Umhla wokuposa:31,Oct,2022
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Ikhonkrithi yekhonkrithiisetyenziswe kwikhonkrithi phantse ikhulu leminyaka njengemveliso. Kodwa ukuthandabuza kubuyela kwamaxesha amandulo, enyanisweni, abantu badala bazi ukusetyenziswa kwezinye izinto ezongezelelekileyo ekwakheni izixhobo zesakhiwo. Iirekhodi zedatha eqinisekisiweyo ukuba ngo-1885 baseYurophu sele bekwazi ukuba abalawuli abakhubazelayo, njenge-lime kunye ne-gypsum, bongezwa kwikhonkrithi. Ekupheleni kwenkulungwane ye-19, ukusetyenziswa kwe-calcium chloride wonke ingqumbo kwaye isasetyenziswa namhlanje. Ngo-1895, abadluliseli bamanzi kunye neeplasitiki zongezwa kwikhonkrithi yendlela, ephucule ngokufezekileyo kokuqina kwekhonkrithi.
Imveliso esemthethweni yoMzi-mveliso yaqala ukubonwa ngo-1910. Xa iMntla Merika yaphuhliswa eUnited States nge-1930s, umkhondo wekhonkrithi wawukhawulezile ngenxa yemozulu ebandayo. Ukwenzela ukuphucula umgangatho wekhonkrithi yendlela, "i-vinan" yayisetyenziselwa ukuphucula ukuqina kwekhonkrithi. isondo. Imveliso yokwenyani yophando lwesayensi yi "Potsalitn" i-Pobhority (Pozzalitn), ephandwe ngempumelelo kwaye yenziwa ngempumelelo ye-EWW SCPILTER ye-United States kulwelo lwenkunkuma. Ngo-1937, i-United States ikhuphe ilungelo elilodwa lomenzi wokuqala ukuze kuncitshiswe amanzi kwimbali. Ngo-1954, i-batch yokuqala yemigangatho yovavanyo yeIkhonkrithi yekhonkrithiyenziwa.
Ukusetyenziswa ngokusemthethweni kweIkhonkrithi yekhonkrithiElizwe lam lalikwiminyaka yoo-1950. Ngelo xesha, i-arhen ye-rosin ye-Arhente yokungena komoya iphuhliswe ziingcali ezivela kwiSoviet Union yaziswa. Isetyenziswe kwi-tianjin tunggu i-port port, i-Wuhan yangtze Ridge kunye ne-Filving Reyile Reyile, kwaye baphumelela iziphumo ezithile. Emva kwexesha, iiplasitiki ezikhonkrithi usebenzisa i-pulp Inkunkuma kwi-Sulfite Papermang kunye nenkunkuma kubusi kwishishini leswekile njengezixhobo eziluhlaza ezisetyenzisiweyo. Ukusetyenziswa kwemixokelelwano kwaqala ukusuka apho.
Uphuhliso kunye nokusetyenziswa kweIkhonkrithi yekhonkrithiInokubaluleka kwexesha elide. Ngokukhulisa ngamandla nokukhuthaza ukusetyenziswa kweIkhonkrithi yekhonkrithiyindlela ebalulekileyo yokukhuthaza inkqubela phambili yesayensi yecandelo lokwakha.
Kwinkqubo yokwakha yeeprojekthi zokwakha, ukusetyenziswa komthetholeko kunokuphucula ngokufanelekileyo indawo yokwakha, ukuqhuba ukusetyenziswa kwezixhobo ezahlukeneyo, ukunciphisa umthwalo wabasebenzi bokwakha ngokufanelekileyo, kwaye uqinisekise umgangatho weprojekthi. Ukongeza, inokusetyenziswa kwezinye iimeko ezinzima. Gqibezela ukuphumelela imisebenzi yokwakha kwindalo esingqongileyo.
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Umxholo wekhonkrithi unokuthi ulifinyele kakhulu ixesha lokulungisa emva kokwakhiwa kweprojekthi, ngaloo ndlela kukhawulezisa isantya seprojekthi, wenza ukuba enze i-proulting yeprojekthi, kwaye uhamba ngesantya esiphezulu sokucheba kunye nokucheba, ukwenza lonke ixesha lokwakha iprojekthi. ifutshane kakhulu. Ngaxeshanye, ukongezwa kweIkhonkrithi yekhonkrithiIngaphucula ngokufanelekileyo umgangatho weprojekthi yekhonkrithi, kwaye iphucule amandla ayo, ukuqina, ukumelana neqanda, kunye nokungafezeki.
Ukongeza, inokuphucula kakhulu i-shrinkage yekhonkrithi xa yomile ngokwaneleyo kwaye ipropathi yokuhamba ngaphambi kokuqiniseka. Ukuba umnxibelelanisi wekhonkrithi usetyenziswa ngokuchanekileyo kwiprojekthi yokwakha, umnxibelelanisi uhlala angabi naziphumo kumgangatho wekhonkrithi, kwaye unokunciphisa kakhulu ukusetyenziswa kwesamente kunye nezixhobo ezahlukeneyo eziphantsi kwesayensi, kwaye Ukuncitshiswa kokusetyenziswa kwezinto ezincedisayo zesamente akunakulugcina kuphela izixhobo zentlalo, kodwa kukwagcina iindleko zokwakha zenkqubo, kwaye inefuthe elihle kumanyathelo alandelayo. Inkqubo yokutsala kunye nengxabano ibonelela ngokulula.
IXESHA LOKUQALA: I-Oct-31 ukuya ku-4022