ihe onwunwe ma melite ọrụ arụmọrụ nke ihe, dị ka ike tensile nke konkịtị.

Na mgbakwunye, na-agbakwunye superplasticizer na ihe ngwakọta nwere ike inye aka belata oriri mmiri na ngwakọta ihe, na obere afụ ikuku sol nke emepụtara nwere ike inye aka mejupụta oghere ndị dị n'ime kọnkịta, budata melite impermeability nke ihe, na welie ya chemical corrosion resistance na ịka nká.Enwere ike itinye ihe na-ebelata mmiri n'ime njem mmiri n'efu nke ihe dị n'ime., nke na-enyere aka mee ka nrụgide hydrostatic dị mfe ma welie ikike nke ihe iji guzogide usoro ịhịa aka n'ahụ ugboro ugboro. Onye na-eme ka mmiri na-ebelata mmiri nwere ike belata ọnụ ọgụgụ mmeghachi omume hydration nke ciment n'etiti na mbubreyo ogbo., mee ka ike nke ciment dịkwuo mma ma kwalite ọrụ mgbochi mgbasawanye ya. Ya mere, mgbe agwakọta ihe, na mgbakwunye na-atụle ájá, nkume, ciment na ihe ndị ọzọ a na-emekarị, mgbakwunye kwesịrị ekwesị nke ụfọdụ ihe na-ebelata mmiri iji meziwanye arụmọrụ nke ihe.

1. Mmetụta nke superplasticizer onunu ogwu na ihe

(1) Mmetụta nke ihe na-ebelata mmiri na mkpọda nke kọmpụta agwakọta ọhụrụ

Na nyocha nke ihe arụ ọrụ na mmiri mmiri, index nke ukwu bụ mkpọda, ọnụ ahịa dị elu, ka mma na fluidity nke concrete.Slump ọnwụ na-ezo aka ihe dị iche n'etiti slump na mbụ slump tụrụ site na kọmpụta mgbe a kpọmkwem oge.. Ihe na-emetụta ya gụnyere ciment, njirimara mkpokọta na mmiri-ciment ruru, wdg. Ụdị ihe na-eme ka mmiri na-ebelata mmiri bụkwa isi ihe na-emetụta ya.

2) Mmetụta nke mmiri nbelata na ike mkpakọ nke ihe gwakọtara ọhụrụ

The ihe ike kpụrụ dị iche iche ụdị superplasticizer nwere dị iche iche mmetụta.By itinye superplasticizer ike budata ibelata Ịgwakọta ihe Ịgwakọta mmiri oriri., melite ogo hydration nke ciment, melite ihe ọ bụla afọ (3 d, 7 d na 28 d) ike, nwere ike si atọ mejupụtara elu arụmọrụ superplasticizer nke ihe mkpakọ ike bụ budata elu karịa nke oghere ihe mkpakọ ike., 3 d, 7 d na 28 d ike mkpakọ abawanye ọnụego dị elu ka 15%, 20% na 30% otu.Na mgbakwunye, ụdị kọnkịta nwere ike mkpakọ kacha elu na mbido mbụ bụ ihe agwakọta ya na polyhydroxyacid superplasticizer., nke nwere ike mkpakọ kacha elu mgbe 28 ụbọchị. Otú ọ dị, ihe mejupụtara naphthalene usoro superplasticizer nwere obere mkpakọ ike na mmalite ogbo, nke na-egosi na ọrụ ike mmalite ya adịghị mma.

3) Mmetụta nke superplasticizer na arụ ọrụ mgbawa n'oge nke kọmpụta agwakọta ọhụrụ

Mmeghachi omume anụ ahụ na kemịkalụ nwere ike ime n'etiti ciment na kọnkịta nwere ihe mgbakwunye., ebe n'ụdị ciment ọzọ, nnukwu mfu mkpọda nwere ike ime, ya mere ọ dịghị superplasticizer nke nwere mmetụta dị mma na ụdị ciment ọ bụla., ntụle nyocha nke a na-ejikarị gụnyere slump na ike, ma ọ dị mfe ileghara ihe kwụsiri ike olu, mfe ịkpalite n'oge shrinkage mgbape, nwere ike mee ngwangwa ihe mgbape, na-emetụta ịdịte aka na nchekwa nke ihe owuwu ụlọ. Site n'echiche nke ihe ndị na-emetụta mmalite mgbawa nke ihe., ewezuga ọsọ ifufe na ọnọdụ okpomọkụ, ụdị na ọnụọgụ ihe mgbakwunye bụkwa isi ihe.

4) Mmetụta nke superplasticizer na ịdịte aka nke ihe agwakọta ọhụrụ

Superplasticizer nwere mmetụta dị ukwuu na ịdịte aka nke ihe, tumadi maka: (1) mmetụta nke ntu oyi ntu oyi. N'ịtụle na obere mmiri-ciment ruru, ka mma kefriza-thawing iguzogide nke ihe ga-adị. Site n'ịgbakwụnye ihe na-ebelata mmiri na mmetụta ikuku-entraining, Enwere ike imeziwanye nguzogide na-ekpo ọkụ na-ekpo ọkụ 2%, na kacha ekwesịghị gafere 6%, ma ọ bụghị ya, ọ ga-emetụta ike na ịdịte aka nke ihe. Mmetụta nke enweghị ike ime ihe. Mmiri-ciment ruru bụ isi ihe na-emetụta adịghị ike nke ihe.. Ọ bụrụ na ọnụ ahịa ya karịrị 0.55, ọ ga-agafe hydration mmiri oriri nke simenti na-etolite ọtụtụ ọbara ọgbụgba oghere na ihe na-amụba permeability nke concrete. Ọ bụrụ na mmiri-ciment ruru dị oke nta., ọ ga-emetụta workability nke ihe, na ọ dịghị mma ka permeability nke ihe.(3) ihe na-eguzogide nchara nchara na mmetụta nke arụmọrụ carbonization site na nhọrọ nke superplasticizer, nwere ike budata belata carbonization ọnụego nke ihe, nyere aka melite arụmọrụ carbonization nke ihe, belata mmebi nke corrosion ígwè.

Cie-China.org bụ ndị na-eduga ụfụfụ ihe mgbakwunye na-enye ihe na-enye ihe na-emepụta ụfụfụ, superplasticizer,ụfụfụ ihe ike enhancer maka fechaa kọmpat, Ihe mgbochi CLC. Ọ bụrụ na ị na-achọ superplasticizer, biko nweere onwe gị kpọtụrụ anyị.