Mechanical Properties wa Basalt CHIKWANGWANI akanadulidwa zingwe Konkire

MAU OYAMBIRA KWA PRODUCT

Konkire, monga zomangira zomwe zimagwiritsidwa ntchito kwambiri mu zomangamanga, zimakhala ndi zida zabwino zamakina, koma ndikukula kosalekeza kwa kugwiritsa ntchito ukadaulo waukadaulo, zofooka zamakina ake zimawonekera pang'onopang'ono. Chifukwa cha otsika amakokedwe mphamvu makhalidwe a gawo limodzi mwa magawo khumi a mphamvu compressive, chifukwa mamembala a ndondomeko kumakoka sachedwa akulimbana, amene amachepetsa mwachindunji kulimba kwa zigawo zikuluzikulu, kuchepetsa kukula kwa ntchito. Zofunika Konkires. Kuti apititse patsogolo mawonekedwe a uinjiniya wa konkriti ndikuthana ndi mavuto pakugwiritsa ntchito konkriti, akatswiri akhala akuwongolera magwiridwe antchito a konkritizipangizo za konkire kwa zaka zambiri ndipo akwaniritsa zotsatira siteji-ndi-siteji, monga kuwonjezera admixtures, kusintha chiŵerengero kusanganikirana, kukonza njira kupanga ndi kukonza njira.

1. Zida zoyesera ndi njira zoyesera

P. O 42.5 simenti wamba silicate anasankhidwa, ndi 28d compressive mphamvu ya 48.3MPa ndi 28d flexural mphamvu ya 8.2MPa. Mchenga wapakatikati wokhala ndi fineness modulus wa 2.5-2.6 unagwiritsidwa ntchito ngati aggregate yabwino, yowoneka bwino ya 1996kg/m3. Mwala wophwanyidwa wosalekeza wa 5-27mm unagwiritsidwa ntchito ngati coarse aggregate, ndi kachulukidwe kowoneka bwino ka 2737kg/m3. Kuchepetsa madzi 40% kunagwiritsidwa ntchito. 40% ya Sika polycarboxylic acid yochepetsera madzi idagwiritsidwa ntchito. Kutalika kwa ulusi wa basalt wodulidwa pafupifupi 30mm, m'mimba mwake wa monofilament ndi za 15um, kachulukidwe ndi 2.7g/cm3, modulus ya elasticity ndi 95-120MPa, kumakokedwe mphamvu ndi 3300-4500MPa, ndi elongation yopuma ndi za 2.5-30.

Zokwanira zomwe zimagwiritsidwa ntchito pamayesowa zikuwonetsedwa mu Table 1. Mayeso opondereza amayendetsedwa molingana ndi Standard for Test Methods of Mechanical Properties of Ordinary Concrete. The compressive mayeso utenga 100 × 100 × 100mm kiyubiki toyesa, 3 toyesa gulu lililonse, muyezo kuchiritsa 28d.

2. Tndi masitepe

(1) choyamba pukutani chidutswa choyesera kuti chiyesedwe mutayang'ana maonekedwe ndi kuyeza kukula kwake, molondola kwa ine. The mkangano wa chitsanzo kubala pamwamba kufika 100mm, cholakwa si oposa 0.5mm, ndi kubala pamwamba ndi moyandikana sanali perpendicularity sayenera kukhala wamkulu kuposa zofunika digiri 1 digiri;

(2) chitsanzo cha makina oyesera omwe amagwirizana ndi pakati pa mbale yokakamiza pansi pa makina oyesera. Tsegulani makina oyesera, pamene mbale yoponderezedwa yapamwamba ndi chidutswa choyesera pafupi, sinthani chithandizo, kuti mphamvu ikhale yofanana;

(3) ndondomeko Mumakonda kukhala mosalekeza ndi yunifolomu, mayeso Mumakonda liwiro amatenga 12kN / s-18kN / s; (4) lembani katundu wambiri, wolondola mpaka 0.1MPa.

3. Zotsatira zoyesa ndi kusanthula

Monga tikuonera pa Table 2, 7d compressive mphamvu konkire ndi kuwonjezeka kwa Basalt ulusi umapereka mawonekedwe osasinthika ndikuchepa pang'onopang'ono, zomwe zimachitika makamaka chifukwa chowonjezera ulusi wa basalt, mu ulusi ndi simenti yomwe imapangidwa pamalopo kuti ipangitse malo ofooka, ndipo pakuwonjezeka kwa kuchuluka kwa kusakanikirana kwa ulusi, mtundu woterewu wofooka ukupitilira kukula, kotero kuti mphamvu ya cubic compressive ikupitilizabe kuchepa. Mphamvu yopondereza ya konkire ya 28d ndi kuwonjezeka kwa mlingo wa basalt fiber ikuwonetsa chizolowezi cha kuwonjezeka koyamba kenako ndikuchepa, chifukwa chakuwonjezeka koyambaku ndikuchepa kwa doped.ulusi wa basalt kuthandizira kulumikiza kumlingo wina kuchepetsa kusinthika kwa konkire komweko, pomwe nthawi yomweyo kuonjezera ofooka pamwamba pa 28d mphamvu yowonjezera kukhala yocheperapo, yomwe muzochitika zonse zowonjezera mphamvu.

4. Zotsatira

Kuchokera pamalingaliro a mphamvu ya cubic compressive, pamene njira yachidule ya basalt fiber admixture ikufika pafupifupi 1-1.5% ndi kuchuluka kwa voliyumu, 7d ndi 28 cubic compressive mphamvu zachidule. basalt fiber konkire amachulukitsidwa pang'onopang'ono poyerekeza ndi konkriti popanda kusakaniza kwa ulusi.