Simende yePortland yeFly Ash

Simende yePortland
Dota rinobhururuka Simende yePortland inoreva musanganiswa wePortland simende clinker neash inobhururuka, yakasanganiswa nehuwandu hwakakodzera hwegypsum uye yozokuyiwa, zita rekodhi PF Chero chinhu chinosimbisa hydraulic chakagadzirwa nePortland simende clinker, ash inobhururuka uye huwandu hwakakodzera hwegypsum ground chinonzi ash inobhururuka. Simende yePortland, zita rekodhi PF Huwandu hweash inoputika inowedzerwa kusimende i20% ~ 40% nehuremu, uye simba rayo regiredhi uye zvinodiwa pazera rega rega zvakafanana nezvinoitwa nesimende yePortland slag.

Zvinhu zvisina kugadzirwa
Yakagadzirwa nePortland cement clinker uye dota renhunzi, yakasanganiswa ne gypsum yakakwana yozokuyiwa. Kodhi PF
Chero chinhu chinosimbisa hydraulic chakagadzirwa nesimende yePortland clinker, dota rinoputika uye huwandu hwakakodzera hwevhu regypsum hunonzi dota rinoputika rePortland cement, rine zita rekuti PF Huwandu hwedota rinoputika rinowedzerwa kusimende i20% kusvika 40% nehuremu. Zvinotenderwa kutora chikamu mu granulated blast furnace slag isingapfuure 1/3 yehuwandu hwese hwezvinhu zvakasanganiswa. Panguva ino, huwandu hwese hwezvinhu zvakasanganiswa hunogona kusvika 50%, asi huwandu hwedota rinoputika hahufanirwe kunge huri pasi pe20% kana kupfuura 40%.
Zvinhu zvirimo
Maumbirwo esimende yefuruu yakakora zvishoma, nzvimbo yemukati chaiyo idiki, uye kugona kwemvura kushoma, uye kudiwa kwemvura yefuruu yakakora, saka kuderera kwakaoma kwesimende yefuruu yakakora, uye kuramba kutsemuka kwakadererawo. Pamusoro pezvo, zvakafanana nesimende yakajairika yakasanganiswa nezvinhu zvinoshanda, ine kupisa kwakaderera uye kuramba ngura kwakasimba.
Kushanda
Hunhu hwakasiyana hwesimende yePortland ash ndeinotevera:
(1) Simba rekutanga rakaderera, uye simba rekuwedzera rinononoka rakakura: simba rekutanga resimende yeash inobhururuka rakaderera, uye simba rekutanga rinoderera zvakanyanya nekuwedzera kwehuwandu hweash inobhururuka. Nekuti muviri we vitreous uri muash inobhururuka wakasimba zvakanyanya, zvidimbu zveash inobhururuka zvinoparadzwa zvishoma nezvishoma neCa(OH)2 panguva yekunyorovesa simende yeash inobhururuka, saka kukura kwesimba resimende yeash inobhururuka kunonyanya kuratidzwa muchikamu chekupedzisira. , simba rayo rekuwedzera rinononoka rakakura, uye rinogona kutopfuura simba rekupedzisira resimende yePortland inoenderana.
(2) Kushanda zvakanaka uye kuoma kudiki: Nekuti zvidimbu zvakawanda zvemadota enhunzi zvakavharwa uye zvakasimba, uye nzvimbo yemukati nemvura inonyungudika nemorekuru imwe chete idiki, simende yemadota enhunzi inoshanda zvakanaka uye kuoma kudiki. , ine hunhu hwekusimba kwakanyanya kwekudhonza uye kuramba kutsemuka kwakanaka. Iyi mukana wakajeka wesimende yemadota enhunzi.
(3) Kudzivirira ngura zvakanaka: simende yefuruu ine simba guru rekudzivirira ngura kumvura yakachena nesulfate. Nekuda kwekusanganiswa kweSiO2 inoshanda mufuruu ...
(4) Kupisa kushoma kwemvura: Kumhanya kwemvura kwesimende yefuruu kunononoka uye kupisa kwemvura kunoderera, kunyanya kana huwandu hwefuruu hunowedzerwa hwakawanda, kudzikira kwekupisa kwemvura kunoonekwa zvakanyanya.

Simende yePortland
Zvese zvePortland simende clinker zvinoumbwa zvakanyanya necalcium silicate, limestone kana granulated blast furnace slag ine pasi pe5%, uye hydraulic cementitious material yakagadzirwa negypsum yakakuyiwa zvakanaka zvinonzi Portland simende. Pasi rose inozivikanwa sePortland Cement.
Kupatsanura
Simende yePortland yakakamurwa kuita mhando mbiri, rudzi rwekutanga rwesimende yePortland isina zvinhu zvakasanganiswa inonzi simende yePortland, kodhi P·I; zvinhu zvakasanganiswa nedombo re limestone kana granulated blast furnace slag isingapfuure 5% yehukuru hwesimende inonzi II Type Portland simende, kodhi P·Ⅱ.
Kuumbwa kwezvicherwa
Chimiro chikuru chezvicherwa zvePortland simende ndeichi: tricalcium silicate, dicalcium silicate, tricalcium aluminate, uye tetracalcium ferric aluminate. Tricalcium silicate inosarudza simba rePortland simende mukati memavhiki mana; dicalcium silicate inongoshandisa simba rayo mushure memavhiki mana, uye inosvika simba retricalcium silicate kwemavhiki mana mugore rinenge rimwe; simba retricalcium aluminate Inoshanda nekukurumidza, asi simba rayo rakaderera, uye inoita basa rakati mukusimba kwePortland simende mukati memazuva 1 kusvika matatu kana kupfuura; Simba resimende yeacid salt diki.