Freeze-thaw performance of a cement-treated expansive soil

Lu, Yang; Liu, Sihong; Yong-gan, Zhang; Li, Zhuo; Xu, Lei

doi:10.1016/j.coldregions.2019.102926

Cited by 139 publications

(47 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…During the thawing cycle, the volume of the specimens increased, and while undergoing the freezing, the volume shrinks. Due to this non-recurrence volume change, the density decrease and caused a tangible reduction in the strength 92 . The average loss in the UCS was observed 40%, 33.5% and 30.0% for the GC, MC, and SC, respectively.…”

Section: Effect Of Curing Methods On Ucs and Upv Of Treated And Untreamentioning

confidence: 99%

Effect of Curing on Micro-Physical Performance of Polypropylene Fiber Reinforced and Silica Fume stabilized Expansive Soil Under Freezing Thawing Cycles

Tiwari

Satyam

Singh

2020

Sci Rep

View full text Add to dashboard Cite

This study presents the micro-physical investigation of polypropylene (PP) fiber-reinforced, and silica fume (SF) stabilized expansive soil (BC) subgrade. The coupling effect of soil, PP fiber, and SF has been evaluated under the freezing-thawing (F-T) cycle to assess the durability of treated BC Soil. The curing method and duration staggeringly influence the strength of SF treated BC soil; therefore, three different curing method, i.e., moisture-controlled curing (MC), gunny bag curing (GC), and water submerged curing (SC) to a period of 7, 14, and 28 days were considered. The BC soil has been reinforced with 0.25%, 0.50%, and 1.00% PP fiber and stabilized with 2%, 4%, 6% and 8% SF. The physical, chemical, and microstructural properties were determined before and after 2,4,6,8,10 F-T cycles. With the increase in SF content, the unconfined compressive strength of the expansive soil has been increased due to the formation of Calcium Silicate Hydrate (C-S-H) gel. The chemically inert, hydrophobic, non-corrosive nature, and higher tensile strength of PP fiber, it has a higher potential to reinforce the BC soil for durability under tensile failure. This research confirms the possibility of incorporating SF and PP Fiber in road work applications, with significant environmental benefits.

show abstract

Section: Effect Of Curing Methods On Ucs and Upv Of Treated And Untreamentioning

confidence: 99%

Effect of Curing on Micro-Physical Performance of Polypropylene Fiber Reinforced and Silica Fume stabilized Expansive Soil Under Freezing Thawing Cycles

Tiwari

Satyam

Singh

2020

Sci Rep

View full text Add to dashboard Cite

show abstract

“…Six samples for each condition were prepared. Among them, three samples were for the measurement of volume changes and three samples were for unconfined compression tests, which significantly reduced the disturbance of the samples for mechanical tests [9,10,37]. All the samples were compacted to the same dry density of 1.60 mg/m 3 , which is on the basis of the field test results [23][24][25].…”

Section: Sample Preparationmentioning

confidence: 99%

“…On this basis, a large number of experimental studies have been conducted on volume changes and mechanical degradation of foundation soils below the canals under wetdry and freeze-thaw cycles [4][5][6][7][8]. Lu et al [9,10] investigated the freeze-thaw performance of the expansive soil taken from South-to-North Water Transfer Project by UCS and SEM tests. It is found that the internal porosity of expansive soil increased and became more uniform after several freezethaw cycles, which is more significant among the soils with a higher moisture content.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Volume Changes and Mechanical Properties of Expansive Mudstone below Canals under Wet‐Dry/Wet‐Dry‐Freeze‐Thaw Cycles

Zhu

Huang

Song

et al. 2021

Advances in Civil Engineering

View full text Add to dashboard Cite

The complex environment in northern China is the main reason for degradation of expansive mudstone below the canals, which resulted in instability and damage of canal slopes. In this study, a serial of laboratory tests was conducted to explore the volume changes and mechanical behaviors of expansive mudstone below the canals in Xinjiang. The experimental program includes wet-dry (WD) and wet-dry-freeze-thaw (WDFT) tests, volume measurement, and unconfined compression tests. The test results show that during the WD cycles, the volume changes of expansive mudstones with a higher dry range would be more significant. The freeze-thaw process in the WDFT cycles resulted in a decrease of volume change ranges when the expansive mudstones had a relatively smaller dry range and a slight increase of volume change ranges when the expansive mudstones had a relatively larger dry range. In the meantime, the stress-strain relationships of expansive mudstones with different dry ranges all presented strain softening under the cycles of WD or WDFT. The first cycle resulted in a significant decrease of failure strength. After seven WD/WDFT cycles, the failure strength of expansive mudstones with different dry ranges decreased by 37.2%∼59.1%. In addition, the freeze-thaw process in the WDFT cycles promoted the softening of the stress-strain relationships and aggravated the failure strength attenuation of expansive mudstones. Through this study, we expect to provide a preliminary basis for the construction and maintenance of expansive mudstone canals in Xinjiang.

show abstract

“…e contribution of jute fibers on enhancing strength parameters is identified [19]. Based on experimental tests, Lu et al [20] explored freeze-thaw performance of cement-treated expansive soils. It is found that cement-treated expansive soils become less sensitive to moisture.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Relationship between Free Load Swelling Rate and Water Content of Medium Expansive Soil

Cheng¹,

Yang

Wei³

et al. 2021

Advances in Civil Engineering

View full text Add to dashboard Cite

Expansive soil has the property of water swelling, which is related not only to the hydrophilic mineral composition of soil particles and the microstructure of soil, but also to the initial moisture content, dry density, and overburden condition of soil. Based on the typical expansive soil in a certain area, the samples were sampled and remodeled at the site. Extensive experimental tests were conducted to investigate the relationship between the hygroscopic expansion rate and the water content of the expansive soil under different initial moisture content, dry density, and free load. The results showed that, under the condition of natural initial water content and dry density, although the hygroscopic expansion rate of the medium expansive soil was nonlinear with the subsequent water content, in the range of large water content (within about 50%), the expansive soil swelled linearly. There was a linear relationship between the rate and the water content. With the increase of the initial water content, the hygroscopic expansion rate and expansion rate of the expansive soil decreased. With the increase of the dry density, the hygroscopic expansion rate and the expansion rate of the expansive soil increased. The water absorption performance did not decrease, and the soil continued to maintain the previous moisture absorption rate and expansion rate after the soil reached saturation, while after the water content reached 1.5∼2.0 times the saturated water content, the soil moisture absorption expansion rate gradually decreased until it finally stabilized. The slope k of the expansion rate increased with the initial dry density and decreased with the initial moisture content. As dry density was increased, the slope k was increased at an increased rate. Moreover, as the initial moisture content was decreased, the slope k was increased at an increased rate.

show abstract

Freeze-thaw performance of a cement-treated expansive soil

Cited by 139 publications

References 36 publications

Effect of Curing on Micro-Physical Performance of Polypropylene Fiber Reinforced and Silica Fume stabilized Expansive Soil Under Freezing Thawing Cycles

Effect of Curing on Micro-Physical Performance of Polypropylene Fiber Reinforced and Silica Fume stabilized Expansive Soil Under Freezing Thawing Cycles

Volume Changes and Mechanical Properties of Expansive Mudstone below Canals under Wet‐Dry/Wet‐Dry‐Freeze‐Thaw Cycles

Experimental Study on Relationship between Free Load Swelling Rate and Water Content of Medium Expansive Soil

Contact Info

Product

Resources

About