##tihuan2##Similar proportions of fly-ash (2%, 4%, 6% and 8% of total soil mass) were mixed with cement (4% of total soil mass) to analyse the comparative effects of ESP-lime and fly-ash-cement on the soil ...
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##tihuan2##Gypsum does NOT improve the structure of other types of clay, which accounts for most of the clay soil in North America. Gypsum Improves Drainage. For the reason just discussed, gypsum will improve drainage on sodic soil, but it does nothing to help drainage on non-sodic soil. Gypsum Increases pH. This is a very common myth …
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##tihuan2##Improvement of CBR of gypsum subgrade soil by cement kiln dust and granulated blast-furnace slag Asaad Mohammed Baqir Al-Gharrawi Tawfek Sheer Ali A. K. Alzerjawi M. K. Fakhraldin H. A. Abdul-Husain Environmental Science, Engineering
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##tihuan2##This study aimed to examine flue gas desulfurization (FGD) gypsum, a by-product of coal power plants, for use in soil–cement stabilization, specifically for ability to strengthen poor high-clay, lateritic …
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##tihuan2##In other words, substituting Portland cement with 25% gypsum can result in the lower amount of strength after four weeks of curing under both low and high temperature. This can significantly reduce the cost of the soil improvement operations since gypsum is more cheaply available than Portland cement.
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##tihuan2##Keywords: soil improvement, cement kiln dust, GGBS, CBR improvement 1 Introduction The gypsum soil covers nearly 32% of Iraq [1]. Many struc-tures are constructed on this soil subjected to the total or differential settlement, mainly when the water attacks these sites. This article studies the effect of adding cement
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##tihuan2##Gypsum for Soil: A Gardener's Best Friend. Gypsum, or calcium sulfate, is a natural mineral that has been used in agriculture for centuries. Unlike lime, which alters soil pH, gypsum is one of the nutrient-specific amendments that maintains the pH balance while providing essential calcium and sulfur to the soil. These nutrients improve soil …
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##tihuan2##Most construction projects face the problem of a high percentage of gypsum in the soil. To get rid of the unwanted effects of gypsum, which lead to the dissolution of gypsum in the presence of water and the settlement of the foundations of buildings and subsoil of roads, the researchers used several materials that can be added to the soil to improve its …
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##tihuan2##The use of cement as a soil stabilization agent is one of the common solutions to enhancing the engineering properties of soil.
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##tihuan2##A cement-modified soil (CMS) is a soil material that has been treated with a relatively small proportion of Portland cement – less cement than is required to produce hardened soil- cement. The …
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##tihuan2##The collapse of the gypsum soil decreased by 55.91%, 83.3%, and 92% for soil treated by cement, while it decreased by 47.1%, 76.82%, and 90% for soil treated with lime when the soil treated by 4%, 8% and 12% of additive, respectively. The direct shear tests showed a significant increase in the cohesion of gypsum soil after adding cement.
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##tihuan2##Gypsum has been used as a conditioner in agriculture, it makes soil workable. In this paper gypsum hemihydrate (POP) (Ca2So4.1.5H2O) has been taken as a stabilizer to improve the property of swelling and cement to improve the strength of the soil and improve the durability of gypsum hemihydrate in wet environment.
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##tihuan2##A soil–cement–FGD gypsum mixture is proposed in this study and is compared to the traditional soil–cement process (Figure 4). Figure 4. Traditional soil–cement process and the soil ...
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##tihuan2##In order to improve the engineering properties of organic soil, a new stabilization agent is developed by the addition of phosphor gypsum and calcium aluminate cement. The artificial organic soil ...
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##tihuan2##The original soil was classified as moderately sensitive soil because the sensitivity value of the original soil was 2. After being stabilized with various mixtures of cement, gypsum, and limestone, soil stabilization using cement obtained the maximum unconfined compressive strength value is 3.681 kg/cm 2 in the mixture of 10%.
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##tihuan2##This paper is a tamped to improve the engineering properties of gypseous soil by adding novolac polymer. The soil samples brought from the west of Karbala city with 36% of gypsum content.
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##tihuan2##Additionally, samples were characterized using scanning electron microscopy with energy dispersive X-ray spectroscopy (SEM-EDS) and mercury intrusion porosimetry (MIP) to elucidate the micro-level changes occurring in the stabilized soil and explain the reaction mechanism of TGC (Titanium-Gypsum-Cement) soil interaction.
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##tihuan2##Soil improvement for road construction can be achieved by using techniques such as preloading, soil replacement, using recycled concrete aggregates, and using soil stabilizing agents [16,17,18,19,20].The most popular technique is the use of ordinary Portland cement (OPC) as a stabilizing agent, leading to the technique of "soil–cement …
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##tihuan2##This paper is a tamped to improve the engineering properties of gypseous soil by adding novolac polymer. The soil samples brought from the west of Karbala city with 36% of gypsum content.
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##tihuan2##The compounds used to improve gypsum soil with changes in the percentages of GGBS, lime, and fly ash are trying to achieve the most suitable mixture of additives as well as the optimal moisture content and maximum dry density for each compound (Table 1). 8.4. Unconfined compressive strength (UCS) characteristics
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##tihuan2##Gypsum Makes Water-Soluble Polymer Soil Conditioners More Effective. Gypsum complements or even magnifies the beneficial effects of water-soluble polymers used as amendments to improve soil structure (Wallace and Nelson 1986). Like for organic matter, calcium, which comes from gypsum, is the mechanism for binding of the water-soluble …
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##tihuan2##The following conclusions are drawn: The ideal CKD ratio, which improves the CBR of gypsum sandy soil in a dry state is 5%. In a soaked state, the CBR of gypsum sandy soil improves optimally when it is mixed with a …
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##tihuan2##When gypsum is used with cement and lime, the cement + gypsum (HH) stabilized soil strength is higher than that of lime + gypsum stabilized soil (Mohammadi …
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##tihuan2##Improvement of saline soil and acid soil: It was recommended to utilize industrial by-product gypsum to adjust the pH of acidic or alkaline soil. With increasing gypsum content, the pH of alkaline soil decreased while the pH of acidic soil increased. Notably, PG showed the most significant improvement effect.
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##tihuan2##Subramanian, et al. 16 reported that substituting 30% of CSA cement with gypsum led to a substantial increase in the early strength of sand, with a continuous improvement in strength when used for ...
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##tihuan2##The effect of gypsum on the improvement of the soil depends on numerous factors, curing period being particularly important. Appropriate curing time for optimum improvement was determined by obtaining the swell percent variation with cure time up to 2 months using the considered maximum gypsum content (10% by mass) for the …
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##tihuan2##Quite a few attempts have been made on the efficient reuse of gypsum-based wastes or by-products to reduce the carbon footprint of soil improvement (e.g. …
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##tihuan2##Quite a few attempts have been made on the efficient reuse of gypsum-based wastes or by-products to reduce the carbon footprint of soil improvement (e.g. phosphogypsum, flurogypsum, citrogypsum, desulphogypsum, borogypsum, and flue gas desulfurization (FGD) gypsum) to ameliorate problematic soils, such as loess (Zhao et …
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##tihuan2##Consequently, soil improvement techniques, especially soil–cement stabilization, have become the new method for overcoming the scarcity of standard materials by improving the essential properties of poor soil to the level needed for practical use in road construction. ... [63]; Liquid limit tests and plastic limit tests in accordance with ...
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