Cov yam ntxwv ntawm kev siv thev naus laus zis sib xyaw gravel sealing yog tias ib qho khoom siv tuaj yeem nthuav tawm cov khoom sib txuas thiab pob zeb tib lub sijhawm. Lub asphalt thiab pob zeb yuav tsum tau muab tso rau hauv ib ob. Qhov kub ntawm qhov kub asphalt yog 140 ° C thaum cov khoom sib txuas yog txau, thiab qhov kub tuaj yeem lav tau siab tshaj 120 ° C thaum lub sij hawm sib txuas. Qhov kub asphalt poob qis heev. Lub sijhawm no, qhov fluidity ntawm asphalt binder tseem zoo heev, thiab thaj chaw sib txuas nrog lub pob zeb loj, uas txhim kho kev sib raug zoo nrog lub pob zeb. Lub zog ntawm pob zeb daim ntawv cog lus. Cov txheej txheem nto sealing tshuab feem ntau siv ob yam khoom sib txawv thiab ob txheej txheem rau kev sib kis. Xws li lub sijhawm siv sijhawm ntev yuav ua rau qhov kub ntawm asphalt poob li ntawm 70 ° C, thiab kev sib txuas ntawm pob zeb thiab asphalt yuav tsis zoo, ua rau lub pob zeb poob loj thiab cuam tshuam rau kev ua haujlwm ntawm cov txheej txheem sealing. .
Synchronous gravel sealing tshuab muaj cov yam ntxwv hauv qab no:
(1) Kev tiv thaiv dej zoo dua. Kev sib xyaw ua ke ntawm cov ntaub ntawv sib txuas hauv cov gravel seal txheej tuaj yeem sau cov kab nrib pleb me ntsis hauv txoj kev nto, txo cov kev cuam tshuam ntawm txoj kev nto, thiab ua kom cov kab nrib pleb tsis kam ntawm txoj kev nto, yog li txhim kho cov kev ua haujlwm ntawm txoj kev. nto.
(2) Zoo adhesion thiab anti-slip khoom. Asphalt los yog lwm yam khoom siv khi ua ke sib sau ua ke rau ntawm txoj kev qub. 1/3 ntawm cov aggregate tuaj yeem hu ncaj qha rau lub log tsheb. Nws roughness nce qhov kev sib txhuam coefficient nrog cov log tsheb, txhim kho adhesion thiab adhesion ntawm txoj kev nto. Slip tsis kam.
(3) Hnav tsis kam thiab durability. Cov pob zeb thiab asphalt kis tau ib txhij ua ib qho asphalt binder, thiab 2/3 ntawm qhov siab ntawm cov pob zeb hauv av nkag mus rau hauv asphalt, uas ua rau cov cheeb tsam sib txuas ntawm ob, thiab qhov chaw concave tuaj yeem tsim vim qhov kev nyiam tag nrho. lub zog ntawm asphalt binder. Nws yog sib xyaw ua ke nrog cov pob zeb kom tsis txhob poob ntawm cov pob zeb, yog li lub synchronous gravel seal muaj kev hnav zoo thiab ua haujlwm ntev. Qhov no kuj yog ib qho tseem ceeb rau synchronous gravel sealing tshuab kom ntev kev pab cuam lub neej ntawm txoj kev.
(4) Kev lag luam. Tus nqi-zoo ntawm ib txhij gravel sealing yog zoo dua li lwm txoj kev kho deg, yog li txo cov nqi kho txoj kev.
(5) Cov txheej txheem kev tsim kho yog yooj yim, kev tsim kho ceev ceev, thiab kev khiav tsheb tuaj yeem qhib rau lub sijhawm.