Kayayyakin Inji na Zaren Basalt da aka yanka Siminti

GABATARWAR KAYAYYAKI

Siminti, a matsayin kayan gini da ake amfani da shi sosai a injiniyan gine-gine, yana da kyawawan halaye na injiniya, amma tare da ci gaba da zurfafa amfani da fasahar injiniya, ƙarancin halayen injiniya na asali ana fallasa shi a hankali. Saboda ƙarancin halayen ƙarfin juriya na kashi ɗaya bisa goma kawai na ƙarfin matsewa, wanda ke haifar da membobin tsarin tensile suna da saurin fashewa, wanda ke rage juriyar abubuwan da ke ciki kai tsaye, yana rage iyakokin amfani da su Kayan Simintis. Domin inganta halayen aikin injiniya na siminti da kuma magance matsalolin da ake fuskanta wajen amfani da siminti, masana sun ci gaba da inganta aikinkayan siminti tsawon shekaru da yawa kuma sun cimma sakamako mataki-mataki, kamar ƙara kayan haɗin, daidaita rabon haɗawa, inganta tsarin samarwa da hanyoyin kulawa.

1. Kayan gwaji da hanyoyin gwaji

An zaɓi simintin siliki na P. O 42.5 na yau da kullun, tare da ƙarfin matsewa 28d na 48.3MPa da ƙarfin lanƙwasa 28d na 8.2MPa. An yi amfani da yashi matsakaici tare da madaidaicin tsari na 2.5-2.6 azaman tarawa mai laushi, tare da yawan da aka bayyana na 1996kg/m3. An yi amfani da dutsen da aka niƙa mai ci gaba na 5-27mm azaman tarawa mai kauri, tare da yawan da aka bayyana na 2737kg/m3. An yi amfani da ƙimar rage ruwa na 40%. An yi amfani da 40% na sika polycarboxylic acid mai inganci sosai wajen rage ruwa. Tsawon zaren da aka yanke na fiber basalt yana da kusan 30mm, diamita na monofilament yana da kusan 15um, yawansa shine 2.7g/cm3, tsarin sassauci shine 95-120MPa, ƙarfin juriya shine 3300-4500MPa, kuma tsawaitawa a lokacin karyewa shine kusan 2.5-30%.

An nuna daidaiton da suka dace da aka yi amfani da su a cikin wannan gwajin a cikin Jadawali na 1. An aiwatar da gwajin matsi bisa ga Ma'aunin Hanyoyin Gwaji na Halayen Inji na Siminti na yau da kullun. Gwajin matsi yana ɗaukar samfuran cubic 100×100×100mm, samfura 3 a cikin kowane rukuni, daidaitaccen matsi 28d.

2. Tmatakai ne

(1) da farko goge kayan gwajin da za a gwada bayan duba kamannin da kuma auna girman, daidai ne a gare ni. Rashin daidaiton saman ɗaukar samfurin ya kai 100mm, kuskuren bai wuce 0.5mm ba, kuma saman ɗaukar hoto da kuma rashin daidaituwar da ke kusa da shi bai kamata ya fi buƙatun digiri 1 ba;

(2) ma'aunin samfurin injin gwaji wanda ya daidaita da tsakiyar farantin matsin lamba a ƙarƙashin injin gwaji. Buɗe injin gwaji, lokacin da farantin matsin lamba na sama da ɓangaren gwajin suka rufe, daidaita tallafin, don ƙarfin ya zama iri ɗaya;

(3) tsarin lodawa don kiyaye ci gaba da daidaito, saurin lodawa na gwajin yana ɗaukar 12kN / s-18kN / s; (4) yin rikodin matsakaicin nauyin, daidai zuwa 0.1MPa.

3. Sakamakon gwaji da nazari

Kamar yadda za a iya gani daga Tebur na 2, ƙarfin matsi na 7d na siminti tare da ƙaruwar Basalt Zaruruwan suna nuna halayen raguwar da ba ta canzawa zuwa raguwa a hankali, wanda galibi saboda ƙara zaruruwan basalt, a cikin zaruruwan da simintin da aka samar a wurin haɗin don samar da wani wuri mai rauni, kuma tare da ƙaruwar yawan haɗa zaruruwan, wannan nau'in saman mai rauni yana ci gaba da ƙaruwa, don haka ƙarfin matsi mai siffar cubic yana ci gaba da raguwa. Ƙarfin matsi na siminti mai girman 28d tare da ƙaruwar yawan zaruruwan basalt yana nuna yanayin ƙaruwa da farko sannan raguwa, dalilin wannan ƙaruwar farko shine ƙaramin adadin dopedZaruruwan basalt suna taka rawa wajen haɗawa zuwa wani mataki wajen rage raguwar nakasar simintin kanta, yayin da a lokaci guda suna ƙara ƙarfin da ke ƙasa da ƙaruwar ƙarfin 28d, wanda a cikin aikin ƙarfin gabaɗaya yana ƙaruwa.

4. Sakamako

Daga mahangar ƙarfin matsewa ta cubic, lokacin da haɗin fiber na basalt na gajeriyar hanya ya kai kusan kashi 1-1.5% ta hanyar kashi na girma, ƙarfin matsewa na 7d da 28 na gajeriyar hanya zare mai siffar basalt Ana ƙara siminti zuwa wani mataki idan aka kwatanta da simintin da ba shi da haɗin zare.