Characterising the resilient behaviour of pavement subgrade with construction and demolition waste under Freeze–Thaw cycles

Zhang, Junhui; Zhang, Anshun; Huang, Chao; Yu, Huayang; Zhou, Chao

doi:10.1016/j.jclepro.2021.126702

Cited by 60 publications

(22 citation statements)

References 40 publications

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“…e relative difference value of the Earth pressure coefficient calculated based on each strength criterion essentially reflects the contribution of intermediate principal stress to strength and also clearly reflects the influence of each strength criterion on Earth pressure. For test parameters fitting, R 2 (the correlation coefficient) is usually applied to describe the correlation of parameters [25][26][27]. For the theoretical analysis in this paper, we assumed the same soil parameters and the calculation results of each strength criterion and the Mohr-Coulomb strength criterion could reflect the difference clearly.…”

Section: Analysis Of the Active And Passive Earth Pressure Coefficients Of Cohesionless Soil Based On Each Strength Criterionmentioning

confidence: 99%

Earth Pressure of Three‐Dimensional Stress States under Different Strength Criteria and Its Application

Zhang

Jin

Fan

et al. 2021

Advances in Materials Science and Engineering

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To solve the Earth pressure problems in practical engineering, such as retaining walls and foundation pits, we derive active and passive Earth pressure formulas in accordance with the relationship between intermediate principal stress and excavation under three-dimensional stress states. The formulas are derived on the basis of the Mohr–Coulomb, spatially mobilized plane (SMP), σ 3 SMP, Lade–Duncan, axisymmetric compression- (AC-) SMP strength, and generalized Mises (Gen-Mises) criteria and then extended to clay. We also compare the calculated Earth pressure with the measured data. Results indicate that the Earth pressure considering medium principal stress contribution under a three-dimensional stress state is consistent with the actual engineering. The calculated active Earth pressure in the Mohr–Coulomb strength criterion is larger, and the passive Earth pressure is smaller than the practical one because the intermediate principal stress effect is not considered. The calculated results of the SMP, σ 3 SMP, Lade–Duncan, AC-SMP strength, and Gen-Mises criteria are close to the measured data, among which the result of the Gen-Mises criterion is closer. The Earth pressure calculated using the Lade–Duncan criterion is no longer appropriate to describe the Earth pressure under medium principal stress condition in this study. The results of this study have theoretical significance for retaining structure design under a three-dimensional stress state.

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Section: Analysis Of the Active And Passive Earth Pressure Coefficients Of Cohesionless Soil Based On Each Strength Criterionmentioning

confidence: 99%

Earth Pressure of Three‐Dimensional Stress States under Different Strength Criteria and Its Application

Zhang

Jin

Fan

et al. 2021

Advances in Materials Science and Engineering

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“… Zhang et al (2020) used recycling construction and demolition wastes (CDW) in subgrade materials, which is a promising method to process these wastes, with significant environmental and economic benefits. Zhange et al ( Zhang et al, 2021a , Zhang et al, 2021b ) also investigated the performance of cement stabilized recycled mixture containing recycled concrete aggregate (RCA) and crushed brick (RCB), for highways applications. Moreover, Zhange et al (2021) conducted a series of laboratory tests to study the variation law of the dynamic resilient modulus of recycling construction and demolition (C&D) waste, used as fillers in pavement subgrade, under repeated freeze-thaw cycles and establish a reasonable performance prediction model.…”

Section: Introductionmentioning

confidence: 99%

Assessment of the reuse of Covid-19 healthy personal protective materials in enhancing geotechnical properties of Najran's soil for road construction: Numerical and experimental study

Abdullah

Aal

2021

Journal of Cleaner Production

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The COVID-19 pandemic has not only caused a global health crisis, but it has also had significant environmental and human consequences. During the COVID-19 pandemic, this study focused on emerging challenges in managing healthy personal protective materials (HPPM) in Kingdom of Saudi Arabia, using silty sand (SM) soil as an example since it covers large areas in KSA and in the whole world. The main objective of this paper is to find a novel way to minimize pandemic-related waste by using HPPM as waste materials in road construction. For the first time, a series of experiments was conducted on a mixture of different percentages of shredded HPPM (0, 0.5, 1 and 2%) added to the silty sand (SM) soil for road applications, including soil classification according to the USCS, modified compaction, UCS, UPV, and CBR. In addition, a numerical simulation was performed using geotechnical-based software Plaxis 3D to study the performance of the soil-HPPM mix as a subbase layer in the paving structure under heavy traffic loading. The modified compaction test results show that there is an increase in the optimum moisture content with increasing the HPPM contents from 0.5% to 1% and 2%. However, a reduction in the maximum dry density is observed. The values of dry density and water content at 0%, 0.5%, 1% and 2% pf HPPM are 2.045, 1.98, 1.86 and 1.8 g/cm 3 and 7.65% 8%, 8.5% and 9.5%, respectively. The soaked CBR values at 0, 0.5, 1 and 2% HPPM are 23, 30, 8, 2% with the maximum value attained with the addition of 0.5% HPPM. The results of UCS were with the same percentages of HPPM 430, 450, 430 and 415 kPa, respectively, with the maximum value attained with 0.5% HPPM addition as well. In contrast, the values of UVP at 0%, 0.5%, 1% and 2% are 978.5, 680.3, 489.4 and 323.6 m/s, respectively, confirming the trends obtained by modified compaction test results. The simulation results confirm this conclusion that the soil-HPPM mix show a superior performance when used as a subbase layer and reduced vertical displacement by a percentage of 11% compared to the normal subbase material. By eliminating HPPM especially facemasks from the landfill lifecycle, incorporating them into high quality construction material production has the potential to deliver significant environmental benefits.

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“…Cui et al [25] validated and compared the feasibility of the Topp and Ledieu models through laboratory and in situ tests. e existing calibration model is relatively complex, and the accuracy of the test results is influenced by other components in the soil [26]. Moreover, the moisture of the subgrade soil evaporates violently because of the perennial high temperature and heavy rainfall in southern China [27].…”

Section: Introductionmentioning

confidence: 99%

Multifactor Analysis of Calibration and Service Quality of the Soil Moisture Sensor Applied in Subgrade Engineering

Xiao¹,

Bai²,

Wang³

2021

Advances in Materials Science and Engineering

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The soil is an important natural resource, and its moisture status plays a key role in the strength and stability of the soil structure. In civil industries including the agriculture engineering and the forestry engineering, moisture sensors are widely used to test and monitor the engineering properties and long-term service performance of soil. The influence of multiple factors on the quality and the accuracy of the soil moisture sensor should be taken into account. Both laboratory and field tests were performed by the time-domain reflectometry (TDR) method. The soil dielectric constant and magnetic permeability under different moisture contents, different temperatures, and different dry densities were comprehensively evaluated. At the same time, the sensitive factors in the service performance of the TDR sensor have been revealed by the real state of tested soil samples. Based on the testing principle of TDR, a calibration calculation model has been developed to evaluate accurately the moisture content of the subgrade slope. The results show that both the moisture content and the dry density had a significant influence on the dielectric constant and the magnetic permeability of soil. The developed calculation model has a good fitting effect and stability. Through the model, the influence of moisture content and temperature on the soil dielectric constant has been analyzed, and the fitting goodness is above 90%. After half a year of settlement, the soil was gradually drained and consolidated, and the moisture content of the subgrade section gradually decreased. It verified that the monitoring method determined by the laboratory calibration test was effective and accurate.

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Characterising the resilient behaviour of pavement subgrade with construction and demolition waste under Freeze–Thaw cycles

Cited by 60 publications

References 40 publications

Earth Pressure of Three‐Dimensional Stress States under Different Strength Criteria and Its Application

Earth Pressure of Three‐Dimensional Stress States under Different Strength Criteria and Its Application

Assessment of the reuse of Covid-19 healthy personal protective materials in enhancing geotechnical properties of Najran's soil for road construction: Numerical and experimental study

Multifactor Analysis of Calibration and Service Quality of the Soil Moisture Sensor Applied in Subgrade Engineering

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