1. I te wa e rite ana te ahua o te ciment me te ahua o te paheketanga ki te raima kore, ka taea te whakaheke i te wai i te 10-15%, te kaha o te 28-ra ka taea te whakanui ake i te 10-20%, me te kotahi tau. Ka taea te whakanui ake i te kaha ki te 10%.
2. Tiaki sima Ina he rite te kaha me te paheketanga o te raima, tata ki te 10% o te ciment ka taea te whakaora, a ka taea te whakaora 30-40 toni o te ciment ma te whakamahi i te 1 tone o te kaihoko whakaheke wai.
3. Whakapai ake i te mahi o te raima I te wa e kore e rereke te ihirangi sima me te kohi wai o te raima, ka taea te piki ake te paheketanga o te raima kirihou iti mo te rua nga wa (mai i te 3-5 cm ki te 8-18 cm), me te kaha wawe tino tata ki tera o te raima kore i konatunatua.
4. I muri i te taapiri i te 0.25% lignoscelcium superplasticizer me te aukati whakamuri, i te wa e rite tonu ana te pakaru o te raima, ka whakaroa te wa waahi tuatahi o te ciment noa mo te 1-2 haora, ko te sima he 2-4 haora, ko te wa whakarite whakamutunga. o te sima noa he 2 haora, me te sima para he 2-3 haora.Mena ka piki ake te paheketanga me te kore e whakaheke i te kai wai, ka mau tonu ranei te paheketanga ano hei whakaora i te kai sima, ka nui ake te wa whakaroa i te whakaheke wai.
5. Ka taea e ia te whakaiti i te wa puta o te tihi exothermic o te wera whakamahana wawe o te ciment, e 3 haora mo te ciment noa, mo te 8 haora mo te sima para, me te neke atu i te 11 haora mo te dam ciment.He iti ake te pāmahana teitei o te tihi exothermic mo te sima noa, me te iti iho i te 3 ℃ mo te sima para me te raima para.
6. Ka piki ake te hau o te raima.Ko te ahua o te hau o te raima patea e pa ana ki te 1%, me te ihirangi hau o te raima i konatunatua ki te 0.25% te konupūmā rakau he 2.3%.
7. Te whakahekenga o te rere toto I raro i te ahua he rite tonu te paheketanga o te raima, te tere o te toto okonupūmā lignosulphonateka taea te whakaheke i te neke atu i te 30% ka whakaritea ki tera o te raima korekonupūmā lignosulphonate.I raro i nga ahuatanga ka noho tonu te owehenga wai-sima ka kore e rerekee ka piki ake te heke, ka heke ano te tere o te toto na te taonga hydrophilic okonupūmā lignosulphonateme te whakaurunga o te hau.
8. Ka whakatauritea ki te hunga karekau he kaihoko whakaheke wai, ko te mahi whakaheke maroke he tata ki te iti iho ranei i te wa tuatahi (1-7) ra, a ka piki paku i te wa o muri mai (haunga te hunga whakaora sima), engari ko te kaua e neke ake te uara whakanui i te 0.01% (0.01mm/m).
9. Whakapai ake i te kiato me te koretake o te raima.Mai i te B=6 ki te B=12-30.
10. Karekau he tote chlorine, karekau he kino te waikura ki te whakakaha.
Te wa tuku: Mei-16-2023