Lub teeb pob zeb Additives | High-Performance Foaming Agents rau Cellular Concrete
Nov yog qhov tseeb txaus ntshai: 92% ntawm faulty lightweight blocks tsis ua hauj lwm vim ua npuas ncauj vau.
Qhov kev txheeb xyuas ntawd los ntawm kev kawm tsib xyoos ntawm kev tsim cov pob zeb ntawm tes tsis ua haujlwm. Ib tug biggest culprit? Ib tug tsis ruaj tsis khov foaming agent. Feem ntau manufacturers ncav cuag rau pheej yig hluavtaws surfactants. Lawv txuag nyiaj pennies ib block upfront. Lawv poob nyiaj tom qab hauv cov khoom tsis lees paub, tawg phab ntsa, thiab pluag rwb thaiv tsev tus nqi.
Cia kuv muab txoj kev sib txawv. Ib txoj kev uas siv a protein raws li pob zeb foaming tus neeg sawv cev rau lub teeb yuag blocks. Qhov no yog thev naus laus zis uas muab cov huab cua ruaj khov rau koj, tsis tu ncua ceev, thiab blocks uas ua tau tiag tiag. Kuv tau siv ntau tshaj li ob xyoo caum tsim cov neeg sawv cev no. kuv tau pom lawv ua tsis tiav hauv txoj kev zoo kawg nkaus. Kuv kuj tau pom lawv tsim cov blocks zoo tshaj plaws ntawm cov nroj tsuag tag nrho keeb kwm. Kuv xav pab koj ua tiav qhov kawg.
Yuav ua li cas yog ib tug protein raws li pob zeb ua npuas ncauj tus neeg sawv cev rau lub teeb yuag blocks?
Xav tias nws yog ib qho kev daws teeb meem ntawm hydrolyzed proteins. Feem ntau los ntawm cov tsiaj txhu xws li hooves, horn, los ntshav noj. Cov protein molecules tau tawg mus rau hauv cov saw me me. Qhov no tso cai rau lawv ua zoo li me me surfactants. Lawv cuab huab cua thiab tsim ntau lab tus me me, cais npuas.
Nws ua li cas thiaj tsim cov huab cua ruaj khov hauv cov cement?
Nws yog kev seev cev peb kauj ruam. Ua ntej, cov protein molecules txo qis qhov nro ntawm dej. Thib ob, lawv ua ke lawv tus kheej ntawm huab cua-dej interface. Peb, lawv tsim ib tug tawv, elastic zaj duab xis nyob ib ncig ntawm txhua lub npuas. Zaj movie no tseem ceeb heev. Nws resists siab alkalinity ntawm cement (pH 12-13). Nws resists tus neeg kho tshuab shear ntawm nws. Nws tiv taus lub siab ntawm cov cement paste nws tus kheej. Synthetic foams feem ntau rupture nyob rau hauv cov kev ntxhov siab no. Ib tug zoo formulated protein ua npuas ncauj tsis.
Yog vim li cas xaiv ib tug protein raws li pob zeb ua npuas ncauj tus neeg sawv cev rau lub teeb yuag blocks tshaj synthetics?
Cia kuv muab qhov ncaj rau koj kev sib piv. Tsis muaj fluff.
- Biodegradable thiab rov ua dua tshiab: Protein agents zom lawm. Synthetic surfactants tseem nyob hauv ib puag ncig. Rau cov ntawv pov thawj tsev ntsuab zoo li LEED, qhov no tseem ceeb.
- Tsawg toxicity: Protein agents tsis muaj teeb meem. Tsis muaj kev ua pa ua pa thaum sib tov. Tsis muaj dej paug hauv av los ntawm kev tshem tawm pov tseg.
- Superior ua npuas ncauj stability: Nyob rau hauv high-shear, high-pH ib puag ncig ntawm lub pob zeb sib tov, protein foams tuav lawv cov qauv ntev dua. Qhov no txhais tau hais tias lub qhov rais dav dua rau casting thiab vibrating.
Tam sim no rau kev sib tw. Ua siab ncaj rau lawv. Yog lawm, cov protein ntau tuaj yeem muaj ntxhiab tsw. Nws tsw zoo li tus dev ntub los yog cov pob txha siav. Qhov cua kom zoo ua qhov no. Yog lawm, koob tshuaj yog rhiab heev. Tsawg dhau ua rau tsis muaj npuas. Ntau dhau hloov koj qhov thaiv mus rau hauv daim txhuam cev. Koj yuav tsum ntsuas qhov tseeb. Yog lawm, lawv muaj peev xwm decompose nyob rau hauv sustained high kub. Rau chav tsev kho mob blocks, koj yuav tsum tau hloov cov mis protein.
Yuav ua li cas kuv xam qhov raug npaum li cas ntawm ib tug protein raws li pob zeb ua npuas ncauj tus neeg sawv cev rau lub teeb yuag blocks?
Tsis muaj ib tus lej khawv koob. Nws nyob ntawm koj lub hom phiaj ceev. Cia kuv taug kev koj los ntawm tus qauv mus kom ze.
Step-by-step dosage guide
- Txheeb xyuas lub hom phiaj yas ntom ntom. Rau ib 1200 kg/m³ ib, koj xav tau roughly 20-25% entrained cua los ntawm ntim.
- Pib nrog lub hauv paus. Rau ib tug raug protein neeg sawv cev concentrate (30% cov khoom khib nyiab), pib ntawm 0.5% los ntawm qhov hnyav ntawm cement. Qhov ntawd yog 5 grams ib kilogram ntawm cement.
- Npaj koj cov npuas dej cais. Dilute tus neeg sawv cev nrog dej. Hom dilution yog 1 tus neeg sawv cev rau 20 ntu dej (1:20). Siv lub tshuab ua npuas ncauj. Tsim ib qho chaw ruaj khov, ua npuas ncauj. Ua npuas ncauj yuav tsum zoo li shaving cream, tsis yog xab npum npuas.
- Ntxiv ua npuas ncauj rau koj ntub dej sib tov. Tsis txhob ntxiv cov khoom nyoos ncaj qha rau cov khoom xyaw qhuav. Koj yuav tsim ua npuas ncauj ntawm qhov tsis sib xws. Ntxiv ua npuas ncauj maj mam. Mix rau qhov siab kawg ntawm 2 feeb tom qab tag nrho ntxiv.
- Ntsuas qhov slump thiab ntom. Cov pob zeb tshiab yuav tsum muaj slump ntawm 10-15 mm. Yog ua npuas ncauj tawg, lub slump yuav spike. Koj qhov ceev yuav nce ntxiv. Yog qhov no tshwm sim, txo lub sij hawm sib tov los yog kho cov npuas kom muaj nuj nqis.
| Kauj ruam | Kev ua | Kev ntsuas | Sau ntawv |
|---|---|---|---|
| 1 | Teem lub hom phiaj ntub dej | e.g., 1200 kg/m³ | Siv lub khob ntom ntom kom raug |
| 2 | Xam cov ntsiab lus cua xav tau | ~ 20-25% los ntawm ntim | Siv lub ntsuas cua rau kev txheeb xyuas |
| 3 | Npaj ua npuas ncauj | 1:20 tus neeg sawv cev rau dej (los ntawm ntim) | Dej kub yog 20-25 ° C yog qhov zoo tagnrho |
| 4 | Tsim ua npuas ncauj | Ua npuas ncauj ntom ntom: 80-100 g/L | Kho lub tshuab hluav taws xob cua siab (3-5 bar) |
| 5 | Ntxiv ua npuas ncauj sib tov | 0.5-1.5% los ntawm qhov hnyav ntawm cement | Pib qis, ntxiv nyob rau hauv increments |
| 6 | Xyuas cov pob zeb tshiab | Slump: 10-15 mm; Qhov ntom: ± 50 kg / m³ ntawm lub hom phiaj | Yog slump siab dhau lawm, ua npuas ncauj yog collapsing |
Dab tsi sib xyaw tsim ua haujlwm zoo tshaj plaws nrog cov protein raws li cov pob zeb ua npuas dej rau cov khoom sib sib zog nqus?
Ntawm no yog kuv mus-mus rau qhov pib rau cov tsis-load-bearing blocks. Tweak raws li koj cov ntaub ntawv hauv zos.
- Cement: Ordinary Portland Cement (OPC) 43 los yog 53 qib. 300-350 kg/m³.
- Fine aggregate: Cov xuab zeb zoo (dhau 2 mm siv). 600-800 kg/m³.
- ya tshauv (xaiv tau): 30% hloov cov cement. Txhim kho kev ua haujlwm thiab txo tus nqi.
- Dej: Dej-rau-cement ratio ntawm 0.40 rau 0.45. Cia nws qis. Cov dej ntau dhau tua ua npuas ncauj stability.
- Ua npuas ncauj: Ua ntej tsim los ntawm tus neeg sawv cev protein. Ntxiv kom ua tiav lub hom phiaj ntub dej.
Yuav ua li cas yog compatibility nrog lwm yam additives?
Ceev faj. Cov dej txo qis siv tau, tab sis tsuas yog naphthalene-based sawv daws yuav. Tsis txhob siv polycarboxylate ether (PCE) superplasticizers. Lawv destabilize cov protein ua npuas ncauj. Accelerators (calcium chloride, 1-2% los ntawm qhov hnyav ntawm cement) muaj kev nyab xeeb. Lawv yeej pab ua npuas ncauj sai, txo kev pheej hmoo ntawm kev tawg. Retarders yuav tsum zam. Lawv khaws cov kua cement ntev dhau. Ua npuas ncauj muaj sij hawm khiav.
Kuv puas tuaj yeem siv cov protein raws li cov pob zeb ua npuas dej rau cov khoom sib sib zog nqus hauv cov phab ntsa semi-load-bearing?
Yog lawm. Tab sis koj yuav tsum kho koj cov kev cia siab. Ib qho thaiv nrog ntub ntom ntom ntawm 1200 kg/m³ yuav muaj compressive zog ntawm roughly 3-5 MPa thiab 28 hnub. Qhov ntawd yog txaus rau muab faib phab ntsa thiab ob-zaj dab neeg load-bearing phab ntsa (nrog rau engineering tsim nyog). Tsis txhob tshaj 30% huab cua cov ntsiab lus yog tias koj xav tau cov qauv kev ncaj ncees. Saum toj no 30%, lub zog poob ntawm pob tsuas. Khaws koj cov khoom ua npuas ncauj tswj.
Qhov no yuav ua li cas txhim kho thermal rwb thaiv tsev thiab hluav taws kub?
Cov kab mob huab cua yog qhov tseem ceeb. Cua yog ib tug txaus ntshai conductor ntawm tshav kub. A 200 mm tuab block ua nrog a protein raws li pob zeb foaming tus neeg sawv cev rau lub teeb yuag blocks tuaj yeem ua tiav R-tus nqi ntawm kwv yees 2.5-3.0 m²·K/W. Qhov ntawd yog plaub zaug zoo dua li cov txheej txheem ntom ntom ntom ntom. Rau hluav taws kub, cov yeeb yaj kiab protein nws tus kheej hlawv sai heev. Tab sis cov huab cua nyob twj ywm. Lawv muab ib qho barrier rau cua sov hloov. A 150 mm thaiv tuaj yeem ua tiav qhov ntsuas hluav taws 2-teev. Ntsuam xyuas qhov no hauv koj lub chaw kuaj mob. Cov lej sib txawv nrog kev sib xyaw tsim.
Dab tsi yog qhov cuam tshuam tus nqi ntawm kev siv cov protein raws li cov pob zeb ua npuas ncauj rau cov khoom sib sib zog nqus?
Raw protein tus neeg sawv cev raug nqi ntau dua li hluavtaws surfactants. Cia siab tias yuav them 1.5x rau 2x ib liter. Tab sis koj tus nqi tag nrho ib ntu tuaj yeem qis dua. Vim li cas? Vim tias cov npuas dej ruaj khov dua. Koj yuav tsum tau ua npuas ncauj tsawg dua kom ua tiav tib qhov ceev. Koj muaj tsawg dua kev tsis lees paub. Koj cov blocks sib dua, yog li koj nkoj ntau dua ib lub tsheb thauj khoom. Ua ib qho kev ntsuam xyuas tus nqi tag nrho ntawm koj daim ntawv qhia tshwj xeeb. Tsis txhob cia li saib tus nqi ntawm tus neeg sawv cev hauv kev sib cais.
Kev tsim khoom thiab sustainability: kuv yuav tsum nrhiav dab tsi?
Nrhiav ib tus neeg muag khoom uas tuaj yeem muab Daim Ntawv Pov Thawj Kev Ntsuam Xyuas (COA) rau txhua batch. Xav tau cov ntsiab lus protein ntawm 28-32% thiab pH ntawm 6.5-7.5. Nug txog lawv qhov chaw. Puas yog los ntawm kev tua tsiaj pov tseg? Qhov ntawd yog ib qho txuas ntxiv, ncig qhov chaw. Cov txheej txheem tsim khoom puas siv enzymes lossis acids? Enzyme-hydrolyzed proteins zoo ib yam thiab muaj ntxhiab tsw tsawg. Rau LEED cov ntsiab lus, tus neeg sawv cev nws tus kheej yuav tsis suav, tab sis qhov txo qhov hnyav ntawm koj cov blocks txhais tau tias tsawg dua cov qauv hlau xav tau hauv lub tsev. Qhov ntawd tuaj yeem khwv tau cov ntsiab lus hauv Cov Khoom Siv thiab Cov Khoom Siv.
Koj mus tom ntej: xeem, tsis txhob twv
Koj tuaj yeem tsim cov khoom hnyav uas sib xws, muaj zog, thiab insulate zoo. Blocks uas khwv tau koj tus nqi hwm. Blocks uas koj cov neeg muas zaub yuav ntseeg. Pib me me. Kuaj nruj. Ntsuas kom ntseeg tau.
Tus neeg muab khoom
ConcreteAndMore yog ib qho kev ntseeg siab thoob ntiaj teb cov khoom lag luam ntawm cov khoom siv ua haujlwm siab thiab cov tshuaj siv tsim kho.. Nrog xyoo ntawm kev lag luam kev txawj ntse, peb tshwj xeeb hauv kev muab cov kev daws teeb meem tshiab suav nrog polycarboxylate superplasticizers, pob zeb fibers, defoamers, foaming agents, thiab advanced airgel thermal rwb thaiv tsev cov khoom. Yog tias koj txaus siab rau kev sib xyaw ua ke, thov koj xav tiv tauj peb!