Moisture sensitivity and mechanical performance assessment of warm mix asphalt containing by-product steel slag

Amelian, Soroosh; Manian, Mehdi; Abtahi, Sayyed Mahdi; Goli, Ahmad

doi:10.1016/j.jclepro.2017.12.120

Cited by 76 publications

(27 citation statements)

References 15 publications

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“…In addition, the minimum number of data more than 30 for each sample could help that the sample set would be approximately normal [37][38][39][40][41]. Such data sets would be suitable to conduct statistical analysis with reliable results [42][43][44][45][46][47]. Since there were 5 borrow pits in the case of this research, 200 (i.e., 5 × 40) samples for each scenario of each model were finally collected.…”

Section: Discussionmentioning

confidence: 99%

A Statistical-based Approach to Evaluate the Production of Crawler-type Dozer in Construction Projects

Rafsanjani¹,

Gholipour²,

Xue³

2018

AJCEA

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Estimating the actual production rate of construction machinery which clearly differs from nominal production provided by machinery manufacturers always is a critical challenge in construction projects execution. Studies indicate that true estimation of actual production is a key element in estimating the time and cost required to terminate construction operations. However, current literature shows that it is still a quite challenging to estimate actual production. In particular, there are various independent parameters that affect the actual production rate. Understanding the role and importance of each parameter could lead to an accurate estimation for production rates. To this end, this paper presents a statistical-based approach to find the discrepancies between the nominal and actual production rates of crawler-type dozers and to understand how various parameters could affects the actual production rates. The data for the actual production of machine were records from productivity measurement of 39 dozers. Working condition, type of materials, and ground slope are three main independent parameters considered and evaluated for each machine. The results obtained from statistical analyses on the data and a comparison between these results with the data provided by Caterpillar and Komatsu manufacturers show a) the discrepancies between the actual and nominal hourly production, b) the effect of individual parameters on actual production, and c) the relationship between machinery working age and discrepancies. The findings of this study could be a unique help for project managers in planning of machinery and equipment in a project site.

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Section: Discussionmentioning

confidence: 99%

A Statistical-based Approach to Evaluate the Production of Crawler-type Dozer in Construction Projects

Rafsanjani¹,

Gholipour²,

Xue³

2018

AJCEA

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“…Studies have also been conducted on the application of steel slag in asphalt mixtures. The results of this research have shown that the use of steel slag could increase the strength of the mixture against moisture sensitivity [14][15], resistance to fatigue cracking [16], permanent deformation [15], and resistance to rutting and dynamic creep [17].…”

Section: Introductionmentioning

confidence: 89%

Influences of Surface Characteristics and Modified Asphalt Binders on Interface Shear Strength

Shafabakhsh

Ahmadi

2019

IJE

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Weak bonding between layers of pavement leads to damages on the composite pavement. Bonding plays an important role in the durability and maintenance of composite pavement layers. The present study evaluates the factors effective in bond strength of the interface between concrete and asphalt pavements. The factors considered for this purpose include steel slag percentage in the concrete pavement, different types of modified bitumen, and rates of tack-coat. To measure the bond properties, direct shear and shear fatigue tests were carried out. In addition, texture depth and abrasion resistance were used in accordance with EN 1338 standard to measure the roughness properties of concrete pavement. The test results showed that 50% replacement of steel slag with aggregate resulted in an increase in physical properties and texture depth of concrete pavement. Moreover, the results of the shear strength test of composite pavement revealed that the optimal rate of using tack-coat varies between 0.6 and 0.9 l/m 2 and depends on the type of tack-coat. Finally, a higher shear strength was obtained for crumb rubber bitumen containing hydrated lime compared to crumb rubber modified bitumen and control bitumen.

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“…In the last decades, steel slag has been analyzed in several studies: basic oxygen furnace (BOF) slag was integrated into a warm [ 13 , 14 ], porous [ 15 ] hot mix asphalt [ 16 ], stone mastic asphalt (SMA-BOF), dense-graded asphalt concrete (DGAC-BOF) [ 17 ] or used as the main constituent in hydraulic road binder [ 18 ]. The results showed that the addition of steel slag into asphalt mixtures had high resistance to permanent deformation and moisture-induced damage.…”

Section: Introductionmentioning

confidence: 99%

Use of Steel Slag as an Alternative to Aggregate and Filler in Road Pavements

et al. 2021

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Today the use of Construction and Demolition Materials (CDM) can be considered as a suitable solution for the construction or the rehabilitation of road pavements. In this context, it is central to minimizing waste production, favoring the reuse through new production cycles to replace virgin natural raw materials. As illustrated in this study, steel slag has mechanical properties that justify its use as aggregate in the manufacture of bituminous mixes. In road construction, their use is focused on the substitution of fine aggregate and filler in bituminous mixtures. Mechanical characterizations, Marshall stability and indirect tensile resilient modulus (ITSM) tests were used to evaluate the laboratory performance of the mixtures. The research aims are to provide the use of these materials for the construction of the entire road pavement structure; in this study authors used these materials both in the characterization of cementitious layers and in those with bituminous conglomerate. In both cases, the use of steel slag has favored an increase of stiffness in the mixtures.

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Moisture sensitivity and mechanical performance assessment of warm mix asphalt containing by-product steel slag

Cited by 76 publications

References 15 publications

A Statistical-based Approach to Evaluate the Production of Crawler-type Dozer in Construction Projects

A Statistical-based Approach to Evaluate the Production of Crawler-type Dozer in Construction Projects

Influences of Surface Characteristics and Modified Asphalt Binders on Interface Shear Strength

Use of Steel Slag as an Alternative to Aggregate and Filler in Road Pavements

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