scholarly journals The Effect of Polymer-Cement Stabilization on the Unconfined Compressive Strength of Liquefiable Soils

2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
Ali Ateş
Keyword(s):  
Compressive Strength ◽  
Compression Strength ◽  
Unconfined Compressive Strength ◽  
Soil Stabilization ◽  
Sandy Soils ◽  
Pulse Velocity ◽  
Unit Weight ◽  
Unconfined Compression Strength ◽  
Compression Tests ◽  
Unconfined Compression

Soil stabilization has been widely used as an alternative to substitute the lack of suitable material on site. The use of nontraditional chemical stabilizers in soil improvement is growing daily. In this study a laboratory experiment was conducted to evaluate the effects of waterborne polymer on unconfined compression strength and to study the effect of cement grout on pre-venting of liquefiable sandy soils. The laboratory tests were performed including grain size of sandy soil, unit weight, ultrasonic pulse velocity, and unconfined compressive strength test. The sand and various amounts of polymer (1%, 2%, 3%, and 4%) and cement (10%, 20%, 30%, and 40%) were mixed with all of them into dough using mechanical kneader in laboratory conditions. Grouting experiment is performed with a cylindrical mould of  mm. The samples were subjected to unconfined compression tests to determine their strength after 7 and 14 days of curing. The results of the tests indicated that the waterborne polymer significantly improved the unconfined compression strength of sandy soils which have susceptibility of liquefaction.

Unconfined Compression Strength of Tianluoshan Relic Soils Solidified by Silicone

2012 ◽  
Vol 610-613 ◽  
pp. 2908-2911 ◽  
Author(s):  
Xin Jun Chai ◽  
Chun Feng He ◽  
Yan Sheng Gao
Keyword(s):  
Compressive Strength ◽  
Compression Strength ◽  
Potential Application ◽  
Influence Factors ◽  
Curing Time ◽  
Unconfined Compression Strength ◽  
Compression Tests ◽  
Unconfined Compression ◽  
Moisture Condition ◽  
Curing Condition

Tianluoshan relic sites is a typical earthen sites located at moisture circumstances. The potential application of silicone for strengthening Tianluoshan relic soils were evaluated by a series of unconfined compression tests. The main considered influence factors includue: curing condition, curing time, and variation of water content. The results show that the compressive strength of Tianluoshan relic soils solidified by silicon increase with curing time, and silicon can effectively improve the strength of Tianluoshan relic soils under constant temperature & moisture condition.

Studi Pengaruh Abu Batu Bata terhadap SifatFisik dan Mekanik Lempung Terstabilisasi Kapur dari Kecamatan Tenayan Raya

2021 ◽  
pp. 17-23
Author(s):  
Soewignjo Agus Nugroho ◽  
Ferry Fatnanta ◽  
Giri Prayoga
Keyword(s):  
Compressive Strength ◽  
Shear Strength ◽  
Moisture Content ◽  
Compression Strength ◽  
Unconfined Compressive Strength ◽  
Soft Clay ◽  
Setup Time ◽  
Unconfined Compression Strength ◽  
Unconfined Compression ◽  
Optimal Moisture Content

Tenayan Raya Subdistrict is an area that has a thickness of soft clay layer. Some cases of building failure were cracks and tilts due to high shrinkage of soil. Nearby is also a brick home industry center, where ashes are produced from bricks burning. Soil Improvement of Tenayan-Raya's Clay and utilization of brick ash will be carried out in this research. This study aims to stabilize the soil with lime and utilize the brick ash to improve shear strength and bearing capacity of the soil. The study was conducted in the laboratory by making several combinations of content clay, lime, and Brick Ash (BA), for the soil mixture which will be added with 10% ash brick. The effect of curing and soaked will also be seen for its rising on soil properties of Unconfined Compression Strength, and CBR laboratories. The influence of water will also be reviewed on the dry side, optimal moisture content, and wet side. The test results show that the Soil has Low Plasticity soil type category CL-ML symbols, according to the Unified classification. Increasing of strength due to stabilization with lime is obtained in conditions of water in optimal moisture content, where the addition of lime is 10% and 10% brick ash, was produced to increase the maximum value of Unconfined Compression Strength and CBR laboratory value. Curing setup time and saturation (soaked) also had affect the value of Unconfined Compressive Strength and CBR laboratory test. At longer time for curing, shear strength will rise proved by the value of UCS Test andbearing capacity value also increase that can be seen of the laboratory CBR test. Curing will make the shrinkage of clay reduced, this can be proven from differences value of Unconfined Compressive strength test between samples with and without soaked, are relatively small. 

Relation of Microstructure and Unconfined Compression Strength of Soil Stabilized with TerraZyme

2013 ◽  
Vol 664 ◽  
pp. 760-763 ◽  
Author(s):  
Xin Zhang ◽  
Xin Ping Zhang ◽  
Hong Tao Peng ◽  
Qiang Xia ◽  
Jun Wang
Keyword(s):  
Compressive Strength ◽  
Soil Sample ◽  
Compression Strength ◽  
Unconfined Compressive Strength ◽  
Unconfined Compression Strength ◽  
Unconfined Compression ◽  
Soil Stabilizer ◽  
Stabilized Soil ◽  
Relationship Of ◽  
The Relationship

TerraZyme as an enzymatic soil stabilizer was used in this research. The stabilized soil was mixed with TerraZyme in proper proportion to determine the relationship of unconfined compression strength and microstructure caused by the introduction of TerraZyme. The experimental results show that the unconfined compressive strength of stabilized soil with TerraZyme added is higher than that without TerraZyme. The micrographs of scanning election microscopy (SEM) indicate that the microstructure of the stabilized soil sample with TerraZyme added is denser than that without TerraZyme. This is because the particles of stabilized soil sample treated with TerraZyme are more coarse and blocky than those untreated with TerraZyme. The stabilized soil is with fewer pores than that without TerraZyme. This kind of compact microstructure should be the basis of higher unconfined compressive strength of stabilized soil with TerraZyme added.

An Empirical Correlation between Unconfined Compression Strength and Curing Time for Cement-Soil

2012 ◽  
Vol 268-270 ◽  
pp. 642-645 ◽  
Author(s):  
Ying Di Liao ◽  
Chao Hua Jiang ◽  
Xing Guo Feng
Keyword(s):  
Compressive Strength ◽  
Compression Strength ◽  
Unconfined Compressive Strength ◽  
Soft Soil ◽  
Empirical Correlation ◽  
Curing Time ◽  
Unconfined Compression Strength ◽  
Unconfined Compression ◽  
Cement Soil ◽  
Basic Standard

Different cement types were used to stabilize coastal soft soil. The unconfined compression strength of each cement type treated soil was tested at different curing time. The results showed that the higher strength degree cement lead to the higher unconfined compression strength with same cement addition after curing 90 days. An empirical correlation between unconfined compressive strength and curing time was presented to forecast the unconfined compression strength of cement-soil. Additionally, the 14 day and the data of unconfined compressive strength at that time were suggested to use as the basic standard time and standard strength data respectively.

Influence of Curing Pressure on Unconfined Compressive Strength of Cemented Clay

2018 ◽  
Vol 928 ◽  
pp. 263-268 ◽  
Author(s):  
Anuchit Uchaipichat
Keyword(s):  
Compressive Strength ◽  
Unconfined Compressive Strength ◽  
Cement Content ◽  
Soft Clay ◽  
Peak Stress ◽  
Confining Pressure ◽  
Compression Tests ◽  
Unconfined Compression ◽  
Soil Cement ◽  
Curing Pressure

The soil-cement columns are generally installed and cured in the soft clay layers under confining pressure. The strength of the soil-cement columns may be influenced by confining pressure during curing period. In this study, the main objective was to study the influence of curing pressure on unconfined compressive strength of cemented clay. A series of unconfined compression tests was performed on a cement admixed clay sample cured under pressure values of 0 kPa (atmospheric pressure), 25kPa, 50kPa and 100 kPa using a typical unconfined compression equipment. The test samples with values of cement content of 0.5, 1.0 and 2.0 percent were cured for 28 days.The stress-strain curves obtained from all tests show a peak value of stress. The unconfined compressive strength or peak stress obviously increased with increasing cement content for all curing pressure conditions. It can be observed that the strength of samples gradually increased with curing pressure for cement content of 0.5 percent. For cement contents of 1.0 and 2.0 percent, the strengths of samples cured under pressures of 25 kPa dramatically increased from the strength of samples cured without pressure (0 kPa), however, the strengths of samples for curing pressures of 25, 50 and 100 kPa were not clearly different.

scholarly journals Stabilization of black cotton soil using coconut fiber

2021 ◽  
Vol 10 (1) ◽  
Author(s):  
K.U. Arathi ◽  
K.M. Arhulya ◽  
V. Vinaya ◽  
P.V. Pooja ◽  
V.V. Athira
Keyword(s):  
Compression Strength ◽  
Soil Stabilization ◽  
Expansive Soil ◽  
Liquid Limit ◽  
Black Cotton Soil ◽  
Unconfined Compression Strength ◽  
Unconfined Compression ◽  
Coconut Fiber ◽  
Loaded Structure ◽  
Properties Of Soil

Black cotton soil is a soil with low bearing capacity, swelling and shrinkage characteristics. Due to its peculiar characteristics, it forms a very poor foundation material. As black cotton soil is an expansive soil; it creates problem for lightly loaded structure than moderately loaded structure. Through this project, we are trying to study the improvements in the properties of soil by adding coconut fiber of varying percentages. Tests will be conducted to determine liquid limit and unconfined compression strength. Stabilization of soil is an effective method for improving the properties of soil. It has great significance in the future projects. Keywords: Soil stabilization, CBR, Atterberg limits

Experimental Investigation on Unconfined Compressive Strength of Cemented Soils Admixed with Saturated GAC

2021 ◽  
Vol 1042 ◽  
pp. 145-150
Author(s):  
Anuchit Uchaipichat
Keyword(s):  
Compressive Strength ◽  
Unconfined Compressive Strength ◽  
Cement Content ◽  
Unit Weight ◽  
Compression Tests ◽  
Compacted Soil ◽  
Curing Period ◽  
Soil Cement ◽  
Proctor Test ◽  
Cemented Soils

This research investigated the compressive strength of cemented soils admixed with saturated granular activated carbon (GAC). The saturated GAC was obtained from the water filtration system. A series of unconfined compressive strength was performed on both compacted soil-cement specimens and compacted soil-GAC-cement specimens with GAC content of 30 percent. All specimens were prepared by compaction with energy equivalent to the modified Proctor test. The results from modified Proctor tests showed that the maximum dry unit weight and the optimum moisture content of soil-GAC sample was less than those of soil sample. From the unconfined compression tests, there was tiny development of strength for both types of specimens with cement content of 1 percent throughout the curing period of 28 days. For both types of specimens with cement content of 2 and 3 percent, the significant development of strength occurred after curing for 3 days. The strength of specimens typically increased with increasing cement content. Generally, the strength of compacted soil-GAC-cement specimens was less than that of compacted soil- cement specimens. It was also observed that the relationships between normalized compressive strength ratio and curing period was unique for the specimens with the same cement content.

Unconfined Compression Strength of Tianluoshan Relic Soils Solidified by Methyl Acrylic Acid Resin

2012 ◽  
Vol 594-597 ◽  
pp. 343-346 ◽  
Author(s):  
Xin Jun Chai ◽  
Chun Feng He ◽  
Jie Wen Yu ◽  
Yan Sheng Gao ◽  
Chen Xi Rao
Keyword(s):  
Acrylic Acid ◽  
Compression Strength ◽  
Curing Time ◽  
Unconfined Compression Strength ◽  
Compression Tests ◽  
Unconfined Compression ◽  
Heritage Sites ◽  
Acid Resin ◽  
Curing Condition ◽  
Historical Heritage

The consolidation and conservation of earthen sites is one of the difficult problems at home and abroad. Tianluoshan relic sites is a typical earthen sites located at humid circumstances. For public exhibitions and research purposes, a few chemical grouts were recommended for solidification and conservation of the excavated historical heritage sites. In this paper, the potential application of methyl acrylic acid resin for strengthening Tianluoshan relic soils were evaluated by a series of unconfined compression tests considering the influence of curing condition, curing time, and water content. The results showed that methyl acrylic acid resin can effectively improve the strength of Tianluoshan relic soils.

scholarly journals Prediction of Unconfined Compression Strength for Saline-Alkaline Soils Mixed with Cement and Wheat Straw

2020 ◽  
Vol 2020 ◽  
pp. 1-14
Author(s):  
Guoqi Xing ◽  
Changjiang Liu ◽  
Wei Xuan ◽  
Yueyue Pan ◽  
Bing Zhang ◽  
...  
Keyword(s):  
Wheat Straw ◽  
Compression Strength ◽  
Cement Content ◽  
Test Results ◽  
Alkaline Soils ◽  
Unconfined Compression Strength ◽  
Compression Tests ◽  
Unconfined Compression ◽  
Brittle Behavior ◽  
Saline Alkaline Soils

A series of unconfined compression tests were performed to investigate the influence of wheat straws on the unconfined compression strength for saline-alkaline soils and saline-alkaline soils mixed with cement. In unconfined compression tests, 20 groups of soil specimens were prepared at five different percentages of wheat straws content (i.e., 0.0%, 0.1%, 0.15%, 0.2%, and 0.25% by weight of saline-alkaline soils) and four different percentages of cement content (i.e., 0%, 3%, 6%, and 9% by weight of saline-alkaline soils), and unconfined compression tests were carried out after 3-, 7-, 14-, 28-, and 56-day curing periods. Test results indicated that the inclusion of wheat straws within saline-alkaline soils and saline-alkaline soils mixed with cement leads to an increase in the unconfined compressive strength of specimens and also changed the brittle behavior to a more ductile one for specimens. In addition, based on the results from unconfined compression tests, a formula for predicting the unconfined compression strength of specimens related to cement content, wheat straw content, curing periods, etc., was determined, and comparing with the results from unconfined compression tests, it had higher precision in predicting the unconfined compression strength of specimens.

scholarly journals Analysis of shear strength of the expansive soil stabilized with kaolin at various soaking times

2021 ◽  
Vol 878 (1) ◽  
pp. 012050
Author(s):  
R P W Gultom ◽  
R M Simanjuntak
Keyword(s):  
Shear Strength ◽  
Compression Strength ◽  
Soil Stabilization ◽  
Expansive Soil ◽  
Expansive Clay ◽  
Unconfined Compression Strength ◽  
Unconfined Compression ◽  
Stabilized Soil ◽  
Time Variations ◽  
Dry Soil

Abstract Expansive clay soils are high shrinkage soils that have low bearing capacity. So an effort is needed to reduce the nature of its swelling. One effort that can be done is the method of soil stabilization, where the soil is mixed with materials that can reduce soil swelling and increase the shear strength of the soil. One of the materials that can be used is kaolin powder. Kaolin is a stabilizing agent found in nature so it is easy to obtain. The purpose of this research is to analyse the decrease of expansive soil swelling and the value of its unconfined compression strength at various soaking times. The test was carried out by mixing 9% kaolin powder against dry soil weight. The stabilized soils were then compacted as samples to be soaked with time variations of 0 days, 3 days, 7 days, 10 days, and 14 days. The results of the test after soaking 14 days is a decrease of the stabilized soil swelling value up to 67.78%. The unconfined compression strength is increase up to 77.28% compared to its natural condition.

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