Ready-mix mortar chinhu chekuvakisa chakagadzirirwa kushandiswa muzvirongwa zvekuvaka.Inogadzirwa nekusanganisa simenti, jecha nemvura muzvikamu zvakasiyana, zvichienderana nesimba rinodiwa uye kusimba kwechigadzirwa chakapedzwa.Pamusoro peizvi zvakakosha zvinongedzo, yakagadzirira-musanganiswa dhaka zvakare ine huwandu hwemakemikari ekuwedzera akagadzirirwa kuvandudza mashandiro ayo uye kusimba.
Chemical additives zvinhu zvinowedzerwa kune chinhu kuwedzera kana kushandura hunhu hwayo.Kune akagadzirira-akasanganiswa madhaka, izvi zvinowedzera zvinowanzosarudzwa nekuda kwekugona kwavo kuvandudza kushanda, kupfupisa nguva yekumisikidza, kuwedzera kuchengetwa kwemvura, uye kuwedzera simba uye kusimba kwechigadzirwa chakapedzwa.
Muchikamu chino tichatarisa mamwe akakosha emakemikari ekuwedzera anowanzo shandiswa mukugadzirira-musanganiswa dhaka kugadzira.
1.Retarder
Retarders ikirasi yemakemikari additives anoshandiswa kuderedza nguva yekugadzika yesimenti-based materials.Vanoshanda nokunonotsa kuita kwemakemikari kunoitika apo simende inosangana nemvura, zvichipa vashandi nguva yakawanda yokupedza basa dhaka risati ragadzika.
Maretarder anonyanya kubatsira mumamiriro ekunze ekupisa kana pakushanda nedhaka yakawanda, iyo inogona kunge yakakurumidza kuiswa.Vanowanzowedzerwa kumusanganiswa wedhaka pamwero we 0.1% kusvika 0.5% ye simenti.
2. Plasticizer
Plasticizers imwe mhando yekemikari yekuwedzera inowanzoshandiswa mumatope akagadzirira-akasanganiswa.Chinangwa chavo ndechekuderedza viscosity yedhaka, zvichiita kuti zvive nyore kubata nekushandisa.
Plasticizers anowanzowedzerwa kumusanganiswa wedhaka pachiyero che 0.1% kusvika 0.5% ye simenti.Vanovandudza maitiro ekuyerera kwedhaka, zvichiita kuti zvive nyore kupararira uye kuwana yunifomu yepamusoro pekupedzisira.
3. Mvura inochengetedza mumiririri
Mvura-inochengetedza mumiriri imhando yemakemikari ekuwedzera anovandudza mashandiro ekuchengetedza mvura edhaka.Chinangwa chavo ndechekuderedza kuwanda kwemvura yakarasika nekubuda mumhepo panguva yekurapa, iyo inobatsira kudzivirira shrinkage uye kuputika.
Mishonga inochengetedza mvura inowanzowedzerwa kumusanganiswa wedhaka pamwero we 0.1% kusvika 0.2% ye simenti.Vanovandudza kushanda kwedhaka, zvichiita kuti zvive nyore kuisa uye kubudirira kutsetseka, kunyange pamusoro.
4. Air-entraining agent
Air-entraining agents anoshandiswa kuunza tutubu twemhepo mumusanganiswa wedhaka.Aya mabhuru anoita sezvidiki zvekuvhundutsa, zvichiwedzera kusimba uye kutonhora-kunyungudika kuramba kwechigadzirwa chakapedzwa.
Air-entraining agents anowanzowedzerwa kumusanganiswa wedhaka pachiyero che 0.01% kusvika 0.5% ye simenti.Vanogona kuvandudza kushanda kwedhaka uye kuita kuti zvive nyore kuisa, kunyanya kana uchishanda neaggregates akaoma.
5. Accelerator
Accelerators makemikari ekuwedzera anoshandiswa kukurumidza kugadzika nguva yedhaka.Iwo anowanzo shandiswa mukutonhora kwemamiriro ekunze kana kana dhaka richida kupedzwa nekukurumidza.
Accelerators inowanzowedzerwa kumusanganiswa wedhaka pamwero we 0.1% kusvika 0.5% ye simenti.Vanogona kubatsira kuderedza nguva inotora kuti dhaka rirape uye risvike simba rakazara, izvo zvakakosha pazvirongwa zvekuvaka zvinotora nguva.
6. High-effective water-reduction agent
Superplasticizer ndeye plasticizer inoshandiswa kuwedzera kushanda kwedhaka.Ivo vanoshanda nekuparadzira masimende masimende zvakanyanya kuenzana mukati memusanganiswa wedhaka, nekudaro vachivandudza kuyerera kwayo.
Superplasticizers inowanzowedzerwa kumusanganiswa wedhaka pachiyero che 0.1% kusvika 0.5% ye simenti yemukati.Vanovandudza kushanda kwedhaka, zvichiita kuti zvive nyore kuisa uye kubudirira kutsetseka, kunyange pamusoro.
Ready-mix mortar chinhu chakakurumbira chekuvaka chinoshandiswa zvakanyanya mumhando dzakasiyana-siyana dzekuvaka.Inosanganisira musanganiswa we simenti, jecha nemvura, pamwe chete nehuwandu hwemakemikari ekuwedzera anoshandiswa kuvandudza kushanda kwayo uye kusimba.
Mamwe emakemikari akakosha ekuwedzera anoshandiswa mudhaka yakasanganiswa anosanganisira retarders, plasticizers, mvura inochengetedza maajenti, air intraining agents, accelerators uye superplasticizers.Izvi zvinowedzera zvakasarudzwa kuti zvivandudze mashandiro, kupfupisa nguva yekumisikidza, kuwedzera kuchengetwa kwemvura uye kuwedzera simba uye kusimba kwechigadzirwa chakapedzwa.
Nekunzwisisa basa rechimwe nechimwe chekuwedzera makemikari, nyanzvi dzekuvaka dzinogona kusarudza iyo chaiyo mhando yeyakagadzirira-musanganiswa dhaka kune yavo chaiyo purojekiti uye kuona kuti inosangana nekuita kwayo uye kusimba kwezvinodiwa.
Nguva yekutumira: Sep-26-2023