Polycarboxylic acidochepetsera madzi amatha kukumana ndi zovuta zambiri pazogwiritsa ntchito. Tsopano tiyeni titchule mavuto omwe amakumana nawo muzogwiritsa ntchito mainjiniya ndi mayankho awo.
Choyamba ndi matope omwe ali mumchenga. Pamene matope zili mu mchenga ndi mkulu, msonkho kuchepetsa mlingo wapolycarboxylic acid kuchepetsa madziimachepetsedwa kwambiri, ndipo kusintha sikukuwonekera pamene zomwe zili zikuwonjezeka. Yankho: Gwiritsani ntchito mchenga uwu pa konkire wamba wamba; kuwongolera mosamalitsa matope omwe ali mumchenga ndipo amafuna kuti matope azikhala osachepera 2%.
Chachiwiri ndi vuto losasungunuka la mchenga ndipolycarboxylic acid madzi kuchepetsa wothandizira. Pamene gradation, matope, ndi matope mumchenga akwaniritsa zofunikira, sasungunuka ndi polycarboxylic acid kuchepetsa madzi. Kapangidwe ka mankhwala kumatsutsana ndi kapangidwe kakepolycarboxylic acid kuchepetsa madzi, ndipo konkire yosakanikirana ilibe fluidity. Yankho: Pa mchenga uliwonse womwe umalowa pamalopo, ngati zizindikiro za thupi zili zoyenerera, yesaninso kusakaniza konkire kuti muchotse mchenga wosasungunuka pamalopo.
Ndiye kuwonongeka kwa konkire kumathamanga, zomwe zimafunawopanga madzi ochepetsera madzikuwonjezera slump posungira wothandizira, ndiyeno ntchito pa-malo zopangira kuchita retest ya mix chiŵerengero kusintha kugwa kutayika kukwaniritsa zofunika zomangamanga.
Chomaliza ndi chodabwitsa cha magazi a konkriti. Pansi pa mvula, konkire ya C50 inatsanulidwa ndipo konkire inatsitsidwa kuchokera ku tanka bwino, koma pambuyo pa kugwedezeka konkire, panali magazi ndi tsankho. Yankho: Chepetsani kumwa madzi, onjezerani nthawi yosakaniza, chepetsani 0.1%, kugwedezeka kwa konkriti sikutuluka magazi, ndikupanga zitsanzo za konkire ndi mphamvu zopondereza za masiku 28 kuti mufikire mphamvu zamapangidwe.
Nthawi yotumiza: Aug-31-2021
