1. Qhov Zoo Tshaj Plaws ntawmPob zeb
Kev Ua Haujlwm Zoo Tshaj Plaws: Gravel feem ntau muaj lub zog compressive ntawm 60-200MPa. Cov yam ntxwv no ua rau nws muaj peev xwm txhim kho lub peev xwm ntawm cov pob zeb ua kom zoo dua qub, tso cai rau cov pob zeb ua kom ruaj khov txawm tias thaum nqa lub qhov hnyav ntawm lub tsev, kev thauj khoom sab nraud, thiab lwm yam kev ntxhov siab, ua kom lub neej ntev ntawm lub tsev.
Txhim khu kev ntseeg ruaj khov: Cov pob zeb tshwj xeeb ntawm cov pob zeb tuaj yeem tsim muaj kev sib txuam nrog cov cement mortar, ib yam li suav tsis txheeb me me "anchors", uas nruj nreem khi rau txhua qhov ntawm cov pob zeb, txhim kho kev ncaj ncees ntawm cov pob zeb thiab txo qhov kev pheej hmoo ntawm kev tawg thiab deformation.
Kev Ua Tau Zoo: Thaum cov pob zeb siv rau hauv lub hauv paus cushions, qhov khoob ntawm nws cov khoom tuaj yeem ua rau dej ntws zoo, tiv thaiv dej nag thiab dej hauv av los ntawm kev sib sau hauv lub hauv paus. Kev txo qis ntawm cov dej sib xyaw tuaj yeem zam qhov muag muag thiab kev sib haum xeeb ntawm cov av hauv paus, ua kom muaj kev ruaj ntseg ntawm lub tsev hauv paus thiab muab kev txhawb nqa txhim khu kev qha rau tag nrho lub tsev tsim.
2. Qhov tsis zoo ntawm Gravel hauv daim ntawv thov
Tsis zoo Gradation Stability: Ntuj pob zeb raug cuam tshuam los ntawm tej yam xws li cov chaw mining thiab geological tej yam kev mob, thiab muaj qhov sib txawv loj ntawm particle loj thiab gradation faib ntawm txawv batches ntawm gravel. Qhov gradation tsis ruaj khov no ua rau nws nyuaj rau kev tswj cov pob zeb sib xyaw kom raug, uas cuam tshuam rau cov khoom tseem ceeb ntawm pob zeb xws li lub zog thiab kev ua haujlwm.
Kev phom sij zais ntawm qhov tsis txaus Bonding Strength: Qhov saum npoo roughness ntawm qee qhov ntuj gravel yog tsawg, thiab thaj chaw sib txuas nrog cov cement paste yog txwv, uas yooj yim ua rau kev sib txuas tsis txaus. Qhov no yuav txo cov kev sib raug zoo ntawm cov pob zeb, thiab thaum raug rau sab nraud quab yuam, nws yuav ua rau kev sib cais ntawm cov aggregates thiab cement paste, cuam tshuam rau kev ruaj ntseg ntawm cov pob zeb.
Cov Khoom Uas Muaj Teeb Meem Ua Tau Zoo: Hauv qee qhov chaw, pob zeb ntuj yuav muaj cov khoom tsis zoo xws li av nplaum, organic teeb meem, thiab sulfides. Thaum cov khoom sib xyaw ua ke rau hauv pob zeb, lawv yuav muaj kev cuam tshuam tsis zoo nrog cov khoom siv cement lossis tsim cov kev sib txuas tsis muaj zog hauv cov pob zeb. Nyob rau hauv lub sij hawm ntev, qhov no yuav ua rau lub impermeability thiab Frost tsis kam ntawm cov pob zeb, cuam tshuam rau lub durability ntawm cov pob zeb.
3. Kev Txhim Kho Cov Txheej Txheem rau Kev Tsis Zoo ntawm Kev Siv Pob Zeb
Mechanized Screening kom ntseeg tau tias kev ua kom tiav: Qhia txog kev tshuaj ntsuam xyuas kev ua haujlwm, thiab faib thiab tshuaj ntsuam gravel los ntawm cov ntxaij vab tshaus nrog cov apertures sib txawv los xyuas kom meej tias cov gravel uas tau soj ntsuam muaj qhov sib txawv me me thiab tsis tu ncua thiab ruaj khov gradation. Kev ruaj khov gradation tuaj yeem ua rau cov pob zeb sib xyaw ua ke ntau dua, yog li ua kom ntseeg tau qhov sib xws thiab kev ntseeg siab ntawm kev ua vaj tse.
Cov txheej txheem ntxuav dej kom tshem tawm cov impurities: Txais cov txheej txheem ntxuav dej los kho cov pob zeb, siv cov kev cuam tshuam thiab kev ntxuav cov dej kom tshem tawm cov av nplaum, cov plua plav txuas rau cov pob zeb nto thiab cov organic teeb meem thiab lwm yam teeb meem uas muaj nyob hauv. Cov pob zeb tom qab ntxuav dej muaj qhov purity ntau dua, uas tuaj yeem zam qhov tsis zoo ntawm cov khoom tsis zoo ntawm lub zog ntawm cov pob zeb.
Kev siv cov pob zeb crushed thiab pob zeb sib xyaw: Hauv cov haujlwm tseem ceeb xws li siab - cov tsev nce siab thiab cov choj loj, kev sib xyaw ntawm cov pob zeb crushed thiab gravel nyob rau hauv ib qho kev faib ua feem yuav siv tau. Crushed pob zeb muaj lub zog siab thiab cov npoo thiab cov ces kaum, uas tuaj yeem ua rau qhov tsis zoo ntawm cov pob zeb. Meanwhile, tus nqi ntawm gravel kuj tsawg. Kev sib xyaw ua ke ntawm ob tuaj yeem ua tsis tau tsuas yog ua tau raws li qhov siab - lub zog yuav tsum tau ua ntawm pob zeb, tab sis kuj tsim nyog tswj tus nqi ntawm qhov project.
Admixtures rau Optimize Bonding Performance: Nyob rau hauv tus txheej txheem ntawm kev npaj pob zeb, ntxiv ib tug tsim nyog tus nqi ntawm admixtures (xws li binders, interface agents, thiab lwm yam) tuaj yeem txhim kho lub fluidity thiab viscosity ntawm cement paste, txhim khu lub peev xwm sib txuas ntawm cement paste thiab gravel nto, daws qhov teeb meem ntawm kev sib txuas tsis txaus los ntawm kev ua haujlwm tsis zoo ntawm cov pob zeb thiab pob zeb.