Lightweight Concrete Additives | High-Performance Foaming Agents for Cellular Concrete
The 40% Permeability Drop Iwe Ungangove Kufuratira
Heino nhamba inofanirwa kuita kuti urege kusanganisa: a 0.05 kuderedza mvura-simende reshiyo inogona kucheka kongiri permeability nekupfuura 40%. Icho hachisi dzidziso. Ndiyo capillary pore physics. Zvakadaro, tinoramba tichiona ma spec sheets pane mvura kuderedza admixture yepasi permeability kongiri inobatwa seyakachipa afterthought.
Tese tavepo. Rori yepombi yakamirira. Vashandi vari kutarisa. Iyo batch plant inotumira mutoro unotaridzika wakaoma. Saka unowedzera mvura. Kana kuipa, iwe unorasa mune yakawedzera garoni ye superplasticizer uchitarisira kuti inogadzirisa zvese. Mira. Ndipo panotangira hope dzehusiku.
Ngatifambei mumisungo yenyika chaiyo. Hapana fluff. Zvidzidzo zvawawana zvakaoma chete kubva makumi maviri emakore ekugadzirisa zvakaipa zvinosanganiswa.
1. Chii Chaizvo Imvura Inoderedza Admixture yeYakaderera Permeability Concrete?
Mumashoko akapfava: ikemikari inokubvumira kuderedza kusanganisa mvura ne 5% ku 30% pasina kuita kongiri isingashande. Mvura yakaderera inoreva yakaderera w/c ratio. Lower w/c zvinoreva macapillaries mashoma. Mashoma capillaries zvinoreva mvura, chlorides, uye sulfates haigoni kupinda mukati.
Vazhinji vashandisi paReddit vakanyora nezve kushandisa yepakati-renji yekudzikisa mvura pamadziro epasi uye vachiri kuwana hunyoro.. Sei? Vakashandisa mhando isiriyo. For real low permeability, iwe unoda zvinopfuura kungoita akajairwa Type A. Unoda a high-range water reducer (Rudzi F kana G) kana uri kunanga w/c pazasi 0.40.
2. Sei Low w/c Iine Basa Zvakanyanya?
Nokuti permeability haisi mutsara wekuita w/c. Pa w/c ye 0.50, une nzira huru ye pores. At 0.35, ma pores iwayo anonyanya kubviswa. Iyo mvura inoderedza musanganiswa weiyo yakaderera permeability kongiri ndicho chishandiso chako kuti usvike ikoko.
Asi heino musungo: kudarika-kuderedza. Takaona kusanganiswa ne w / c ye 0.28 izvo zvaiva nazvo zero kubuda ropa. Izvi zvinonzwika zvakanaka kusvika pasi pepurasitiki shrinkage yatsemuka semubhedha wakaoma wedhamu. Unoda kubuda ropa kuti upedze. Usadzingirire nhamba. Chase a specification.
3. Ndedzipi Mhando dzeMvura Dzinoderedza Admixtures?
Sarudza iyo isiriyo uye iwe haungawane pundutso kana njodzi yakatarwa-nguva. Heino kuparara:
| Mhando yeASTM | Kuderedza Mvura | Yakanakisa Kune Yakaderera Permeability |
|---|---|---|
| A (Normal) | 5-10% | Chete chekuvandudza kudiki |
| F (High Range) | 12-25% | Yakanakira w/c 0.35-0.40 |
| G (High Range, Retarding) | 12-25% | Zvekupisa kana kureba |
Kana iwe uri kuita tangi yemvura kana bhiriji dhizaini yakafumurwa kune deicing munyu, isu hatikurudzire Type A. Enda zvakananga kuType F kana G. Mari yekuwedzera inobhadhara pachayo mukusimba.
4. Zvinokanganisa Sei Cement Hydration?
Heino chikamu chehunyanzvi. Mvura inoderedza mvura ndeye surfactants. Ivo paradzira zvimedu zvesimende nekuputsa misangano. Izvi zvinofumura nzvimbo yakawanda yepamusoro ye hydration. Saka iwe unowedzera simba rekutanga pasina kuwedzera simende.
Asi kunyanya-dosing injodzi chaiyo. Isu takaona basa uko mutyairi akagadzirira-musanganiswa akawedzera imwe quart ye superplasticizer pane saiti. Kongiri haina kugadzirirwa 18 maawa. Vapedza vakafamba vachienda. Slab yaive yakashata. Namatira kune dosage yemugadziri mukati +/- 10%. Hapachina.
5. Ndeipi Iyo Yakakwana Dosage yeYakaderera Permeability?
Iko hakuna imwe-saizi-inokodzera-yese nhamba, asi heino murairo wegunwe kubva kune ruzivo rwemumunda:
- Target: 0.38 ku 0.42 w/c chiyero.
- Dosage: Tanga pa 4-6 oz pa 100 Makirogiramu esimende eRudzi F. Rongedza kusvika 10 oz max.
- Yambiro: Pamusoro 10 oz, unoisa panjodzi yekuparadzaniswa uye kunonoka zvakanyanya.
Gara uchiita batch yekuedza. Iyo 'floppy’ test (kuderera kwekuona) hausi muyedzo. Shandisa slump cone uye kuyera chaizvo.
6. Pane Matambudziko Anoenderana Nemamwe maAdmixtures?
Ehe, absolutely. This is where many projects fail. You cannot just dump in an air-entraining agent and a water reducer and hope they play nice.
- Conflict: Some high-range water reducers can reduce air content by 1-2%. You’ll need to bump up the AEA dosage.
- Sequence: Add the water reducer first, then the air entrainer. Never mix them neat in the same tank.
- Retarder combo: If you use Type G, you don’t need a separate retarder. Double retardation ruins finishing time.
One contractor on Reddit described adding a retarder to a Type G mix on a cold night. The concrete was still soft the next morning. They had to tear it out. Read the compatibility data sheet.
7. Real-World Applications: Where This Mix Shines
Iyo mvura inoderedza musanganiswa wepasi permeability kongiri haisi yeumbozha. Chinhu chinodiwa:
- Matangi emvura uye madhamu: Leakage haigamuchirwi.
- Basements uye pasi-giredhi madziro: Hydrostatic pressure inowana pore yega yega.
- Bridge decks: Kupinda kwechloride kubva ku deicing munyu kunokonzera rebar corrosion.
- Sulfate-yakafumurwa zvimiro: Zvidyarwa zvemvura yakasviba, nharaunda dzemugungwa.
Muzviitiko zvose, takaona musanganiswa wakanyatsogadzirwa weType F yekudzikisira mvura uye simende yakaderera-alkali inogadzira kongiri ine kukurumidza chloride permeability rating pazasi 1000 coulombs. Izvo 'zvakaderera zvikuru’ neASTM C1202.
8. Ndeapi Madhiri Aunofanira Kutarisisa?
Ngative vakatendeseka. Hapana musanganiswa mashiripiti. Hedzino njodzi chaidzo:
- Kuwedzera shrinkage: Yakakwira simende paste volume (nekuda kwemvura yakaderera) inogona kuwedzera kuomesa shrinkage. Shandisa shrinkage-reducing admixture kana zvichidiwa.
- Kuseta nguva kunochinja: Type F inomhanyisa zvishoma. Type G inononoka. Ronga purogiramu yako yekudira zvinoenderana.
- Kunyanya-dosing njodzi: Kusarurana, kubuda ropa, crusting, uye kupera simba. Remekedza dosage hwindo.
Taiva nebasa paiva nekongiri yakanyanya kuoma yekupedzisa nekuti chidzikisira mvura chainge chanyanya kushanda. Vanopedzisa vaifanira kushandisa spray-on finishing aid. Izvo zvinoda mari uye nguva.
9. Iwe Unoedza Sei Kana Iwe Ukanyatso Kuwana Yakaderera Permeability?
Usangofembera. Shandisa iyi miyedzo yakajairika:
- Rapid Chloride Permeability (RCP) – ASTM C1202: Matanho akazara mutengo wakapfuura. Target pazasi 1000 coulombs yekushomeka kwemukati.
- Kutora Mvura – ASTM C642: Chiratidzo chakanaka chepore volume.
- Sorptivity – ASTM C1585: Inoyera mwero wekunyudzwa kwemvura necapillary suction.
Mazhinji anotsanangura izvozvi anoda RCP mhinduro asati agamuchira musanganiswa. Kana usati waedza yako, uri bofu.
10. Sustainability: Deredza Cement, Kwete Performance
Heino kuhwina kwakavanzika. Nechidzikisiro chemvura chakakwirira, unogona kuderedza simiti ne 10-15% uku uchichengetedza iyo yakafanana w / c chiyero uye simba. Izvo zvinodzikisa CO2 tsoka yetsoka pasina kupa yakaderera permeability.
Takazviita pamapurojekiti akawanda. Tsiva 100 makirogiramu esimende ane chinodzikisira mvura chakadzikwa. Simba rakafanana. Same permeability. Mutengo wakaderera. Kongiri yakasvibirira.
Kurudziro Yedu: The Admixture Tinovimba
Mushure mekuyedza akawanda emhando, tinoramba tichidzoka Xypex Admix C-1000 kune zvakakosha pasi-permeability application. Iko kusanganiswa kwehupamhi hwemvura inoderedza uye crystalline yekudzivirira mvura. Haisi yekungodzikisa mvura - ndeye pluging ma pores asara.
Shandisa pa 2% nekurema kwesamende. Yako yekukurumidza chloride permeability inodonha pazasi 500 coulombs. Takazviona pamagaraji ekupaka uye zvidyarwa zvekuchenesa mvura.
Rega kushandisa generic naphthalene-based water reducers pane zvakakosha zvimiro. Simudzira musanganiswa wako.
Dzvanya apa kuti uodha Xypex Admix C-1000 izvozvi. Stock ishoma. Usarega imwe duru ichikundikana.
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ConcreteAndMore mutengesi akavimbika wepasirese wepamusoro-inoshanda kongiri admixtures uye makemikari ekuvaka.. Nemakore ehunyanzvi hweindasitiri, isu tine hunyanzvi mukupa zvigadziriso zvehunyanzvi zvinosanganisira polycarboxylate superplasticizers, kongiri fibers, defoamers, zvinopupa furo, uye advanced airgel thermal insulation products. Kana iwe uchifarira kongiri admixture, ndapota inzwa wakasununguka kutibata nesu!