scholarly journals ANALYSIS OF LATERITE SOIL WITH PORTLAND CEMENT MIXED VARIATIONS AND THE EFFECT ON THE CBR UNSOAKED

2021 ◽  
Vol 5 (2) ◽  
pp. 60-73
Author(s):  
Ahmad Ravi ◽  
Hurul 'Ain ◽  
Betti Ses Eka Polonia ◽  
M. Hanif Faisal
Keyword(s):  
Bearing Capacity ◽  
Soil Stabilization ◽  
Road Construction ◽  
Chemical Compounds ◽  
Soil Improvement ◽  
Expansive Clay ◽  
Traffic Loads ◽  
Construction Loads ◽  
Strength And Durability ◽  
Test Result

Ketapang and Kayong Utara Regency have road construction that often suffers damage before the planned life age caused by the behavior of expansive clay. The subgrade is a fundamental structure in building road construction because the subgrade will support traffic loads or construction loads. The strength and durability of the pavement structure road will depend on the properties and bearing capacity of the subgrade. Practically soil stabilization is a reinforcement engineering against foundation or subgrade by using mixed materials. Therefore, different soil improvement variations are needed. Based on the test result, the CBR value of Sukadana initially gets a 2.95% point. The CBR value for the 6% and 10 % mixture, respectively, gets 17.14% and 25.02%. The CBR value of Sungai Melayu Rayak originally get 4.65% point. Then, for the 6% and 10% mixture, the CBR values increased by 13.78% and 18%. The value of the bearing capacity of the highway soil construction can be know from the results of CBR testing on each variation. The CBR also can measure the strength of the soil. The addition of cement to the earth tends to increase the bearing capacity of the ground. It is because cement can function as a binder between soil particles with chemical compounds contained in cement.

Bearing Capacity Improvement of Shallow Foundations Using Cement-Stabilized Sand

2016 ◽  
Vol 723 ◽  
pp. 795-800 ◽  
Author(s):  
Habib Rasouli ◽  
Hana Takhtfirouzeh ◽  
Abbasali Taghavi Ghalesari ◽  
Roya Hemati
Keyword(s):  
Bearing Capacity ◽  
Soil Stabilization ◽  
Cement Content ◽  
Experimental Tests ◽  
Dry Weight ◽  
Soil Improvement ◽  
Reinforced Soil ◽  
Shallow Foundation ◽  
Engineering Properties ◽  
Suitable Material

In order to attain a satisfactory level of safety and stability in the construction of structures on weak soil, one of the best solutions can be soil improvement. The addition of a certain percentage of some materials to the soil may compensate for its deficiency. Cement is a suitable material to be used for stabilization and modification of a wide variety of soils. By using this material, the engineering properties of soil can be improved. In this study, the effect of soil stabilization with cement on the bearing capacity of a shallow foundation was studied by employing finite element method. The material properties were obtained by conducting experimental tests on cement-stabilized sand. Cement varying from 2% to 8% by soil dry weight was added for stabilization. The effect of reinforced soil block dimensions, foundation width and cement content were investigated. From the results, it can be figured out that by stabilizing the soil below the foundation to certain dimensions with the necessary cement content, the bearing capacity of the foundation will increase to an acceptable level.

scholarly journals Effect of Nano-Additives on the Strength and Durability Characteristics of Marl

Minerals ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 1119
Author(s):  
Mehdi Mirzababaei ◽  
Jafar Karimiazar ◽  
Ebrahim Sharifi Teshnizi ◽  
Reza Arjmandzadeh ◽  
Sayed Hessam Bahmani
Keyword(s):  
Bearing Capacity ◽  
Carbon Dioxide Emissions ◽  
Soil Stabilization ◽  
Nano Silica ◽  
High Carbon ◽  
Volume Changes ◽  
Nano Alumina ◽  
Nano Additives ◽  
Strength And Durability ◽  
High Carbon Dioxide

Low bearing capacity soils may pose serious construction concerns such as reduced bearing capacity and excessive hydro-associated volume changes. Proper soil remediation techniques must be planned and implemented before commencing any construction on low bearing capacity soils. Environmentally friendly soil stabilizers are gradually replacing traditional soil stabilizers with high carbon dioxide emissions such as lime and cement. This study investigated the use of an alternative pozzolanic mix of nano-additives (i.e., nano-silica and nano-alumina) and cement to reduce the usage of cement for achieving competent soil stabilization outcomes. A series of unconfined compressive strength (UCS), direct shear, and durability tests were conducted on marl specimens cured for 1, 7, and 28 days stabilized with nano-additives (0.1~1.5%), 3% cement, and combined 3% cement and nano-additives. The UCS and shear strength of stabilized marl increased with nano-additives up to a threshold nano-additive content of 1% which was further intensified with curing time. Nano-additive treated cemented marl specimens showed long durability under the water, while the cemented marl decomposed early. The microfabric inspection of stabilized marl specimens showed significant growth of calcium silicate hydrate (CSH) products within the micro fabric of nano-silica treated marl with reduced pore-spaces within aggregated particles. The results confirmed that nano-additives can replace cement partially to achieve multi-fold improvement in the strength characteristics of the marl.

scholarly journals Bearing Capacity Improvement of Expansive Soil: Stabilization with Cement and Iron Oxide Additive

2020 ◽  
Vol 331 ◽  
pp. 02005
Author(s):  
Sofwan ◽  
Sukiman Nurdin
Keyword(s):  
Iron Oxide ◽  
Bearing Capacity ◽  
Soil Stabilization ◽  
Expansive Soil ◽  
Expansive Clay ◽  
Test Results ◽  
Swelling Potential ◽  
Oxide Additive ◽  
Volume Increment ◽  
Capacity Improvement

This research is intended to increase the bearing capacity and durability of expansive clay subgrade with Portsoil Composite Cement (PCC) and Iron Oxide additives. Using two variants of the stabilization material composition; composition-1 is soil with 5% of PCC, and composition-2 is soil with 5% PCC + 0. 04% Iron Oxide). Tests include swelling potential, durability, and CBR (California Bearing Ratio). The test results showed that the performance of stabilization using composition-2 was able to reduce swelling potential on day 3 by 94. 44% (14. 44% greater than using composition-1), reducing the potential for volume increment by 94. 15% (greater 15. 02% compared to using composition-1) and weight to 93. 31% (15. 32% greater than using first). The highest CBR value in the 3 wet-dry cycle periods was nature soil 2. 32%, using composition-1 reached 25. 26%, while using composition-2 reached 36. 93% (11. 67% greater than CBR value using composition-1). That the addition of 0. 04% Iron Oxide to PCC-soil stabilization can significantly improve cement performance for expansive clay stabilization as a road subgrade.

scholarly journals MENINGKATKAN NILAI CBR TANAH SUB-GRADE DENGAN STABILISASI TANAH KAPUR

2019 ◽  
Vol 13 (1) ◽  
pp. 50
Author(s):  
Moch Sholeh ◽  
Yunaefi Yunaefi
Keyword(s):  
Road Construction ◽  
Soil Improvement ◽  
Clay Soils ◽  
Dry Density ◽  
Chemical Stabilization ◽  
High Plasticity ◽  
Expansive Clay ◽  
A Value ◽  
Poor Soil ◽  
Low Shear

Poor soil properties and disadvantage when used as the basis of a building or road construction, including high plasticity, low shear strength, large volume or density changes and large shrinkage potential. Various methods are used to improve the strength of expansive clay soils, including by adding chemicals (chemical stabilization). Soil improvement that has been done is to mix the soil with lime, but only to review the dry density (γd). The purpose of this study is to explain the effect of adding lime to the soil on increasing CBR values, swelling, and knowing the optimum lime percentage in order to obtain maximum CBR and minimum swelling values. The results of the original soil swelling test showed a value of 9.14%, with the addition of lime percentage the swelling value showed a decrease. From the results of the addition of lime percentage showed the greatest decrease occurred in the addition of lime by 12% that is equal to 70.35%. So it can be concluded with the addition of lime will improve the original soil because it can reduce the value of swelling

scholarly journals Bearing Capacity of Soft Marine Soil Stabilization with Cockel Shell Powder (CSP)

2020 ◽  
Vol 9 (3) ◽  
pp. 1490-1497
Keyword(s):  
Bearing Capacity ◽  
Soil Stabilization ◽  
Soft Soil ◽  
Base Material ◽  
Road Construction ◽  
Dry Density ◽  
Index Test ◽  
Geotechnical Characteristics ◽  
Stabilization Technique ◽  
Marine Soil

The quality of the subgrade is depending on the geotechnical properties, strength and the stabilization technique adopted for problematic soil in order to increase the bearing value. In Malaysia, soft soil is a challenging due to very low strength value and low California Bearing Ratio (CBR) value as well. The soil stabilization process is conducted to increase bearing capacity of marine soil. An experimental works cover from identification of basic soil properties by index test, compaction test and CBR test. Though, the marine soils have to be treated and stabilized with available methods like using natural materials or additive agents. In this study, geotechnical characteristics of marine soil stabilized with CSP content were determined. The unsoaked treated marine soil stabilized with CSP was investigated. Four different compounds of the soil with 2.5, 5, 7.5 and 10% of CSP were mixed and added to determine the unsoaked CBR of the stabilized soil compounds. The results show the inclusion of CSP reduced the plasticity of the soil and highest dry density was decreased with an increase in the optimum water content. Moreover, by increasing the content of CSP the highest CBR value at 2.5 and 5.0 mm penetrations were achieved. The increasing percentage volume of water usage indicates the decreasing value of CBR. The results indicated that CSP contents have potential as a natural stabilizer for applications such as road sub-base material in road construction. The road sub-base will gain great strength with addition of CSP on marine soil

scholarly journals Experimental Study on Soils Stabilized with Two Types of Plastic Waste

2020 ◽  
Author(s):  
Dinis Gardete ◽  
Rosa Luzia
Keyword(s):  
Bearing Capacity ◽  
Soil Stabilization ◽  
Soil Improvement ◽  
Plastic Waste ◽  
Unit Weight ◽  
Dry Unit Weight ◽  
High Penetration ◽  
Waste Stabilization ◽  
Cbr Test ◽  
Plastic Wastes

The reuse and recycling rates for plastics are still below desirable values. The valorisation of plastic wastes that presently end in landfills or is incinerated can help to mitigate this environmental problem. There have been studies in soil improvement using plastic waste. Two  types of plastic waste were used to assess their ability to improve soil properties for embankment construction and pavement layers. The selected plastic wastes are made from shredded package labels and ground bottles. The main properties of the soils were characterized. Three percentages of plastic waste were used, and the bearing capacity of the soil determined using CBR test (California Bearing Ratio). The results from the tests show that plastic waste stabilization leads to an increase in bearing capacity, expressed in CBR values, for low contents of plastic waste. This increase was more effective for high penetration values. Reduction in the bearing capacity was observed for higher plastic waste contents. Maximum dry unit weight decreased with increasing plastic waste content, whereas expansion increased with increasing plastic waste content. Keywords: Soil stabilization, Plastic waste, CBR test, Compaction, Earthworks

scholarly journals PERBANDINGAN PENGGUNAAN SEMEN DAN GARAM UNTUK STABILISASI TANAH DASAR

2019 ◽  
Vol 12 (2) ◽  
pp. 93
Author(s):  
Zuhrufah Diana Azza, Gerard Aponno, Dwi Ratnaningsih
Keyword(s):  
Bearing Capacity ◽  
Classification System ◽  
Soil Stabilization ◽  
American Association ◽  
Road Construction ◽  
Soil Classification ◽  
High Plasticity ◽  
The Road ◽  
State Highway ◽  
Before And After

Soil is the key of the road foundations. Soil of high CBR value will have good bearing capacity for road construction. Conversely, soil stabilization must be carried out to the subgrade that has bad bearing capacity. The goals of this analysis are to find out the soil characteristict of before stabilization, CBR values of before and after stabilization, the optimum cement use and salt (NaCl) use as stabilizers.The results of soil poperties test in Silt High Plasticity (MH) based on Unified Soil Classification System (USCS) and A-7-5 based on American Association of State Highway and Transportation Official (AASHTO). The result of CBR without stabilization is 3.64% for standard soaked and 5.13%  for modified soaked. The maximum results of stabilized testing with cement showed 9.802 % CBR; 69.298% CBR of each sample respectively standard and modified soaked test; of salt showed 3.93% CBR; 5.33% CBR of standard and modified soaked test of each sample respectively.   Keywords: CBR, cement, NaCl, soil stabilization

scholarly journals Peningkatan Nilai CBR Tanah Dasar (Sub Grade) dengan Penambahan Kapur dan Abu Sekam Padi

2019 ◽  
Vol 14 (2) ◽  
pp. 24
Author(s):  
Liliwarti -
Keyword(s):  
Bearing Capacity ◽  
Rice Husk ◽  
Soil Stabilization ◽  
Rice Husk Ash ◽  
Road Construction ◽  
Traffic Load ◽  
Rigid Pavement ◽  
The Road ◽  
Road Pavement ◽  
On The Road

The subgrade is very important on road construction, because its functions for support the traffic loads. The subgrade is not able to bearing capacity the traffic load , can cause damage such as cracks, settlement,and deformation on the flexible pavement or rigid pavement. to solve in this problems, it is necessary to improve the mechanical properties of subgrade for increasing soil bearing capacity and reducing the swelling potential. The Sicincin ring road - Lubuk Alung, Padang Pariaman district which has deformed, settlement and cracks on the road pavement, caused by poor bearing capacity of the subgrade. To solve these problems, it is necessary to have the soil improvements (stabilization) for subgrade In this paper soil stabilization is done by mixing soil with lime and rice husk ash (variations in lime content of 5%, 8%, 11%, 14% and 17%) and rice husk ash (constant 2.5%) .The compaction test and CBR test is carried for each variation. The results in this study obtained the most optimal percentage of lime + rice husk ash is 11%, CBR design is 25%, and swelling value of 0.13%. CBR value of subgrade without lime and rice husk ash obtained CBR = 2.3%. So that there is a significantly increase in CBR value if using lime and rice husk ash as stabilization material for subgrade. These results can be used by experts to choose effective stabilization methods.

scholarly journals Pemanfaatan Semen Slag untuk Stabilisasi Tanah dan Pengaruhnya Terhadap Nilai CBR Berdasarkan Variasi Kadar Air Sisi Basah Optimum

2021 ◽  
Vol 18 (2) ◽  
pp. 132-140
Author(s):  
Enden Mina ◽  
Woelandari Fathonah ◽  
Rama Indera Kusuma ◽  
Naufal Abdurrasyid
Keyword(s):  
Bearing Capacity ◽  
Road Construction ◽  
Soil Improvement ◽  
California Bearing Ratio ◽  
Grain Size Analysis ◽  
Size Analysis ◽  
Ratio Test ◽  
High Plasticity ◽  
Slag Cement ◽  
Test Soil

Many of the damage in road construction occurred because the soil did not have a good bearing capacity, therefore soil improvement was needed to increase the strength of the soil. One of the damaged roads that occur due to the lack of soil bearing capacity is at Priyayi Mosque Village Road, Kasemen District, Serang City which has a low carrying capacity with a CBR value of 1.99%. In this study, several tests were carried out, soil physical and California Bearing Ratio test. Soil physical tests carried out were water content, soil density, grain size analysis, Atterberg limits, compaction test and, CBR with the addition of slag cement with variations of 0%, 5%, 10%, 15% based on Variation of optimum wet side moisture content. The result of soil physical properties testing obtained the type of soil is an organic clay with high plasticity. The results of the California Bearing Ratio test on the original soil had a CBR value of 2.4% and there was an increase to the optimum at the addition of 15% Slag Cement in 0 and 3 days of curing with a CBR value of 11.2% and 15.25%. Based on these results, it can be concluded that the cement slag content of 15% with 3 days of curing time can increase the bearing capacity of the soil and fulfill the requirements as a good road subgrade

scholarly journals PENINGKATAN KEKUATAN TANAH ORGANIK DENGAN PENCAMPURAN EMPAT JENIS LIMBAH RAMAH LINGKUNGAN

2021 ◽  
Vol 4 (4) ◽  
pp. 867
Author(s):  
Aldo Febrian ◽  
Aniek Prihatiningsih
Keyword(s):  
Bearing Capacity ◽  
Soil Stabilization ◽  
Organic Soil ◽  
Soil Improvement ◽  
Infrastructure Development ◽  
Different Types ◽  
Egg Shells ◽  
Waste Mixture ◽  
Physical Stabilization ◽  
General Method

Waste is one of the problems in Indonesia. Based on the Ministry of the Environment, each person produces an average of 0.8 kg of waste per day. The average waste per person will increase in line with the increase in people's welfare and lifestyle. Assuming 220 million Indonesians, waste reaches 176,000 tons per day. Accompanied by increasing population growth, the need for infrastructure development on land is increasing. Soils that is often used for construction land is organic soil. It has low soil bearing capacity values and soil improvement methods are commonly used. The general method usually is to mix the soil with better bearing capacity. To minimize costs, a physical stabilization system is carried out that can use soil improvement methods with waste. This can deal with 2 problems at once, where there is the use of certain types of waste and also the planning of organic soil stabilization with small carrying capacity. By doing a triaxial test on organic soil by mixing 4 different types of waste, it shows that the best waste mixture that can affect the bearing capacity of the soil in sequence is coconut husk, tile fragments, construction demolition debris, and chicken egg shells.    ABSTRAKLimbah merupakan salah satu permasalahan di Indonesia, Berdasarkan informasi Kementerian lingkungan Hidup, setiap orang menghasilkan rata-rata 0,8 kg sampah per hari. Rata-rata limbah per orang akan meningkat sejalan dengan meningkatnya kesejahteraan dan gaya hidup masyarakat. Dengan asumsi 220 juta penduduk Indonesia, limbah mencapai 176.000 ton per hari. Diiringi dengan peningkatan pertumbuhan penduduk, maka kebutuhan pembangunan infrastruktur di lahan tanah semakin bertambah. Salah satu tanah yang sering dipakai untuk lahan konstruksi adalah tanah organik. Tanah organik memiliki nilai daya dukung tanah yang rendah dan biasa dilakukan metode perbaikan tanah. Metode umum yang biasa dilakukan adalah dengan melakukan pencampuran tanah dengan daya dukung yang lebih baik. Untuk memperkecil biaya maka dilakukannya sistem stabilisasi fisik yang bisa menggunakan metode perbaikan tanah dengan limbah. Hal ini bisa menangani 2 masalah sekaligus, dimana adanya pemanfaatan dari jenis limbah tertentu dan juga perencanaan stabilisasi tanah organik dengan daya dukung kecil. Dengan melakukin uji triaksial pada tanah organik dengan mencampurkan 4 jenis limbah berbeda menunjukan bahwa campuran limbah terbaik yang bisa mempengaruhi daya dukung tanah secara berurutan adalah sabut kelapa, pecahan genteng, puing pembongkaran konstruksi, dan cangkang telur ayam.

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