Ikhonkrithi ehlanganisiweyo ekhaphukhaphu (LGC), enye yezinto ezintsha zokwakha, ikhonkrithi ekhaphukhaphu eyenziwe nge-aggregate ekhaphukhaphu kunye nobuninzi bobuninzi obungekho ngaphezulu kwe-1900kg / m3, ekwabizwa ngokuba yi-porous aggregate lightweight concrete.

I-concrete edibeneyo elula ineempawu

I-concrete ye-aggregate ekhanyayo ineempawu zobunzima bokukhanya, ukufakwa kakuhle kwe-thermal kunye nokumelana nomlilo.Xa kuthelekiswa nekhonkrithi eqhelekileyo yebakala elifanayo, amandla oxinzelelo lwekhonkrithi ye-lightweight aggregate yesakhiwo inokufikelela kwi-70 MPa, enokunciphisa ubunzima obufileyo ngaphezu kwe-20-30%.Ulwakhiwo lwe-thermal insulation lightweight aggregate concrete luhlobo lwento eludongeni olunentsebenzo entle yokufakelwa kwe-thermal, kunye ne-thermal conductivity yayo yi-0.233-0.523 w / (m * k), eyi-12-33% kuphela yekhonkrithi eqhelekileyo.I-concrete ehlanganisiweyo ekhaphukhaphu inokusebenza kakuhle kwe-deformation kunye nemodyuli ephantsi ye-elastic.Ngokubanzi, ukucutheka kunye nokukhasa nazo zinkulu.I-elastic modulus ye-concrete edibeneyo ekhaphukhaphu ihambelana ngokuthe ngqo nobuninzi bayo kunye namandla.Ubuninzi be-bulk density kunye namandla asezantsi, iyancipha i-elastic modulus.Xa kuthelekiswa nekhonkrithi eqhelekileyo yebakala elifanayo, i-modulus elastic of lightweight aggregate concrete malunga ne-25-65% ephantsi.

I-concrete ehlanganisiweyo ekhaphukhaphu isetyenziswa ngokubanzi kwizakhiwo zoshishino kunye nezoluntu kunye nezinye iiprojekthi, ezinokunciphisa ubunzima besakhiwo, ukuphucula ukusebenza kwe-seismic yesakhiwo, ukugcina inani lezinto eziphathekayo, ukuphucula ukusebenza kakuhle kwecandelo lokuthuthwa kunye nokuphakamisa, ukunciphisa isiseko. ukulayisha kunye nokuphucula umsebenzi wokwakha (i-thermal insulation kunye nokumelana nomlilo, njl.).Ke ngoko, ngeminyaka yee-1960s neye-1970, itekhnoloji yokuvelisa kunye nokusetyenziswa kwekhonkrithi ekhaphukhaphu ehlanganisiweyo yaphuhliswa ngokukhawuleza, ngakumbi kwicala lobunzima bokukhanya kunye namandla aphezulu.Yayisetyenziswa ngokubanzi kwiindawo eziphakamileyo, izakhiwo ezide kunye nezakhiwo ezivaliweyo, ngokukodwa kwimveliso yeebhloko ezincinci ezingenanto kwiindonga.I-China yaqala ukuphuhlisa i-aggregate ekhaphukhaphu kunye ne-concrete edibeneyo ekhaphukhaphu ukususela ngo-1950s.Isetyenziselwa ubukhulu becala iipaneli zodonga zangaphandle ezinkulu kunye neebhloko ezincinci ezingenanto kwizakhiwo zoshishino kunye nezoluntu, kwaye ixabiso elincinci lisetyenziselwa izakhiwo ezithwala imithwalo kunye nezakhiwo ezishushu zezakhiwo eziphakamileyo kunye nebhulorho.

I-concrete ehlanganisiweyo elula

Iintlobo eziphambili zekhonkrithi edibeneyo ekhaphukhaphu

Ikhonkrithi edityanisiweyo ekhaphukhaphu yohlulwe ngokwendalo edityanisiweyo yobunzima bekhonkrithi ngokweentlobo zeaggregate ekhaphukhaphu.Okufana nekhonkrithi yepumice, ikhonkrithi yecinder kunye ne-porous tuff concrete.Ikhonkrithi ehlanganisiweyo ekhaphukhaphu eyenziweyo.Okufana nesamente yodongwe yeceramsite, ikhonkrithi ye-shale ceramsite, ikhonkrithi eyandisiweyo yeperlite kunye ne-organic lightweight aggregate concrete.Inkunkuma yemizi-mveliso lightweight aggregate concrete.Ezifana nesamente ikhonkrithi, fly ash ceramsite ikhonkrithi kunye nokwandiswa slag bead ikhonkrithi.

Ngokohlobo lwe-aggregate efanelekileyo, inokwahlulwa ibe: yonke ikhonkrithi ekhaphukhaphu.Ikhonkrithi edityanisiweyo ekhaphukhaphu kusetyenziswa isanti elula njengeaggregate ecolekileyo.Isanti ukukhanya ikhonkrithi.Ikhonkrithi edityanisiweyo ekhaphukhaphu enenxalenye okanye yonke isanti eqhelekileyo njengeaggregate ecolekileyo.

Ngokusetyenziswa kwayo, inokwahlulwa ibe: i-thermal insulation lightweight aggregate concrete.Ubuninzi bayo bobuninzi bungaphantsi kwe-800 kg / m3, kwaye amandla ayo oxinzelelo angaphantsi kwe-5.0 MPa.Isetyenziselwa ikakhulu kwimvulophu yokufakelwa kwe-thermal kunye nesakhiwo se-thermal.Ukufakwa kwe-thermal kolwakhiwo olukhaphukhaphu ikhonkrithi edibeneyo.Ubuninzi bayo bobuninzi buyi-800-1400kg / m3, kwaye amandla ayo oxinzelelo yi-5.0-20.0 MPa.Isetyenziselwa ubukhulu becala kwizakhiwo ezivaliweyo eziqinisiweyo nezingaqiniswanga.Ulwakhiwo oluluqilima oludityanisiweyo lwekhonkrithi.Ubuninzi bayo bobuninzi buyi-1400-1800 kg / m3, kwaye amandla ayo oxinzelelo yi-15.0-50.0 MPa.Isetyenziswa ikakhulu kumalungu athwele umthwalo, amalungu acinezelekileyo okanye izakhiwo.