Qhob thiab screed tuaj yeem pom ntawm yuav luag txhua qhov chaw tsim kho. Txawm hais tias tsuas yog hauv pem teb slab lossis tag nrho lub tsev: qhov ntau ntawm kev siv rau cov khoom siv hauv tsev yog ntau yam. Nyeem ntawm no ntau npaum li cas cov khoom ntim ib txwm tsim thiab ntau npaum li cas yuav tsum tau.
Screed thiab qhob feem ntau muaj nyob rau hauv 25 kg thiab 40 kg hnab. Cov kab lus hauv qab no piav qhia seb lub thawv loj twg tsim cov pob zeb uas npaj txhij siv los yog screed siv cov piv txwv yooj yim xam.
Screed thiab pob zeb - qhov sib txawv thiab thaj chaw ntawm daim ntawv thov
Lub forerunner ntawm niaj hnub pob zeb yog siv nyob ib ncig ntawm 10,000 xyoo dhau los. Txog niaj hnub no, tam sim no tau tsim kho kom zoo thiab paub tab, nws yog ib qho khoom siv tseem ceeb rau kev tsim kho.
Txawm hais tias cov no yog cov khoom siv dav siv, feem ntau tsis meej pem txog qhov txawv ntawm pob zeb thiab screed tiag tiag. Ntau tus neeg siv kuj tsis paub txog lub hom phiaj twg ntawm cov khoom siv hauv tsev zoo sib xws yog qhov kev xaiv zoo.
Concrete
Qhov no muaj av nplaum nrog txiv qaub (=cement), gravel lossis xuab zeb, khi cov neeg ua haujlwm thiab cov catalysts. Rau hom pob zeb tshwj xeeb, cov khoom xyaw ntxiv tuaj yeem raug ntxiv. Tom qab ntxiv cov dej sib tov, cov txheej txheem tshuaj lom neeg tuaj yeem ua rau cov khoom sib xyaw no ua rau cov khoom sib xyaw crystalline. Cov chaw muaj peev xwm ntawm daim ntawv thov suav nrog cov hauv paus, cov khoom muaj zog ntawm ntau hom thiab ntau ntxiv.
Screed
Qhov saum npoo ntawm lub hauv paus pob zeb yog qhov ntxhib dhau thiab tsis sib npaug rau nteg hauv pem teb. Ib txheej ntawm screed yog siv ntawm no los ncaj nws. Cov muaj pes tsawg leeg ntawm screed yog fundamentally zoo li cov pob zeb. Txawm li cas los xij, cov khoom ntawm screed tuaj yeem sib txawv nyob ntawm qhov xav tau siv. Qhov sib txawv tseem ceeb ntawm screed thiab pob zeb yog tias tsis yog txhua hom screed yuav tsum tau dej los teb.
Concrete screed
Ib hom screed uas muaj qhov zoo sib xws rau pob zeb yog hu ua pob zeb screed. Cov screed no yog cov txheej txheem ncaj ncaj uas yog siv rau cov hauv paus thiab, zoo li pob zeb, yuav tsum tau dej kom tawv. Txij li cov xuab zeb hauv cov pob zeb ua pob zeb yog qhov zoo dua-grained dua li hauv pob zeb, koj tau txais ib qho smoother saum npoo uas hauv pem teb tuaj yeem tsim tau.
Xav kom muaj nuj nqis
Yog hais tias qhov ntim ntawm cov pob zeb ua vaj huam sib luag tau paub, nws yog qhov yooj yim heev los txiav txim siab seb yuav tsum muaj pes tsawg lub hnab ntawm qhov xav tau pob zeb qhuav. Tau kawg, nws tseem tuaj yeem tsim cov formwork ua ntej, tom qab ntawd ntsuas nws thiab suav cov ntim ntawm lub hauv paus no.
Yuav ua li cas xam yuav tsum tau ua nyob rau hauv ib tug neeg mob tau piav qhia hauv qab no siv tus piv txwv ntawm lub hauv paus me me.
Xaiv qhov ntim ntawm cov khoom
Volume of a cuboid:
Length [in m] x width [in m] x height [in m]=ntim [m³]
Example: 2.2 m x 3.5 m x 0.2 m=1.54 m³ volume to be filling.
Hloov cubic meters rau liters: 1 m³ sib npaug rau 1000 L=>1.54 m³ x 1000 L / m³=1540 L
1540 L ntawm pob zeb yuav tsum.
Tip:
Yog tias koj xav txiav txim tawm qhov yuam kev vim qhov tsis raug nkag hauv lub tshuab xam zauv nrog ntau cov geometries, koj tuaj yeem nrhiav tau yooj yim-rau-siv online ntim tshuab xam zauv siv lub tshuab tshawb nrhiav. Cov chav sib txawv kuj tuaj yeem hloov pauv sai thiab yooj yim.
Dry mix rau ntim tau nchuav
Rule of thumb:
1 kg ntawm cov qhob qhuav qhuav ua rau kwv yees li 0.525 L ntawm cov pob zeb sib xyaw.
1540 L / 0.525 L / kg=2933.333 kg qhuav mix.
Nws siv 2933, 333 kg ntawm qhuav mix kom tau 1540 L ntawm cov pob zeb sib xyaw.
Yuav tsum muaj pes tsawg lub hnab pob zeb
| 25 kg bag | 40 kg bag |
| 2933, 333 kg: 25 kg/bag | 2933, 333 kg: 40 kg/bag |
| =117,333bags | =73,333bags |
Rau lub hauv paus nrog ntim ntawm 1.54 m³ koj xav tau 118 hnab ntawm 25 kg lossis 74 hnab ntawm 40 kg ntawm pob zeb, sib npaug.
Note:
Txoj cai ntawm tus ntiv tes xoo saum toj no yog tus nqi nruab nrab. Txij li cov pob zeb sib txawv thiab cov screed sib txawv muaj qhov sib txawv ntawm "qhuav" rau "sib xyaw", koj yuav tsum ua raws li cov lus qhia ntim thiab, yog tias koj tsis paub meej, nug tus neeg muag khoom cov neeg ua haujlwm tshwj xeeb rau kev tawm tswv yim.
Raws li qhov yuav tsum tau muaj thiab tus nqi tsim kho tam sim no rau cov khoom siv hauv tsev, nws yuav raug nqi ntau dua los sib xyaw cov pob zeb ntawm koj tus kheej los ntawm cov cement, gravel lossis xuab zeb thiab dej es tsis txhob siv cov pob zeb ua tiav. Rau qhov ntau heev, nws yuav tsim nyog kom npaj txhij-rau-pob qhob xa tuaj. Cov kev sib piv yuav tsum tau txais ntawm no hauv ib tus neeg mob.
