Ukadaulo wa Gravel seal ndi njira yomanga yopyapyala yomwe imagwiritsidwa ntchito kukhazikitsa magwiridwe antchito amsewu. Njira yoyambira ndiyo kufalitsa kuchuluka koyenera kwa phula la phula mofanana pamsewu kudzera pazida zapadera, kenako kugawira miyala yokhala ndi tinthu tating'ono ting'onoting'ono tomwe timapanga pa asphalt wosanjikiza, kenako ndikugudubuza kuti pafupifupi 3/ 5 ya tinthu tating'onoting'ono tating'ono imayikidwa. Phula la phula.
Ukadaulo wosindikizira miyala uli ndi zabwino zake zotsutsana ndi kuzembera komanso kusindikiza kwamadzi bwino, mtengo wotsika, ukadaulo womanga wosavuta, komanso liwiro lomanga, motero ukadaulo uwu umagwiritsidwa ntchito kwambiri ku Europe ndi United States ndi mayiko ena.

Tekinoloje yosindikiza miyala ndi yoyenera:
1.Chivundikiro chokonza msewu
2. Pangani msewu watsopano wovala wosanjikiza
3. Magalimoto atsopano apakatikati ndi opepuka pamsewu wosanjikiza
4. Kupsyinjika kuyamwa zomatira wosanjikiza

Ubwino waukadaulo wa gravel seal:
1. Good madzi kusindikiza zotsatira
2. Otsatira ali ndi mphamvu zopindika
3. Kuchita bwino kwambiri kwa anti-skid
4. Mtengo wotsika
5. Kuthamanga kwachangu komanga

Mitundu ya zomangira zomwe zimagwiritsidwa ntchito posindikiza miyala:
1. Sulani phula
2. Emulsified asphalt/modified emulsified asphalt
3. Asphalt yosinthidwa
4. Phula la ufa wa phula