Technical Evaluation of Using Grouting For Producing Semi-Flexible Asphalt Concrete Mixtures.

Al-Taher, Metwally G.; Mohamady, Ahmed; Attia, Mohamed; Shalaby, M.Sh.

doi:10.21608/bfemu.2020.102455

Cited by 3 publications

(6 citation statements)

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“…The coarse gradation can provide the porous mixture's required properties to facilitate the injection material's penetration [15,17]. During the review of previous studies, it was noted that two types of gradients were used in the production of the porous asphalt mixture, the first containing a more significant number of fine sieves, which are less than 4.75 mm [34] and the second type was used a high percentage of coarse aggregate [28]. Figures 2 and 3 show these two types, respectively, from previous studies.…”

Section: Aggregate Gradation and Blendingmentioning

confidence: 99%

“…SFP HMA Al-Taher et al [28] 6861 Ib 2147 Ib Bharath et al [24] 114.7 kN 17.3 kN Huo et al [53] 29.52 kN -Hao et al [54] 17.12 kN -Jatoi et al [55] 44.91 KN 14 KN…”

Section: Referencementioning

confidence: 99%

“…Reference SFP HMA Bharath et al [24] 6 2.2 Al-Taher et al [28] 556 psi 165 psi Wang and Hong [56] 4.61-5.41 1.7-3.8 Hu et al [57] 5.68 2.65…”

Section: Table4: Different Compressive Strength Test Values From Prev...mentioning

confidence: 99%

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Semi-Flexible Pavement: A Review of Design and Performance Evaluation

Abdulsahib,

Hilal,

Fattah

2023

E3S Web Conf.

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It is known to researchers in the field of road construction and development. Three types of pavement are rigid, flexible, and composite paving. The composite pavement consists of a layer of flexible pavement on top of which a layer of rigid pavement is placed or vice versa. All of these types have advantages in addition to disadvantages that affect road performance on the one hand and user convenience on the other. About 50 years ago, work began establishing a type of pavement characterized by its semi-flexible performance, which combines rigid pavement's rigidity and flexible pavement's flexibility. It is called semi-flexible pavement and grouted macadam in some sources. It consists mainly of an open-graded asphalt mixture in which the percentage of air voids ranges from (25 to 35%), and in some sources, it is mentioned that it ranges between (20 to 28%) grouted with a high-performance cementitious material. Work began on this type of pavement in the sixties of the last century. However, there is no approved specification for its design, as its design methods differ according to the researcher's vision. This scientific paper aims to facilitate the way for new researchers in this field by knowing the basic stages of semi-flexible pavement design and presenting the existing design methods and what is required for laboratory tests to evaluate the performance of the completed pavement design. It was found that the performance of semi-flexible paving depends mainly on the bonding between its components, as it is considered a composite material. For this reason, the direction in the future may be to study the bonding between asphalt and cement, in particular, as they are two basic materials in their composition.

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Section: Aggregate Gradation and Blendingmentioning

confidence: 99%

“…SFP HMA Al-Taher et al [28] 6861 Ib 2147 Ib Bharath et al [24] 114.7 kN 17.3 kN Huo et al [53] 29.52 kN -Hao et al [54] 17.12 kN -Jatoi et al [55] 44.91 KN 14 KN…”

Section: Referencementioning

confidence: 99%

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Semi-Flexible Pavement: A Review of Design and Performance Evaluation

Abdulsahib,

Hilal,

Fattah

2023

E3S Web Conf.

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“…Many airports all around the world depend on concrete pavements, particularly when big aircraft are involved and while building the touchdown zone [5]. On the other hand, rigid pavement can sustain significant traffic loads, but it has a significantly higher initial cost, may exhibit increased roughness and noise owing to the presence of transverse joints, and as a result, offers less comfort when riding [6]. Due to the slow curing of concrete, concrete pavement installation and traffic opening generally take longer, so rigid pavement also has disadvantages.…”

Section: Introductionmentioning

confidence: 99%

A scientometric study and a bibliometric review of the literature on the design and construction of semi-flexible pavement

Ali¹,

Al-Humeidawi²

2023

QJES

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In last years, a new type of pavement has gained popularity, this type is called Semi-Flexible Pavement (SFP). It consists of porous asphalt with high air voids between (25-35) % filled with cementitious grout materials. This type of pavement substance offers substantial advantages over both common types of pavements (concrete and flexible) such as good resistance to rutting and durability. SFP is considered an alternative pavement to exceed the drawbacks that occur for both flexible and concrete pavements. SFP has good features against permanent deformation, oil spillage, and fatigue resistance. Previous studies have shown that it can be used in a variety of applications such as highways, motorways, bridge deck pavement, tunnels, industrial areas with industrial equipment traffic, airport aprons, and stations. The goal of this research is to identify and compile the most significant research papers using the Web of Science (WOS), analyze the data using the VOS viewer software, as well as learn which countries and institutions had published the most articles relating to the subject of cementitious grout material as it relates to semi-flexible. It was also done to learn more about the authors and their collaboration. In addition to knowing the keywords that will aid researchers in their research on this topic, using these studies to better understand the elements that affect how well semi-flexible mixtures and grouts perform such as porous asphalt Mixture gradation and grout material components.

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“…Lately, a significant shortage of bitumen supply has been observed in Egyptian market, due to the tremendous road construction works, associated with the current national mega projects. As a result, the government attempted to solve the problem by increasing the local bitumen production [4,5], through the main two production companies (Suez and Alexandria) as well as importing more crude oil from different countries, to cover this shortage in production [6]. However, A serious problem has been observed on the most of the newly constructed Egyptian AC pavements [7][8][9][10], which is rutting distress (as shown in Figure 1), due to the major increasing in the total amount of traffic volume via Egyptian roads network, stripping issues, horizontal deformation and early aging.…”

Section: Introductionmentioning

confidence: 99%

Improving the Performance Grade and Traffic Loading of Egyptian Asphalt Binders by Recycled Polyethylene Modification

Eraky

Ayoub

Osman

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

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Recent SUPERPAVE technology allows assessment and performance grading (PG) of modified asphalts according to AASHTO T 350–14 and ASTM D7405-15 standards. These testing protocols use modified - multiple stress creep recovery (MSCR) test, to yield the high temperature PG and the traffic level of the asphalt binder. Latest AASHTO T 350–14 test protocol is used to assess two major Egyptian bitumen products, Alex and Suez (pen 60/70) before and after polymer modification. These standard products have different fractional composition since they are obtained from different local origins. Low density polyethylene modification (LDPE) of such products leads to a major enhancement in their PGs and decreases their high temperature rutting potential. A characteristic comparison between virgin a and LDPE modified bitumen samples is provided to achieve the desired PG and traffic level for high reliability projects deployed in Egyptian hot climate regions. it was found that a 2% wt recycled LDPE modification, enhances the high temperature performance grade and the traffic grade from PG 58S-XX to PG 64S-XX for the bitumen produced by Alexandria Oil Company, and from PG 58S-XX to PG 70S-XX for the bitumen produced by Suez Oil Company.

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Technical Evaluation of Using Grouting For Producing Semi-Flexible Asphalt Concrete Mixtures.

Cited by 3 publications

References 0 publications

Semi-Flexible Pavement: A Review of Design and Performance Evaluation

Semi-Flexible Pavement: A Review of Design and Performance Evaluation

A scientometric study and a bibliometric review of the literature on the design and construction of semi-flexible pavement

Improving the Performance Grade and Traffic Loading of Egyptian Asphalt Binders by Recycled Polyethylene Modification

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