Kayayyakin Injini na Basalt Fiber yankakken madauri Kankare

GABATARWA KYAUTATA

Kankare, a matsayin kayan gini da aka yi amfani da shi sosai a aikin injiniyan farar hula, yana da kyawawan kaddarorin injina, amma tare da ci gaba da zurfafa aikace-aikacen fasahar injiniya, ana fallasa gazawar ainihin kaddarorin na injina a hankali. Saboda ƙananan halayen ƙarfin ƙarfi na kawai kashi ɗaya bisa goma na ƙarfin matsawa, wanda ya haifar da mambobi na tsarin aiki suna da wuyar fatattaka, wanda kai tsaye ya rage ƙarfin abubuwan da aka gyara, yana rage girman aikace-aikacen. Kayan Kankares. Don haɓaka halayen aikin injiniya na kankare da magance matsalolin aikace-aikacen siminti, masana sun inganta aikinkankare kayan shekaru masu yawa kuma sun sami sakamako na mataki-mataki-mataki, irin su ƙari na admixtures, daidaita ma'auni na haɗuwa, inganta tsarin samarwa da hanyoyin kulawa.

1. Gwajin kayan gwaji da hanyoyin gwaji

P. O 42.5 talakawa silicate ciminti aka zaba, tare da 28d matsawa ƙarfi na 48.3MPa da 28d flexural ƙarfi na 8.2MPa. An yi amfani da yashi matsakaita tare da modules mai kyau na 2.5-2.6 azaman tara mai kyau, tare da bayyananniyar 1996kg/m3. An yi amfani da dutsen daka mai ci gaba da ɗorawa na 5-27mm azaman ƙaƙƙarfan jimi, tare da bayyanannun yawa na 2737kg/m3. An yi amfani da adadin raguwar ruwa na kashi 40%. An yi amfani da kashi 40% na Sika polycarboxylic acid mai matukar tasiri mai rage ruwa. Tsawon basalt fiber yankakken strands shi ne game da 30mm, da diamita na monofilament ne game da 15um, da yawa ne 2.7g/cm3, da modulus na elasticity ne 95-120MPa, da tensile ƙarfi ne 3300-4500MPa, da elongation a hutu ne game da 2.5-30%.

Abubuwan da suka dace da aka yi amfani da su a cikin wannan gwajin ana nuna su a cikin Tebur 1. Ana aiwatar da gwajin matsawa bisa ga Ma'auni don Hanyoyin Gwaji na Kayan Kayan Kayan Kayan Kayan Kayan Kayan Kayan Kayan Kayan Kayan Kayan Kayan Kayan Gida. Gwajin matsawa yana ɗaukar samfuran cubic 100 × 100 × 100mm, samfuran 3 a cikin kowane rukuni, daidaitaccen curing 28d.

2. Tmatakai ne

(1) da farko goge gunkin gwajin da za a gwada bayan duba kamanni da auna girman, daidai a gare ni. Rashin daidaituwa na samfurin ɗaukar hoto ya kai 100mm, kuskuren bai wuce 0.5mm ba, kuma ƙasa mai ɗaukar hoto da madaidaicin madaidaicin bai kamata ya zama mafi girma da buƙatun digiri na 1 ba;

(2) ma'aunin samfurin na'urar gwajin da aka yi daidai da tsakiyar farantin karfe a ƙarƙashin injin gwajin. Bude injin gwajin, lokacin da farantin matsi na sama da yanki na gwaji ya rufe, daidaita goyan bayan, don haka ƙarfin ya zama daidai;

(3) da loading tsari don kula da ci gaba da kuma uniform, gwajin loading gudun daukan 12kN / s-18kN / s; (4) rikodin matsakaicin nauyi, daidai zuwa 0.1MPa.

3. Sakamakon gwaji da bincike

Kamar yadda za a iya gani daga Table 2, da 7d compressive ƙarfi na kankare tare da karuwa na Basalt zaruruwa suna gabatar da halayen da ba su canzawa zuwa raguwar hankali, wanda galibi saboda ƙari na basalt fibers, a cikin zaruruwa da siminti da aka kafa a mahaɗa don samar da ƙasa mai rauni, kuma tare da haɓaka adadin hadawar fiber, irin wannan ƙasa mai rauni yana ci gaba da ƙaruwa, don haka ƙarfin cubic matsawa a zahiri yana ci gaba da raguwa. Ƙarfin ƙarfi na 28d na kankare tare da karuwa a cikin adadin basalt fiber sashi yana nuna yanayin karuwa na farko sannan kuma raguwa, dalilin wannan karuwa na farko shine ƙananan adadin doped.basalt fibers taka rawa wajen haɗawa zuwa wani matsayi na rage raguwar nakasar simintin da kanta, yayin da a lokaci guda ƙara girman ƙasa mai rauni dangane da ƙarfin ƙarfin 28d ya zama ƙasa da yawa, wanda a cikin gabaɗayan aikin ƙarfin yana ƙaruwa.

4. Sakamako

Daga mahangar ƙarfin cubic cubic, lokacin da gajeriyar hanyar basalt fiber admixture ya kai kusan 1-1.5% ta adadin girma, 7d da 28 cubic ƙarfi na gajeriyar hanyar. basalt fiber siminti suna ƙaruwa zuwa wani matsayi idan aka kwatanta da na simintin ba tare da haɗin fiber ba.