Stabilization in Discrete Nonlinear Systems Using Lyapunov Exponent | Chapter 10 | Mathematics and Computer Science: Contemporary Developments Vol. 1

 

We deal with the stabilization problem of discrete nonlinear systems. We construct a control Lyapunov function on discrete nonlinear systems. Then, we present a new method to construct a continuous state feedback law.

Author(s) Details

Fengjun Tang
Nanhang Jincheng College, Nanjing University of Aeronautics and Astronautics, China.

Rong Yuan
Nanhang Jincheng College, Nanjing University of Aeronautics and Astronautics, China.

 

Please see the book here:- https://doi.org/10.9734/bpi/mcscd/v1/7126E

Stabilization of Expansive Soils with Lime and Fly Ash| Book Publisher International

 The expansive soils, popularly known as Black cotton soils in India are very problematic as they are poor material for foundation as well was construction.  Structures resting on expansive soils are subjected severe distress due to ground movement caused by the swelling and shrinkage of soils. Normally the types of foundations vary depending upon the availability of soil strata as well as cost involvement. Some times, it is essential to build a heavy structure over a weak soil, in such situation improvement of bearing capacity of soil by some suitable methods becomes necessary. The techniques generally adopted are stabilization and reinforcement of the soil.

The stabilization of soil by admixing some stabilizing agent has an effective ground improvement because of its easy adoptability and cost effectiveness.  If the admixing material is available in abundance at free of cost, it will reduce construction cost.

Mixing of lime is one of the methods to stabilize the expansive soils. With mixing of lime, the properties like swelling/shrinkage get reduced and some engineering properties are improved.

Fly ash, an industrial waste of thermal power plants has many geotechnical uses. The case study is on stabilization stabilization of expansive soils with lime and fly ash is presented.

The behavior of soil has been studied using different percentage of fly ash with the combination of lime. From the case study results it is found that engineering properties of expansive soil improves with the addition of lime and fly ash.  Swelling and shrinkage is effectively reduced.  With the addition of fly ash, the same results can be obtained at lower percentage of lime.

Author(s) Details:

Kamal Singh,

Department of Civil Engineering, Maulana Azad National Institute of Technology, Bhopal, India.

Please see the link here: https://stm.bookpi.org/SESLFA/article/view/11233

State-of-the-art Technology to Stabilize Heavy Metal in Municipal Solid Waste Incineration Fly Ash Using Natural Zeolite | Chapter 1 | Novel Perspectives of Geography, Environment and Earth Sciences Vol. 6

 Stabilizing difficult metals in Municipal Solid Waste Incineration (MSWI) fly ruins by using open zeolite is one of the state-of-the-skill technologies. The current study attracted on the sorption process of heavy metals by requesting mordenite, an inexpensive open zeolite adsorbent, and assessing the productiveness of the treatment of fly ruins. Batch experiments were conducted to review the effects of the powerful parameters, to a degree the initial ore ion concentration, the liquid-to-solid (L/S) percentage, the dosage of the adsorbent, and the evenness concentration of the mineral, on the immobilization of Pb2+ and Zn2+. Heavy metal counterweight efficiency increased accompanying increasing the portion of drug or other consumable of mordenite, influenced for one media-distinguishing surface area. Heavy metal adsorption is from various adsorption processes and ion exchange mechanisms. The Langmuir and Freundlich isotherm models were examined using the adsorption dossier. The adsorption process is better in the Freundlich isotherm model with a extreme determination cooperative (R2), especially for the adsorption of Pb2+. The effects raise hopes for the use of mordenite as a low-cost substance to treat MSWI flee ash. The verdicts indicate that harmonized (Pb2+ and Zn2+) immobilization by mordenite is technically doable and seems expected very effective. Furthermore, treated flee ash can be secondhand as a construction material.

Author(s) Details:

Mitali Nag,
Department of Urban and Environmental Engineering, Faculty of Engineering, Kyushu University, Fukuoka, Japan.

Amirhomayoun Saffarzadeh,
Department of Urban and Environmental Engineering, Faculty of Engineering, Kyushu University, Fukuoka, Japan.

Takayuki Shimaoka,
Department of Urban and Environmental Engineering, Faculty of Engineering, Kyushu University, Fukuoka, Japan.

Please see the link here: https://stm.bookpi.org/NPGEES-V6/article/view/10098

Research on Utilization of Waste Materials in Soil Stabilization | Chapter 11 | Emerging Trends in Engineering Research and Technology Vol. 3

Soil strength plays a vital role in the construction field. The main purpose of this project is to stabilize red soil with the help of various waste materials. The waste materials used are rice husk ash, lime, ground granulated blast furnace slag and coconut coir fiber. These waste materials have been mixed with the soil in the ratio 10%, 20% and 30% and subjected to various tests Specific Gravity Test, Sieve Analysis Test, Plasticity Index Test, Standard Proctor Test, Unconfined Compression test and California Bearing ratio test. A comparative increase in soil strength was found with all the waste materials. Thus, ultimately the soil is stabilized with the help of these waste materials.

Author(s) Details

Mr. R. Sanjay Kumar
Department of Civil Engineering, Aarupadai Veedu Institute of Technology, Vinayaka Missions Research Foundation (VMRF), Paiyanoor, India.

Dr. D. S. Vijayan
Department of Civil Engineering, Aarupadai Veedu Institute of Technology, Vinayaka Missions Research Foundation (VMRF), Paiyanoor, India.

C. Nivetha
Department of Civil Engineering, Aarupadai Veedu Institute of Technology, Vinayaka Missions Research Foundation (VMRF), Paiyanoor, India.

D. Parthiban
Department of Civil Engineering, Aarupadai Veedu Institute of Technology, Vinayaka Missions Research Foundation (VMRF), Paiyanoor, India.

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