Warm-Mix vs Hot-Mix Sake yin amfani da su: Yanke zafin jiki da Carbon

Labari

Mayu 20, 2025

Sake yin amfani da zafi mai zafi yana gudana a 170-190 C, yayin da sake yin amfani da ruwan dumi zai iya ƙarewa a 120-140 C. Wannan labarin ya kwatanta su biyun a cikin girma biyar.

Tushen Zazzabi: Mix mai zafi 170-190°C, Cakuda mai dumi 120-140°C

Haɗin zafin cakuda kwalta shine ainihin ma'aunin da ke ƙayyade yawan kuzari, hayaki, da ingancin gini. Na al'ada hot-mix kwalta (HMA) yana aiki a cikin kewayon zafin jiki na 170-190 ° C, wanda aka kafa bisa ka'idoji guda biyu: na farko, dankowar bitumen a wannan zafin jiki ya yi ƙasa sosai (kimanin 0.1-0.3 Pa·s) don cika jimlar; na biyu, danshi a cikin tara zai iya ƙafe yadda ya kamata a wannan zafin jiki. Koyaya, 170-190 ° C kuma yana nufin babban amfani da makamashi - tsarin dumama kowane tonne na cakuda yana buƙatar kusan 30-40 MJ na makamashin mai. Warm-mix kwalta (WMA) yana rage yawan zafin jiki zuwa 120-140°C, raguwar kusan 30-50°C. Wannan raguwa ba kawai 'ƙasasshen dumama' ba ne - yana canza kaddarorin rheological na bitumen don cimma wannan shafi da aiki a ƙananan yanayin zafi. Mai sake farfadowa daga FangService yana samun wannan rage yawan zafin jiki ta hanyar 3-in-1 (dumi-mix + gyare-gyare + sabuntawa).

Tsarin Sinadari na Haɗin Dumi: Rage Dangantakar Bitumen

Fasahar Dumi-mix tana samun tasirinta ta hanyar rage ƙoƙon bitumen na zahiri a yanayin zafi. A cikin cakuda mai zafi na al'ada, dankowar bitumen yana sarrafa zafin jiki da farko - mafi girman zafin jiki yana nufin ƙananan danko. Fasahar dumama-mix tana samun sakamako iri ɗaya a ƙananan yanayin zafi ta hanyoyi biyu. Hanyar sinadarai: ƙara surfactants ko nau'in nau'in abin da ke canza yanayin jika a ma'aunin bitumen-aggregate interface, yana barin bitumen ya yadu da suturar ɓangarorin gaba ɗaya a ƙananan yanayin zafi. Hanya ta jiki: Cike ɓangarorin haske ta hanyar rejuvenator kai tsaye don rage ɗankowar bitumen gabaɗaya. Mai sake farfadowa daga FangService yana amfani da hanyoyi guda biyu a lokaci guda: ɓangaren dumi-dumi yana rage tashin hankali a saman haɗin haɗin bitumen-aggregate, yayin da sashin farfadowa ya cika ɓangarorin haske wanda a ciki ya rage dankon bitumen. Tare, suna kawo aikin bitumen a 120-140 ° C zuwa matakin da ya dace da yanayin zafi na al'ada a 170-190 ° C.

Makamashi da Fitarwa: Yadda Aka ƙididdige Rage 30%

Ajiye makamashi daga raguwar zafin jiki na 50°C ba layin layi na 50/190≈26% bane amma kusan 30%, saboda dalilai uku. Na farko, dumama tsari asarar zafi - kwalta shuka dumama tsari ne mara tsayayye-jihar canja wurin zafi, da kuma zafi asarar jimlar dumama daga yanayi (kimanin 20 ° C) zuwa manufa zafin jiki ne daidai da bambanci tsakanin manufa da na yanayi yanayin zafi. Lokacin da maƙasudin ya faɗi daga 190 ° C zuwa 140 ° C, bambancin zafin jiki ya ragu daga 170 ° C zuwa 120 ° C, kuma asarar zafi kadai yana raguwa da kusan 30%. Na biyu, ƙarfin zafi na bitumen - takamaiman zafin bitumen yana kusan 1.6-1.8 kJ/ (kg·K), don haka kowane raguwa na 1 ° C yana adana kusan 1.7 kJ kowace ton na bitumen. Na uku, ingancin zafin shuka - ainihin ingancin shuka yawanci yawanci 50-60% ne kawai, ma'ana sama da rabin zafi daga konewar mai yana ɓacewa ga muhalli. Haɗa dukkan abubuwa guda uku, sake yin amfani da dumi-dumi yana tanadin kusan kashi 30 cikin 100 na yawan man fetur idan aka kwatanta da sake amfani da gauraya mai zafi, tare da raguwar kusan kashi 30 cikin ɗari a cikin hayaƙin CO₂ da iskar gas.

Dacewar Shuka: Babu Babban Sake Bukata

Kuskure na yau da kullun shine cakuda dumi yana buƙatar kayan aiki na musamman. A zahiri, tsarin sake amfani da cakuda-dumi daga FangService yana da kyakkyawar dacewa tare da tsire-tsire na kwalta. Na farko, mai rejuvenator ne mai ruwa maida hankali ne a kan yin famfo kai tsaye a cikin cakude drum ta data kasance m metering tsarin - babu ƙarin ajiya, dumama, ko kayan aikin bayarwa. Na biyu, zafin jiki na 120-140 ° C yana da kyau a cikin kewayon sarrafawa na daidaitaccen tsire-tsire na kwalta - yawancin tsire-tsire an tsara su don matsakaicin yanayin zafi sama da 190 ° C, don haka 140 ° C shine kawai ƙananan wuri. Na uku, ƙaddamarwa na iya zama 10-20 ° C ƙasa da zafin jiki mai haɗuwa, watau 100-120 ° C, kuma a wannan yanayin zafin jiki, masu motsi na karfe ba su fuskanci ɗaukar kayan aiki ba - wani zafi na fasaha mai dumi-dumi na farko wanda tsarin farfadowa na zamani ya warware. Kawai daidaitawa da ake buƙata shine ƙara ƙaramin ƙara a lokacin haɗuwa (yawanci 5-10 seconds) lokacin da abun ciki na RAP ya wuce 60%, saboda ƙananan zafin jiki da saurin ɗaukar zafi na RAP - amma wannan daidaitawar tsari ne, ba gyaran kayan aiki ba.

Ayyukan Filin: Tagar Ƙarfafa, Daidaituwa, da Ƙarfin Farko

Sake yin amfani da dumama-mix yana nuna fa'idodi da yawa a cikin ginin filin. Na farko, mafi fadi taga taga - tun da bitumen yana kula da ruwa mai kyau a ƙananan yanayin zafi, lokacin da za a iya aiki daga fitarwa zuwa ƙaddamarwa na ƙarshe shine kusan 30-50% ya fi tsayi fiye da haɗuwa mai zafi, wanda ke da mahimmanci ga babban yanki ko aikin dare. Na biyu, mafi ingancin zafin jiki uniformity - ƙananan hadawa rage zafin jiki bambanci tsakanin surface da ciki na tara barbashi, rage localized compaction rashi lalacewa ta hanyar zafin jiki rabuwa. Na uku, saurin haɓaka ƙarfin farkon wuri - cakuda mai daɗaɗɗen gauraya zai iya isa ga ƙarfin shirye-shiryen zirga-zirga a cikin sa'o'i 1-2 bayan shimfidawa, yayin da cakuda mai zafi yawanci yana buƙatar sa'o'i 4-6 na sanyaya. Na hudu, an rage yawan hayaki da wari - ƙananan yanayin haɗewa yana yanke hayaƙin bitumen da sama da kashi 50%, yana inganta yanayin aiki don ma'aikatan gini da rage tasiri ga al'ummomin da ke kusa.

Kwatanta Kuɗi: Bayan Kudaden Man Fetur Kadai

Ba za a iya rage fa'idar tsadar sake amfani da gaurayawan gaurayawa zuwa tanadin mai kadai ba. Cikakken kwatancen farashi ya haɗa da abubuwa masu zuwa. Na farko, farashin man fetur - ajiyar kusan kashi 30%, ana fassarawa zuwa kusan yuan 15-25 da aka ajiye akan tan na cakuduwar a farashin mai na yanzu. Na biyu, farashin daurin bitumen - babban hada RAP yana rage sabbin amfani da bitumen, yana adana yuan 30-60 akan kowace tan (ya danganta da abun ciki na RAP da farashin bitumen). Na uku, jimlar farashi - sake amfani da tsohuwar tara a cikin RAP yana kawar da sayayya, jigilar kaya, da murkushe farashin jimlar budurwa. Na hudu, farashin ciniki na carbon - a kasuwannin carbon, raguwar fitar da kashi 30% yana fassara kai tsaye zuwa kiredit na carbon. Na biyar, samun nasarar aikin gini - fiɗaɗaɗɗen tagogi da haɓaka ƙarfi da sauri na rage lokacin aiki na inji. A hade tare, cikakken farashin sake yin cuɗanya-dumi yana da 25-40% ƙasa da na yau da kullun. Waɗannan alkalumman ba hasashe ba ne - sun dogara ne akan nazarin bayanan farashi daga ainihin ayyukan gine-gine da yawa.

Tsarin Yankewa: Lokacin Zaɓan Dumi Dumi, Lokacin da Cakuda Mai Zafi Har yanzu Ya Amfanu

Maimaita cakuda-dumi bai dace da kowane yanayi ba. Yanayi huɗu suna da ƙarfi don sake yin amfani da gauraya-dumi: na farko, abun ciki na RAP sama da 40% - haɓakar RAP da kanta yana buƙatar haɗuwa da ƙananan zafin jiki don hana haɓakar ƙullun tsofaffin bitumen; na biyu, gine-ginen titunan birane - ƙananan hayaki da wari suna da ƙarancin tasiri a cikin al'umma; na uku, dare ko ayyukan gaggawa - fiɗaɗɗen tagogi da buɗewa da sauri ga zirga-zirga; na hudu, ayyuka tare da tsauraran ƙayyadaddun iskar carbon - rage fitar da kashi 30% yana da fa'ida mai mahimmanci. Yanayi guda biyu inda za'a iya yin la'akari da haɗuwa mai zafi: na farko, abun ciki na RAP da ke ƙasa da 20% tare da matsananciyar farashi mai mahimmanci - a ƙananan haɗakar RAP, ƙarin farashi na cakuda mai dumi zai iya wuce ajiyar man fetur; na biyu, yankuna masu sanyi sosai - a yanayin zafi ƙasa da -30 ° C, ƙaddamar da cakuda-dumi na iya zama da wahala har yanzu. Gabaɗaya, don mafi yawan ayyukan gina titina, sake yin amfani da ruwan dumi shine mafi kyawun zaɓi idan aka kwatanta da gaurayawan zafi na al'ada.