scholarly journals Optimization of Ionic Soil Stabilizer Dilution and Understanding the Mechanism in Red Clay Treatment

2021 ◽  
Vol 2021 ◽  
pp. 1-12
Author(s):  
Xuesong Lu ◽  
Jin Luo ◽  
Meinan Wan
Keyword(s):  
Experimental Tests ◽  
Uniaxial Pressure ◽  
Water Mixture ◽  
Red Clay ◽  
Soil Particles ◽  
Soil Stabilizer ◽  
Pressure Test ◽  
Clay Layers ◽  
Potential Test ◽  
Clay Treatment

Due to the insufficient understanding of the mechanism for soil strengthening by using Ionic Soil Stabilizer (ISS), the application of ISS in soil treatment is limited. In this paper, red clay samples were treated by using ISS and the effects were examined by the Atterberg test and uniaxial pressure test. In order to understand the mechanism, ISS dilution-based seepage test and ξ-potential test have been carried out. The results show that the ISS-Water mixture of 1 : 200 was the most effective ratio to reduce the plasticity index. The measurements indicate the thickness of the pair-electricity layer of adjacent clay layers and the repulsion force among soil particles is reduced, which in turn enhances the attraction force of the clay layers. This process strengthens the connection among the soil particles and thus increases the strength of the soil as detected by the experimental tests.

Study on Ionic Soil Stabilizer Reinforcing Red Clay of Wuhan

2011 ◽  
Vol 261-263 ◽  
pp. 1129-1133
Author(s):  
Xue Song Lu ◽  
Wei Xiang
Keyword(s):  
Compressive Strength ◽  
Unconfined Compressive Strength ◽  
Focal Point ◽  
Linear Shrinkage ◽  
Development Economic ◽  
Red Clay ◽  
Soil Particles ◽  
Soil Stabilizer ◽  
Compressive Strength Test ◽  
Free Swell

With fast research and development, economic and effectual materials have been the focal point of all over the world all the time. This experiment studies and uses a new kind of economic and suitable Ionic Soil Stabilizer (ISS for short). Based on the red clay of Wuhan reinforced by Ionic Soil Stabilizer, the red clay is treated by different matches of ISS and water at first, then is tested in the unconfined compressive strength test, shrinkage test, free swell test, and spectrum test. The results show that unconfined compressive strength increases, and the linear shrinkage, shrinkage limit and free swell decrease after mixing the ISS into the red clay. In addition, spectrum tests show that after the red clay is treated by ISS, soil particles on the surface of the C elements had changed markedly, from scratch, confirmed the ISS elements combined with the role of soil particles.

Experimental Study on Dynamic Characteristics of Ionic Soil Stabilizer Reinforcing Red Clay

2011 ◽  
Vol 374-377 ◽  
pp. 1391-1395
Author(s):  
Xue Song Lu ◽  
Wei Xiang
Keyword(s):  
Shear Modulus ◽  
Shear Strain ◽  
Dynamic Condition ◽  
Damping Ratio ◽  
Confining Pressure ◽  
Natural Soil ◽  
Dynamic Shear Modulus ◽  
Dynamic Shear ◽  
Red Clay ◽  
Soil Stabilizer

Based on the red clay of Wuhan reinforced by Ionic Soil Stabilizer, the red clay soil is treated by different matches of ISS at first, then is tested in the Atterberg limits test and dynamic triaxia test. The results show that the plastic index decreases, and the red clay were greatly improved under the dynamic condition, the maximum dynamic shear modulus ratio acquired an incensement of 27.72% on average after mixing the ISS into the red clay. In addition, It was concluded that the confining pressure influenced the dynamic shear modulus and damping ratio to a certain extent. Given the same strain conditions, with the incensement of confining pressure increases, the dynamic shear modulus increased and the damping ratio decreased. Moreover, when plotting the dynamic shear modulus versus the dynamic shear strain, the similar curve can be formed for both the natural soil and the modified one, the dynamic shear modulus monotonously decreased with the incensement of the dynamic shear strain. However, the value of dynamic shear modulus differed in the same shear strain between the natural soil and the soil modified by ISS.

scholarly journals Study on the Stabilization Mechanisms of Clayey Slope Surfaces Treated by Spraying with a New Soil Additive

2019 ◽  
Vol 9 (6) ◽  
pp. 1245 ◽  
Author(s):  
Cuiying Zhou ◽  
Shanshan Zhao ◽  
Wei Huang ◽  
Dexian Li ◽  
Zhen Liu
Keyword(s):  
Organic Polymer ◽  
Molecular Volume ◽  
Water Stability ◽  
Infiltration Depth ◽  
Infiltration Process ◽  
Soil Particles ◽  
Soil Stabilizer ◽  
Polymer Stabilizer ◽  
Infiltration Tests ◽  
Clayey Slope

The topsoil of a clayey slope is easily washed off by rain due to its loose structure. To protect the slope surface, in recent years, several types of non-traditional soil additives have been used by means of mixing with soil. In this work, a new organic polymer soil stabilizer, named aqua-dispersing-nano-binder (ADNB), was sprayed on the soil surface to stabilize the topsoil of a clayey slope. To understand the interaction between the polymer and soil particles during the infiltration process as well as the stabilization mechanism, infiltration tests, water stability tests and scanning electron microscopy (SEM) analyses were performed with different polymer contents. The infiltration tests showed that the infiltration rate of the polymer stabilizer in the soil was slower than that of water due to its characteristics of easy adhesion to soil particles, poor fluidity and large molecular volume. The maximum effective infiltration depth was achieved in the specimen treated with 2% ADNB, and the minimum was achieved in the specimen treated with 5% ADNB. The water stability of the soil increased with the content of the soil stabilizer in the soil aggregates with diameters of either 5–10 mm or 10–20 mm. The SEM analysis showed that the quantity of polymer decreased with infiltration depth; a polymer membrane was formed on the surface of the topsoil and chains were formed inside. The amelioration of the soil water stability may have been due to the bonding between soil particles and polymers generated after evaporation of water in the emulsion. The polymer stabilizer could be applied to improve the erosion resistance of the slope topsoil and reduce soil loss.

Sandy land structural consolidation engineering drive modern agricultural development in China’s Mu Us Sandy Land

2020 ◽  
Author(s):  
Yongsheng Wang ◽  
Wenhao Wu ◽  
Yuheng Li
Keyword(s):  
Root Biomass ◽  
Agricultural Development ◽  
Crop Yields ◽  
Volume Ratio ◽  
Sustainable Utilization ◽  
Sandy Land ◽  
Red Clay ◽  
Engineering Costs ◽  
Sand Land ◽  
Clay Treatment

<p>Sandification has become a major obstacle to China’s regional farmland protection, economic development and ecological civilization construction. Sandy land consolidation technologies and sustainable utilization modes will provide farmland for modern agricultural development. We introduced structural consolidation theory to sandy land rehabilitation from the aspects of soil body building, soil layer reconstruction and soil quality improvement. Filed experiments were conducted in Mu Us Sand Land to explore the effects of dry mixtures of guest material (red clay and loess) and sand at four volume ratios (1:1, 1:2, 1:3 and 1:5) on crop yield, soil properties and maize root growth. Red clay treatments had higher sandy land structural consolidation engineering costs and crop yields than loess treatments. Red clay and loess had significant promotion of maize and soybean yields at volume ratios of 1:3. The maximum potato yield is 42501 kg ha<sup>-1</sup> and 37332 kg ha<sup>-1</sup> in red clay treatment at volume ratio of 1:5 and in loess treatment at volume ratio of 1:5, respectively. Red clay and loess significantly increased clay and silt ratio and regulated the soil total nitrogen concentration and soil organic matter content during the critical growth stage of maize. Lowest root biomass in surface soil and lowest surface/subsoil root biomass ratio mediated maize growth in red clay treatment at volume ratio of 1:3. Red clay can be used to consolidate sandy land and develop modern agriculture in the long-term according to the engineering costs and crop yields. Enhanced land productivity, increased land transfer rent and extra wage income provide a stainable and stable increase in households’ income for escaping from poverty. Spatial overlap between red clay with sandy land makes red clay as a new available material for sand land consolidation and utilization from China to global scale. China’s sandy land structural consolidation engineering and sustainable utilization practices will contribute prescriptions to global desertification fighting and rural poverty alleviation. Regional water resource carrying capacity evaluation should be emphasized before sandy land structural consolidation engineering popularization.</p>

Experimental Study On The Mechanism Of Action Of Ionic Soil Stabilizer On Red Clay Of Wuhan

2010 ◽  
pp. 781-785
Author(s):  
Wei Xiang ◽  
De-Shan Cui ◽  
Fei Ai
Keyword(s):  
Experimental Study ◽  
Mechanism Of Action ◽  
Red Clay ◽  
Soil Stabilizer

Late Maastrichtian and K/T paleoenvironment of the eastern Tethys (Israel): mineralogy, trace and platinum group elements, biostratigraphy and faunal turnovers

2005 ◽  
Vol 176 (1) ◽  
pp. 37-55 ◽  
Author(s):  
Thierry Adatte ◽  
Gerta Keller ◽  
Doris Stüben ◽  
Markus Harting ◽  
Utz Kramar ◽  
...  
Keyword(s):  
Trace Elements ◽  
High Stress ◽  
Bulk Rock ◽  
Red Clay ◽  
Planktic Foraminifera ◽  
Volcanic Origin ◽  
Arc Volcanism ◽  
Arid Conditions ◽  
Biotic Effects ◽  
Clay Layers

Abstract The late Maastrichtian to early Danian at Mishor Rotem, Israel, was examined based on geochemistry, bulk rock and clay mineralogies, biostratigraphy and lithology. This section contains four red clay layers of suspect impact or volcanic origin interbedded in chalk and marly chalks. PGE anomalies indicate that only the K/T boundary red layer has an Ir dominated PGE anomaly indicative of an impact source. The late Maastrichtian red clays have Pd dominated PGE anomalies which coincide with increased trace elements of terrigenous and volcanogenic origins. Deccan or Syrian-Turkey arc volcanism is the likely source of volcanism in these clay layers. Glauconite, goethite and translucent amber spherules are present in the clay layers, but the Si-rich spherules reported by Rosenfeld et al. [l989] could not be confirmed. The absence of Cheto smectite indicates that no altered impact glass has been present. The red layers represent condensed sedimentation on topographic highs during sea level highstands. In the Negev area, during the late Maastrichtian, the climate ranged from seasonally wet to more arid conditions during zones CF3 and CF2, with more humid wet conditions in the latest Maastrichtian zone CF1 and in the early Danian, probably linked to greenhouse conditions. Planktic foraminifera experienced relatively high stress conditions during this time as indicated by the low species richness and low abundance of globotruncanids. Times of intensified stress are indicated by the disaster opportunist Guembelitria blooms, which can be correlated to central Egypt and also to Indian Ocean localities associated with mantle plume volcanism. Marine plankton thus support the mineralogical and geochemical observations of volcanic influx and reveal the detrimental biotic effects of intense volcanism.

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