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Changes of pore size and of hydraulic conductivity by adding lime in compacting clay liners

机译：通过在压实粘土衬里添加石灰来改变孔径和导水率

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The paper presents results of a laboratory study on the compacted mixture of clayey silt with I 8% of CaO. Adding of CaO increased the maximum dry density and decreased the optimum water content. In the case of 4-8 % of added C'aO the siøe of the pores kept decreasing until 360 of curing days, while with 2% of CaO the decrease stopped at 120 days and no further pore si/e changes were detected with 1% of added CaO after 28 curing days. The hydraulic conductivity of the treated soil increased from ca 10~(-9) ms~(-1) to 10~(-7) ms~(-1) on adding CaO, but then decreased back to the order of 10~(-9) ms~(-1) during several days of carrying out the permeability tests. At pH higher than 1 1.7 the pozzolanie reaction occurred and the soil voids changed due to the new mineral phases, hydrated calcium aluminatcs especially.
机译：本文介绍了对粘土粉与8％CaO的压实混合物进行实验室研究的结果。 CaO的添加增加了最大干密度并降低了最佳含水量。在添加4％至8％的C'aO的情况下，直到养护360天为止，孔隙的大小一直保持下降，而在添加2％CaO的情况下，其孔隙在120天时停止下降，并且在1天时未检测到进一步的孔隙si / e变化。固化28天后添加的CaO的％。添加CaO后，处理后土壤的水力传导率从约10〜（-9）ms〜（-1）增加到10〜（-7）ms〜（-1），但随后又下降到10〜（数量级）。在进行渗透性测试的几天中为-9）ms〜（-1）。在pH高于1 1.7时，发生火山灰反应，并且由于新的矿物相（尤其是水合铝酸钙）而改变了土壤孔隙。

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