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Initial Investigation of Soil Stabilization with Calcined Dolomite-GGBS Blends

机译：煅烧白云石-GGBS共混物对土壤稳定作用的初步研究

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Lime-ground granulated blast-furnace slag (GGBS) blends have been widely used in soil stabilization applications. More recently, reactive MgO-GGBS blends were shown to outperform lime-GGBS blends in terms of various engineering properties of the stabilized soils. Although the use of MgO or CaO in blends has been investigated, their combined use with GGBS has not. This paper considers the calcined dolomite as a source of MgO-CaO combination and investigates the use of calcined natural dolomite-GGBS blends in the stabilization of a clayey soil and a clayey silty sand. The influence of the calcination temperature, soil type, dosages of binder and curing period on the properties of the stabilized soils were studied by unconfined compressive strength (UCS), elastic stiffness (E_(50)), XRD analysis and SEM. This initial work revealed that calcined dolomite-GGBS blends are practical and are an effective option for soil stabilization.
机译：石灰磨碎的高炉矿渣（GGBS）混合物已广泛用于土壤稳定化应用。最近，在稳定土壤的各种工程性能方面，反应性MgO-GGBS共混物的性能优于石灰-GGBS共混物。尽管已经研究了在混合物中使用MgO或CaO，但尚未将其与GGBS一起使用。本文将煅烧的白云石视为MgO-CaO组合的来源，并研究了煅烧的天然白云石-GGBS混合物在黏土和黏土粉质砂土中的稳定作用。通过无侧限抗压强度（UCS），弹性刚度（E_（50）），XRD分析和SEM研究了煅烧温度，土壤类型，粘结剂用量和固化时间对稳定土性能的影响。这项初步工作表明，煅烧白云石-GGBS共混物是切实可行的，并且是土壤稳定的有效选择。

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