Evaluation on Strength Properties of Lime–Slag Stabilized Loess as Pavement Base Material

Jia, Liang; Zhang, Li; Guo, Jianchun; Yao, Kai; Lim, Sin Mei; Li, Bin; Xu, Hui

doi:10.3390/su11154099

Cited by 14 publications

(4 citation statements)

References 62 publications

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“…Cement and lime are generally adopted to promote various kinds of soil solidification, such as dredged clay [1], seashore soft clay [2], loess [3,4], coastal clay [5], subgrade clay [6] and marine clay [7]. Due to the advantages of low cost and construction feasibility, cementtreated clay is widely used in ground improvement, pavement engineering and other engineering applications [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Unconfined Compressive Properties of Fiber-Stabilized Coastal Cement Clay Subjected to Freeze–Thaw Cycles

Zhu

Zhang

et al. 2021

JMSE

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This study aimed to investigate the feasibility of using polypropylene fiber-cement-stabilized coastal clay as base-course material or foundation material for city sustainable development by assessing its mechanical performance. The influence of the number of freeze–thaw cycles and curing ages on the mechanical properties of ordinary cemented clay (OCC) and polypropylene fiber-cemented clay (PCC) was investigated by using unconfined compressive test. The experimental results show that the addition of fiber with 1% content can increase the strength as well as the ductility of cemented clay by 12.5% and 15.6%, respectively. The strength of PCC and OCC at 22d age was 1.5 times than at 7d age. Under differently timed freeze–thaw cycles, the mechanical performance of PCC is improved, and, better than that, OCC improves by 11.8% in strength, 16.5% in strain and by 5% in degree of damage, indicating that fiber can improve the freeze–thaw resistance of cemented clay. The frost resistance of PCC and OCC increases with the increase in curing age. Finally, the variation of strength of OCC was explained through the change of micro-structure while the strength enhancing mechanism of polypropylene fiber for cemented clay was also revealed.

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Section: Introductionmentioning

confidence: 99%

Unconfined Compressive Properties of Fiber-Stabilized Coastal Cement Clay Subjected to Freeze–Thaw Cycles

Zhu

Zhang

et al. 2021

JMSE

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“…In particular, the specifications were still attained with a slag content of 35%. Liang et al [ 18 ] studied the effects of lime dosage, lime to slag ratio, porosity, and curing time on the unconfined compressive strength of a pavement base. The strength increased rapidly during the first 7 days when all of the parameters except porosity increased.…”

Section: Introductionmentioning

confidence: 99%

Study on Mechanical and Frost Resistance Properties of Slag and Macadam Stabilized with Cement and Fly Ash

Yan

Tian

et al. 2021

Materials

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China is a large country in terms of coal production and consumption. The fly ash and slag produced by thermal power plants pose a great threat to the environment. To reduce the adverse effects of fly ash and slag on the environment, a mixture of slag and macadam stabilized with cement and fly ash was prepared as pavement base material. Compaction tests, unconfined compressive strength tests, splitting strength tests, frost resistance tests, and ultrasonic tests were performed on the mixture. The results show that with an increase in slag replacement rate, the unconfined compressive strength and splitting strength decreased. However, the adverse influence of the slag replacement rate on unconfined compressive strength and splitting strength of specimens gradually weakened with increasing curing time. The frost resistance of the mixture first increased and then decreased with an increase in the slag replacement rate. When cement content was 5% and the slag replacement rate was 50%, the frost resistance of the mixture was the best. Regression analysis of the ultrasonic test showed that the ultrasonic test can effectively characterize the strength of the mixture and the internal damage degree under freeze–thaw cycles. In conclusion, the slag replacement rate of the mixture is recommended to be ~50%, which has preferable mechanical and frost resistance performance.

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“…The main reactive product observed in the alkali activation of slag, is a hydrated calcium-silicate (C-S-H) gel with low C/S ratio [45,46], known to enhance the setting and strength properties of geopolymer [45,46]. Some research has been carried out on loess geopolymers [3,[47][48][49][50]. Although loess can be used in the production of geopolymer, its activation of the geopolymerization process presents some difficulties.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of alkali-activated loess and its application as protective coating

Dassekpo

Feng

et al. 2021

Construction and Building Materials

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Evaluation on Strength Properties of Lime–Slag Stabilized Loess as Pavement Base Material

Cited by 14 publications

References 62 publications

Unconfined Compressive Properties of Fiber-Stabilized Coastal Cement Clay Subjected to Freeze–Thaw Cycles

Unconfined Compressive Properties of Fiber-Stabilized Coastal Cement Clay Subjected to Freeze–Thaw Cycles

Study on Mechanical and Frost Resistance Properties of Slag and Macadam Stabilized with Cement and Fly Ash

Synthesis and characterization of alkali-activated loess and its application as protective coating

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