2020
DOI: 10.1016/j.apgeochem.2019.104494
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Stabilization of soils containing sulfates by using alternative hydraulic binders

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Cited by 34 publications
(24 citation statements)
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“…kg −1 , which is lower than 0.31 g kg −1 below 100 cm [18]. In the whole process of applying MDI, five kinds of ions' contents decreased year by year, and the distribution was more uniform in different soil layers (Figure 5e).…”
Section: Changes In Sar and Csermentioning
confidence: 86%
See 1 more Smart Citation
“…kg −1 , which is lower than 0.31 g kg −1 below 100 cm [18]. In the whole process of applying MDI, five kinds of ions' contents decreased year by year, and the distribution was more uniform in different soil layers (Figure 5e).…”
Section: Changes In Sar and Csermentioning
confidence: 86%
“…SO 4 2− content in the surface layer was 0.87-0.90 g kg −1 at 1 a, whereas the content below 80 cm was 0.42-0.59 g kg −1 (Figure 5d). The concentration of relatively active ion Cl − in the surface of soil in 1 a was 0.56-0.57 g kg −1 , which is lower than 0.31 g kg −1 below 100 cm [18]. In the whole process of applying MDI, five kinds of ions' contents decreased year by year, and the distribution was more uniform in different soil layers (Figure 5e).…”
Section: Spatiotemporal Migration Patterns Of Ionsmentioning
confidence: 92%
“…It can also be present in the water used to compact pavement layers, or can even come from the infiltration of water from the surrounding terrain. The reaction of the Ca 2+ ions supplied by the additive, aluminum from the clay minerals and the sulfate, with water availability, forms ettringite (Ca 6 Al 2 (SO 4 ) 3 (OH) 12 •26H 2 O), a highly hydrated and expansive mineral. The adequate conditions for the formation of ettringite are: 1. high pH, 2. availability of reactive aluminum, 3. availability of reactive calcium, 4. presence of sulfate and 5. water availability [4].…”
Section: Introductionmentioning
confidence: 99%
“…From an environmental point of view, the stabilization of sulfate soils could contribute to limiting the environmental impact of the construction industry by means of saving natural resources they could substitute. This way, different authors are currently researching this field: Diaz Caselles et al [12], stabilized a sulfate soil with different hydraulic binders based on calcium. They found that the most effective treatment was obtained with binders rich in GGBS.…”
Section: Introductionmentioning
confidence: 99%
“…Furthermore, it has been demonstrated that soil contains clay (>10 wt dry soil weight) and >1% sulphate content after stabilization with cement or lime [ 4 ]. Clay releases ammonia at pH values > 10.5 and this ammonia interacts with Ca 2+ (contained in lime or cement), soil sulphate ions, and available soil water to form calcium silicate trisulphate hydrate (ettringite) [ 11 , 14 , 15 , 16 ]. This ettringite can be converted to calcium-silicate-hydroxide-sulphate-carbonate-hydrated material (thaumasite) at temperatures < 15 °C [ 17 , 18 , 19 ].…”
Section: Introductionmentioning
confidence: 99%