1. Zitsulo Fiber Kulimbitsa Konkire
Palibe mitundu yazitsulo zachitsulo zilipo ngati zolimbitsa.Chingwe chozungulira chachitsulo chomwe chimagwiritsidwa ntchito kwambiri chimapangidwa podula waya wozungulira mpaka utali waufupi.Kutalika kwake kumakhala pakati pa 0.25 mpaka 0.75mm.Ulusi wachitsulo wokhala ndi makona anayi c/s amapangidwa pomanga mapepalawo pafupifupi 0.25mm wandiweyani.
Ulusi wopangidwa kuchokera ku waya wokokedwa ndi chitsulo chofewa.Kugwirizana ndi IS:280-1976 ndi kukula kwa waya wosiyana kuchokera 0.3 mpaka 0.5mm akhala akugwiritsidwa ntchito ku India.
Round zitsulo ulusi amapangidwa ndi kudula kapena kuwaza waya, lathyathyathya pepala ulusi wokhala ndi lililonse c/s kuyambira 0.15 mpaka 0.41mm mu makulidwe ndi 0,25 kuti 0.90mm m'lifupi amapangidwa ndi silting mapepala lathyathyathya.
Ulusi wopunduka, womwe umamangidwa momasuka ndi guluu wosungunuka m'madzi ngati mtolo umapezekanso.Popeza kuti ulusi pawokha umakonda kusonkhana palimodzi, kugawa kwawo kofanana mu matrix nthawi zambiri kumakhala kovuta.Izi zitha kupewedwa powonjezera mitolo ya ulusi, yomwe imalekanitsa panthawi yosakaniza.
2. Polypropylene Fiber Reinforced (PFR) matope a simenti ndi konkire
Ulusi wa polypropylene ndi umodzi mwamitengo yotsika mtengo kwambiri komanso yopezeka kwambiri ya polypropylene ulusi womwe umalimbana ndi mankhwala ambiri ndipo ungakhale masanjidwe a simenti omwe amayamba kuwonongeka akamawukiridwa ndi mankhwala.Malo ake osungunuka ndi okwera (pafupifupi madigiri 165 centigrade).Ndiye kuti nthawi yogwira ntchito.Monga (madigiri 100 centigrade) akhoza kusungidwa kwakanthawi kochepa popanda kuwononga katundu wa ulusi.
Ulusi wa polypropylene kukhala hydrophobic ukhoza kusakanikirana mosavuta chifukwa safuna kukhudzana kwautali panthawi yosakaniza ndipo amangofunika kusokonezeka mofanana mu kusakaniza.
Ulusi waufupi wa polypropylene m'tigawo ting'onoting'ono ta voliyumu pakati pa 0,5 mpaka 15 pogulitsa konkriti.
Fig.1: Polypropylene fiber yolimbitsa simenti-matope ndi konkire
3. GFRC - Glass Fiber Reinforced Concrete
Ulusi wagalasi umapangidwa kuchokera ku 200-400 ulusi womwe umamangidwa mopepuka kupanga choyimira.Zoyimilirazi zitha kudulidwa mu utali wosiyanasiyana, kapena kuphatikiza kupanga mateti a nsalu kapena tepi.Pogwiritsa ntchito njira zosakanikirana za konkire yachibadwa sizingatheke kusakaniza zoposa 2% (ndi voliyumu) ya ulusi wa kutalika kwa 25mm.
Chida chachikulu cha ulusi wamagalasi chinali kulimbikitsa masimenti kapena matope omwe amagwiritsidwa ntchito popanga zinthu zamapepala opyapyala.Magalasi omwe amagwiritsidwa ntchito kwambiri ndi ma e-glass omwe amagwiritsidwa ntchito.Polimbitsa mapulasitiki & galasi la AR E-galasi ilibe kukana kokwanira kwa alkalis omwe amapezeka mu simenti ya Portland komwe galasi la AR lasintha mawonekedwe a alkali.Nthawi zina ma polima amawonjezeredwa muzosakaniza kuti apititse patsogolo zinthu zina zakuthupi monga kuyenda kwa chinyezi.
Mkuyu 2: Konkire yolimbitsidwa ndi galasi-fiber
4. Zingwe za Asibesitosi
Ulusi wotsika mtengo womwe umapezeka mwachilengedwe, asibesitosi, waphatikizidwa bwino ndi phala la simenti la Portland kuti apange chinthu chomwe chimagwiritsidwa ntchito kwambiri chotchedwa simenti ya asibesitosi.Ulusi wa asbestos pano wotenthetsera makina & kukana kwamankhwala kuwapangitsa kukhala oyenera mapaipi azinthu zamapepala, matailosi ndi zida zofolera.Bolodi la simenti la asibesitosi ndi pafupifupi kuwirikiza kawiri kapena kanayi kuposa matrix osalimba.Komabe, chifukwa chaufupi (10mm) CHIKWANGWANI chimakhala ndi mphamvu zochepa.
Chithunzi 3: Ulusi wa Asibesitosi
5. Mpweya wa Mpweya
Ulusi wa kaboni kuchokera aposachedwa kwambiri & mwina ndiwowonjezera mochititsa chidwi kwambiri pamitundu yosiyanasiyana ya ulusi womwe umapezeka kuti ugwiritse ntchito malonda.Mpweya wa carbon umabwera pansi pa modulus yapamwamba kwambiri ya elasticity ndi mphamvu yosinthasintha.Izi ndizowonjezera.Makhalidwe awo amphamvu ndi owuma apezeka kuti ndi apamwamba kuposa azitsulo.Koma ali pachiwopsezo chowonongeka kuposa ngakhale ulusi wagalasi, motero nthawi zambiri amathandizidwa ndi zokutira zosiya.
Chithunzi 4: Ulusi wa Carbon
6. Zingwe Zachilengedwe
Ulusi wachilengedwe monga polypropylene kapena ulusi wachilengedwe ukhoza kukhala wopanda mphamvu kuposa chitsulo kapena ulusi wagalasi.Zimakhalanso zotsika mtengo, makamaka ngati zachilengedwe.Kuchuluka kwa ulusi wamasamba kumatha kugwiritsidwa ntchito kuti mupeze zophatikizika zambiri.Vuto la kusakaniza ndi kubalalitsidwa yunifolomu litha kuthetsedwa powonjezera superplasticizer.
Chithunzi 5: Organic fiberr
Nthawi yotumiza: Jul-23-2022