Yuav Ua Li Cas Tshawb Pom Cov Pob Zeb Slump? Tej yam uas cuam tshuam rau Slump ntawm pob zeb

Kev kuaj pob zeb

Cov cuab yeej kuaj

Standard slump cone thiab mos txwv-puab tamping pas nrig ua los ntawm hlau, duav, kav, trowel, tshuav scale, thiab lwm yam.

Cov txheej txheem xeem

(1) Moisten lub slump cone thiab lwm yam cuab yeej, thiab muab lub khob hliav qab rau ntawm ib tug nruj, tsis-absorbent, kab rov tav nto. Kauj ruam ntawm ko taw pedals kom lub pob zeb poob rau hauv qhov chaw ruaj khov thaum lub sij hawm txhaws.

(2) Sau cov qauv pob zeb rau hauv lub khob hliav qab hauv peb txheej, nrog rau qhov siab ntawm txhua txheej yog 1/3 ntawm lub khob hliav qab qhov siab. Txhua txheej yuav tsum tau tamped 25 zaug nrog lub pas nrig tamping, spiraling los ntawm sab nraud mus rau qhov chaw, faib cov tshuab sib npaug. Cov txheej hauv qab yuav tsum tau tamped mus rau qhov tob tob, thaum lwm ob txheej yuav tsum nkag mus rau saum npoo ntawm txheej hauv qab no. Sab saum toj txheej ntawm pob zeb yuav tsum dhau lub khob hliav qab. Yog hais tias lub pob zeb nyob hauv qab ntawm ntug thaum lub sij hawm tamping, nws yuav tsum tau muab ntxiv. Tom qab tamping txheej saum toj kawg nkaus, cov pob zeb ntau dhau yuav tsum tau ntaus tawm thiab smoothed nrog ib tug trowel.

(3) Tom qab tshem tawm cov pob zeb ntau dhau ntawm cov npoo thiab lub hauv paus ntawm lub khob hliav qab, nqa lub khob hliav qab vertically thiab tsis tu ncua li ntawm 5 mus rau 10 vib nas this. Cov txheej txheem los ntawm kev sau mus rau kev nqa lub khob hliav qab yuav tsum tau txuas ntxiv thiab ua tiav hauv 150 vib nas this.

(4) Tom qab lifting lub slump cone, ntsuas qhov sib txawv nyob rau hauv qhov siab ntawm lub sab saum toj ntawm lub khob hliav qab thiab lub siab tshaj plaws point ntawm lub pob zeb qauv, uas yog tus nqi slump ntawm cov pob zeb sib tov. Yog tias cov pob zeb tawg los yog txiab tom qab lub khob ntim tau nqa, yuav tsum tau coj mus kuaj tshiab. Yog tias qhov kev sim thib ob tseem ua rau muaj kev sib tsoo lossis tawg, nws qhia tias muaj kev ua haujlwm tsis zoo, thiab qhov no yuav tsum tau sau tseg rau kev siv.

(5) Saib xyuas kev sib koom ua ke thiab dej tuav ntawm lub pob zeb:

Cohesiveness: Maj mam coj mus rhaub rau sab ntawm lub pob zeb uas slumped nrog tus pas nrig tamping. Yog hais tias lub khob hliav qab maj mam txo qis, nws qhia tau hais tias zoo cohesiveness. Yog hais tias lub khob hliav qab, tawg, los yog qhia pom tias muaj kev sib cais, nws qhia tau hais tias tsis zoo cohesiveness.

Kev tuav dej: Qhov no yog ntsuas los ntawm tus nqi ntawm slurry uas seeps tawm ntawm qhov sib tov. Thaum lub slump cone yog lifted, yog hais tias ib tug loj npaum li cas ntawm slurry seeps tawm hauv qab thiab cov aggregate raug vim slurry poob, nws qhia tau hais tias tsis zoo dej tuav ntawm lub pob zeb sib tov. Yog tias me me los yog tsis muaj slurry seeps tawm hauv qab, nws qhia tau tias dej tuav tau zoo.

Tej yam cuam tshuam rau pob zeb slump

(1) Aggregate Grading nyob rau hauv pob zeb: Kev muab qhab nia ntawm cov aggregate hauv pob zeb cuam tshuam rau qhov poob qis. Rau tib cov ntsiab lus dej, qhov slump ntawm pob zeb nrog nplua aggregate yog qis dua li nrog coarse aggregate vim qhov sib txawv ntawm cov txheej txheem dej thiab cement ntawm ntxhib thiab nplua aggregates ntawm qhov sib npaug.

(2) Cov ntsiab lus dej hauv pob zeb: Qhov sib txawv ntawm cov ntsiab lus dej muaj qhov tshwm sim ntawm qhov poob qis. Yog tias kev hloov pauv hauv cov ntsiab lus dej ntawm cov xuab zeb tsis suav nrog thaum sib xyaw, nws yuav cuam tshuam rau cov pob zeb tawg.

(3) Cement Kub: Qhov kub ntawm cov cement feem ntau saib xyuas los ntawm cov neeg ua haujlwm tsim kho. Qhov kub ntawm cov cement tsis tsuas yog nce qhov kub ntawm cov pob zeb xwb tab sis kuj txo qhov kev poob qis vim tias cov cement kub absorbs dej ntau dua.

(4) Scale Measurement yuam kev: Qhov tseeb ntawm cov dej thiab cov cement nplais cuam tshuam rau qhov poob qis. Yog hais tias qhov hnyav deviations tsis ruaj khov, nws yuav nyuaj los tswj qhov poob qis.

(5) Tus nqi ntawm Admixture: Tus nqi ntawm admixture siv ncaj qha cuam tshuam rau qhov poob qis. Txhawm rau ua tiav cov txiaj ntsig xav tau, tus nqi ntawm cov khoom sib xyaw yuav tsum ua kom zoo ib yam thaum lub sijhawm tsim khoom.

(6) Lub cev qhuav dej ntawm gypsum hauv Cement: Thaum sib tsoo, qhov kub nce tuaj yeem ua rau cov gypsum hauv cov cement dehydrate rau hauv hemihydrate gypsum. Thaum ntxiv dej rau cov cement, lub hemihydrate gypsum sai sai rehydrates los ua dihydrate gypsum, txo cov flowability ntawm cov pob zeb thiab cuam tshuam cov slump.

(7) Compatibility ntawm Admixture nrog Cement: Muaj ib qho teeb meem sib haum xeeb ntawm cov hom kev sib xyaw ua ke thiab cov cement ntau yam. Kev sib raug zoo tsis zoo ntawm cov khoom sib xyaw thiab cov cement tuaj yeem cuam tshuam loj rau cov dej ntws ntawm cov pob zeb, ua rau poob qis.

(8) Cement Sib tsoo Fineness: Qhov zoo ntawm cov cement cuam tshuam rau tus qauv kev xav tau dej sib xws. Feem ntau, qhov loj dua qhov chaw tshwj xeeb ntawm cov cement, qhov xav tau dej ntau dua. Cov cement uas muaj cov ntaub ntawv pozzolanic feem ntau muaj thaj chaw loj tshwj xeeb, ua rau kom muaj dej ntau dua thiab qis qis dua ntawm tib qhov dej-cement piv. Kev hloov pauv hauv cov cement fineness tuaj yeem ua rau muaj kev hloov pauv hauv cov pob zeb tawg.

(9) Lub Sijhawm Teeb Meem txawv txav: Thaum lub sij hawm clinker calcination, cov kev hloov hauv cov ntsiab lus ntawm qee qhov ceev ceev cov zaub mov tuaj yeem ua rau lub sijhawm teeb tsa tsis zoo (txawm tias nrawm dhau los yog qeeb dhau), uas ua rau muaj kev hloov pauv loj hauv cov pob zeb tawg.