Izakhiwo Zomshini Zezintambo Eziqoshiwe Ze-Basalt Fiber
ISINGENISO SOMKHIQIZO
Ikhonkrithi, njengezinto zokwakha ezisetshenziswa kabanzi kwezobunjiniyela bezakhiwo, inezakhiwo ezinhle zemishini, kodwa ngokujula okuqhubekayo kokusetshenziswa kobuchwepheshe bobunjiniyela, ukushiyeka kwezakhiwo zayo eziyisisekelo zemishini kuvezwa kancane kancane. Ngenxa yezimpawu zamandla aphansi okudonseka kwengxenye eyodwa kweshumi kuphela yamandla okucindezela, okuholela ekutheni amalungu enqubo yokudonsa athambekele ekuqhekekeni, okunciphisa ngqo ukuqina kwezingxenye, okunciphisa ububanzi bokusetshenziswa kwe Izinto Eziphathekayos. Ukuze kuthuthukiswe izici zokusebenza kobunjiniyela bekhonkrithi nokuxazulula izinkinga ekusetshenzisweni kwekhonkrithi, izazi bezithuthukisa ukusebenza kwekhonkrithi.izinto zikakhonkolo iminyaka eminingi futhi ithole imiphumela yesigaba ngesigaba, njengokwengeza izingxube, ukulungisa isilinganiso sokuxuba, ukuthuthukisa inqubo yokukhiqiza kanye nezindlela zokulungisa.
1. Izinto zokuhlola nezindlela zokuhlola
Kwakhethwa i-P. O 42.5 cement ejwayelekile ye-silicate, enamandla okucindezela angu-28d angu-48.3MPa kanye namandla okuguquguquka angu-28d angu-8.2MPa. Isihlabathi esiphakathi esine-fineness modulus engu-2.5-2.6 sasetshenziswa njenge-aggregate encane, enobukhulu obubonakalayo obungu-1996kg/m3. Itshe elichotshoziwe eliqhubekayo elingu-5-27mm lasetshenziswa njenge-aggregate eqinile, enobukhulu obubonakalayo obungu-2737kg/m3. Kwasetshenziswa izinga lokunciphisa amanzi elingu-40%. Kwasetshenziswa i-Sika polycarboxylic acid esebenza kahle kakhulu ekunciphiseni amanzi. Ubude be imicu eqoshiwe ye-basalt fiber cishe ingu-30mm, ububanzi be-monofilament bungu-15um, ubuningi bungu-2.7g/cm3, i-modulus yokunwebeka ingu-95-120MPa, amandla okudonsa angu-3300-4500MPa, kanti ukunwebeka ngesikhathi sokuphumula kucishe kube ngu-2.5-30%.
Ukulingana okufanele okusetshenziswe kulolu vivinyo kuboniswe kuThebula 1. Ukuhlolwa kokucindezela kusetshenziswa ngokweZinga Lokuhlola Izindlela Zezakhiwo Zemishini Zekhonkrithi Ejwayelekile. Ukuhlolwa kokucindezela kusebenzisa amasampula e-cubic angu-100×100×100mm, amasampula amathathu eqenjini ngalinye, ukwelapha okujwayelekile okungu-28d.
| Ithebula 1Inani lezinto ezisetshenziswa ekulungiseleleni amaqembu ahlukene ezibonelo | ||||||||
| Inombolo yomkhiqizo | Okuqukethwe kwefayibha | Inani lezinto ezisetshenzisiwe | ||||||
| Into | V(%) | M(kg/m3) | ukhonkolo | umlotha wamalahle | isihlabathi | itshe | amanzi | isinciphisi samanzi |
| S0 | 0 | 0 | 420 | 60 | 656 | 1069 | 210 | 2.4 |
| S1 | 0.1 | 2.65 | 420 | 60 | 656 | 1069 | 210 | 2.4 |
| S1.5 | 0.15 | 3.975 | 420 | 60 | 656 | 1069 | 210 | 2.4 |
| S2 | 0.2 | 5.3 | 420 | 60 | 656 | 1069 | 210 | 2.4 |
| S2.5 | 0.25 | 6.625 | 420 | 60 | 656 | 1069 | 210 | 2.4 |
| S3 | 0.3 | 7.95 | 420 | 60 | 656 | 1069 | 210 | 2.4 |
| S3.5 | 0.35 | 9.9275 | 420 | 60 | 656 | 1069 | 210 | 2.4 |
2. Tizinyathelo
(1) qala ngokusula ingxenye yokuhlola ezohlolwa ngemva kokuhlola ukubukeka nokulinganisa usayizi, okunembile kimi. Ukungalingani kwendawo yokuthwala isampula kufinyelela ku-100mm, iphutha alidluli ku-0.5mm, futhi indawo yokuthwala kanye nokungaguquguquki okuseduze akufanele kube kukhulu kunezidingo zezinga le-1 degree;
(2) i-axis yesampula yomshini wokuhlola ehambisana nesikhungo sepuleti lokucindezela ngaphansi komshini wokuhlola. Vula umshini wokuhlola, lapho ipuleti lokucindezela okuphezulu kanye nengxenye yokuhlola kuvala, lungisa ukwesekwa, ukuze amandla afane;
(3) inqubo yokulayisha ukuze igcine ijubane eliqhubekayo nelilinganayo, isivinini sokulayisha sokuhlola sithatha u-12kN / s-18kN / s; (4) qopha umthwalo omkhulu, onembile ku-0.1MPa.
3. Imiphumela yokuhlolwa kanye nokuhlaziywa
Njengoba kungabonakala kuThebula 2, amandla okucindezela ekhonkrithi angu-7d kanye nokwanda kwe I-Basalt Imicu iveza izici zokungashintshi kube ukwehla kancane kancane, okubangelwa kakhulu ukwengezwa kwemicu ye-basalt, kumacu kanye nesamente okwakhiwe endaweni yokuxhumana ukuze kukhiqizwe ubuso obubuthakathaka, futhi ngokwanda kwenani lokuxuba imicu, lolu hlobo lobuso obubuthakathaka luyaqhubeka nokukhula, ngakho-ke amandla okucindezela ama-cubic ayaqhubeka nokwehla ngokwemvelo. Amandla okucindezela angama-28d ekhonkrithi ngokwanda komthamo we-basalt fiber abonisa ukuthambekela kokwanda kokuqala bese kwehla, isizathu salokhu kwanda kokuqala inani elincane le-dopedimicu ye-basalt zidlala indima ekuxhumekeni ngezinga elithile ekunciphiseni ukuguquguquka kokuqina kwekhonkrithi uqobo, kuyilapho ngesikhathi esifanayo zandisa ubuso obubuthakathaka uma kuqhathaniswa nokwanda kwamandla kwe-28d kube kuncane kakhulu, okuthi ekusebenzeni konke kwamandla kukhuphuke.
| Ithebula 2 Amanani okuhlola amandla okucindezela e-cube | |||
| Inombolo yomkhiqizo | Okuqukethwe kwefayibha | Amandla okucindezela e-cubic | |
| Into | V(%) | 7d | 28d |
| S0 | 0 | 40.7 | 48.9 |
| S1 | 0.1 | 41.3 | 53.1 |
| S1.5 | 0.15 | 39 | 51.4 |
| S2 | 0.2 | 36.6 | 45.5 |
| S2.5 | 0.25 | 29.2 | 43.1 |
| S3 | 0.3 | 25.8 | 42.5 |
| S3.5 | 0.35 | 31.2 | 42.3 |
4. Umphumela
Ngokombono wamandla okucindezela ama-cubic, lapho ukuhlanganiswa kwe-shortcut basalt fiber kufinyelela cishe ku-1-1.5% ngephesenti levolumu, amandla okucindezela ama-cubic angu-7d nama-cubic angu-28 e-shortcut. i-basalt fiber ukhonkolo ukhuliswa ngezinga elithile uma kuqhathaniswa nokhonkolo ngaphandle kokuhlanganiswa kwefayibha.
