Lub Cev Khoom Ntawm Pob Zeb

Hluav taws kub
Txhua hom pob zeb sib txawv, thiab qee lub pob zeb tau raug tshuaj lom neeg decomposition nyob rau hauv qhov kev txiav txim siab kub.
(1) Gypsum: decomposes thaum kub siab tshaj 107 degree.
(2) Limestone thiab marble: decomposed thaum kub siab tshaj 910 degree.
(3) Granite: kab nrib pleb vim cua sov tsis sib xws ntawm cov minerals ntawm 600 degree
Expansion thiab contraction
Nws kuj yog kub expansion thiab txias contraction. Txawm li cas los xij, yog tias nws txias tom qab cua sov, nws qhov shrinkage tsis tuaj yeem rov qab mus rau nws qhov qub ntim, thiab nws yuav khaws ib feem ntawm nws kom dhau los ua kev nthuav dav; Cov arsenal Asmeskas tau kuaj los ntawm {{0}} degree mus rau 100 degree thiab tom qab ntawd mus rau 0 degree .
Frost tsis kam
Thaum rho tawm 20 degree , khov tshwm sim, thiab cov dej nthuav dav hauv qhov pores yog 1/10 loj dua qhov qub ntim. Yog tias lub pob zeb tsis tuaj yeem tiv taus lub zog los ntawm qhov nthuav dav no, nws yuav raug puas tsuaj. Feem ntau, yog tias qhov nqus dej tsawg dua 0.5 feem pua, nws qhov kev ua haujlwm tiv thaiv khov yuav tsis raug txiav txim siab.
Durability
Pob zeb muaj kev ruaj khov zoo, thiab cov qauv tsim nrog pob zeb muaj peev xwm mus tas li. Cov neeg Ancient tau lees paub qhov no ntev, yog li ntau lub tuam tsev tseem ceeb thiab cov qauv kev nco qab tau ua nrog pob zeb
compressive zog
Lub zog compressive ntawm cov ntaub ntawv pob zeb yuav sib txawv vim muaj cov ntxhia hauv cov ntxhia, siv lead ua loj, sib xws ntawm cov ntaub ntawv cementitious, chaw thau khoom, lub kaum sab xis ntawm kev thauj khoom thiab kev sib cais, thiab lwm yam. Yog tias lwm yam xwm txheej zoo ib yam, feem ntau cov khoom siv ntom ntom nrog cov khoom siv crystalline zoo sib txuas ua ke muaj lub zog siab. Tsis muaj qhov sib txawv ntawm lub zog compressive ntawm cov pob zeb volcanic ntom ntom tom qab ziab thiab saturated nrog dej (dej nqus dej tsawg heev). Yog hais tias lawv yog cov ntxeem tau thiab dej-resistant cemented pob zeb, lawv lub zog qhuav thiab ntub dej yuav txawv heev.
Muaj ob yam khoom siv pob zeb rau kev kho kom zoo nkauj hauv tsev: pob zeb ntuj thiab pob zeb dag, feem ntau yog pob zeb ntuj. Nws yog cov khoom siv kho kom zoo nkauj tshaj plaws, feem ntau yog siv rau hauv cov haujlwm nrog kev kho kom zoo nkauj siab.