Mechanical Properties yeBasalt Fiber yakachekwa tambo Concrete

PRODUCT NHUNGAMIDZO

Concrete, sechinhu chinoshandiswa zvakanyanya chekuvaka muinjiniya yehurumende, ine yakanaka mekiniki zvivakwa, asi nekuramba kuchidzika kwekushandiswa kweinjiniya tekinoroji, izvo zvinokanganisa zvekutanga zvemichina zvimiro zvinoburitswa zvishoma nezvishoma. Nekuda kwekuderera kwekusimba kwesimba hunhu hwechimwe chete chegumi chesimba rekumanikidza, zvichiita kuti nhengo dzemaitiro ekutemesa dziite kutsemuka, izvo zvinoderedza zvakananga kusimba kwezvikamu, kupfupisa chiyero chekushandiswa kwe. Concrete Materials. Kuvandudza huinjiniya hwekuita hunhu hwekongiri uye kugadzirisa matambudziko mukushandiswa kwekongiri, vadzidzi vanga vachivandudza mashandiro ekongiri zvinhu kwemakore mazhinji uye vakawana nhanho-ne-nhanho mhedzisiro, senge yekuwedzera admixtures, kugadzirisa kusanganisa reshiyo, kuvandudza maitiro ekugadzira uye kugadzirisa nzira.

1. Zvishandiso zvekuedza uye nzira dzekuyedza

P. O 42.5 yakajairwa silicate simende yakasarudzwa, ine 28d compressive simba ye48.3MPa uye 28d flexural simba re8.2MPa. jecha riri pakati nepakati rine fineness modulus ye2.5-2.6 rakashandiswa sefine aggregate, riine density inooneka ye1996kg/m3. dombo rinoramba riri giredhi rakapwanyika re5-27mm rakashandiswa seyakakora aggregate, ine density inooneka ye2737kg/m3. Mwero wekudzikisa mvura we40% wakashandiswa. 40% yeSika polycarboxylic acid inoshanda zvakanyanya yekudzikisa mvura yakashandiswa. Kureba kwe basalt fiber yakachekwa tambo inenge 30mm, dhayamita ye monofilament inenge 15um, density i 2.7g/cm3, modulus ye elasticity i 95-120MPa, simba rekusimba i3300-4500MPa, uye elongation panguva yekuzorora inenge 2.5-30.

Izvo zvakakodzera zvakashandiswa mumuedzo uyu zvinoratidzwa muTable 1. Muedzo wekumanikidza unoitwa maererano neStandard for Test Methods of Mechanical Properties of Ordinary Concrete. Iyo yekumanikidza bvunzo inotora 100 × 100 × 100mm cubic specimens, 3 mienzaniso muboka rega rega, yakajairwa kurapa 28d.

2. Tnhanho

(1) tanga wapukuta chidimbu chebvunzo kuti chiongororwe mushure mekutarisa chitarisiko uye kuyera saizi, yakarurama kwandiri. Kusaenzana kweiyo specimen inotakura nzvimbo inosvika 100mm, iko kukanganisa hakusi kupfuura 0.5mm, uye iyo inotakura nzvimbo uye yakatarisana isiri-perpendicularity haifanire kunge yakakura kupfuura zvinodiwa zvedhigirii 1 degree;

(2) mufananidzo axis yemuchina wekuyedza wakabatana nepakati pepureti yekumanikidza pasi pemuchina wekuyedza. Vhura muchina wekuedza, apo iyo yepamusoro-yekumanikidza ndiro uye chidimbu chekuedza pedyo, gadzirisa rubatsiro, kuitira kuti simba rive yunifomu;

(3) iyo yekurodha maitiro kuchengetedza inoenderera uye yunifomu, bvunzo yekurodha kumhanya inotora 12kN / s-18kN / s; (4) rekodha mutoro mukuru, wakarurama kune 0.1MPa.

3. Migumisiro yekuedza uye kuongorora

Sezvinoonekwa kubva Tafura 2, iyo 7d inomanikidza simba rekongiri nekuwedzera kwe Basalt Fibers inopa hunhu hwekusachinjika kune kudzikira zvishoma nezvishoma, izvo zvinonyanya kukonzerwa nekuwedzera kwebasalt fiber, mumafibhi uye simende inoumbwa pane iyo interface kuti ibudise nzvimbo isina kusimba, uye nekuwedzera kwehuwandu hwefiber musanganiswa, rudzi urwu rwehusimba hunoramba huchiwedzera, saka cubic compressive simba rinoramba richidzikira. Iyo 28d inomanikidza simba rekongiri pamwe nekuwedzera kwebasalt fiber dosage inoratidza maitiro ekutanga kuwedzera uye nekuderera, chikonzero chekuwedzera uku kwekutanga idiki diki yedoped.basalt fibers tamba basa rekubatanidza kune imwe nhanho mukuderedza shrinkage deformation yekrete pachayo, asi panguva imwe chete kuwedzera kusina simba kwepamusoro kune 28d kuwedzera kwesimba kuti ive shoma shoma, iyo mukushanda kwese kwesimba kunowedzera.

4. Mhedzisiro

Kubva pakuona kwe cubic compressive simba, apo nzira yekudimbudzira basalt fiber admixture inosvika 1-1.5% nevhoriyamu muzana, iyo 7d uye 28 cubic compressive masimba eiyo nzira yekudimbudzira. basalt fiber kongiri inowedzerwa kune imwe nhanho kana ichienzaniswa neyeiyo kongiri isina fiber admixture.