Choyamba, tanthawuzo lachitetezo chodzitchinjiriza cha phula la phula la konkire limayambitsidwa, ndipo kafukufuku wamakono, chitukuko ndi kagwiritsidwe ntchito ka chitetezo cha phula la phula la konkire kunyumba ndi kunja akufotokozedwa mwachidule. Njira zomangira zomwe zimagwiritsidwa ntchito nthawi zambiri zodzitetezera kumapangidwe a phula la konkire zimayambitsidwa, ndipo chithandizo cham'mbuyo ndi zinthu zina zofunika kwambiri zodzitetezera kumapangidwe a konkire ya phula zimawunikidwa ndikufotokozedwa mwachidule, ndipo chitukuko chamtsogolo chikuyembekezeka.

Kusamalira koteteza
Kukonzekera koteteza kumatanthawuza njira yokonza yomwe imayendetsedwa pamene njira yodutsamo isanawonongeke. Imawongolera momwe magwiridwe antchito amapangidwira ndikuchedwetsa kuwonongeka kwa phula la asphalt popanda kuwonjezera mphamvu yonyamula. Poyerekeza ndi njira zachikhalidwe zosamalira, kukonza zodzitetezera kumakhala kokhazikika ndipo kumafuna kukonzekera koyenera kuti mukwaniritse zomwe mukufuna.
Kuyambira m'chaka cha 2006, unduna wakale wa za Transport walimbikitsa kugwiritsa ntchito njira zodzitetezera m'dziko lonselo. M’zaka khumi zapitazi, ogwira ntchito yokonza misewu ikuluikulu m’dziko langa ayamba kuvomereza ndi kugwiritsira ntchito kukonza njira zodzitetezera, ndipo ukadaulo wodzitetezera wakula kwambiri. Munthawi ya "Mapulani a Zaka 12 za Zaka zisanu", gawo la kukonza zodzitetezera m'mapulojekiti okonza m'dziko langa likuwonjezeka ndi maperesenti asanu chaka chilichonse, ndipo zinapeza zotsatira zabwino kwambiri za misewu. Komabe, pakadali pano, ntchito yoteteza chitetezo sinakhwime, ndipo pali madera ambiri oti aphunzire. Pokhapokha pakudzikundikira kwakukulu ndi kufufuza komwe ukadaulo woteteza chitetezo ukhoza kukhala wokhwima komanso kupeza zotsatira zabwino zogwiritsa ntchito.
Njira zazikulu zopewera kukonza
M'dziko lakwathu kukonza uinjiniya wa misewu yayikulu, malinga ndi kukula ndi zovuta za ntchito yokonza, ntchito yokonza imagawidwa kukhala: kukonza, kukonza zazing'ono, kukonza sing'anga, kukonzanso kwakukulu ndi kukonzanso, koma palibe gulu losiyana la kukonza zodzitchinjiriza. zimakhudza kwambiri kukhazikitsidwa kwa ntchito zoteteza chitetezo. Choncho, m'tsogolomu, kukonza zodzitetezera kuyenera kuphatikizidwa muzokonza. Pakalipano, njira zomangira zomwe zimagwiritsidwa ntchito kunyumba ndi kunja pofuna kuteteza mapangidwe a phula la konkire kumaphatikizapo kusindikiza, slurry kusindikiza micro-surfacing, kusindikiza chifunga ndi kusindikiza miyala.
Kusindikiza kumaphatikizapo mitundu iwiri: grouting ndi grouting. Grouting ndikugwiritsa ntchito guluu waunjiniya kuti asindikize mwachindunji pamalo pomwe ming'alu imachitika pamsewu. Popeza ming'aluyo imasindikizidwa ndi guluu, kukula kwa ming'alu sikungakhale kwakukulu. Njira imeneyi ndi oyenera matenda ndi wofatsa matenda ndi yaing'ono ming'alu widths. Pokonza, gel osakaniza ndi viscoelasticity yabwino komanso kutentha kwapamwamba ayenera kugwiritsidwa ntchito pochiza ming'alu, ndipo ming'alu yomwe ikuwoneka ikufunika kuchitidwa nthawi. Kusindikiza kumatanthauza kutenthetsa gawo lomwe lawonongeka la msewu ndikutsegula, ndiyeno kugwiritsa ntchito sealant kusindikiza ma seams mu grooves.
Slurry kusindikiza ukadaulo wapamtunda waung'ono umatanthawuza njira yofalitsira zinthu zosakanizika zomwe zimapangidwa ndi kusakaniza mwala wina, phula la emulsified, madzi, ndi zodzaza pamsewu pogwiritsa ntchito slurry sealer. Njirayi imatha kusintha bwino misewu yamsewu, koma siyoyenera kuchiza matenda amsewu omwe ali ndi matenda akulu.
Ukadaulo wosindikizira wa nkhungu umagwiritsa ntchito phula la asphalt kupopera phula wosinthika kwambiri pamsewu kuti upangike wosanjikiza wopanda madzi. Msewu womwe wangopangidwa kumene pamwamba pamadzi wosanjikiza ukhoza kupititsa patsogolo kukana kwamadzi pamsewu komanso kuteteza chinyezi kuti chisawonongenso mkati.
Ukadaulo wa Chip seal umagwiritsa ntchito makina opoperapo opopera kuti agwiritse ntchito kuchuluka koyenera kwa phula pamsewu, kenako amayala miyala ya tinthu tating'ono pa phula, ndipo pamapeto pake amagwiritsa ntchito chogudubuza tayala kuti chizikulungitsa. Msewu wopangidwa ndi ukadaulo wa chip seal wasintha kwambiri magwiridwe ake odana ndi skid komanso kukana madzi.