A ƙarfi daga kankare da ta sauran abũbuwan amfãni

A karo na farko a kan kankare mu fara magana a baya ƙarni m. Duk da haka, a lokacin da wannan lokaci tsawon littattafai, kazalika da sauran kayayyakin gini, shi ya wuce ta hanyar dogon hanyar hira.

A farko kankare aka gano ta archaeologists a kan bankunan na Danube a {asar Yugoslavia, a 5600 BC Duk da yake wannan gini abu da aka sanya na tsakuwa da lemun tsami gida ja.

Yau karkashin kankare za a fahimci wucin gadi dutse abu, wanda aka kafa ta solidifying a da zuga cakuda ruwa, kazalika da m da lafiya tara, wanda ake dauka a cikin account tare da wani rabo.

ƙarfi kankare

A mafi muhimmanci alama na kankare ne ta ƙarfi. A sa na kankare ƙarfi dogara a kan al'amurra da dama. The sosai guda hydration aiwatar kunshi matakai biyu:

1. Gane. Wannan mataki yana game wata rana. Da yawa ya dogara da yawan zafin jiki. Saboda haka, misali, a zazzabi na fiye da 20 digiri, domin kafa kankare bukatar sa'o'i uku. Idan zafin jiki ne sifili, to, wannan mataki zai šauki 15-20 hours.
2. Hardening. Wannan lokaci zai fara nan da nan bayan da suka gabata matakai kuma yana da shekaru da yawa.

A cikin wani hali, ya kamata a lura da cewa wani sa na kankare karfin daukan wuri kawai idan akwai danshi. A ƙarfi daga cikin kankare tsarin da kanta, da kuma kullum qara saboda da hulda da wannan abu da ruwa.

Shi ne kuma dole a yi la'akari da cewa wani sa na kankare ƙarfi ne dakatar a zafi da sanyi weather. Saboda haka, a wata high zazzabi kawai zuba kankare shawarar rigar tufafin makoki cover su hana ruwa evaporation. Korau wannan zafin jiki hali gubar zuwa daskarewa ruwa, wanda wani bangare ne na kankare mix. A hali tabbatacce zafin jiki hydration tsari ya ci gaba, duk da haka, wannan lokaci, wannan zane halaye deteriorate, ciki har da ƙarfin da kankare. Saboda wannan dalili, masana bayar da shawarar ƙara a kan aiwatar da shiri na kankare bayani na musamman abu.

kankare ƙarfi aji

Babban kankare Manuniya sun hada da:

1. A kankare aji na ƙarfi a cikin hali na axial matsawa.
2. A kankare aji na ƙarfi a cikin hali na axial mikewa.

Akwai da dama azuzuwan kankare, da babban wadanda su ne:

• Mark kankare bayani, dangane da sanyi. Wannan cakuda da aka yi amfani da shiri na gine-gine da ake gittar da alternately misãlin da kuma thawing.
• Mark kankare bayani, dangane da ruwa juriya. Wannan abun da ke ciki ne amfani a yi na samar da wutar lantarki, yin iyo wuraren waha, tashoshi da sauransu.

A amfani da kankare

Dangane da fasaha da tattalin arziki da sigogi, to gina kowane tsarin zabin na so aji da kuma sa na kankare mix ne da za'ayi akayi daban-daban. A ƙarfi daga cikin kankare a wannan harka taka muhimmiyar rawa. Masana sun bayar da shawarar for kankare struts, sanda da irin amfani kankare na aji a kalla B-15. Domin arches da kuma ginshikan ne mafi kyau don amfani da aji tare da kankare B-20-B-30. Domin slabs da bim shige Kankare Class B-15.