Idethi Yokuthumela: 18, Sep, 2023

I-aggregate ithatha umthamo omkhulu wokhonkolo, kodwa isikhathi eside, kunokungaqondi okuningi mayelana nezinga lokwahlulela ikhwalithi ye-aggregate, futhi ukungaqondi kahle okukhulu imfuneko yamandla okucindezela isilinda. Lokhu kungaqondi kahle kuvela endimeni yayo kukhonkolo, okungukuthi, isihlabathi namatshe, njengohlaka lwamathambo omuntu, kuyipharamitha ebalulekile yokunquma amandla kakhonkolo. Ngakho-ke, izincwadi eziningi zokufunda kanye nezindinganiso eziningi zamanje kanye nezinkambiso zisadinga amandla ama-aggregates abe yi-1.5 kuya ku-1.7 izikhathi, noma izikhathi ezingu-2 zamandla kakhonkolo olungiselelwe. Umbhali ukholelwa ukuthi lapho ibanga lokuqala lokuklama ukhonkolo lisephansi kakhulu, le mfuneko ibekwa phambili, okungukuthi, amandla okucindezela isilinda we-aggregate ngu-≥40MPa, okusobala nje ukususa lawo matshe ngesimo sezulu esibi njengesamba; Kodwa-ke, amandla okuklama okukhonkolo athuthukisiwe kakhulu, futhi kusalandela ubudlelwano phakathi kwalaba ababili ngaphambili, okusobala ukuthi behlukanisile kakhulu neqiniso. Eqinisweni, ukhonkolo we-lightweight aggregate ekhaya naphesheya usulungisiwe futhi wasetshenziswa kubunjiniyela, futhi amandla okucindezela isilinda we-lightweight aggregate esetshenziswayo kuphela i-15MPa noma ngaphansi, kuyilapho amandla kakhonkolo angafinyelela ku-80 kuya ku-100MPa.

Omunye umbono oyiphutha obalulekile ubukhulu bezinhlayiyana ezisebenza kukhonkolo opompowe noma ukhonkolo ozihlanganisayo (SCC). Njengoba kufanele kube nokunyakaza okuhlobene phakathi kwamatshe enqubweni yaleyo ngxube ehamba epayipini lepompo futhi ageleza kusifanekiso, kuya kuba mkhulu ungqimba lwefilimu yokugcoba udaka oludingekayo ekuhambeni okuhlobene phakathi kwezinhlayiya zamatshe ezinosayizi wezinhlayiyana ezinkulu, umthamo we-pulp ungadingeka. Lesi futhi isizathu sokuthi kungani i-19mm(British 3/4inch) ingusayizi omkhulu wezinhlayiyana zamatshe asetshenziswa ekulungiseleleni izingxube ezinjalo phesheya. Nakuba ubukhulu bezinhlayiyana zamatshe asetshenzisiwe buncane, isilinganiso esingenalutho esidinga ukugcwaliswa ekuxubeni sikhulu, esikhona ibhalansi phakathi kwezimo ezingenhla, futhi inani lodaka oludingekayo ekuxubeni lincane.