Strength properties of an epoxy resin and cement-stabilized silty clay soil

Anagnostopoulos, Costas A.

doi:10.1016/j.clay.2015.07.007

Cited by 107 publications

(37 citation statements)

References 40 publications

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“…As a typical example of the chemical improvement method, cement soil is widely applied to various roadbed treatment projects due to its advantages of good integrity, strong water stability, and low cost [5][6][7][8][9]. However, a large number of tests show that, due to the defects of low tensile strength, large brittleness, and poor deformability, cement soil is not suitable for every kind of project [10][11][12][13]. In response to the above problems, many researchers have proposed a variety of improved methods based on different materials [14][15][16][17][18][19][20], and found that the use of fiber reinforcement technology as a method for improving the mechanical properties performed well in terms of soil improvement [21,22].…”

Section: Introductionmentioning

confidence: 99%

Investigation on the Triaxial Mechanical Characteristics of Cement-Treated Subgrade Soil Admixed with Polypropylene Fiber

et al. 2019

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In order to evaluate the improvement effect of fiber on the brittle failure of cement-treated subgrade soil, a series of triaxial unconsolidated undrained (UU) tests were carried out on samples of polypropylene fiber-cement-treated subgrade soil (PCS) with polypropylene fiber mass content of 0‰, 2‰, 4‰, 6‰, and 10‰. The results showed that, (1) the deviatoric stress-axial strain curve of PCS samples were all strain-softening curves. (2) For the same fiber mass content, the peak stress, residual stress, and strain at peak stress of PCS samples gradually increases with the increase in the confining pressure, while their brittleness index gradually decreases. (3) With the increase in confining pressure, compared with that of the 0‰ PCS sample, the increase in peak stress, residual stress, and strain at peak stress of 6‰ PCS sample were in the ranges of 24%–29%, 87%–110%, and 85%–120%, respectively. The decrease in the brittleness index and failure angle was 52%–79% and 16%, while the cohesion and internal friction angle increased by 25.9% and 7.4%, respectively. The results of this study indicate that it is feasible to modify cement subgrade soil with an appropriate amount of polypropylene fiber to mitigate its brittle failure.

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Section: Introductionmentioning

confidence: 99%

Investigation on the Triaxial Mechanical Characteristics of Cement-Treated Subgrade Soil Admixed with Polypropylene Fiber

et al. 2019

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“…There is an abundance of very fine natural sand known as dune sand mainly distributed in coastal rivers and desert areas [1,2]. It is quite difficult to applicate dune sand in civil engineering because of its features of poor gradation, low strength, looseness, ease of erosion, and the poor overall stability [3,4]. Furthermore, in some dredging and waterway regulation engineering such as bank protection and slope cutting, a considerable amount of dune sand has been generated.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on the Performance and Microstructure of Cementitious Materials Made with Dune Sand

Jiang

Zhou

Tao

et al. 2016

Advances in Materials Science and Engineering

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This paper presents the results of an investigation on the utilization of dune sand from waterway regulation engineering as the main raw materials to produce cementitious materials. The mechanical and durability properties of the cementitious materials were studied. Furthermore, a scanning electron microscope (SEM) and mercury intrusion porosimeter (MIP) were used to identify the microstructure of the specimens. The results show that the compressive and splitting tensile strength of cementitious materials can be improved due to the addition of ground granulated blast-furnace slag (GGBS) which mainly attributes to a better grain size distribution and pozzolanic effect compared to the specimen added cement alone. The specimen with the addition of suitable cement, GGBS, and gypsum shows low dry shrinkage and excellent abrasion resistance. Correspondingly the specimens present a lower porosity and total volume of pores at different curing ages. The SEM observation indicates that there are quite a lot of hydrate products such as calcium silicate hydrate gel in the matrix which verifies the formation of cementitious compounds. The results obtained suggest that there is potential in manufacturing cementitious material with dune sand in substitution of ordinary concrete to use in hydraulic engineering.

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“…It is generally very difficult to consolidate the sludge material in practice. To reduce the detrimental influence of moisture on the strength of specimens, cement was used as a material that, by consuming large quantities of water as a result of the pozzolanic reactions, results in a rise of the strength of the mixture [44]. Figure 4 shows the effect of CFA on the UCS of the cement-solidified mixtures.…”

Section: Testing Results and Discussionmentioning

confidence: 99%

Utilization of Electroplating Sludge as Subgrade Backfill Materials: Mechanical and Environmental Risk Evaluation

Zhang

Shi

Chen

et al. 2018

Advances in Civil Engineering

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The electroplating sludge may pose serious threat to human health and surrounding environment without safe treatment. This paper investigated the feasibility of using electroplating sludge as subgrade backfill materials, by evaluating the mechanical properties and environmental risk of the cement-coal fly ash solidified sludge. In this study, Portland cement and coal fly ash are used to solidify/stabilize the sludge. After curing for 7, 14, and 28 days, the stabilization/solidification sludge specimens were subject to a series of mechanical, leaching, and microcosmic tests. It was found that the compressive strength increased with the increase of cement content, curing time, and the cement replacement by coal fly ash besides water content. Among these factors, the impact of water content on the compressive strength is most noticeable. It was observed that the compressive strength declined by 87.1% when the water content increased from 0% to 10%. Besides, leaching tests showed that the amount of leaching heavy metals were under the standard limit. These results demonstrated utilization of electroplating sludge in subgrade backfill material may provide an alternative for the treatment of electroplating sludge.

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Strength properties of an epoxy resin and cement-stabilized silty clay soil

Cited by 107 publications

References 40 publications

Investigation on the Triaxial Mechanical Characteristics of Cement-Treated Subgrade Soil Admixed with Polypropylene Fiber

Investigation on the Triaxial Mechanical Characteristics of Cement-Treated Subgrade Soil Admixed with Polypropylene Fiber

Experimental Study on the Performance and Microstructure of Cementitious Materials Made with Dune Sand

Utilization of Electroplating Sludge as Subgrade Backfill Materials: Mechanical and Environmental Risk Evaluation

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