Cov neeg Loos ua pob zeb los ntawm kev sib xyaw cov txiv qaub thiab pob zeb hluav taws kub. Rau cov qauv hauv qab dej, txiv qaub thiab volcanic tshauv tau muab sib xyaw ua mortar, thiab cov mortar thiab volcanic tuff tau ntim rau hauv cov ntawv ntoo. … Cov lus piav qhia ntawm volcanic tshauv tau muaj sia nyob txij thaum ub.
Puas yog cov neeg Loos tau tsim mortar?
Lawv pom tias cov neeg Loos ua pob zeb los ntawm kev sib xyaw cov txiv qaub thiab cov pob zeb hluav taws kub ua rau ib lub mortar. Txhawm rau tsim cov qauv hauv qab dej, cov mortar thiab volcanic tuff tau ntim rau hauv cov ntawv ntoo.
Cov neeg Loos puas siv pob zeb lossis cement?
Roman pob zeb, tseem hu ua opus caementicium, yog cov khoom siv hauv kev tsim kho hauv Ancient Rome. Roman pob zeb yog ua raws li a hydraulic-setting cement. Nws yog qhov ruaj khov vim nws koom nrog cov tshauv pozzolanic, uas tiv thaiv cov kab nrib pleb los ntawm kev sib kis.
Cov neeg Loos siv hom pob zeb twg?
Hloov chaw Portland cement, Roman pob zeb siv sib tov ntawm volcanic tshauv thiab txiv qaub los khi pob zeb tawg. Tus kws tshawb fawb Roman Pliny tus Txwj Laug, tau piav qhia cov pob zeb hauv qab dej uas dhau los ua "ib pob zeb loj, tsis tuaj yeem ua rau nthwv dej thiab muaj zog dua txhua hnub." Qhov no piqued Jackson qhov kev txaus siab.
Puas Loos puas tsim cov cement?
600 BC – Rome: Txawm hais tias Cov Neeg Loos Ancient tsis yog thawj tus tsim pob zeb, lawv thawj zaug siv cov khoom siv no thoob plaws. Los ntawm 200 BC, cov neeg Loos tau ua tiav kev siv cov pob zeb hauv feem ntau ntawm lawvkev tsim kho. Lawv siv cov hmoov tshauv volcanic, txiv qaub, thiab dej hiav txwv los ua kev sib xyaw.
