Pulasitala - zakuthupi chotsimikiziridwa kwa zaka

Nthawi zambiri, pansi zosiyanasiyana ntchito kumalizitsa ntchito zinthu monga pulasitala gypsum. Ngakhale anthu amene ali kutali ndi kukonza ndi mamangidwe kudziwa dzina ili. Kwa zaka zambiri, ndi nkhani yabwino ya kukhazikitsanso ndi kukonza nyumba.

finely kwambiri kuuluka gypsum pulasitala si kulenga kusiyana pakati pa latsopano ndi zaka ❖ kuyanika makoma ndi siling'i. Iye ali ndi kapangidwe kwambiri ndi zilibe osokoneza. Kugwira ntchito ndi pulasitala limayamba ndi kuwasakaniza ndi madzi. Ndi kugwirizana moyenera zinthu limathandiza ming'alu natenga mawonekedwe a tsatanetsatane ngakhale ang'ono.

Pulasitala ali ndi dongosolo porous, kuti pamalo onse ankachitira ndi nkhaniyi, komanso amatha kungolandira mphepo youlutsa mawu, potero kuonetsetsa kutchinjiriza phokoso la chipinda. Mtundu woyera wa nkhaniyi limachititsa ntchito popanda kudetsa zina n'kofunika kutero abwino woyera zokutira.

Kodi nkhaniyi nyumbayi? Natural gypsum, ndi dongosolo crystalline amaliona pa kutentha. Choncho pali imfa ya ¾ wa madzi ali momwemo n'kukhala mchere wokha hemihydrate imene wothira madzi kachiwiri amalandira masoka mwala dongosolo. Popeza palibe oposa 1% ya gypsum ndi anawonjezera kuti zinthu zina organic wa zinthu zachilengedwe, ndi zachilengedwe bwino kuti anthu ndi nyama. Nkhanizi kumanga refractories Choncho amagwira ntchito yofunika kwambiri kuteteza nyumba ku moto. Kuwonjezera katundu izi zonse, akhoza kuyamwa chinyontho owonjezera mu malo pa kuukitsidwa kwake ndi kutsitsa kupereka chinyezi pa mlingo wake.

Gypsum umabala mitundu angapo. Zipangizo zomangira Common ntchito popanga gypsum konkire ndi gypsum mankhwala, matabwa pulasitala, mapanelo ndi kugawa mbale, gypsum-laimu pulasitala njira. Mkulu gypsum nkhungu amapangidwa ndi patsogolo wapadera makina ochiritsira kumanga zinthu mwa kugonjera ku kuyeretsedwa zina ndi milled. Chifukwa zimapangitsa stucco ndi mankhwala ena kukongoletsa kwa Interiors ndi pamakoma. Pulasitala olekanitsidwa ndi nthawi yochiritsa ake: Mphindi 2-15 - kudya kolowera; Mphindi 6-30 - amati kolowera; kuposa mphindi 20 - pang'onopang'ono-kolowera.

Mphamvu ya nkhaniyi anatsimikiza ndi zizindikiro, zimene ndi zosiyana mwa mphamvu compressive (F-2, 3, 4, 5, 6, 7, 15, 10, 19, 16, 22, 25). Gypsum zopangidwa G-10, 16, 15 imatengedwa kuti kupanga. zinthu ndi zayamba ufulu zosafunika ndi mphamvu yapamwamba.

Pamene ntchito ndi nkhaniyi tiyenera kukumbukira mwamsanga amaundana, kotero musati monga kuphika wambirimbiri pulasitala sitimadzipereka. Kuchuluka kwa madzi chofunika kubala chisakanizo cha kugwirizana wabwinobwino, ndi ambiri 50-80% (ntchito yomanga) ndi 35-45% kwa chilengedwe cha mankhwala osiyanasiyana. madzi kwambiri kukhoza kukhala pores zakuthupi anaumitsa, inatuluka izo ukuphwera. Chifukwa, ndi porosity wa pulasitala adzakhala pafupifupi 50-60%. Nkofunika kukumbukira kuti zochepa madzi ntchito dilution wa gypsum, ndi lolemererapo adzakhala chomaliza mankhwala kapena ❖ kuyanika, ndi wamkulu durability ake. Kukweza kapena kutsitsa kutentha zoipa zokhudza mphamvu za nkhani solidified. Kuonjezera mphamvu ya pulasitala gypsum nthawi zina anawonjezera thereto za 5% slaked laimu.

Ntchito zachipatala otchedwa polima opangidwa gypsum, amene mosavuta ntchito kwa thupi wovulala wodwala kudzera bandeji lapansi. Izo mwangwiro amatsatira contours ndipo ali elongation mkulu. Nkhanizi ali mkulu porosity, kotero khungu anthu akupitiriza kupuma momasuka, amene kumathandiza pakutchulidwa wa itch. Nthawi zina nsalu izi umagwiritsidwa ntchito kuti wodwala achite ena kuyenda. Nkhanizi sikusokoneza chamankhwala ndi kukhazikitsa ndi X-ray bwino.