scholarly journals ANALYZED SOIL IMPROVEMENT BASED GYPSUM AND CEMENT IN SOIL CLAY

2020 ◽  
Vol 7 (12) ◽  
pp. 12-19
Author(s):  
Nuril Mahda Rangkuti
Keyword(s):  
Physical Properties ◽  
Carrying Capacity ◽  
Clay Soil ◽  
Soil Improvement ◽  
Soil Samples ◽  
California Bearing Ratio ◽  
Curing Time ◽  
Sample Testing ◽  
Soil Clay ◽  
Physical Changes

Land is an important element of the structure underneath a construction, so that the soil must have a good carrying capacity. But the reality on the ground is that many soils have low carrying capacity, so it is necessary to stabilize the soil with gypsum and cement. This study aims to determine the effective percentage of gypsum and cement addition and the effect of the addition of Gypsum and Cement to physical changes in clay soil in terms of the CBR (California Bearing Ratio) value of the curing time. This research was conducted in the laboratory, by testing the physical properties of the soil and the carrying capacity of the soil (CBR) with variations in the addition of gypsum and cement by 1%, 3%, and 5% with a long curing time of 1, 7, and 14 days . Sample testing is carried out with two treatments, namely soil samples are first cured and then compacted and the sample is solidified first and then cured. From the research results obtained the largest CBR (California Bearing Ratio) value occurs in the variation of the addition of Gypsum and Cement 5% with the length of time for soil specimens to be compacted first before curing is equal to 41.54%, this is due to the mixture of soil with gypsum and cement has been manjai solid before the collection can occur, the cavities between soil particles also become solid, so that the strength also increases. From the California Bearing Ratio results, it can be seen that the addition of gypsum and cement to clay soil shows an increase in the value of California Bearing Ratio on clay.

scholarly journals Large Scale Laboratory Investigation in the Improvement of Subgrade Characteristics of Clay Soil Stabilized with Construction Demolition Waste

2021 ◽  
Author(s):  
Baki Bagriacik ◽  
Keyword(s):  
Laboratory Investigation ◽  
Large Scale ◽  
Clay Soil ◽  
Soil Improvement ◽  
Economic Life ◽  
Stress Distributions ◽  
Curing Time ◽  
Demolition Waste ◽  
Alternative Method ◽  
Storage Facilities

Earthquakes, are a serious problem for a country where necessary measures should be taken. In this context, buildings that have completed their economic life have been demolished in recent years. A lot of construction demolition waste (CDW) occurred from the destroyed buildings. These wastes were collected in the storage facilities and took up a lot of space. So, it is vital to use these wastes both by emptying the storage facilities and reusing them without harming the nature. An alternative method for re-utilizing these wastes is soil improvement. In this context, the usability of CDW in the improvement of a clay soil was investigated. The bearing bearing ratios (BCR) and stress distributions of the clay soil were examined for different CDW ratios, different improvement depths(H / D) and different curing times. As a result, it was suggested that the optimum CDW ratio should be 14%, the improvement depth should be 1.5 and the optimum curing time should be 14 days in clay soil. The findings obtained from large-scale experiments and microstructure analyzes, it showed that CDW is a waste that can be used in soil improvement.

scholarly journals Stabilisasi Tanah Lempung Desa Tumbang Rungan dengan Roadbooster untuk Perkerasan Jalan

2017 ◽  
Vol 5 (2) ◽  
pp. 117-122
Author(s):  
Evi Meilisa Adhanty ◽  
Rida Respati ◽  
Norseta Ajie Saputra
Keyword(s):  
Compressive Strength ◽  
Carrying Capacity ◽  
Unconfined Compressive Strength ◽  
Soil Stabilization ◽  
Clay Soil ◽  
Soil Layer ◽  
California Bearing Ratio ◽  
Pavement Materials ◽  
Road Pavement ◽  
The Way

Land is the foundation for construction. Foundation is the lowest part of a construction, serves to channel the load directly from the construction structure to the soil layer at underneath it. Soils that have bad properties are very unfavorable if used for something construction, especially for highway pavement. The way to increase the carrying capacity of clay soil is to do soil stabilization efforts, that is, using roadbooster as a stabilizing chemical and is expected to improve the nature of the clay and meets the requirements for road pavement materials. In this study will stabilization of the clay soil of Tumbang Rungan Village Palangka Raya with the main parameters which is used as a research reference, namely California Bearing Ratio (CBR) immersion and Unconfined Compressive Strength (UCS). Based on the results of testing the clay soil of Tumbang Rungan Village, Palangka Raya, the data were obtained: Original ground immersion CBR 7.89%, CBR immersion 0% roadbooster 76%, CBR 4% immersion roadbooster 40.85%, CBR immersion 8% roadbooster 27.08%, UCS original soil 0.56 kg / cm2, UCS 0% roadbooster 7.30 kg / cm2, UCS 4% roadbooster 7.40 kg / cm2, and UCS 8% roadbooster 8.30 kg / cm2. From the CBR data, you can see the value The highest CBR is when mixing 0% roadbooster or without additional roadbooster, while the highest UCS value lies in mixing 8% roadbooster.

scholarly journals Pengaruh Waktu Pemeraman Dengan Penambahan Kapur Sebagai Bahan Additve Pada Tanah Lempung Ekspansif Terhadap Nilai CBR Tanah

2019 ◽  
Vol 3 (2) ◽  
pp. 97
Author(s):  
Bahtiar Efendi Situmorang ◽  
Melloukey Ardan
Keyword(s):  
Physical Properties ◽  
Strong Support ◽  
Essential Element ◽  
Soil Physical Properties ◽  
California Bearing Ratio ◽  
Curing Time ◽  
Soil Stabilisation ◽  
Soil Clays ◽  
Under Construction ◽  
Properties Of Soil

<p><em>The soil is an essential element of a structure under construction so that the soil should have a good carrying capacity. But the fact the field is found soil that has the low bearing capacity, so it is necessary to conduct soil stabilisation with lime. The study aims to determine the percentage that is effective in adding lime and the effect of adding lime to the soil physical properties change in terms of the value of CBR (California Bearing Ratio) to the long curing time. This research was conducted in the laboratory, by testing the physical properties of soil and the strong support of land (CBR) with the addition of lime variation of 1%, 3%, and 5% by long curing 0, 4, 7 and 14 days. Tests were conducted with two treatments, soil samples were cured first and then compacted and samples were pressed first and brooded. The result is the value of CBR.</em><em> %. From the results of the value of the California Bearing Ratio can be seen that the addition of sand quarsa on soil clays showed an increase in the value of the California Bearing Ratio in soil clays.</em></p>

scholarly journals Mapping the Physical Properties of Soils and the California Bearing Ratio (CBR) Value for Different Soil Types: A Case Study in the Bukit Kemuning and Pugung Tampak Areas

2022 ◽  
Vol 18 ◽  
pp. 90-99
Author(s):  
Lusmeilia Afriani ◽  
Nursyirwan Nursyirwan ◽  
Ryzal Perdana ◽  
Rina Febrina ◽  
Yan Juansyah
Keyword(s):  
Physical Properties ◽  
Civil Engineering ◽  
Soil Samples ◽  
Physical Characteristics ◽  
Geographical Information ◽  
California Bearing Ratio ◽  
Dry Density ◽  
Plastic Limit ◽  
Cbr Test ◽  
Road Paving

It is widely accepted that soil is a mixture of mineral constituents that have accumulated over time. The physical characteristics of soil vary according to the mineral and organic matter content and the process of formation. The soil`s unique characteristics have been the subject of research in the field of civil engineering, which has continued to evolve to the present day due to the land`s requirement for civil engineering construction, such as road paving. As a result, the current study sought to determine the similarity of soil samples based on their physical properties and California Bearing Ratio (CBR) values, as well as the relationship between the soil`s physical properties and CBR values. To our knowledge, there is hardly little research in the literature investigating the topic under our investigation. Furthermore, we also mapped the physical characteristics and CBR values of numerous distinct soil samples using a Geographical Information System (GIS). This study concentrated on the West Lampung Regency, specifically the area between Bukit Kemuning in Central Lampung and Liwa in West Lampung, along the lines of Bukit Kemuning, Liwa, and Krui, all the way to the Lampung – Bengkulu province border. The soil samples from the area were taken for two tests: the unsoaked CBR test and the soaked CBR test. The results of the tests show that a 31-kilometre distance does not result in a significant difference in soil properties, which are generally similar except in clay-rich areas. Furthermore, the results of the laboratory analysis show that the amount of water in the soil sample affects the Liquid Limit (LL), Plastic Limit (PL), Maximum Dry Density (MDD), and CBR values; the lower the plastic limit value, and thus the lower the CBR value, the less water in the soil. The implications of the current findings are also discussed.

OLIN BRASS ALLOY C19020

Alloy Digest ◽  
2020 ◽  
Vol 69 (2) ◽  
Keyword(s):  
Corrosion Resistance ◽  
High Temperature ◽  
Physical Properties ◽  
Tensile Properties ◽  
Carrying Capacity ◽  
Service Temperature ◽  
Brass Alloy ◽  
Copper Nickel ◽  
Temperature Performance ◽  
Company Limited

Abstract Olin Brass Alloy C19020 is a copper-nickel-tin low-alloyed copper. It was developed as alloy NB-105 by Dowa Metaltech Company Limited, Japan, to meet increasing requirements of current carrying capacity, stiffness, formability and service temperature survivability being demanded by the automotive and electronic industries. This datasheet provides information on composition, physical properties, elasticity, and tensile properties. It also includes information on high temperature performance and corrosion resistance as well as forming and joining. Filing Code: Cu-905. Producer or source: Olin Brass, GBC Metals, LLC.

Experimental Research on the Engineering Properties of Foam-Improved Red Clay Soil

2011 ◽  
Vol 261-263 ◽  
pp. 1831-1835
Author(s):  
Guo Gang Qiao ◽  
Da Jun Yuan ◽  
Bo Liu
Keyword(s):  
Experimental Research ◽  
Clay Soil ◽  
Soil Improvement ◽  
Engineering Properties ◽  
Screw Conveyor ◽  
Test Results ◽  
X Ray Diffraction ◽  
Shield Tunneling ◽  
Red Clay ◽  
Improvement Measures

Red clay soil is widely distributed in south China, the microstructure of red clay soil was studied applying scanning electron microscopy (SEM), and the X-ray diffraction analysis (XRD) test found that a large number of swelling inducing minerals, for example, montmorillonite, illite-montmorillonite or chlorite-smectite were contained in the red clay soil. Shield tunneling in this kind of stratum is prone to arising “cake” and “arch” phenomena and it prone to lead screw conveyor device unsmooth dumping, so soil improvement measures must be taken. Foam as the most advanced soil conditioner has been widely used in shield construction. Using self-developed foam agent, experimental research on foam conditioning red clay soil was carried out, test results show that foam can not only significantly reduce the soil shear strength, but also can greatly enhance the soil's compressibility and fluidity, which is significant for the smooth dumping and excavation face stability maintenance.

scholarly journals Effects of Palm Kernel Shell Ash on Lime-Stabilized Lateritic Soil

2017 ◽  
Vol 25 (3) ◽  
pp. 1-7 ◽  
Author(s):  
Emeka Segun Nnochiri ◽  
Olumide M. Ogundipe ◽  
Opeyemi E. Oluwatuyi
Keyword(s):  
Palm Kernel ◽  
Soil Samples ◽  
California Bearing Ratio ◽  
Lateritic Soil ◽  
Optimum Amount ◽  
Lime Stabilization ◽  
Palm Kernel Shell

Abstract The research investigated the effects of palm kernel shell ash (PKSA) on lime-stabilized lateritic soil. Preliminary tests were performed on three soil samples, i.e., L1, L2 and L3 for identification; the results showed that L1 was A-7-6, L2 was A-7-6, and L3 was A-7-6. The optimum amount of lime for each of the soil samples was achieved. The optimum amount for L1 was 10%, for L2, 8% and for L3, 10%; at these values they recorded the lowest plasticity indexes. The further addition of PKSA was performed by varying the amount of PKSA and lime added to each of the soil samples. The addition of 4% PKSA+ 6% lime, the addition of 4% PKSA + 4% lime, and the addition of 4% PKSA + 6% lime increased the California Bearing Ratio (CBR) to the highest values for L1, L2 and L3 from 8.20%. It was concluded that PKSA can be a suitable complement for lime stabilization in lateritic soil.

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