Effect of cementation level on performance of rubberized cement-stabilized aggregate mixtures

Farhan, Ahmed Hilal; Dawson, Andrew; Thom, Nick

doi:10.1016/j.matdes.2016.02.059

Cited by 35 publications

(15 citation statements)

References 26 publications

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“…One effective means to improve the performance of CSG is to modify the cementing material. The use of emulsified asphalt (EA) to improve the material’s flexibility is one area of research that has received considerable attention [ 15 , 16 ]. Miljković and Radenberg studied the effect of EA on the asphalt mixture performance and analyzed the fracture mechanism [ 17 , 18 ].…”

Section: Introductionmentioning

confidence: 99%

Influence of Emulsified Asphalt on the Mechanical Property and Microstructure of Cement-Stabilized Gravel under Freezing and Thawing Cycle Conditions

et al. 2017

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Properties of cement-stabilized gravel modified by emulsified asphalt under freezing and thawing cycle conditions were investigated by adjusting the dosage of cement. Mercury intrusion porosimetry (MIP) and Scanning electron microscopy (SEM) were introduced to analyze the influential mechanism. The results indicate that cement emulsified asphalt stabilized gravel with 5 wt % of cement performed well in both mechanics and frost-resistance. Although the addition of emulsified asphalt would lead to a partial decrease of strength, it can extend the process of strength loss and improve the freezing resistance. The main reason for this is that the permeability can be improved by the filling effects of emulsified asphalt. The frost-heave stress caused by the phase transition of water can also be remitted by emulsified asphalt, the elasticity modulus of which is much lower than the matrix. The generating speed of the micro crack can also be slowed down by emulsified asphalt.

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Section: Introductionmentioning

confidence: 99%

Influence of Emulsified Asphalt on the Mechanical Property and Microstructure of Cement-Stabilized Gravel under Freezing and Thawing Cycle Conditions

et al. 2017

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“…The effect of cement content on the UCS is displayed in Figure 3. The overall trend is a rise in the UCS value of the SCSM as the cement content increases, which is because the enhanced effect of cement on the strength of the material and the bonding force between the particles is enhanced by the increase in hydrated products as expected [26]. In addition, based on the slope of the curve, it can be seen that at the same age, the increase rate of the UCS is very low when the cement content adds from 3.5 to 4.0%, but the growth rate becomes significantly higher as the cement content increases from 4.0 to 4.5%.…”

Section: Influence Of Cement Contentmentioning

confidence: 66%

“…For instance, when the cement content increases from 3.5 to 4.0% at 60 days of curing, the strength of the SCSM rises by approximately 0.07 MPa, and the increase from 4.0 to 4.5% results in an approximate 0.6 MPa rise. However, the experimental results of Farhan et al [26] show that the development rate of the UCS of a traditional CSM is almost proportional to the cement content. The reason for the above difference may be the large porosity of the sandstone.…”

Section: Influence Of Cement Contentmentioning

confidence: 96%

Mechanical Properties of Sandstone Cement-Stabilized Macadam

Pan

et al. 2019

Applied Sciences

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Application of sandstone in cement-stabilized macadam (CSM) is an effective way to utilize sandstone. To determine the feasibility of using sandstone as a CSM aggregate, a series of experimental investigations, such as unconfined compressive strength (UCS) tests, Brazilian splitting tests and freeze-thaw cycle tests, were conducted on sandstone cement-stabilized macadam (SCSM). Three mixed variables, covering the cement content, aggregate type and curing period, were set as influence factors. The testing results indicated that the UCS, indirect tensile strength (ITS) and frost resistance property of the test-pieces increased with cement content and curing age. Considering the asphalt pavement design specifications for China, the UCS and ITS values of the SCSM complied with the requirements of light traffic road construction before freeze-thaw cycles. However, the SCSM subjected to freezing and thawing meets the requirements only when the cement content is 4.5%. Therefore, it is noteworthy that CSM containing sandstone aggregates should be applied with caution in cold region because of insufficient freeze resistance.

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“…This has caused an increasing interest in the usage of recycled rubber (in powder or shredded form) from waste tires in combination with other materials such as cement, soil, asphalt,etc. for geotechnical applications [1][2][3]. An advantage of using rubber as an additive is its properties viz.…”

Section: Introductionmentioning

confidence: 99%

A numerical and experimental study of sand-rubber mixtures subjected to oedometric compression

Badarayani¹,

Richard²,

Cazacliu³

et al. 2019

E3S Web Conf.

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The stockpiling of waste tires at landfill sites has become a nuisance for the society. One of the alternatives could be converting the recycled rubber into powdered form and mixing it with soil to use it as the backfill of the retaining structures. This paper is based on the study of such sand-rubber mixtures. In this work, Discrete Element (DEM) simulations were employed to study the mechanical response of sand-rubber mixtures with respect to a column of grains enclosed within a rigid cylindrical confinement, and subjected to an oedometric compression by the fixed velocity displacement of one of the horizontal walls. Further, experimental analysis was also carried out by using a uniaxial load cell to load the sand-rubber mixtures under compression. Different initial packings of sand-rubber mixture were prepared by varying: (a) the packing volume fraction and (b) the volume fraction of rubber. The mechanical response at small strains was studied for these sand-rubber packings. The mixture behavior was observed to be more sand-dominant or rubber-dominant depending on the rubber fraction and the mixture quality. Moreover, variation in the initial volume fraction of the packing also caused a difference in the load bearing of the packings for a given strain and a given rubber fraction.

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Effect of cementation level on performance of rubberized cement-stabilized aggregate mixtures

Cited by 35 publications

References 26 publications

Influence of Emulsified Asphalt on the Mechanical Property and Microstructure of Cement-Stabilized Gravel under Freezing and Thawing Cycle Conditions

Influence of Emulsified Asphalt on the Mechanical Property and Microstructure of Cement-Stabilized Gravel under Freezing and Thawing Cycle Conditions

Mechanical Properties of Sandstone Cement-Stabilized Macadam

A numerical and experimental study of sand-rubber mixtures subjected to oedometric compression

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