【摘要】 为有效解决垃圾场渗滤液的渗漏问题,用于垃圾填埋场隔离墙防渗工程,通过正交试验优选出了BFCF浆材配方(质量百分比):膨润土22%~28%、粉煤灰17%~23%、水泥18%~24%、纤维0.06%~0.12%、纯碱0.8%~1.5%、NUF-5减水剂0.4%~0.7%,余之为水。该浆材具有良好可灌性,浆材结石率>99.0%,其固结体28d的渗透系数、抗压强度和弹性模量分别为(0.12~0.98)×10-7cm/s、0.75~2.1 MPa和230~350 MPa。BFCF浆材具有良好吸附阻滞性能,对磷、铵态氮等无机物阻滞率在98%以上,对CODCr、BOD5阻滞率在83.74%以上,对Hg、As、Pb、Cd等重金属离子均有很好的阻滞作用,阻滞率均在99.91%以上,满足了垃圾填埋场隔离墙对浆材渗透性及抗压强度的要求,具有广阔的市场应用前景。更多还原

【Abstract】 To find the effective solution of leakage of landfill leachate,using for landfill barrier anti-seepage engineering optimize the BFCF grouting formula( mass percent) through orthogonal test to: 22% ~ 28% bentonite, 17% ~ 23% fly ash,0. 06% ~ 0. 12% cement fiber,0. 8% ~ 1. 5% soda ash,0. 4% ~ 0. 7% NUF-5 water reducing agent and the rest is water. This grouting material has good groutability with a grouting concretion rate over 99. 0%,the consolidation coefficient of permeability of 28d compressive strength and elastic modulus are respectively( 0. 12 ~ 0. 98) × 10- 7cm / s,0. 75 ~ 2. 1 MPa and 230 ~ 350 MPa,BFCF grouting has good adsorption retardation,for ammonium nitrogen phosphorus and other inorganic blocking rate over 98%,the CODCr,BOD5block rate is over 83. 74%,the heavy metal ions such as Hg,As,Hg,Cd has very good block effect,with a block rate over 99. 91%. This material,meets the requirement of grouting of the landfill barrier permeability and the compressive strength and prospectively can be widely applied in the market.更多还原