Brand kasimende: indlela zisakhula

Ekucubunguleni into ezifana brand usimende, udinga ukugxila iziqondiso esisemthethweni, phakathi okuyizinto GOST30515-97 okuyinto uhlukanisa zonke ukuqinisa akhethekile civil. Izingxube Cementitious kungase kudingeke elisekela ezahlukene (ferrite, i-calcium aluminate noma Portland usimende clinker) futhi aqukethe amaphilisi ehlukahlukene amaminerali.

Futhi uzinake ukuthi amagama emikhiqizo ehlukahlukene edayiswa namaleveli ahlukahlukene usimende amandla compressive, ezahlukene sokwelapha isilinganiso (futhi ngokuvamile-bystrotverdeyushchie), izikhathi ezahlukene kulungiselelwa - kukhona inhlanganisela uqale lukhuni ngemizuzu engaphansi kuka-45 futhi lapho medlennoskhvatyvayuschiesya (ngaphezu kumahora angu-2).

Ngamunye brand kasimende kumele bahlangabezane eziningi nemingcele, kuhlanganise: ukwakheka ethize impahla, isikhathi ukuqina, amandla compressive, samonapryazheniyu, usimende ukuminyana test, ukwanda yomugqa, okuqukethwe amakhemikhali edingekayo (chlorine ion, nesibabule oxide, i-nitrous ka MG), izinga lamanzi ngokuhlukana , ukushisa kanye nezinye izici.

Funda mayelana indlela yokwakheka usimende ingxube kungaba ngegama lalo. Eningiliziwe emagama usimende izici ezinikezwe izivakashi ngenhla kanye GOST10178-85. Uma igama uqala kwi PC - lena sha kasimende esekelwe Portland usimende clinker, futhi uma SPC - ke thina slag ngokuqukethwe eliphezulu slag isisindo (20%).

Ngemva namagama aphelele noma esifushanisiwe izinombolo ezazisebenza zazingamakhulu okuyinto asho amandla compressive. Ukuze Portland isici uyakwazisa 600, 550, 500, 400, i-slag - izinombolo 500 kuya 300. Futhi, inombolo enkulu izithasiselo A0 (akukho izithasiselo) ukuze D20 elicacisiwe isihloko (izithasiselo - 20%). Kungaqukatha inkomba solidification okusheshayo (D), usimende hydrophobization futhi plastification ingxube (PL, GF), ukukhiqizwa kwanoma usimende clinker kwengoma kwesejwayelekile (H) kanye isixhumanisi iStandard elihambisana.

Ngokwesibonelo, i-brand usimende PTS550-D5-B-PL kuyinto usimende Portland ngezikhwepha compressive ka 550, ne-5% izithasiselo bystrozatverdevayuschim futhi plasticized.

Nge kwakhiwa isakhiwo kubaluleke kakhulu ukuthi zero umjikelezo imisebenzi Kwakuseshwa kahle. Ngokukhethekile kufanele inikwe isisekelo, okuyinto evame sasakhiwe ngokhonkolo. Ukhonkolo - inhlanganisela usimende, isihlabathi futhi amatshe. Brand Usimende isisekelo kufanele sibe namandla ngokwanele okusezingeni eliphezulu kokucindezelwa (400-500), futhi ayanda inombolo, ngaphansi kungaba inani ezinye izinto. Ngokwesibonelo, i-brand kasimende asele izinto 400 zithathwa ku isilinganiso 1 \ 3 \ 3, usimende grade 500 - 1 \ 4 \ 4, ngokulandelana.

Usimende sisetshenziselwa izinto olubamba amanzi kahle, okuyinto nakanjani kuthinta impahla yayo - ke ekugcineni uphelelwa amandla kushiwo. Ngakho-ke, ukukhetha uhlobo usimende ngenxa lomsebenzi wokwakha udinga ukubheka usuku ukwakhiwa nokucacisa izimo isitoreji, njengoba brand usimende 400 per isitoreji ngenyanga ilahlekelwa 10% ngamandla alo, futhi ezinyangeni eziyisithupha ukulahlekelwa 30% izici futhi babe usimende grade 280. Ngenxa yalesi usimende uzodinga Izithako ngaphezulu Nokho, asikwazi ukuqinisekisa ukuthi isisekelo kulokhu, sithola amandla adingekayo.