Sulphoaluminate simenti

Simenti ya Sulphoaluminate (SAC) ndi mtundu wa simenti womwe ukudziwika bwino chifukwa cha mawonekedwe ake apadera komanso ubwino wake kuposa mitundu ina ya simenti. SAC ndi simenti ya hydraulic yomwe imapangidwa pophatikiza clinker ya sulphoaluminate, gypsum, ndi calcium sulfate pang'ono. M'nkhaniyi, tiwona chiyambi, makhalidwe, ubwino, ndi ntchito za simenti ya sulphoaluminate.

Origins Sulphoaluminate simenti idapangidwa koyamba ku China m'ma 1970. Poyamba idagwiritsidwa ntchito pazinthu zapadera, monga konkriti yokhazikika komanso kukonza matope. M'zaka zaposachedwa, SAC yapeza kutchuka ngati njira yokhazikika ya simenti yachikhalidwe ya Portland.

Makhalidwe Simenti ya sulphoaluminate ili ndi zinthu zingapo zapadera zomwe zimapangitsa kuti ikhale yosiyana ndi mitundu ina ya simenti. Makhalidwewa ndi awa:

1. Kukhazikitsa mwachangu: SAC imayika mwachangu, ndi nthawi yokhazikika ya mphindi 15-20. Izi zimapangitsa kuti zikhale zabwino kwa mapulogalamu omwe kufulumira kumafunika, monga nyengo yozizira kapena pakufunika kukonza mwachangu.
2. Mphamvu zoyamba kwambiri: SAC ili ndi mphamvu yoyambirira kwambiri, yokhala ndi mphamvu yopondereza pafupifupi 30-40 MPa pambuyo pa tsiku limodzi lochiritsa. Izi zimapangitsa kukhala yabwino kwa ntchito kumene mphamvu oyambirira amafunikira, monga precast konkire kapena kukonza.
3. Kutsika kwa mpweya wa carbon: SAC ili ndi malo otsika a carbon kuposa simenti yachikhalidwe ya Portland, chifukwa imafuna kutentha kochepa panthawi yopanga ndipo imakhala ndi clinker yochepa.
4. High sulfate resistance: SAC ili ndi kukana kwakukulu kwa sulphate, zomwe zimapangitsa kuti zikhale zoyenera kugwiritsidwa ntchito m'madera omwe ali ndi sulphate yambiri, monga madera a m'mphepete mwa nyanja.

Ubwino Sulphoaluminate simenti imapereka maubwino angapo kuposa mitundu ina ya simenti, kuphatikiza:

1. Kutsika kwa mpweya wa carbon: SAC ili ndi malo otsika a carbon kuposa simenti ya Portland, zomwe zimapangitsa kuti ikhale njira yokhazikika yomanga.
2. Kukhazikitsa mwachangu: SAC imakhazikitsa mwachangu, zomwe zingapulumutse nthawi ndikuchepetsa ndalama zomanga.
3. Kulimba koyambirira kwambiri: SAC ili ndi mphamvu zoyambilira, zomwe zimatha kuchepetsa nthawi yofunikira kuchiritsa ndikuwonjezera zokolola.
4. High sulphate kukana: SAC imakhala ndi kukana kwakukulu kwa sulphate kuukira, komwe kungapangitse kulimba kwa nyumba za konkire m'malo ovuta.

Simenti ya Sulphoaluminate imagwiritsidwa ntchito m'njira zosiyanasiyana, kuphatikiza:

1. Konkire yoyika mwachangu: SAC imagwiritsidwa ntchito nthawi zambiri pamapulogalamu omwe amafunikira kukhazikika mwachangu, monga nyengo yozizira kapena kukonza mwachangu.
2. Precast konkire: SAC imagwiritsidwa ntchito nthawi zambiri popanga zinthu zopangira konkriti, monga mapaipi a konkire, ma slabs, ndi mapanelo.
3. Kukonza matope: SAC nthawi zambiri imagwiritsidwa ntchito ngati matope okonzera konkriti, chifukwa imakhazikika mwachangu komanso imakhala ndi mphamvu zoyambira kwambiri.
4. Konkire yodziyimira payokha: SAC itha kugwiritsidwa ntchito kupanga konkriti yodziyimira yokha, yomwe ndi yabwino kwa mapulogalamu pomwe pakufunika malo osalala, osalala.

Pomaliza Sulphoaluminate simenti ndi mtundu wapadera wa simenti womwe umapereka maubwino angapo kuposa simenti yachikhalidwe ku Portland. Ili ndi mawonekedwe otsika a carbon, imayika mofulumira, imakhala ndi mphamvu zoyamba kwambiri, ndipo imagonjetsedwa kwambiri ndi sulfate. SAC imagwiritsidwa ntchito pazinthu zosiyanasiyana, kuphatikiza konkriti yokhazikika mwachangu, konkriti yokhazikika, matope okonza, ndi konkriti yodziyimira yokha. Popeza kukhazikika kumakhala kofunika kwambiri pakumanga, kugwiritsa ntchito SAC kuyenera kuwonjezeka kutchuka.