Laimu wakhala akugwiritsidwa ntchito pomanga kwazaka masauzande ambiri ndipo akadali chinthu chodziwika bwino chifukwa cha mawonekedwe ake apadera. Laimu ali ndi maubwino angapo kuposa zida zina zomangira, kuphatikiza kulimba kwake, kusinthasintha kwake, komanso kuyanjana ndi chilengedwe. M’nkhaniyi tikambirana mmene tingagwiritsire ntchito laimu pomanga.

Kodi Lime ndi chiyani?

Laimu ndi chinthu chongochitika mwachilengedwe chomwe chimapangidwa ndi kutenthetsa miyala ya laimu mu ng'anjo. Kutentha kumapangitsa kuti miyala ya laimu iwonongeke kukhala calcium oxide (quicklime) ndi carbon dioxide. Quicklime ndiye amasakanizidwa ndi madzi kuti apange laimu wa hydrated, womwe ungagwiritsidwe ntchito pomanga ntchito zosiyanasiyana.

Kugwiritsa Ntchito Laimu Pakumanga

1. Mortar Lime atha kugwiritsidwa ntchito ngati chowonjezera mumatope kuti apititse patsogolo kugwira ntchito kwake, kulimba, komanso kulumikizana. Mtondo wa laimu umasinthasinthanso kuposa matope a simenti, zomwe zimapangitsa kuti zikhale zoyenera kugwiritsidwa ntchito m'nyumba zakale zomwe zimasunthika komanso kugwedezeka.
2. Plaster Lime pulasitala ndi chida chodziwika bwino chomaliza mkati ndi kunja kwa makoma. Ndiwolimba kwambiri ndipo imatha kugwiritsidwa ntchito pamalo osiyanasiyana, kuphatikiza njerwa, miyala, ndi adobe. Laimu pulasitala imathandizanso kwambiri kupuma, zomwe zingathandize kupewa kuchulukana kwa chinyezi m'makoma komanso kuchepetsa chiopsezo cha nkhungu.
3. Pansi Laimu angagwiritsidwe ntchito ngati chomangira mu zipangizo pansi, monga terrazzo ndi konkire. Zida zopangira laimu zimakhala zolimba kwambiri ndipo zimatha kumalizidwa mumitundu yosiyanasiyana komanso mitundu.
4. Insulation Lime-based insulation materials, monga hempcrete, ayamba kutchuka ngati njira zokometsera zachilengedwe m'malo mwa zida zachikhalidwe. Zipangizo zopangira laimu zimapumira kwambiri, zomwe zingathandize kupewa kuchulukana kwa chinyezi m'makoma komanso kuchepetsa chiopsezo cha nkhungu.
5. Dothi Lokhazikika Laimu atha kugwiritsidwa ntchito kukhazikika dothi, kuti likhale loyenera kumanga. Laimu amatha kusakanizidwa ndi dothi kuti awonjezere mphamvu ndikuchepetsa kupsinjika kwake. Izi zitha kukhala zothandiza makamaka m'malo omwe ali ndi dothi lopanda bwino kapena madzi ambiri.

Mitundu ya Laimu

Pali mitundu ingapo ya laimu yomwe ingagwiritsidwe ntchito pomanga, iliyonse ili ndi mphamvu zake.

1. Quicklime (Calcium Oxide) Quicklime ndiye mtundu wofunikira kwambiri wa laimu ndipo amapangidwa ndi kutenthetsa miyala ya laimu mu ng'anjo. Ndi yotakasuka kwambiri ndipo iyenera kusamaliridwa mosamala. Quicklime ingagwiritsidwe ntchito pomanga zosiyanasiyana, kuphatikizapo kukhazikika kwa nthaka ndi kupanga laimu wa hydrated.
2. Laimu wa Hydrated (Calcium Hydroxide) Laimu wothira madzi amapangidwa powonjezera madzi ku quicklime. Hydrated laimu ndi ufa woyera wabwino womwe umagwiritsidwa ntchito pomanga zosiyanasiyana, kuphatikizapo matope, pulasitala, ndi kukhazikika kwa nthaka. Laimu wa Hydrated ndi wocheperako kuposa quicklime ndipo ndi wotetezeka kugwiridwa.
3. Lime Putty Lime putty ndi chisakanizo cha laimu wa hydrated ndi madzi omwe asiyidwa kuti akhwime kwa miyezi ingapo. Lime putty angagwiritsidwe ntchito pomanga zosiyanasiyana, kuphatikizapo matope ndi pulasitala. Lime putty imagwira ntchito kwambiri ndipo imapereka zinthu zabwino kwambiri zomangira.
4. Hydraulic Lime Hydraulic laimu amapangidwa powonjezera dongo pang'ono kapena mchere wina ku hydrated laimu. Laimu wa hydraulic amayika pamaso pa madzi ndipo angagwiritsidwe ntchito pomanga zosiyanasiyana, kuphatikizapo matope, pulasitala, ndi pansi.

Chitetezo

Laimu ndi chinthu chogwira ntchito kwambiri chomwe chingayambitse kuyaka komanso kupuma ngati sichisamalidwa bwino. Pogwira ntchito ndi laimu, ndikofunikira kutsatira njira zodzitetezera:

1. Valani zovala zodzitetezera, kuphatikizapo magolovesi, manja aatali, ndi mathalauza.
2. Valani chopumira kuti musapumedwe ndi fumbi la laimu.
3. Sungani laimu kuti asakhudze khungu ndi maso.
4. Gwirani laimu mosamala ndipo pewani kutulutsa fumbi.

Mapeto

Laimu ndi chinthu chosunthika komanso chokomera zachilengedwe chomwe chakhala chikugwiritsidwa ntchito pomanga kwazaka masauzande ambiri. Kapangidwe kake kapadera kamapangitsa kuti ikhale yabwino yopangira zinthu zosiyanasiyana, kuphatikiza matope, pulasitala, pansi, kutchinjiriza, komanso kukhazikika kwa nthaka. Pali mitundu ingapo ya laimu, iliyonse ili ndi mawonekedwe akeake, ndipo ndikofunikira kusankha laimu yoyenera kuti mugwiritse ntchito pomanga.