Concrete Mix Zviratidzo, Mirayiridzo uye Slumps

Kusanganiswa kwekisiki kwakafanana nekacheki kake yakanaka. Concrete inoumbwa nezvikwata, Portland samende, mvura uye chero ipi zvayo yemazinesi kana chimiro inosanganiswa . Zvimwe zvinokonzerwa nekhonkiti zvichave zvakapinda mumhepo nekushandisa kusanganiswa kana sendimiti yekudzivirira. Kugadzirwa kwekemikisi kunogonawo kuva nemakemikari ayo anoshandiswa kuwedzera, kutadza kana kuvandudza kushandiswa kwezvinhu , kuderedza mune dzimwe nguva mvura yakawanda, kuwedzera simba rayo kana kuchinja maitiro chaiwo.

Sarudzo yakanakisisa yekrete yakakosha ibasa rinofanira kutarisa zvinodhura uye kuiswa kwezvinhu zvinenge zvichitarisirwa nekupa hukuru hwakanaka uye hunobatsira.

Concrete Mix Key Maitiro

A great concrete mix inofanira kufungisisa:

1. Workability - The concrete mix workability ndiyo nzvimbo inogadzirisa kusanganiswa kwekugadziriswa kwekuiswa nekugadzirisa zvakanaka, zvichibvumira kupedzisa chigadzirwa pasina kusarura.
2. Kubatana- Ichi chivako chinosarudza kufamba uye kukanganiswa kwekakisi kusanganiswa. Ichi chimiro chinotaridzwa maererano nekutenderera; kukwirira kwepamusoro kwakakosha iyo inonyanya kutarisirwa uye yakakura kufambira ichawanikwa.
3. Simba- Ichi ndicho chimwe chezvinhu zvinonyanya kukosha zvekakisi kusanganiswa, uye chiziviso chinonyanya kuzivikanwa chekrete, inoshandiswa kushandisa iko kukonzera kusagadzikana, mushure mekrete yakasvika mazuva makumi mana mushure mekudururwa.
4. Mvura-Cement Ratio- Ihutano hweW / C pa concrete kusanganiswa, inotsanangurwa sehukama uye chiyero pakati pehuremu hwemasenti, uremu hwemvura huri kuwedzerwa kune musanganiswa, pamwe nekuwedzera pozzolan. Ichi chimiro chine ukama hwakananga uye hwemhando pamwe chete nesimba rinosanganiswa.

1. Kugadzikana - A good concrete mix ichakupa konkrete inogona kumira yakaoma yemamiriro ekunze uye kuchinja pasina chiratidzo chekuora. Iyo yakanyanya kuramba yakakonzerwa ndeyekuti, kunyanya kusagadzikana nemamiriro ekunze akasiyana-siyana akadai sechando, kunya, kuoma, uye kupisa.
2. Kuwanda kwezvinhu-Kusanganiswa kwekakani kunogona kutsanangurwa kune zvimwe zvikumbiro zvakadai sewe counterweights, kuchengetedzwa kwemhepo, kusungirirwa kana kutsungirira uye kushorwa.

1. Kuchenesa Kuchenesa- Kusanganiswa kwekodzero kunofanirwawo kufungisisa nekupisa kunosunungurwa pasi pekemikari yekuita iyo inopera pamwero wakakodzera pasina kubudisa kupera kana shrinkage.

Concrete Mix Achishandisa ACI 211

Kugadzirwa kwekitikiti yakagadzirwa neAACI Komiti 211.1 imwe yenzira dzinoshandiswa zvikuru pakugadzira nzira ichakubvumira kuti:

1. Shandisa iyo nguva dzose kana zvisinganzwisisiki masangano.
2. Nzira dzakadaro dzakapoteredzwa kana dzakasanganiswa.
3. Shandisa kugadzira air entrained kana kwete-air-entrained konkanganisi.

Iyo ACI 211.1 nzira inogona kushandiswa kugadzira konkrit mix nekutevera matanho aya akareba:

1. Sarudza chinangwa slump
2. Sarudza huwandu hwehuwandu hwehuwandu, hukuru huwandu hwekakisi yakakanganiswa, zviri nani pakuderedza kushandiswa nekugadzirisa.
3. Kushandisa tafura ye ACI 6.3.3 inofungidzira zvinyorwa zvemvura nemhepo.
4. Sarudza chiyero chemvura-cement chekrete yakakanganiswa.
5. Verengai zvinyorwa zvesaiti nekuparadzanisa mvura yehuwandu nehuwandu hwemvura-cement.
6. Verengai mazana akawandisa zvakagadzirwa.
7. Verengai zvinyorwa zvose zvakanaka.
8. Gadzirisa huwandu hwemhepo ; wet aggregate inogona kuderedza zvakanyanya kuwanda kwemvura kuwedzerwa.
9. Ita zviedza zvekutengesa kuti uone kana sanganisi yekrete inosangana nemugadziro wako unoda.

Concrete Mix: Yakakurudzirwa Slumps

Paunenge uchigadzira kuchanganidzana kwekriti, unofanira kufungisisa rudzi rwekuderera kunotarisirwa.

Tevera izvi zvakakurudzirwa zvidimbu:

1. Kuvandudza nheyo dzasvingo nemakumbo etsoka:

2. a. Maximum Slump 75mm

   b. Minimum Slump 25mm

3. Nhanho dzemakumbo, mabasi, uye masvingo:

4. a. Maximum Slump 75mm

   b. Minimum Slump 25mm

5. Matanda uye masvingo akasimbiswa:

6. a. Maximum Slump 100mm

   b. Minimum Slump 25mm

7. Kuvaka mapuranga:

8. a. Maximum Slump 100mm

   b. Minimum Slump 25mm

9. Pavements and slabs:

10. a. Maximum Slump 75mm

    b. Minimum Slump 25 mm

11. Mass Concrete Mix:

12. a. Maximum Slump 75mm

    b. Minimum Slump 25mm