Sima Portland Pungarehu Rere

Sima Portland
Pungarehu rere Ko te sima Portland e pā ana ki te whakakotahitanga o te sima Portland clinker me te pungarehu rere, i konatunatua ki te nui e tika ana o te gypsum, kātahi ka hurihia, ko te ingoa huna PF. Ko ngā rauemi sima waipēhi katoa i hangaia mai i te sima Portland clinker, te pungarehu rere me te nui e tika ana o te gypsum whenua ka kiia ko te pungarehu rere. Ko te nui o te pungarehu rere e tāpirihia ana ki te sima he 20%~40% te taumaha, ā, ko tōna kaha me ngā whakaritenga kaha i ia tau he rite tonu ki ērā o te sima Portland para.

Rauemi mata
He mea hanga tēnei i te sima Portland clinker me pungarehu rere, i konatunatua ki te nui e tika ana o te gypsum, kātahi ka hurihia. Waehere PF
Ko ngā rauemi sima waipēhi katoa i hangaia mai i te sima Portland clinker, te pungarehu rere me te nui tika o te gypsum whenua ka kiia ko te pungarehu rere. Ko te nui o te pungarehu rere i tāpirihia ki te sima he 20% ki te 40% te taumaha. Kāore e whakaaetia kia uru atu ki te para oumu kua whakakīia ki te hau e neke atu i te 1/3 o te tapeke o ngā rauemi whakauru. I tēnei wā, ka taea e te tapeke o ngā rauemi whakauru te eke ki te 50%, engari kaua te nui o te pungarehu rere e iti iho i te 20%, neke atu rānei i te 40%.
Ngā Āhuatanga
He matotoru te hanganga o te sima pungarehu rere, he iti te horahanga o roto, ā, he iti ake te kaha mimiti wai, ā, he iti te hiahia wai mō te whakamakuku o te sima, nō reira he iti te mimiti maroke o te sima pungarehu rere, ā, he iti hoki te ātete ki te pakaru. He pai. Hei tāpiri, he rite ki te sima whānui e konatunatua ana ki ngā ranunga hohe, he iti te wera whakamakuku, ā, he kaha te ātete ki te waikura.
Mahi
Ko ngā āhuatanga ahurei o te sima Portland pungarehu rere koia ēnei:
(1) He iti te kaha tōmua, ā, he nui te tere pikinga o te kaha tōmuri: he iti te kaha tōmua o te sima pungarehu rere, ā, ka tino heke te kaha tōmua i te pikinga o te ihirangi pungarehu rere. Nā te mea he tino pumau te tinana karaihe i roto i te pungarehu rere, ka tino puhoi te memeha me te whakangaro i ngā matūriki pungarehu rere e Ca(OH)2 i te wā o te tukanga whakamakuku o te sima pungarehu rere, nō reira ko te whanaketanga kaha o te sima pungarehu rere ka kitea nuitia i te wāhanga o muri mai. , he nui te tere pikinga o tōna kaha tōmuri, ā, ka taea e ia te neke atu i te kaha tōmuri o te sima Portland e rite ana.
(2) He pai te mahi me te iti o te whakahekenga maroke: Nā te mea he porowhita te nuinga o ngā matūriki pungarehu rere, he totoka hoki, ā, he iti te horahanga o te mata o roto me te wai mimiti ngota kotahi, he pai te mahi a te sima pungarehu rere, ā, he iti te whakahekenga maroke. , he āhuatanga o te kaha kume teitei me te ātete pai ki te pakaru. He painga mārama tēnei o te sima pungarehu rere.
(3) He ātete pai ki te waikura: he nui te ātete o te sima pungarehu rere ki te wai māori me te whanariki. Nā te whakakotahitanga o te SiO2 hohe i roto i te pungarehu rere me te Ca(OH)2, ka puta te waikura konupūmā silicate ina taurite. Ko te kukū rohe e hiahiatia ana (arā, te kawakore o te wāhanga wai) he iti iho i te mea e hiahiatia ana mō te taurite o te waikura konupūmā silicate i roto i te sima Portland noa, nō reira ka tino heke te tere horoi i roto i te wai māori, ā, ka pai ake te ātete o te sima. Te kaha ki te waikura wai māori me te ātete ki te kino o te whanariki.
(4) Te iti o te wera o te wai: He puhoi te tere o te wai o te sima pungarehu rere, ā, he iti te wera o te wai, ina koa ka nui te nui o te pungarehu rere i tāpirihia, ka tino kitea te whakahekenga o te wera o te wai.

Sima Portland
Ko ngā sima Portland clinker katoa he mea hanga ki te konupūmā silicate, te kōhatu papa, te para oumu pupuhi rānei he iti iho i te 5% te ihirangi, ā, ko ngā rauemi sima waipēhi i hangaia ki te gypsum i hurihia pai ka kiia ko te sima Portland. E mōhiotia whānuitia ana ko te sima Portland.
Whakarōpūtanga
E rua ngā momo o te sima Portland, ko te momo I o te sima Portland kāore he rauemi whakauru ka kiia ko te sima Portland, waehere P·I; ko te rauemi whakauru me te kōhatu kōhatu, te para oumu rānei kāore e neke ake i te 5% o te papatipu sima ka kiia ko te Momo II o te sima Portland, waehere P·2.
Te hanganga o te kohuke
Ko te hanganga kohuke matua o te sima Portland ko: tricalcium silicate, dicalcium silicate, tricalcium aluminate, me te tetracalcium ferric aluminate. Ka whakatau te tricalcium silicate i te kaha o te sima Portland i roto i ngā wiki e whā; ka puta te kaha o te dicalcium silicate i muri i ngā wiki e whā, ā, ka eke ki te kaha o te tricalcium silicate mō ngā wiki e whā i roto i te tau kotahi; ka tere ake te kaha o te tricalcium aluminate, engari he iti te kaha, ā, he wāhi nui tōna ki te kaha o te sima Portland i roto i ngā rā 1 ki te 3, i roto rānei i te wā roa ake; He iti te kaha o te sima tote waikawa.