Amapharamitha obuchwepheshe besisekelo se-granite mechanical.

 

I-Granite, idwala elisetshenziswa kakhulu, idume ngokuqina kwayo nokuqina kwayo, okwenza ibe yinto efanelekile yezisekelo zemishini kumaphrojekthi ahlukahlukene okwakha. Ukuqonda imingcele yobuchwepheshe yezisekelo zemishini ze-granite kubalulekile konjiniyela nabakhi bezakhiwo ukuqinisekisa ubuqotho besakhiwo kanye nobude besikhathi.

Enye yezindlela zobuchwepheshe eziyinhloko ze-granite amandla ayo okucindezela, ngokuvamile asukela ku-100 kuya ku-300 MPa. Lawa mandla aphezulu okucindezela avumela i-granite ukuthi imelane nemithwalo emikhulu, okwenza ifaneleke emishinini nasezintweni ezisindayo. Ngaphezu kwalokho, i-granite ibonisa ukugoba okuphansi, ngokuvamile phakathi kuka-0.1% kuya ku-0.5%, okufaka isandla ekumelaneni kwayo nokungena kwamanzi kanye nokuguquka kwamakhemikhali, okuthuthukisa kakhulu ukufaneleka kwayo ezisekelweni zemishini.

Enye ipharamitha ebalulekile yi-modulus yokunwebeka, okuthi nge-granite ingaba ngu-50 kuya ku-70 GPa. Lesi sici sibonisa ukuthi izinto zizokonakala kangakanani ngaphansi kokucindezeleka, okunikeza ukuqonda ngokusebenza kwayo ngaphansi kwemithwalo enamandla. I-coefficient yokukhulisa ukushisa ephansi ye-granite, ecishe ibe ngu-5 kuya ku-7 x 10^-6 /°C, iqinisekisa ukuthi igcina ubuqotho bayo besakhiwo ngisho nokushintshashintsha kwezinga lokushisa, okwenza kube ukukhetha okuthembekile kwezisekelo ezimweni ezahlukene zezulu.

Ubuningi be-granite, ngokuvamile obuphakathi kuka-2.63 kuya ku-2.75 g/cm³, budlala indima ebalulekile ekwakhiweni kwesisekelo. Ubuningi obuphezulu bunegalelo ekuzinzeni kwesisekelo, kunciphisa ingozi yokuhlala noma ukuguquka ngokuhamba kwesikhathi. Ngaphezu kwalokho, ukumelana kwe-granite nokuguguleka kwenza kube ukukhetha okuhle kakhulu kwezisekelo ezibhekene nomgwaqo omkhulu noma ukucindezeleka kwemishini.

Ekuphetheni, imingcele yobuchwepheshe yezisekelo ze-granite mechanical, okuhlanganisa amandla okucindezela, i-modulus of elasticity, i-porosity ephansi, kanye nobuningi obukhulu, igcizelela ukusebenza kwayo njengezinto eziyisisekelo. Ngokusebenzisa lezi zakhiwo, onjiniyela bangaklama izisekelo ze-mechanical eziqinile nezihlala isikhathi eside ezihlangabezana nezidingo zokwakha zanamuhla.