scholarly journals Comparison of Rowe cell and oedometer test to determine peat soil consolidation parameters

2020 ◽  
Vol 830 ◽  
pp. 022053
Author(s):  
M Yuswandono ◽  
A K Somantri ◽  
R Rabiya
Keyword(s):  
Peat Soil ◽  
Soil Consolidation ◽  
Oedometer Test ◽  
Consolidation Parameters ◽  
Rowe Cell

scholarly journals Perbandingan Pengujian Konsolidasi Menggunakan Alat Rowe Cell dan Oedometer pada Tanah Lanau Lunak

2020 ◽  
Vol 22 (2) ◽  
pp. 149-155
Author(s):  
Iskandar ◽  
Rabiya
Keyword(s):  
Pore Water Pressure ◽  
Water Pressure ◽  
Soft Soil ◽  
Soil Samples ◽  
Soil Parameters ◽  
Soil Consolidation ◽  
Test Results ◽  
Soft Soils ◽  
Better Than ◽  
Rowe Cell

Soil consolidation testing using an oedometer and rowe cell. Oedometers are often used on clay and soft soils. However, in the development of the rowe cell device, the results of lowering soft soil were better than the oedometer. The advantage of this rowe cell is that it can determine the saturation value of the soil samples tested. The rowe cell tester can measure the pore water pressure at the beginning and end of each consolidation stage. This rowe cell can provide suitable settlement for soft soils. This consolidation test to obtain soil parameters such as Cv and Cc by using the rowe cell tool. After that, from the test results, the two tools were compared.

scholarly journals Consolidation Parameters of Reconstituted Peat Soil: Oedometer Testing

2015 ◽  
Vol 773-774 ◽  
pp. 1466-1470
Author(s):  
Nurul N. Johari ◽  
I. Bakar ◽  
M.H.A. Aziz
Keyword(s):  
Soil Profile ◽  
Peat Soil ◽  
Particle Sizes ◽  
Compression Index ◽  
Peat Soils ◽  
Load Increment ◽  
One Dimensional ◽  
Swell Index ◽  
Undisturbed Samples ◽  
Consolidation Parameters

This paper presents the consolidation parameters of reconstituted peat soils with different peat soil particle sizes. The reconstituted peat sample was used to determine the consolidation parameters since the undisturbed samples were difficult to collect. The selected sizes of soil particles passing have been collected and formed the reconstituted peat samples by preloaded a pressure to remove the extra water. The testing involve was one-dimensional oedometer consolidation test with the load increment method (5 – 320kPa). It is important to gather the information about a soil profile, especially on consolidation properties which were important in predicting the settlement of soil. Based on the results, compression index (Cc) and swell index (Cs), the values were increased with the increasing peat particles size.

scholarly journals A COMPREHENSIVE METHOD FOR DETERMINING THE ENGINEERING CALCULATION PARAMETERS FOR THE CONSOLIDATION OF WATER-SATURATED VISCOUS SOILS

2018 ◽  
Vol 13 (4-5) ◽  
pp. 64-72 ◽  
Author(s):  
S. G. Bezvolev
Keyword(s):  
Compressibility Factor ◽  
Engineering Calculation ◽  
Theoretical Expression ◽  
Soil Consolidation ◽  
Method Of Calculation ◽  
Consolidation Coefficient ◽  
Definition Of ◽  
Filtration Stage ◽  
Water Saturated ◽  
Consolidation Parameters

The introductory part of the article describes varieties of water-saturated soils that have a significant viscous and filtration resistance to volumetric deformation. The engineering method of calculation developed for solving such problems was briefly described, its practical limitations and scope were noted. The main part of the article describes a combined methodology for the adequate definition of consolidation parameters of water-saturated viscous soils, according to the laboratory test by working load, by separating the stages of primary (filtration) and secondary (creeping) soil consolidation and matching their experimental plots with theoretical dependencies. An analysis of the method of calculating the soil filtration coefficient, which is often used in practice, is performed using the well-known theoretical expression of Terzagi in terms of the values of the consolidation and compressibility coefficients. This method can not be considered correct, because the compressibility factor is an indicator of the stabilized compression deformation, including its viscoplastic part, while in the Terzaghi formula, the magnitude of the consolidation coefficient corresponds solely to elastic-instantaneous deformations, characteristic only for the initial filtration stage. An example of the determination of the consolidation parameters of a water-saturated layer of fluid loam is considered when designing a pre-built erosion foundation for the construction of a residential micro-district in the marshy area. The methods of selection and testing of samples with an unstrained natural structure are described. The results of calculating the development over time of sediments of the natural layer of loam on the basis of the consolidation parameters obtained are given. In conclusion, it is noted that the developed methodology for determining parameters creates the backgrounds for the introduction in the project practice of effective methods of consolidation calculations that allow for the comprehensive consideration of conditions that affect the choice of rational type and design solutions of foundations.

scholarly journals COMPRESSIBLITY OF PEAT SOIL IMPROVED WITH POLYURETHANE

2019 ◽  
Vol 31 (1) ◽  
Author(s):  
Ismacahyadi Bagus Mohamed Jais ◽  
Diana Che Lat ◽  
Tengku Nur Dalila Tengku Endut
Keyword(s):  
Polyurethane Foam ◽  
Peat Soil ◽  
Optimum Ratio ◽  
Overburden Pressure ◽  
Lightweight Material ◽  
Oedometer Test ◽  
Pu Foam ◽  
Foam Stabilization ◽  
Underlying Soil ◽  
Very High

This research investigated the compressibility of natural peat soil and peat soil improved with polyurethane foam. High natural moisture content, high compressibility, low bearing capacity and medium to low permeability is a problem and characteristic of a peat soil. This problem can be solved by reducing the compressibility of the peat soil. The objective of this study is mainly to prove whether the presence of polyurethane foam as a lightweight material on peat soil can reduce the compressibility of peat soil or otherwise. Fifteen samples of peat soil taken from Johan Setia, Klang were tested using Oedometer test with load is doubled at each increment until it reaches the maximum required load which is 10kPa, 20kPa, 40kPa, 80kPa, 160kPa, 320kPa and 640kPa. Polyurethane foam is a lightweight material, therefore reduces the overburden pressure to the underlying soil, hence future settlement can be minimized to a tolerable settlement value. Based on the data obtained from analysis of Oedometer test, the compressibility parameters including void ratio, compression index and swelling index of the peat soil alone are very high which denoted extremely poor condition of the peat soil. The compressibility parameters improved significantly with the PU foam stabilization as PU act as a void filler for peat soil. A slight increase in the compressibility parameters are recorded with higher ratio of isocyanate.  However, the maximum pre-consolidation pressure recorded was with PU ratio of 1:1. Therefore, the optimum ratio for PU peat stabilization is in the ratio of 1:1.

scholarly journals Soil Consolidation Parameters Derived from CPTu Probing

2016 ◽  
Vol 161 ◽  
pp. 180-184 ◽  
Author(s):  
Jozef Vlcek ◽  
Roman Bulko ◽  
Ladislav Bartuška ◽  
Ján Kmec
Keyword(s):  
Soil Consolidation ◽  
Consolidation Parameters

Modes of agricultural use, productivity and fertility of developed lowland peat soils

2020 ◽  
Author(s):  
Aleksandr Glubokovskih
Keyword(s):  
Crop Rotation ◽  
Peat Soil ◽  
Perennial Grasses ◽  
Peat Soils ◽  
Fodder Crop ◽  
Agrochemical Properties ◽  
Agricultural Use ◽  
Fodder Crop Rotation

The results of many years of research on the cultivation of crops in fodder crop rotation on dried peat soil are presented. A productive and agroecological assessment of crop rotation with various saturation with perennial grasses is given. The data on the reduction of peat reserves and changes in the agrochemical properties of the soil are presented.

The Occurrence of Carbazole in a Peat Soil

1967 ◽  
Vol 31 (3) ◽  
pp. 435-436 ◽  
Author(s):  
O. C. Braids ◽  
F. L. Himes ◽  
G. W. Volk
Keyword(s):  
Peat Soil

PROPERTIES IMPROVEMENT AND HYDROPHOBICITY PREVENTION OF PEAT SOIL IN OIL PALM PLANTATION THROUGH STEEL SLAG APPLICATION

2016 ◽  
Vol 24 (1) ◽  
pp. 39-46
Author(s):  
Winarna Winarna ◽  
Iput Pradiko ◽  
Muhdan Syarovy ◽  
Fandi Hidayat
Keyword(s):  
Soil Ph ◽  
Oil Palm ◽  
Water Retention ◽  
Peat Soil ◽  
Steel Slag ◽  
Field Capacity ◽  
Ash Content ◽  
Oil Palm Plantation ◽  
Randomized Design ◽  
Four Levels

Development of oil palm plantation on peatland was faced with hydrophobicity problem caused by over drained. Hydrophobicity could reduce water retention and nutrient availability in the peat soil. Beside of proper water management application, addition of soil ameliorant which contain iron could increase stability and improve peat soil fertility. The study was conducted to obtain the effect of steel slag on peat soil properties and hydrophobicity. In this study, peat soil was incorporated with steel slag and incubated in 60 days period. The research was employed completely randomized design (CRD) factorial 2 x 2 x 4. First factor is peat maturity consists of two levels: sapric (S) and hemic (H), while the second factor is soil moisture which also consist of two levels: field capacity (W1) and dry (under the critical water content) (W2). The third factor is steel slag dosage which consist of four levels: 0 g pot (TB0), 7.17 g pot (TB1), 14.81 g -1 -1 pot (TB2), and 22.44 g pot (TB3). The result showed that application of steel slag significantly increase of soil pH, ash content, and water retention at pF 4.2. Furthermore, application of steel slag significantly reduce time for water reabsorption (wettability) in sapric. On the other hand, there are negative corellation between water penetration and soil pH, ash content, and water retention at pF 4.2. Overall, application of steel slag could increase wettability and prevent peat soil hydrophobicity.

Sign in / Sign up

Export Citation Format

Share Document