Page 195 - 《水资源与水工程学报》2023年第4期
P. 195

!34 " ! 4 #                       & ' ( ) & * + , -                               Vol.34No.4
               2023 $ 8%                JournalofWaterResources&WaterEngineering                 Aug.,2023

            DOI:10.11705/j.issn.1672-643X.2023.04.23


                         –µ¶—˜Í™DšÅpíd°lDE


                             1,2         1,2        1,2         1,2        1,2         3         1,2
                      Ó^ž , êëå , 05ì , 9í^ , îïð , 0ñò , -óô
                    (1. 0EFG%HI& @JKLMNO&P, /0 QR 712100;2. 0EFG%HI& ¹pNO;<é /
                            œn¹p4þí, /0 QR 712100;3. (G&P LMNO&P, /0 (G 719000)

                 H I: ·kÎU¹4*[ï©(CFPK) 4aWçÅ ÁÑT ?1 «¾Wì1o), ‹îV&óÛ、 i&ó
                 Û、 @óÛÎB‡“óÛ, x<KðV*ðYWh¬âo CFPK4aeZ^ab, ·1 CFPK4a1V ^N
                 OlQ, </ì1³。¯—ï˜:CFPK4aeZ²DKðV*ðY^EIžEI, ²Dh¬â^Eì“E
                 IžôFòš=。%ŸUS^ÑT ‹î CFPK4aô, /ïÎ&¨¼ë1¯ë, þÿûX^ïÎYZ、 û¥
                 ^PÑ#lWî@l。²D CFPK4a­Z^Eì, 1V ^ïÎYZWPÑ#lQÅéuX。U¹4*[ï©
                 µ€ TU·z&¨þÿÓ¯ý­W0Tý­^*[©, Qÿ.ì1ÑT 。
                 JKL: ÑT ; ¹4ý­; U¹4*[ï©; PÑ#l; 1V³
                 MNOPQ:TU472   7RSTU:A    7VWQ:1672643X(2023)04019108

                           Reinforcementofaeoliansandwithcalcium bicarbonate
                                         formedbypesudokarstification

                                                                                          1,2
                                                         1,2
                                         1,2
                                                                       1,2
                            CAIDongting ,FANHenghui ,LIXingyao ,GUOHongdong ,
                                                    1,2
                                                                3
                                                                                  1,2
                                     RENGuanzhou ,LIYugen,ZHAOChangzhi
                   (1.CollegeofWaterResourcesandArchitecturalEngineering,NorthwestA&FUniversity,Yangling712100,China;
                      2.InstituteofGeotechnicalEngineering/MuseumofProblematicRockandSoil,NorthwestA&FUniversity,
                          Yangling712100,China;3.SchoolofCivilEnineering,YulinUniversity,Yulin719000,China)
                 Abstract:Takingthesolutionofcalcium bicarbonateformedbypesudokarstification(CFPK)assand
                 solidificationmaterialandtheaeoliansandintheMuUsDesertasthereinforcementobject ,weconduc
                 tedaseriesofchemicaltests,mechanicaltests,hydraulictestsandmicroscopicteststoinvestigatethein
                 fluenceofcarbondioxidepressureandreactiontimeontheconcentrationofCFPKsolution.Thentheen
                 gineeringperformanceofsandsolidificationbyCFPKsolutionwasanalyzedtorevealthereinforcement
                 mechanismofCFPK.TheresultsshowthattheconcentrationofCFPKincreaseswiththeincreaseofcar
                 bondioxidepressure ,whereasincreasesfirstandthenstabilizeswiththeincreaseofreactiontime.After
                 thereinforcementtreatmentofCFPKsolution,aconsolidatedlayerisformedonthesurfaceoftheloose
                 aeoliansand,whichstrengthensthesurfacestrength,winderosionresistanceandwaterresistanceofthe
                 aeoliansand.WiththeincreaseoftheamountofCFPKsolution ,thesurfacestrengthandwinderosion
                 resistanceofthesolidifiedsandgraduallyincreases.TheCFPKcandecomposeamongthesandparticles
                 toformcalciumcarbonatethatactascementationandfillingagent ,bywhichtheaeoliansandcanbeef
                 fectivelystrengthened.
                 Keywords:aeoliansand;karstification;calciumbicarbonateformedbypesudokarstification(CFPK);
                 winderosionresistance;reinforcementmechanism




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