Inā ua nānā ʻoe i kekahi kahua kūkulu hale i kēia mau lā iho nei, ua ʻike paha ʻoe i ka leo like: hale hana hoʻohuihui ʻakipa liʻiliʻi i kēia, hale hana hoʻohuihui ʻakipa liʻiliʻi i kēlā. Akā no ke aha i hoʻolaha koke ʻia ai ka hype? I ka ʻōlelo maʻalahi, ʻae kēia mau ʻāpana i hoʻemi ʻia i nā hui paving liʻiliʻi e hana i ka hui wela ma ke noi—ʻaʻohe kali hou ʻana ma ka hale hana kalana he 40 mile ka mamao a i ʻole e uku ana i ka uku no kahi kalaka ʻaoʻao ʻekolu. ʻO ka hopena? ʻO nā ʻāpana pothole wikiwiki, nā papa hana alanui kalana paʻa, a me kahi palena waiwai olakino.
E pololei kākou i nā helu. ʻO ka hapa nui o nā hiʻohiʻona i hoʻokaʻawale ʻia he mini he 10-20 t ka nui, kūpono i loko o kahi pahu 40-ft, a hoʻopuka i 10-30 t o ka asphalt i hoʻopau ʻia i kēlā me kēia hola. He mea maʻalahi kēlā ke hoʻohālikelike ʻia me kahi hale kiaʻi paʻa 160 t/h, akā ua lawa ia no:
A, ʻeā, inā makemake ʻoe i kahi liʻiliʻi hou aku o ka tonnage, hiki iā ʻoe ke holo i kahi hoʻololi pālua-ʻaʻohe nui.
E lawelawe ka pahu Ø1.2 m × 5 m i ka makū 5% me ka ʻoluʻolu; e hoʻokuke iā ia i 8% a e ʻike ʻoe i kahi hāʻule nui o ka hana hola. E noi i ka mea hana e hōʻike iā ʻoe i ke kūlou —hoʻokahi ko lākou āpau .
Ma ʻEulopa, pono ʻoe i ka particulate ma lalo o 20 mg/m³, no laila ʻaʻole hiki ke kūkākūkā ʻia kahi hale ʻeke. Ma nā kuaʻāina ʻo Arkansas, hiki iā ʻoe ke pakele i kahi makani ʻino, akā e manaʻo i nā hoalauna huhū (a me ka uku paha).
ʻO ka pale paʻi PLC i kēia manawa he mea maʻamau, akā naʻe, hoʻouna mau kekahi mau mea kūʻai aku i nā kuapo hoʻololi e hōʻemi i ke kumukūʻai he $3 k. Inā ʻaʻole ʻoe e hauʻoli i ka nostalgia o nā makahiki 1990, e uku i ke kālā keu.
Ua holo mākou i kahi mea hahai kumukūʻai 12 mahina ma kahi ʻāpana 20 t/h e hana ana ma 50 km ma waho o Des Moines. Nā hopena:
| Kumukūʻai Mea | Hale Hana Kūʻai-mai-Kalana | Hale Hana Liʻiliʻi ma ka Pūnaewele |
|---|---|---|
| Mea hana (ʻāwili, bitumen, mea hoʻopiha) | $46 t | $38 t |
| Ka halihali (huakaʻi hele a hoʻi mai 25 km) | $8 t | $0 t |
| Ikehu (diesel + uila) | $0 t | $4 t |
| Hana (1 mea lawelawe + 2 mea kōkua) | $0 t | $3 t |
| Huina | $54 t | $45 t |
Ma ka hana ʻana he 8,000 tone i kēlā me kēia makahiki, he $72,000 ia o ka mālama kālā makahiki—ua lawa ia e uku ai i ke anakahi i loko o 18 mau mahina, ʻoiai inā hāʻawi nā uku paneʻe iā ʻoe i ka maka ʻaoʻao.
ʻAʻole loa. Pono ʻoe i kahi moena haʻahaʻa 40 t a me kahi ʻāʻī gooseneck no ka mea hoʻoili, akā ʻo ka wāwahi ʻana i ke alaloa e holo ana ma ke alaloa e hana mau ana ma lalo o ʻehā hola. E hoʻohālikelike i kēlā me hoʻokahi pule o ka hana crane no kahi hale hana paʻa 120 t/h, a e ʻike ʻoe i ke kumu e ʻakaʻaka nui ai nā keʻena alanui kalana.
No ka mea, hana wale ʻoe i nā mea āu e pono ai, ʻaʻohe ʻōpala hoʻi i ka mea kanu . I loko o ke kau e hōʻemi ana i ka CO₂ ma kahi o 6%—ʻaʻole ia he mea weliweli loa, akā kōkua ia i ka hoʻokō ʻana i nā pahuhopu hoʻomau o ke kūlanakauhale me ka ʻole o nā palapala keu. Eia kekahi, hiki i nā mea puhi hou ke holo ma ka 100% ʻaila wahie hana hou ʻia a i ʻole 30% ʻaila mea kanu i hana ʻia; e makemake nui kāu hui pilina lehulehu i kēlā helu.
Nūhou maikaʻi: he 20 mau minuke ka poni ʻana i kēlā me kēia lā, a ʻo ka ʻeha poʻo wale nō ka nozzle burner—e hoʻololi i kēlā me kēia 800 h a he gula ʻoe. ʻO ka hoʻoponopono nui makahiki (kāʻei, bearings, hoʻololi pale) e holo ana ma kahi o $4 k, he pīnati wale nō i hoʻohālikelike ʻia me kahi bila $50 k ma kahi hale kiaʻi 160 t/h. ʻAe, a e mālama mau i kahi motika haʻalulu keu; inā hāʻule ia i waena o ka hana, e ʻūlū ana ʻoe i ka hui wela me ka lima—e hilinaʻi mai iaʻu, ʻaʻole leʻaleʻa.
"Ua kūʻai mākou i kahi ʻāpana 15 t/h i ka makahiki 2020. I ka hopena o ka makahiki ʻelua, ua mālama mākou i ka lawa e kūʻai i kahi paver ʻelua. ʻO kā mākou minamina wale nō? ʻO ka loaʻa ʻole o ke kumu hoʻohālike 20 t/h—e piʻi koke mai ana ka ulu ʻana ma luna ou."
"Ua lōʻihi ka manawa o nā palapala ʻae ma mua o ka hoʻākoakoa ʻana, akā i ka manawa i hoʻomaka ai mākou, ua piʻi aʻe ka loaʻa kālā mai ka hana ʻāpana ma 38%. Ua hoʻopiʻi nā hoalauna e pili ana i ka walaʻau, no laila ua hoʻohui mākou i nā panela leo—ua hoʻoponopono ʻia ka pilikia."
"He ʻino ke aniau ma ʻaneʻi; ua uku ka hale hana liʻiliʻi nona iho i loko o 14 mau mahina no ka mea hiki iā mākou ke pale aku i nā puka makani ua a hoʻokō mau i nā koi o ke kūlanakauhale. Eia kekahi, makemake nā keikikāne i ke koho keʻena hoʻomehana—he mea hoʻololi pāʻani."
Eia ka mea hoʻonāukiuki: hāʻawi kekahi poʻe kūʻai aku i nā kumukūʻai haʻahaʻa loa a laila nalowale koke ma mua o nā donuts manuahi ma kahi hālāwai palekana. E noi no:
Inā kānalua ka ʻelele kūʻai aku, e hele wāwae—nui nā iʻa i ke kai o nā mea kanu liʻiliʻi.
Inā ʻo kou makemake makahiki no ka hoʻohuihui wela ma waena o 5 000 tone a me 25 000 tone, a ʻoi aku ke kumukūʻai o ka lawe ʻana mai kahi hale kūʻai kokoke loa ma mua o $7 tone, he mea maʻalahi loa kahi hale hana hoʻohuihui asphalt liʻiliʻi . E hoʻohui i ka wikiwiki o ka hoʻololi ʻana, nā hōʻoia ʻōmaʻomaʻo, a me nā pono haʻaheo o ke kūʻokoʻa ponoʻī, a e ʻoi aku ka ʻono o ka ʻaelike. E hoʻomanaʻo wale e kikoʻī pololei, e ninini i kahi papa kūpono, a e mālama i kēlā motika keu ma ka papa—a laila e nānā i ka piʻi ʻana o kāu mau palena i ka wā e hoʻomau nei ka hoʻokūkū i ka laina ma ka puka o ke kalana.