Comparison on properties of cement-stabilised gravel prepared by different laboratory compaction methods

Ji, Xiaoping; Hou, Yueqin; Li, Xianghang; Wang, Tao

doi:10.1080/14680629.2017.1423105

Cited by 29 publications

(10 citation statements)

References 16 publications

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“…However, VVCM is another compaction method which can better simulate the field compaction, and the correlation of mechanical strength between indoor specimens produced using VVCM and field core samples (FCSs) is as high as 90% [29][30][31]. Consequently, VVCM has attracted increasing attention in recent years, and it has been applied to macadam stabilized with inorganic binder, asphalt mixture, and graded macadam [32][33][34][35], while the application of VVCM in loess has rarely been studied. erefore, it is of great significance to investigate the mechanical properties of loess compacted using different compaction method.…”

Section: Introductionmentioning

confidence: 99%

Comparison of Mechanical Properties of Cement‐Stabilized Loess Produced Using Different Compaction Methods

Jiang

Yuan

et al. 2020

Advances in Materials Science and Engineering

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Mechanical properties are important indexes to evaluate the improvement effect and engineering performance of cement-stabilized loess (CSL). This paper presents a comparison of the mechanical properties of CSL compacted using hammer quasi-static compaction method (QSCM) and vertical vibration compaction method (VVCM). The compaction properties, unconfined compressive strength (UCS), splitting strength (SPS), and resilient modulus (RM) of the laboratory-compacted CSL using VVCM and QSCM are tested and compared. Furthermore, the effects of compaction method, cement content, compaction coefficient, and curing time of the CSL specimens are investigated. In addition, field measurements are carried out to validate the laboratory investigations. The results show that the laboratory-compacted CSL using VVCM has a larger dry density and smaller optimum water content than that using QSCM. And the compaction method has a great influence on the mechanical strength of CSL. The UCS, SPS, and RM of the specimen produced using VVCM are averagely 1.17 times, 1.49 times, and 1.17 times that of CSL produced using QSCM, respectively, and the UCS, SPS, and RM of the specimens produced using these two methods increase linearly as the cement content and compaction coefficient increase, while the mechanical strength growth curve experiences three periods of increasing sharply, increasing slowly, and stabilizing with the curing time increased. Moreover, the results also show that the mechanical properties of laboratory-compacted CSL using VVCM have a better correlation of 83.8% with the field core samples.

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Section: Introductionmentioning

confidence: 99%

Comparison of Mechanical Properties of Cement‐Stabilized Loess Produced Using Different Compaction Methods

Jiang

Yuan

et al. 2020

Advances in Materials Science and Engineering

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“…The reason for this phenomenon is that the particles are prone to becoming crushed to smaller particles as the number of compactions increases. The exciting force of VCM makes the relative movement between the particles is smaller than the SPCM and to achieve a denser effect; thence, the fragmentation of particles is relatively slight [22].…”

Section: Gradation Variationmentioning

confidence: 99%

“…To overcome the shortcomings of these traditional methods, Chinese scholars have developed the laboratory vibration compaction method (VCM). The VCM is performed via the vertical vibration test equipment (VVTE), which can simulate the vibration and oscillation of a vibratory roller [21,22]. The VCM is mainly used for the semi-rigid mixtures, such as cement stabilized gravel.…”

Section: Introductionmentioning

confidence: 99%

Characterization of Properties of Soil–Rock Mixture Prepared by the Laboratory Vibration Compaction Method

Dai³

et al. 2021

Sustainability

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This paper presents a study of the properties of soil–rock mixtures (SRM) prepared by the vibration compaction method. First, the results of laboratory experiments and field tests are compared to determine the reasonable parameters of the vibration compaction method (VCM) for soil–rock mixtures. The compaction characteristics, CBR, and resilient modulus of the laboratory-prepared soil–rock mixtures by the static pressure compaction method (SPCM) and vibration compaction method are compared. The effects of the soil to rock ratio and the maximum particle size and gradation on the compaction characteristic, resilient modulus and CBR of soil–rock mixtures prepared by the vibration compaction method are investigated. Finally, field measurements are subsequently conducted to validate the laboratory investigations. The results show that the reasonable vibration frequency, exciting force, and static surface pressure of the vibration compactor for soil–rock mixtures are recommended as 25 Hz, 5.3 kN, and 154.0~163.2 kPa, respectively. Soil–rock mixtures prepared by vibration compaction method has smaller optimum water content and gradation variation and larger density than specimens prepared by the static pressure compaction method, and the CBR and resilient modulus are 1.46 ± 0.02 and 1.16 ± 0.03 times those of specimens prepared by the static pressure compaction method, respectively. The ratio of soil to rock, followed by the maximum particle size, lead obvious influences on the properties of soil–rock mixtures. Moreover, the results show that the CBR and resilient modulus of soil–rock mixtures prepared by vibration compaction method have a correlation of 86.9% and 89.1% with the field tests, respectively, which is higher than the static pressure compaction method.

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“…The VVTE parameters are the most important VVCM information ( Figure 1 ) [ 18 , 21 , 22 , 23 , 26 , 27 , 28 ]. Its working parameters include a vibration frequency of 35 Hz, nominal amplitude of 1.2 mm, vibration force of 7.6 kN, and upper- and lower-system weights of 120 and 180 kg, respectively.…”

Section: Experimental Designmentioning

confidence: 99%

“…The optimal moisture content determined by the HCTM is too large, and the maximum dry density too small; the correlation between the strength of specimens formed by SPCM and the actual core strength of the road surface is less than 70% [18]. To solve these problems, Jiang et al studied the effects of compaction method on the mechanical properties of inorganic binder-stabilized materials [18][19][20][21][22][23]. They verified the reliability of VVCM in the compaction of cement-stabilized materials in the laboratory by optimizing the working parameters of the vertical vibration test equipment (VVTE).…”

Section: Introductionmentioning

confidence: 99%

Cement-Modified Loess Base for Intercity Railways: Mechanical Strength and Influencing Factors Based on the Vertical Vibration Compaction Method

Jiang

et al. 2020

Materials

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Cement-modified loess has been used in the recent construction of an intercity high-speed railway in Xi’an, China. This paper studies the mechanical strength of cement-modified loess (CML) compacted by the vertical vibration compaction method (VVCM). First, the reliability of VVCM in compacting CML is evaluated, and then the effects of cement content, compaction coefficient, and curing time on the mechanical strength of CML are analyzed, establishing a strength prediction model. The results show that the correlation of mechanical strength between the CML specimens prepared by VVCM in the laboratory and the core specimens collected on site is as high as 83.8%. The mechanical strength of CML initially show linear growth with increasing cement content and compaction coefficient. The initial growth in CML mechanical strength is followed by a later period, with mechanical strength growth slowing after 28 days. The mechanical strength growth properties of the CML can be accurately predicted via established strength growth equations. The results of this study can guide the design and construction of CML subgrade.

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Comparison on properties of cement-stabilised gravel prepared by different laboratory compaction methods

Cited by 29 publications

References 16 publications

Comparison of Mechanical Properties of Cement‐Stabilized Loess Produced Using Different Compaction Methods

Comparison of Mechanical Properties of Cement‐Stabilized Loess Produced Using Different Compaction Methods

Characterization of Properties of Soil–Rock Mixture Prepared by the Laboratory Vibration Compaction Method

Cement-Modified Loess Base for Intercity Railways: Mechanical Strength and Influencing Factors Based on the Vertical Vibration Compaction Method

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