Akụkọ

Okwu mmalite nke ihe siri ike

Ọnọdụ mmepe nke ihe owuwu siri ike

Ka ọ dị ugbu a, ihe a na -agbakwunyere bụ ihe a na -ejikarị ewu ewu na China, na -aza ọnụ ọgụgụ ka ukwuu. N'otu oge ahụ, ọ bụkwa mpaghara nwere ihe nrụpụta ihe siri ike n'ụwa. Mmepụta nke ciment akụrụngwa ya ruru ijeri tọn 1.882 na 2010, nke pụtara ihe dịka pasenti iri asaa n'ime ngụkọta mmepụta ụwa.

Arụ ọrụ ụkpụrụ nke mesikwuru ihe

Ihe kpatara ihe eji eme ka ihe sie ike nwere ike ịrụkọ ọrụ bụ site na ihe onwunwe ya. Nke mbu, ogwe nchara na ihe nwere ihe dị ka otu ọnụọgụ mgbasawanye ọkụ, na nkewa n'etiti ogwe nchara na simenti dị obere n'otu ọnọdụ okpomọkụ. Nke abuo, mgbe ihe siri ike na -esi ike, enwere ezigbo njikọ n'etiti simenti na elu ihe nkwado, ka enwere ike ibunye nrụgide ọ bụla n'etiti ha nke ọma; Na mkpokọta, a na -ejikwa elu ihe nkwado ahụ mee ka ọgịrịga corrugated (nke a na -akpọ rebar) iji meziwanye njikọ dị n'etiti ihe na nkwado; Mgbe nke a ka ezughi oke iji nyefee esemokwu n'etiti nkwado na simenti, njedebe nkwado a na -ehulata ogo 180. Nke atọ, ihe ndị alkaline dị na ciment, dị ka calcium hydroxide, potassium hydroxide na sodium hydroxide, na -enye gburugburu alkaline, nke na -emepụta ihe nkiri na -echebe ihe n'elu ihe nkwado, yabụ na ọ na -esiri ike ịka njọ karịa nkwado na gburugburu na -anọpụ iche na acid. N'ikwu okwu n'ozuzu, gburugburu ebe obibi nwere uru pH dị elu karịa 11 nwere ike ichebe nkwado site na nchara; Mgbe ekpughere ya na ikuku, uru pH nke ihe siri ike na -ebelata nwayọ n'ihi acidification nke carbon dioxide. Mgbe ọ dị ala karịa 10, ihe nkwado ahụ ga -emebi. Ya mere, ọ dị mkpa iji hụ na ọkpụrụkpụ nke ihe mkpuchi ahụ n'oge arụ ọrụ.

Nkọwapụta na ụdị nkwalite ahọpụtara

Ọdịnaya nke nkwusiri ike na ihe siri ike na -adịkarị obere, sitere na 1% (ọkachasị na osisi na mbadamba) ruo 6% (ọkachasị na ogidi). Ngalaba nke nkwado bụ okirikiri. Dayameta nke nkwado na United States na -abawanye site na 0.25 ruo 1 inch, na -abawanye site na 1 /8 inch na ọkwa ọ bụla; Na Europe, site na 8 ruo 30 mm, na -abawanye site na 2 mm na ọkwa ọ bụla; A na -ekewa ala China na akụkụ 19 site na 3 ruo 40 milimita. Na United States, dịka ọdịnaya carbon dị na nkwalite, e kewara ya na 40 nchara na 60 nchara. Nke ikpeazụ nwere ọdịnaya carbon dị elu, ike dị elu na isi ike, mana ọ siri ike ihulata. Na gburugburu ebe obibi na -emebi emebi, a na -ejikwa ogwe nchara nke electroplating, resin epoxy na igwe anaghị agba nchara.


Oge ezipụ: Aug-10-2021