Comparisons of Vibrated Density and Standard Compaction Tests on Sands with Varying Amounts of Fines

2009 ◽  
pp. 348-348-16 ◽  
Author(s):  
FC Townsend
Keyword(s):  
Standard Compaction

Evaluation and Utilization of Kuantan Clayey as Material Embankment for Roadway

2014 ◽  
Vol 587-589 ◽  
pp. 1328-1331
Author(s):  
Achmad Fauzi ◽  
Zuraidah Djauhari ◽  
Usama Juniansyah Fauzi
Keyword(s):  
Clayey Soil ◽  
Linear Regression Analysis ◽  
Expansive Soil ◽  
Engineering Properties ◽  
X Ray ◽  
The Road ◽  
Optimum Water Content ◽  
Cbr Test ◽  
Optimum Water ◽  
Standard Compaction

In general, clayey soil was used as material embankment for increasing road way level before road structure being constructed. Some types of clay are expansive soil, its have been contributing to pavement failures and subsequently causing increased annual maintenance expenditure of the road. The pavements design/redesign methods are found to be the primary cause of these failures. Thus, it is quite important to propose the Kuantan clay engineering properties chart for design criteria that can improve the embankment performance. Thus, it is quite important to investigate the Kuantan clay properties so that can improve the embankment performance. This paper was evaluated and utilized of the engineering properties of Kuantan Clayey as material embankment for roadway. The research were conducted soil engineering properties, standard compaction, four days soaked California Bearing Ratio (CBR) test to ten clayey samples from various sites in Kuantan. The 4 days soaked CBR of clayey samples were prepared at optimum water content. The chemical element was investigated by Integrated Electron Microscope and Energy-Dispersive X-Ray Spectroscopy (SEM-EDS) and linear regression analysis were used to anlyzing relation among engineering properties variables.

scholarly journals Modelling the Effects of Nanomaterial Addition on the Permeability of the Compacted Clay Soil Using Machine Learning-Based Flow Resistance Analysis

2021 ◽  
Vol 12 (1) ◽  
pp. 186
Author(s):  
Mehmet Şükrü Özçoban ◽  
Muhammed Erdem Isenkul ◽  
Selçuk Sevgen ◽  
Seren Acarer ◽  
Mertol Tüfekci
Keyword(s):  
Flow Resistance ◽  
Clay Soil ◽  
Oxygen Demand ◽  
Support Vector ◽  
Compacted Clay ◽  
Svm Model ◽  
Highly Correlated ◽  
Kjeldahl Nitrogen ◽  
Soil Changes ◽  
Standard Compaction

Impermeable base layers that are made of materials with low permeability, such as clay soil, are necessary to prevent leachate in landfills from harming the environment. However, over time, the permeability of the clay soil changes. Therefore, to reduce and minimize the risk, the permeability-related characteristics of the base layers must be improved. Thus, this study aims to serve this purpose by experimentally investigating the effects of nanomaterial addition (aluminum oxide, iron oxide) into kaolin samples. The obtained samples are prepared by applying standard compaction, and the permeability of the soil sample is experimentally investigated by passing leachate from the reactors, in which these samples are placed. Therefore, Flow Resistance (FR) analysis is conducted and the obtained results show that the Al additives are more successful than the Fe additive in reducing leachate permeability. Besides, the concentration values of some polluting parameters (Chemical Oxygen Demand (COD), Total Kjeldahl Nitrogen (TKN), and Total Phosphorus (TP)) at the inlet and outlet of the reactors are analyzed. Three different models (Artificial Neural Networks (ANN), Multiple Linear Regression (MLR), Support Vector Machine (SVM)) are applied to the data obtained from the experimental study. The results have shown that polluting parameters produce high FR regression similarity rates (>75%), TKN, TP, and COD features are highly correlated with the FR value (>60%) and the most successful method is found to be the SVM model.

scholarly journals Pengaruh Penambahan Serat Rami pada Tanah Terjun-Medan dengan Pengujian Standard Compaction, Triaxial Unconsolidated Undrained, dan Prediksi Balik dengan Plaxis 2D

2021 ◽  
Vol 2 (4) ◽  
pp. 626-644
Author(s):  
Handi Utama Thomas ◽  
Roesyanto Roesyanto ◽  
Rudi Iskandar
Keyword(s):  
Compaction Test ◽  
Soil Model ◽  
Standard Compaction

Tanah mempunyai peranan yang penting dalam konstruksi. Daya dukung tanah wajib mampu menahan beban struktur di atasnya. Problematika tanah lunak yang sering dijumpai seperti kerusakan jalan perkerasan lentur maupun kaku, kelongsoran timbunan, kelongsoran lereng, dan penurunan tanah yang menyebabkan kerusakan struktur. Diperlukan inovasi yang ramah lingkungan dalam penanganan tanah lunak tersebut secara in-situ disamping dengan pertimbangan dari segi ekonomis, waktu, dan ketersediaan material. Penelitian bertujuan untuk mengetahui pengaruh penambahan serat rami pada tanah terhadap kekuatan geser dan kepadatan kering maksimum tanah. Penelitian ini menggunakan serat rami yang dicampurkan secara acak dengan tanah dengan kadar rami sebesar 1%, 2%, 3%, 4% dan 5% dari berat tanah kemudian dilakukan compaction test dan Triaxial UU. Pengujian Triaxial UU dilakukan untuk tanah dengan kandungan serat maksimum. Hasil penelitian ini yaitu kepadatan kering maksimum (ℽdmax) tanah mengalami penurunan seiring dengan penambahan serat rami dimana ℽdmax tertinggi sebesar 1,595 g/cm3 sedangkan ℽdmax terendah sebesar 1,438 g/cm3. Penambahan serat rami sebesar 5% menghasilkan peningkatan pada nilai kekuatan geser (cu) hasil pengujian Triaxial UU sebesar 477,1% dari 1,05 kg/cm2 menjadi 5,01 kg/cm2. Hasil pemodelan Triaxial UU dengan pemodelan harderning soil model pada program Plaxis 2D cukup mendekati dengan hasil pengujian laboratorim dengan hasil tegangan deviatorik yang relatif sama.

Application of Vibration Test Methods in Cement-Treated Aggregate

2011 ◽  
Vol 308-310 ◽  
pp. 980-986 ◽  
Author(s):  
Jia Liu ◽  
Rong Hui Zhang ◽  
Can Qiang Mai
Keyword(s):  
Dry Weight ◽  
Test Methods ◽  
Compaction Test ◽  
Weight Density ◽  
Large Particles ◽  
Vibration Compaction ◽  
Granular Base ◽  
Dense State ◽  
Stable Material ◽  
Standard Compaction

The disease causes by the application of cement-stabilized macadam in our country first-class highway mainly performance as serious shrinkage fracture and other destructions like decreased capacity etc.This mainly related to test, design and other methods of the cement stabilized macadam. In the cement stabilization granular base construction,according to the standard job practice, uses the inorganic binding stable material compaction test to perform the standard compaction test. Doing compactness test at the scene, always present that the dry weight density is bigger than the maximum value result made by compaction test, result made by compactness test can more than 100%.The compaction principle of vibration compaction test is through pressure exciting force over the compacted materials,forced the downing of solid materials have a "resonance", In this state, the small particles aggregate can filling the gap between the large particles aggregate, to achieve the dense state. And during this process do not need too much water as lubricant. Therefore the vibration compaction test definite intensity result tallies with the scene reality. To imitation effects of roller compacted to improve the performance of cement stabilized gravel, the use of vibration method designed cement stabilized gravel is very necessary and timely.

IT IS NECESSARY TO UNDERSTAND THE VALUE OF K DENSITY WHEN TESTING THE QUALITY OF NATURAL AGGREGATE LAYER IN ROAD COAT STRUCTURE IN THE SOUTH

2020 ◽  
Vol 43 (01) ◽  
Author(s):  
LE TAN
Keyword(s):  
Field Test ◽  
The South ◽  
The Road ◽  
Natural Aggregate ◽  
Exact Determination ◽  
Standard Compaction

Density is an important parameter reflects the quality of the foundation and base construction. Therefore, the exact determination of density parameters is extremely necessary in the work of checking and accepting the work items. The paper presents the results of the research to determine the density of the natural mix layer in the road coat structure with flexible and rational adjustment of the oversized grain content - during standard compaction as well as sampling for field test of density to overcome difficulties and obstacles when implementing the inspection of road structure.

scholarly journals Development of a Novel Multifunctional Cementitious-Based Geocomposite by the Contribution of CNT and GNP

Nanomaterials ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 961
Author(s):  
Mohammadmahdi Abedi ◽  
Raul Fangueiro ◽  
António Gomes Correia
Keyword(s):  
Optimum Concentration ◽  
Dry Density ◽  
Maximum Dry Density ◽  
X Ray ◽  
Freeze Thaw ◽  
Climatic Cycles ◽  
Negative Impacts ◽  
Compaction Method ◽  
Hybrid Carbon ◽  
Standard Compaction

In this study, a self-sensing cementitious stabilized sand (CSS) was developed by the incorporation of hybrid carbon nanotubes (CNTs) and graphene nanoplatelets (GNPs) based on the piezoresistivity principle. For this purpose, different concentrations of CNTs and GNPs (1:1) were dispersed into the CSS, and specimens were fabricated using the standard compaction method with optimum moisture. The mechanical and microstructural, durability, and piezoresistivity performances, of CSS were investigated by various tests after 28 days of hydration. The results showed that the incorporation of 0.1%, 0.17%, and 0.24% CNT/GNP into the stabilized sand with 10% cement caused an increase in UCS of about 65%, 31%, and 14%, respectively, compared to plain CSS. An excessive increase in the CNM concentration beyond 0.24% to 0.34% reduced the UCS by around 13%. The addition of 0.1% CNMs as the optimum concentration increased the maximum dry density of the CSS as well as leading to optimum moisture reduction. Reinforcing CSS with the optimum concentration of CNT/GNP improved the hydration rate and durability of the specimens against severe climatic cycles, including freeze–thaw and wetting–drying. The addition of 0.1%, 0.17%, 0.24%, and 0.34% CNMs into the CSS resulted in gauge factors of about 123, 139, 151, and 173, respectively. However, the Raman and X-ray analysis showed the negative impacts of harsh climatic cycles on the electrical properties of the CNT/GNP and sensitivity of nano intruded CSS.

scholarly journals The Implementation of Industrial Byproduct in Malaysian Peat Improvement: A Sustainable Soil Stabilization Approach

Materials ◽  
2021 ◽  
Vol 14 (23) ◽  
pp. 7315
Author(s):  
Afnan Ahmad ◽  
Muslich Hartadi Sutanto ◽  
Niraku Rosmawati binti Ahmad ◽  
Mastura Bujang ◽  
Mazizah Ezdiani Mohamad
Keyword(s):  
Silica Fume ◽  
Soil Stabilization ◽  
Experimental Tests ◽  
Mechanical Tests ◽  
Substantial Improvement ◽  
Engineering Properties ◽  
Dense Matrix ◽  
Test Parameters ◽  
Problematic Soil ◽  
Standard Compaction

Peat is a well-known problematic soil associated with poor engineering properties. Its replacement with an expensive competent foundation material is practiced for road embankment construction which is costly and causes greenhouse gas emissions. Therefore, this paper investigated the effectiveness of a byproduct from a metal industry (silica fume) to stabilize peat along with ordinary Portland cement (OPC) through a series of experimental tests. After peat-indexed characterization, a number of standard compaction and mechanical tests were performed on the stabilized and parent peat. For this purpose, nine designated mixes were prepared possessing various combinations of silica fume (SF) and 10–20% OPC. Unconfined compressive strength (UCS) and California Bearing Ratio (CBR) tests were carried out after 7, 14, and 28 days of curing to assess strength enhancement and binder effectiveness, and the microstructural evolution induced by the binders was examined with scanning electron microscopy (SEM). The analysis revealed a substantial improvement in mechanical properties with the incorporation of SF and OPC, ultimately meeting the minimum strength requirement for highway construction (i.e., 345 kPa). A peak UCS of 1063.94 kPa was recorded at 20% SF, and an unsoaked CBR value of 42.95 was observed using 15% SF and 15% OPC after 28 days of curing. Furthermore, the increasing percentage of hydraulic binders exhibited brittle, collapsible failure, while the microstructural study revealed the formation of a dense matrix with a refined pore structure in the treated peat. Finally, a significant statistical analysis was carried out by correlating the test parameters. In this way, rather than stockpiling and dumping, an industrial byproduct was implemented in peat stabilization in an eco-friendly manner.

scholarly journals ANALISIS ENERGI PEMADATAN TANAH DI LABORATORIUM

2017 ◽  
Vol 2 (1) ◽  
pp. 14
Author(s):  
Fakhrul Rozi Yamali ◽  
Fadlan Fadlan
Keyword(s):  
Number Of Layers ◽  
Compaction Energy ◽  
The Difference ◽  
Different Levels ◽  
Standard Compaction

The density test for soil in the laboratory can be a mild density test (standard proctor) and a modified density test (modification proctor). Both types of compaction provide different levels of density. This paper aims to analyze the energy produced by both types of compaction. The results show that the compaction modification energy is greater than the standard compaction energy. These results are influenced by the number of layers and the difference of the mass of the pounder on both types of compactionKey words: compaction energy, standard proctor, modified proctor

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