Tsiku Lotumiza:13, Meyi,2024

Pamene kutentha kukupitirira kukwera, kasupe akubwera, ndipo zotsatirazi ndi zotsatira za kusintha kwa kutentha kwa kutentha kwa konkire. Pachifukwa ichi, tipanga zosintha zofananira tikamagwiritsa ntchito zochepetsera madzi kuti Konkire ifike pakufunika.

1. Mankhwala ochepetsa madzi a polycarboxylate akadali ndi mavuto ndi kusintha kwawo kwa simenti. Kwa simenti payekha, mlingo wochepetsera madzi udzakhala wotsika ndipo kutayika kwa matope kudzakhala kwakukulu. Choncho, pamene kusinthasintha kwa simenti sikuli bwino, kusakanikirana kwa mayesero ndi kusintha kwa konkire kuyenera kuchitika. mlingo kuti tikwaniritse zotsatira zabwino.

Kuphatikiza apo, nthawi yabwino komanso nthawi yosungira simenti idzakhudzanso mphamvu ya polycarboxylate superplasticizer. Kugwiritsa ntchito simenti yotentha kuyenera kupewedwa popanga. Ngati simenti yotentha imasakanizidwa ndi wothandizira kuchepetsa madzi a polycarboxylate, kutsika koyambirira kwa konkire kumakhala kosavuta kutuluka, koma zotsatira zotetezera zowonongeka zidzachepa, ndipo konkire ingawonekere. Kutaya msanga kwa kugwa.

2. Mankhwala ochepetsa madzi a polycarboxylate amakhudzidwa kwambiri ndi kusintha kwa zipangizo. Pamene ubwino wa zipangizo monga mchenga ndi miyala ndi zosakaniza monga phulusa la ntchentche ndi ufa wa mchere umasintha kwambiri, mankhwala ochepetsera madzi a polycarboxylate adzasakanizidwa ndi mankhwala ochepetsera madzi a polycarboxylate. Kuchita kwa konkire kudzakhudzidwa pamlingo wina, ndipo mayesero osakanikirana a mayesero ayenera kuchitidwanso ndi zida zosinthidwa kuti asinthe mlingo kuti akwaniritse zotsatira zabwino.

3. Mankhwala ochepetsa madzi a polycarboxylate amakhudzidwa kwambiri ndi matope omwe ali pagulu. Kuchuluka kwamatope kumachepetsa magwiridwe antchito a polycarboxylate ochepetsa madzi. Choncho, khalidwe la aggregates ayenera kulamulidwa mosamalitsa ntchito polycarboxylate superplasticizers. Pamene matope ophatikizana akuwonjezeka, mlingo wa polycarboxylate wothandizira kuchepetsa madzi uyenera kuwonjezeka.

4. Chifukwa cha kuchuluka kwa madzi ochepetsa mphamvu ya polycarboxylate yochepetsera madzi, kutsika kwa konkire kumakhudzidwa kwambiri ndi madzi. Choncho, kumwa madzi konkire kuyenera kuyendetsedwa mosamalitsa pakugwiritsa ntchito. Pamene kuchuluka kwadutsa, konkire idzawoneka kulekanitsa, kutuluka magazi, kuumitsa ndi mpweya wambiri ndi zochitika zina zoipa.

5. Pamene ntchito polycarboxylate madzi kuchepetsa admixtures, izo m'pofunika moyenerera kuwonjezera nthawi kusanganikirana (nthawi zambiri kawiri utali admixtures chikhalidwe) pa kupanga ndondomeko konkire, kuti wosabala cholepheretsa mphamvu ya polycarboxylate kuchepetsa madzi admixture akhoza kukhala. zosavuta kuchita, zomwe ndi yabwino Control wa konkire kugwa pakupanga. Ngati nthawi yosakaniza sikokwanira, ndizotheka kuti kugwa kwa konkire kumaperekedwa kumalo omanga kudzakhala kwakukulu kuposa kugwa kwa konkire komwe kumayendetsedwa pamalo osakaniza.

6. Pofika masika, kusiyana kwa kutentha pakati pa usana ndi usiku kumasintha kwambiri. Mu ulamuliro kupanga, tiyenera nthawi zonse kulabadira kusintha konkire slump ndi kusintha mlingo wa admixtures mu nthawi yake (kukwaniritsa mfundo otsika kusanganikirana pa kutentha otsika ndi mkulu kusanganikirana pa kutentha).