pa nthawi yomwe konkriti imafunikira zowonjezera

Konkire ndi zida zomangira zotchuka zomwe zimagwiritsidwa ntchito kwambiri pantchito zomanga zosiyanasiyana padziko lonse lapansi. Ndi chisakanizo cha simenti, madzi, mchenga, ndi zipangizo zina zomwe zimaphikidwa kuti zikhale zolimba komanso zolimba. Komabe, pali zinthu zina zomwe konkriti imafunikira zowonjezera.

(pa nthawi yomwe konkriti imafunikira zowonjezera)

Chinthu chimodzi chofunikira chomwe chimakhudza mphamvu ndi kulimba kwa konkire ndi msinkhu wake wa hydration. Monga machiritso a konkire, amakumana ndi mankhwala omwe amachititsa kuti azikhala ndi madzi ambiri. Izi zimatha kuchepetsa nthawi yochiritsa ndikuwonjezera chiopsezo chosweka kapena kugawanika panthawi yotentha kwambiri.. Kupewa izi, opanga konkriti nthawi zambiri amawonjezera zomangira chinyezi monga silicates kapena kaolin kuti apititse patsogolo milingo yake yamadzimadzi ndikuwonjezera mphamvu ndi kulimba kwake..
Chinthu china chomwe chimakhudza katundu wa konkire ndi mtundu wake wa aggregate. Mitundu yosiyanasiyana ya ma aggregates imakhala ndi zinthu zosiyanasiyana zakuthupi komanso zamakina, kuphatikizapo kachulukidwe, compressive mphamvu, ndi porosity. Mwachitsanzo,aggregate ndi mkulu enieni yokoka adzalenga wamphamvu akaphatikiza, koma amathanso kukhala okonzeka kukhazikika pakapita nthawi. Choncho, ndikofunikira kuti makontrakitala a konkire asankhe mitundu yoyenerera yomwe ikugwirizana ndi zomwe akufuna.
Kuwonjezera pa zinthu izi, kutentha kumagwira ntchito yofunika kwambiri pozindikira kuchuluka kwamadzimadzi komanso kuphatikiza konkriti. Pa kutentha pansi pa 70 ° C (158°F), madzi a konkire amawonjezeka mofulumira, kupangitsa kuti ikhale yochepa komanso kuti ikhale yosavuta kusweka. Mbali inayi, pa kutentha kwakukulu, kuchuluka kwa hydration kumachepa, kulola ndi kuonjezera mphamvu zonse ndi kulimba kwa konkire.
Mwachitsanzo, konkire nthawi zambiri imayesedwa malinga ndi British Standard (BS) 476, zomwe zimayika malangizo a mulingo woyenera wa hydration wa konkire. Mlingo wa hydration wovomerezeka umasiyanasiyana kutengera mtundu wa aggregate, koma zambiri zimagwera pakati 25% ndi 35%. Konkire yomwe ili ndi madzi ambiri imakula kwambiri panthawi yachisanu, pamene chouma kwambiri chidzachepa kwambiri, kumabweretsa ming'alu ndi kugawanika.

(pa nthawi yomwe konkriti imafunikira zowonjezera)

Zonse, kutentha komwe konkire imafunikira zowonjezera ndi chinthu chofunikira chomwe chiyenera kuganiziridwa popanga ndi zomangamanga. Posankha mosamala zowonjezera zowonjezera ndikusankha mitundu yoyenera yophatikizira, makontrakitala akhoza kuonetsetsa kuti ali olimba, cholimba, ndi kugonjetsedwa ndi zovuta zachilengedwe monga kutentha ndi chinyezi.
ma tag otentha: konkire,zowonjezera konkriti