Analysis ntawm International Standards
Qhov tseem ceeb thoob ntiaj teb cov qauv zoo raugravel thiab crushed pob zebmuaj lawv tus kheej tsom, sib koom ua cov qauv hauv paus ntawm kev lag luam. ISO 14688, tus qauv tseem ceeb tsim los ntawm International Organization for Standardization, faib gravel rau hauv cov qhab nia zoo, nruab nrab thiab ntxhib raws li qhov loj me, muab cov ntaub ntawv sib koom ua ke rau kev faib pob zeb thoob ntiaj teb, uas txhawb kev lag luam thiab kev sib pauv ntawm ntau lub teb chaws thiab cheeb tsam. ASTM D4791 kom meej meej qhia cov ntsiab lus ntawm flaky hais, yuav tsum tau tsawg dua los yog sib npaug rau 15%. Qhov kev ntsuas no ncaj qha cuam tshuam rau qhov fluidity thiab lub zog ua haujlwm ntawm cov khoom sib xyaw hauv cov pob zeb, ua kom muaj kev ruaj ntseg ntawm cov pob zeb ua vaj tse.
Lub EU tus qauv EN 12620 tso rau pem hauv ntej cov kev cai nruj ntawm crushing Performance index ntawm qhob aggregates, qhia tias crushing Performance index tsawg dua los yog sib npaug rau 20%. Lub crushing Performance index yog ib qho tseem ceeb parameter los ntsuas lub peev xwm ntawm aggregates los tiv thaiv crushing. Qhov qis crushing Performance index txhais tau hais tias aggregates tsis yooj yim rau kev tawg thaum raug rau sab nraud quab yuam, uas tuaj yeem ua kom zoo dua qub ntawm cov pob zeb ua vaj tse. Tuam Tshoj tus qauv GB / T 14685 txhawb kev tswj cov av nkos hauv cov khoom sib xyaw, vim tias cov av nkos ntau dhau yuav cuam tshuam rau kev sib koom ua ke ntawm cov khoom sib xyaw thiab cov cement paste, txo lub zog thiab durability ntawm pob zeb. Los ntawm nruj txwv tsis pub cov av nkos, Tuam Tshoj tus qauv muab kev lees paub zoo rau kev tsim kho vaj tse hauv tsev.
Kev daws qhov sib txawv hauv cheeb tsam
Vim qhov sib txawv ntawm ib puag ncig ntuj thiab cov yam ntxwv ntawm engineering nyob rau hauv ntau cheeb tsam, cov kev xav tau zoo rau cov pob zeb thiab cov pob zeb crushed kuj qhia pom cov yam ntxwv hauv cheeb tsam, thiab cov tuam txhab lag luam yuav tsum tau daws cov kev sib txawv no pertinently. Vim nws cov qauv geological tshwj xeeb, California hauv Tebchaws Meskas muaj kev txwv nruj ntawm cov xov tooj cua ntawm cov sib sau ua ke, xav kom lawv cov xov tooj cua tsawg dua lossis sib npaug li 0.1mSv / xyoo kom ntseeg tau tias tib neeg noj qab haus huv thiab ib puag ncig kev nyab xeeb. Qhov no xav kom cov tuam txhab lag luam yuav tsum ua nruj me ntsis tshawb nrhiav cov khoom siv raw khoom thaum muab cov khoom lag luam rau California thiab xaiv cov peev txheej hauv kuv qhov uas ua tau raws li qhov yuav tsum tau ua.
Cov cheeb tsam Middle East muaj huab cua qhuav, thiab cov av thiab dej muaj cov sulfate siab. Yog li ntawd, lub cheeb tsam no tseem ceeb heev rau cov sulfate yaig tsis kam ntawm aggregates. Sulfate yaig tuaj yeem ua rau cov kab mob xws li nthuav dav thiab tawg ntawm cov pob zeb, cuam tshuam rau lub neej kev pab cuam ntawm qhov project. Txhawm rau ua kom tau raws li qhov xav tau ntawm kev lag luam Middle East, cov tuam txhab yuav tsum tau txais cov txheej txheem tsim khoom tshwj xeeb thiab cov txheej txheem kev kho cov khoom siv los txhim kho cov sulfate yaig tsis kam ntawm aggregates, xws li nruj me ntsis tswj cov ntsiab lus impurity thaum crushing los yog kev kho deg ntawm aggregates.
Txhim kho ntawm Kev Tshawb Fawb Technology
Nrog rau kev txhim kho ntawm kev tshawb fawb thiab thev naus laus zis, kev tshawb nrhiav thev naus laus zis ntawm pob zeb thiab pob zeb crushed tau hloov kho tas li, muab kev txhawb zog rau kev siv nruj ntawm cov qauv zoo. Daim ntawv thov ntawm tus qauv ntxaib digital yog qhov tseem ceeb hauv kev tshawb nrhiav thev naus laus zis. Nws tsim ib qho chaw tsim khoom thiab tshawb pom virtual los simulate thiab kwv yees cov cim tseem ceeb xws li kev sib sau ua ke, ua kom cov qhab nia tsim nyog rau 98.7%. Tus qauv ntxaib digital tuaj yeem tawm tswv yim ntau yam kev hloov pauv hauv cov txheej txheem tsim khoom tiag tiag- lub sijhawm, pab cov tuam txhab kho cov txheej txheem tsim khoom raws sijhawm kom ntseeg tau tias kev ruaj ntseg ntawm cov khoom zoo.
Kev siv laser particle loj analyzers tau pom tau hais tias micron -qib precision nrhiav kom tau ntawm aggregate particle loj. Piv nrog rau txoj kev tshuaj ntsuam ib txwm, laser particle loj analyzers muaj qhov zoo ntawm kev tshawb nrhiav ceev ceev, siab precision thiab zoo rov ua tau zoo, thiab tuaj yeem cuam tshuam ntau qhov cuam tshuam qhov loj me ntawm cov khoom sib xyaw. Qhov no muab kev txhim khu kev qha txhais tau tias rau cov lag luam kom nruj tswj cov khoom zoo thiab ua tau raws li qhov xav tau ntawm cov qauv sib txawv. Nyob rau tib lub sijhawm, cov cuab yeej tshawb nrhiav ntse tseem tuaj yeem paub txog kev sau cov ntaub ntawv tsis siv neeg thiab tshuaj xyuas, txhim kho kev tshawb pom kev ua haujlwm thiab txo cov neeg ua yuam kev.
Standard Comparison thiab International Cases
Sab-los ntawm-Side Comparison ntawm ISO, ASTM, EN Standards
ISO 14688 tsom rau kev faib cov pob zeb los ntawm qhov loj me, muab cov txheej txheem dav dav rau kev faib thoob ntiaj teb.
ASTM cov qauv, xws li ASTM D4791, them nyiaj ntau dua rau cov yam ntxwv ntawm cov khoom sib xyaw, nrog cov kev cai meej ntawm cov khoom tsis zoo.
TS EN 12620 Cov khoom siv sib xyaw ua ke ntawm cov pob zeb sib xyaw, tshwj xeeb tshaj yog cov crushing Performance index.
Kev Paub Txog: Kev Tshawb Nrhiav Qhov Sib txawv ntawm Flakiness Index thiab Shape Index
Flakiness Index feem ntau ntsuas qhov kev faib ua feem ntawm cov khoom nrog qhov sib piv loj (thickness mus rau ntev), qhia txog qhov flatness ntawm cov khoom. Shape Index yog ib qho kev qhia ntau dua, xav txog tsis yog qhov sib piv nkaus xwb tab sis kuj muaj lwm yam zoo li cov yam ntxwv xws li angularity, muab kev ntsuam xyuas tag nrho ntawm cov duab particle.
International Case
Ib txoj haujlwm Saudi tau txais cov cuab yeej siv pob zeb pob zeb kom ua tau raws li British BS 8004 tus qauv tsim. Los ntawm kev tswj xyuas qhov zoo ntawm cov pob zeb siv hauv cov pawg, suav nrog qhov loj me ntawm cov khoom faib, crushing Performance index thiab huv si, lub hauv paus kev kho mob ua tau raws li cov kev cai nruj ntawm BS 8004, ua kom muaj kev ruaj ntseg thiab kev nyab xeeb ntawm qhov project qauv. Cov ntaub ntawv no qhia tau hais tias ua raws li cov qauv kev ua tau zoo thoob ntiaj teb yog qhov tseem ceeb rau kev ua haujlwm zoo ntawm cov haujlwm engineering thoob ntiaj teb.