1. Cothisa iintanda zokubonisa
① Ukuqhekeka okubonakalayo kubangelwa kukuxinana koxinzelelo kwi-asphalt yokwaleka ngaphezulu komgangatho wekhonkrithi endala ngenxa yokufuduswa okukhulu komphezulu wekhonkrithi endala kufutshane namalungu okanye iintanda. Ibandakanya ukufuduswa okuthe tye okubangelwa lutshintsho kwiqondo lobushushu kunye nokufuma, kunye nokufuduka okuthe nkqo kokucheba okubangelwa ngumthwalo. Eyangaphambili iphumela kuxinzelelo lwe-tensile olugxininisiweyo kwi-asphalt engaphezulu kwe-joint okanye i-crack; Le yokugqibela ibangela ukuba i-asphalt yalekwe ngaphezulu kwejoyinti ibe namava oxinzelelo olukhulu lwe-flexural tensile kunye noxinzelelo lokucheba.
②Ngenxa yokuba i-modulus ye-geogrid inkulu kakhulu, ifikelela kwi-67Gpa, isetyenziswe njenge-interlayer enzima kunye nokuqina okuphezulu kwi-asphalt yalekayo. Umsebenzi wayo kukuthintela uxinzelelo kunye nokukhulula uxinzelelo. Kwangaxeshanye, isetyenziswa njenge asphalt izinto zokuqinisa ikhonkrithi ukuze kuphuculwe ulwakhiwo lokwaleka Ukumelana ne-tensile kunye ne-shear kungancitshiswa ukufezekisa injongo yokunciphisa iintanda. Uqheliselo lubonise ukuba amandla okuqhekeka ahambelanayo okuqhekeka okuthe tye okutshintshileyo kwicala anokuhanjiswa ngeemitha eziyi-0.6 ukusuka kwindawo yawo yokuqala, kunye nezixhobo zokuqinisa ezinobubanzi obungaphezulu kwe-1.5 yeemitha zinceda ekuqinisekiseni ukuba amandla achithwa ngokupheleleyo macala omabini ukuqhekeka.
2. Ukuqhekeka okuchasene nokudinwa
①Umsebenzi ophambili we-asphalt yokwaleka kwipavumente endala yesamente kukuphucula umsebenzi wokusetyenziswa kwendlela yabahambi ngeenyawo, kodwa ayinagalelo lininzi kwisiphumo sokuthwala. Ipavumente eqinileyo yesamente phantsi kwesigqubuthelo isadlala indima ebalulekileyo. Ukwaleka kwe-asphalt kwipavumente yekhonkrithi endala yahlukile, i-asphalt eyongeziweyo iya kuthwala umthwalo kunye ne-asphalt endala yekhonkrithi. Ngoko ke, ukongeza kwiingqungquthela zokubonisa, ukuphazamiseka kokukhathala kuya kwenzeka kwakhona ngenxa yefuthe lexesha elide lemithwalo xa i-asphalt overlay yenziwa kwiipavements zekhonkrithi ye-asphalt. Senza uhlalutyo loxinzelelo kwimeko yomthwalo we-asphalt yokugqithisa i-asphalt kwi-pavement yekhonkrithi endala: ekubeni i-asphalt yophahla iyindawo eguquguqukayo eneempawu ezifanayo kunye ne-asphalt overlay, xa iphantsi komthwalo, umgangatho wendlela uya kugoba. Shen. Umaleko we-asphalt odibana ngokuthe ngqo nevili uphantsi koxinzelelo, kwaye kwindawo ngaphandle komda womthwalo wevili, umaleko womphezulu uphantsi koxinzelelo. Ekubeni iipropati zamandla eendawo ezimbini ezigxininisiweyo zihluke kwaye zisondele komnye nomnye, i-Junction yendawo yamandla, oko kukuthi, utshintsho olukhawulezayo lwamandla, luxhomekeke kumonakalo. Ukutshatyalaliswa kokukhathala kwenzeka phantsi kokulayisha ixesha elide.
② I-fiberglass geogrid inokusasaza olu xinzelelo lukhankanywe ngasentla kunye noxinzelelo loxinzelelo kwi-asphalt surface layer, kwaye yenze indawo ye-buffer phakathi kweendawo ezimbini ezigxininisiweyo, apho uxinzelelo lutshintsha ngokuthe ngcembe endaweni yequbuliso, ukunciphisa impembelelo yoxinzelelo ngequbuliso kwiNtshabalalo. yokwaleka kwe-asphalt. Kwangaxeshanye, i-elongation ephantsi ye-glass fibre geogrid inciphisa ukuphambuka kwendlela yokuhamba kwaye iqinisekisa ukuba i-pavement ayiyi kudlula kwi-deformation yenguqu.
3. Ubushushu obuphezulu berutting
①Ikhonkrithi yeasphalt ineempawu zerheological kubushushu obuphezulu, obubonakaliswa: umphezulu wendlela ye asphalt uyathambile kwaye uncangathi ehlotyeni; phantsi kwesenzo somthwalo wesithuthi, indawo egxininisiweyo igxininiswe, kwaye indawo ye-asphalt ayikwazi ukubuyisela ngokupheleleyo kumthwalo emva kokuba umthwalo wesithuthi ususwe Ngaphantsi kwesenzo sokuphindaphinda ngokuphindaphindiweyo kwesithuthi, i-deformation yeplastiki iyaqhubeka iqokelela, yenza i-ruts. Emva kokuhlalutya isakhiwo somgangatho we-asphalt surface, sinokwazi ukuba ngenxa yeempawu ze-rheological zekhonkrithi ye-asphalt phantsi kobushushu obuphezulu, akukho ndlela kuluhlu olungaphezulu olunokuthintela ukuhamba kwee-aggregates kwikhonkrithi ye-asphalt xa ilayishiwe. okubangela ukuhamba kwe-asphalt surface layer, Esi sesona sizathu siphambili sokwenziwa kwee-ruts.
②Sebenzisa i-fiber geogrid yeglasi kumphezulu we-asphalt, odlala indima yamathambo kumaleko womphezulu we-asphalt. I-aggregate kwikhonkrithi ye-asphalt ihamba ngeegridi, yenza inkqubo edibeneyo yokudibanisa i-mechanical, ukuthintela ukuhamba kwe-aggregate, kunye nokwandisa amandla okubopha i-lateral kwi-asphalt surface layer. ukutyhala, ukuze udlale indima ekuxhathiseni ukurula.
4. Melana nokuqhekeka kobushushu obuphantsi
①Iindlela ze asphalt kwiindawo ezibandayo kakhulu, iqondo lobushushu bomphezulu ebusika likufutshane nobushushu bomoya. Ngaphantsi kweemeko ezinjalo zobushushu, ikhonkrithi ye-asphalt iyancipha xa kubanda, okukhokelela kuxinzelelo olunzima. Xa uxinzelelo lwe-tensile ludlula amandla obunzima bekhonkrithi ye-asphalt, ukuqhekeka kuya kwenzeka, kunye nokuqhekeka kuya kwenzeka kwiindawo apho iintanda zigxininiswe, ezibangela izifo. Ngokombono wezizathu zokuqhekeka, indlela yokwenza amandla ekhonkrithi ye-asphalt ukumelana noxinzelelo lwe-tensile isitshixo sokusombulula ingxaki.
②Ukusetyenziswa kwegilasi yefiber geogrid kumphezulu we-asphalt kuphucula kakhulu amandla okuqina ekhonkrithi ye-asphalt, enokumelana noxinzelelo olukhulu ngaphandle komonakalo. Ukongeza, nokuba uxinzelelo kwindawo apho uqhekeko lwenzeka lugxininise kakhulu ngenxa yeentanda kwindawo yendawo, luya kunyamalala ngokuthe ngcembe ngokusasazwa kwefiber yegilasi yegilasi, kwaye ukuqhekeka akusayi kuphinda kuphuhliseke kube kukuqhekeka. Xa ukhetha i-glass fiber geogrid, ukongeza kwisalathisi sokusebenza kwayo kufuneka ihlangabezane neemfuno zetheyibhile engentla, ingqalelo ekhethekileyo kufuneka ihlawulwe ukuqinisekisa ukuba ububanzi bayo abukho ngaphantsi kwe-1.5m, ukuze ihlangabezane nemfuneko yokuba inomnqamlezo owaneleyo. indawo yecandelo ukulawula iintanda ezibonisa njenge-interlayer. Ukuchitha ngokupheleleyo amandla okuqhekeka; ngelo xesha, ubungakanani be-mesh kufuneka bube yi-0.5 ukuya ku-1.0 amaxesha obuninzi be-particle ye-asphalt surface layer material, enceda ukufezekisa ubuninzi be-shear adhesiveness kunye nokukhuthaza ukudibanisa kunye nokuvalelwa.
Ixesha lokuposa: Oct-08-2022