Chotsani Kuchuluka kwa Simenti mu Foam Concrete

Kodi zopangira ndi chiyani konkriti ya thovu?

Zigawo zikuluzikulu za konkire thovu ndi simenti, kuwuluka phulusa, silika fumbi, fiber, ndi zina. Zina zimakhala ndi simenti yambiri, ndipo zigawo zina zimakhala ndi masimenti ochepa, kotero mavuto enieni ayenera kufufuzidwa mwatsatanetsatane. Chifukwa konkire ya thovu nthawi zambiri imachiritsidwa pansi pa kutentha kwabwino, ndipo kuchuluka kwa thovu kumawonjezedwa, zinthu ziwirizi zimatsimikizira kuti chiŵerengero chake cha simenti chidzakhala chokwera.

Kodi ALC ndi chiyani?

ALC ndi chidule cha autoclaved opepuka konkire, womwe ndi mtundu wa konkriti wopangidwa ndi autoclaved aerated wapamwamba kwambiri (Mtengo wa ALC). ALC board imapangidwa ndi phulusa la ntchentche (kapena mchenga wa silika), simenti, layimu, ndi zina. monga waukulu zipangizo, ndipo amachiritsidwa ndi nthunzi yothamanga kwambiri kuti apange pepala la konkire la porous (okhala ndi kukonzedwa zitsulo zolimbitsa). ALC board angagwiritsidwe ntchito ngati zinthu khoma ndi padenga gulu. Ndi mtundu watsopano wazinthu zomangira zokhala ndi ntchito zapamwamba. ALC board idawonekera koyamba ku Europe, ndi Japan, Europe ndi madera ena ali ndi zambiri kuposa 40 zaka zopanga ndi mbiri yogwiritsa ntchito. Pakadali pano, ukadaulo wopanga ndi zida zopangira za opanga m'nyumba zimatumizidwa makamaka kuchokera ku Japan ndi Germany.

Konkire ya thovu ndiyosiyana kwambiri ndi ALC. Chifukwa ALC imatenga autoclave, makamaka amadalira hydration reaction ya ntchentche phulusa ndi laimu pansi kutentha kwambiri ndi kukakamizidwa kutulutsa gelation.. Simenti ndi chinthu chothandizira.

Ngakhale thovu konkire amapangidwa firiji, yogwira microaggregate sidzatulutsa msanga hydration reaction, ndipo thovu lake lolimba limadalirabe mphamvu ya simenti. Choncho, kusakaniza chiŵerengero cha thovu konkire ayenera kukhala simenti monga thupi lalikulu, ndi High simenti Ration.

M'mikhalidwe yabwino, kuchuluka kwa simenti kuyenera kuwerengera zambiri kuposa 30% za kuchuluka kwa zinthu zowuma, ndi 30% iyenera kukhala yocheperako yogwiritsidwa ntchito pochiritsa kutentha kwake. Pamene kuthira pa malo, gawo la simenti liyenera kuwerengera zambiri kuposa 60% wa zida zonse zowuma. Pakuti yachibadwa kutentha thobvu konkire ndi osalimba m'munsimu 600 kg/m3, gawo la simenti lisakhale locheperapo 70% za zinthu zonse. Pamene kachulukidwe ali pansipa 400 kg/m3, gawo lodziwika bwino liyenera kuwerengera zambiri kuposa 90% wa zinthu zonse youma.

Mfundo zotsatirazi ziyenera kuganiziridwa pakupanga chiŵerengero cha simenti:

(1) Mitundu yosiyanasiyana ya simenti. Mitundu ya simenti yokhala ndi mphamvu zoyamba komanso mochedwa kwambiri (monga simenti ya Portland yothamanga kawiri) akhoza kuchepetsa gawo la simenti moyenera, and cement types with low late strength or low early strength should increase the cement proportion;

(2) Strength grade of cement. High-strength grade cement (monga 42.5, 52.5, ndi zina.) can reduce the proportioning amount, and low-strength grade cement should increase its proportioning amount;

(3) The quality of cement. For large plants’ new dry-process rotary kiln cement, the mixing ratio can be appropriately reduced, while for small plants, shaft kiln cement or cement with a large mixing ratio should be appropriately increased;

(4) Density and strength requirements of the product. Low density or higher strength requirements should increase the cement ratio, high density or lower strength requirements can reduce the cement ratio;

(5) Initial growth temperature. The initial curing temperature after pouring (kuthira) is lower (<25°C). The proportion of cement should be increased. When the initial curing temperature is high (25℃-45℃), the proportion of cement can be appropriately reduced. If steam curing or autoclave is used, it is still strong to reduce the proportion of cement;

(6) Variety and activity of active micro-aggregate (kuphatikiza). Kugwiritsa ntchito ma micro-aggregates apamwamba kwambiri kumatha kuchepetsa kuchuluka kwa simenti (monga ultra-fine slag), pamene kugwiritsa ntchito otsika-ntchito micro-aggregates (monga yachiwiri ntchentche phulusa) akhoza kuonjezera gawo la simenti.

Cie-China.org ndiye wotsogola wotsogola wa konkriti wa thovu yemwe amapereka thovu la konkriti, superplasticizer,thovu konkire mphamvu zowonjezera kwa wopepuka konkire, Zolemba za CLC. Ngati mukuyang'ana wotulutsa thovu, chonde khalani omasuka Lumikizanani nafe.