Nws tau tshwm sim tias qhov kev hloov pauv ntawm cov av nthuav dav tshwm sim thaum cov txiv qaub thiab ya tshauv sib xyaw nrog cov av nthuav dav. Kev txwv yas nce los ntawm kev sib xyaw cov txiv qaub thiab cov kua txwv txo qis los ntawm kev sib xyaw cov hmoov tshauv, uas txo cov plasticity Performance index plasticity Performance index Lub plasticity Performance index yog qhov loj ntawm cov dej ntau yam uas cov av nthuav tawm cov khoom yas. PI yog qhov txawv ntawm cov kua txwv thiab cov yas txwv (PI=LL-PL). https://en.wikipedia.org › wiki › Atterberg_limits
Atterberg txwv - Wikipedia
Yuav ua li cas thaum txiv qaub stabilization ntawm av?
Soil stabilization tshwm sim thaum txiv qaub ntxiv rau cov av reactive kom tsim tau lub zog mus ntev los ntawm cov tshuaj tiv thaiv pozzolanic. Cov tshuaj tiv thaiv no ua kom ruaj khov calcium silicate hydrates thiab calcium aluminate hydrates raws li calcium los ntawm cov txiv qaub reacts nrog cov aluminates thiab silicates solubilized los ntawm av nplaum.
txiv qaub txhim kho cov cuab yeej ntawm cov av nthuav dav li cas?
Tshuaj stabilization, nyob rau hauv cov tshuaj ntxiv rau expansive av nplaum rau txo heave, kuj tau ntsib nrog kev vam meej. Txiv qaub tau pom tias yog qhov zoo tshaj plaws thiab kev lag luam ntawm tag nrho cov khoom ntxiv. Ntxiv cov txiv qaub rau nthuav av kom txo tau qhov o thiab ua kom muaj peev xwm ua haujlwm thiab lub zog.
Yuav ua li cas kom ruaj khov av nthuav dav?
Kev ruaj khov ntawm cov av nthuav dav los ntawm kev sivadditives xws li txiv qaub, ya tshauv lossis cementyog cov ntaub ntawv zoo (Du li al., 1999, Nalbantoglu, 2004, Nalbantoglu thiab Gucbilmez, 2001, Rao et al., 2001, Yong and Ouhadi, 2007) thiab muaj kev lig kev cai rau kev tshem tawm ntawm lub zog nthuav dav ntawm cov av.
Yuav ua li cas yog txoj hauv kev tseem ceeb tshaj plaws siv rau kev ruaj khov ntawm cov av uas nthuav dav?
Vim cov xwm txheej no, lime yog tus neeg sawv cev nrov tshaj plaws siv los ua kom ruaj khov ntawm cov av nplaum uas nthuav dav. Lwm cov tshuaj uas tuaj yeem muab cov calcium cations kom ruaj khov rau cov av nplaum loj xws li calcium chloride, portland cement, thiab calcareous fly ash.
