Effects of Nanosilica on the Properties of Ultrafine Cement–Fly Ash Composite Cement Materials DOI Creative Commons
Kai Wang,

Siyang Guo,

Jiahui Ren

и другие.

Nanomaterials, Год журнала: 2024, Номер 14(24), С. 1997 - 1997

Опубликована: Дек. 13, 2024

The increasing incidence of structural failures, such as cracks and collapses, in rock masses within mines, tunnels, other civil engineering environments has attracted considerable attention among scholars recent years. Grouting serves a principal solution to these issues. Renlou Coal Mine the Anhui Province is used case study evaluate effectiveness nanosilica (NS) an additive ultrafine cement (UC), introducing novel grouting material for practical applications. This investigates physical microscopic properties UC–ultrafine fly ash (UFA) mixed slurry containing powdered NS. Slurries pure UC, UFA-blended UC with NS were prepared, their viscosity, water precipitation rate, compressive strength evaluated. Scanning electron microscopy X-ray diffraction analyses. results showed that addition UFA induced more compact structure reduced porosity. It was found viscosity 7 d 28 strengths 50% decreased by 91%, 51%, 29.2%, respectively, separation rate increased 306.5%. decrease early pronounced, content should not exceed 25%. Compared without NS, 1.5% 216%, 51.2%, 37%, 45%. Notably, when 1.5%, performance improved most, C-S-H gel produced. Cement consumption costs could be lowered replacing part Finally, orthogonal tests conducted select optimal proportions grouting. blend determined composed 20% water–cement ratio 0.6. study’s only demonstrate good effect on improving cement-based materials but also provide new insights design application support underground engineering.

Язык: Английский

Nano-Additives in Asphalt Binder: Bridging the Gap between Traditional Materials and Modern Requirements DOI Creative Commons
Amjad H. Albayati, Roaa Hamed Latief, Hasan Al-Mosawe

и другие.

Applied Sciences, Год журнала: 2024, Номер 14(10), С. 3998 - 3998

Опубликована: Май 8, 2024

This research delves into the realm of asphalt technology, exploring potential nano-additives to enhance traditional binder properties. Focusing on Nano-Titanium Dioxide (NT), Nano-Aluminum Oxide (NA), and Nano-Silica (NS), this study investigates effects incorporating these nanomaterials at varying dosages, ranging from 0% 8%, binder’s performance. employs a series experimental tests, including consistency, storage stability, rotational viscosity, mass loss due aging, rheological properties, assess impact characteristics. The findings indicate substantial improvement in consistency with addition nanomaterials, particularly NS, which shows 41% reduction penetration an 8% content notable increase softening point. stability tests reveal that NS-modified exhibits superior compared NT NA, significantly lower ΔT increase. Furthermore, investigation viscosity suggests despite increasing does not exceed AASHTO M320 threshold, ensuring workability. Aging demonstrate NT, concentrations, acts as effective anti-aging agent, whereas NA NS tend loss, impacting thermal stability. concludes while each nanomaterial uniquely influences stands out terms enhancing high-temperature performance Optimal dosages 6% for 4% are recommended based Overall Desirability analysis. bridges gap between materials modern requirements, highlighting transformative advancing pavement technology.

Язык: Английский

Процитировано

7
Toward sustainable roads: a critical review on nano-TiO2 application in asphalt pavement DOI
Pooyan Ayar,

Ali Ruhi,

Aryan Baibordy

и другие.

Innovative Infrastructure Solutions, Год журнала: 2024, Номер 9(5)

Опубликована: Апрель 16, 2024

Язык: Английский

Процитировано

5
An Overview of Phase Change Materials and Their Applications in Pavement DOI Creative Commons
Kinga Korniejenko, Marek Nykiel, Marta Choińska

и другие.

Energies, Год журнала: 2024, Номер 17(10), С. 2292 - 2292

Опубликована: Май 10, 2024

The composite of a phase change material (PCM) and bitumen or asphalt as matrix is expected new, advanced for road construction. main motivation this article was to show the new possibilities perspectives developing pavement with usage PCMs. Incorporating PCMs into paving materials can improve their properties, including allowing regulation temperature, enhancement durability, avoiding phenomenon heat-island on road. purpose evaluate contemporary investigations in area application materials, especially bitumen; summarize advantages disadvantages implementation PCM construction; discuss further trends area. This manuscript explored state art based research literature. It shows possible solutions, presenting composition discussing key properties manufacturing technologies used. implementations are considered, economic issues.

Язык: Английский

Процитировано

5
Nanomaterials in asphalt cement: exploring their single and combined effects on the physical and rheological properties DOI Creative Commons
Amjad H. Albayati, Mazen J. Al‐Kheetan,

Mustafa M. Moudhafar

и другие.

Results in Engineering, Год журнала: 2024, Номер unknown, С. 103225 - 103225

Опубликована: Окт. 1, 2024

Язык: Английский

Процитировано

4
An Investigation of Key Mechanical and Physical Characteristics of Geopolymer Composites for Sustainable Road Infrastructure Applications DOI Creative Commons

Adam Kmiotek,

Beata Figiela, Michał Łach

и другие.

Buildings, Год журнала: 2025, Номер 15(8), С. 1262 - 1262

Опубликована: Апрель 11, 2025

One of the most important areas construction industry is road infrastructure. It plays a crucial role in economy various countries. Today’s roads must withstand long-term temperature and load differences, but some infrastructure cannot survive these tests, after one severe winter, there may be asphalt cracks holes that need to repaired. This problem requires new applications more resistant materials. Geopolymers are potential candidates. class material as building for has frost salt. The aim study herein demonstrate mechanical physical properties composite geopolymer made from fly ash, coal shale, nanosilica, carbon fiber application research experiments will serve determine whether geopolymers suitable replacing traditional concrete processes. following methods were applied: SEM, XRF, XRD, compressive strength testing, abrasion, investigation freeze–thaw resistance climatic chamber. results confirm possibility applying compositions infrastructure, including sufficient such ca. 38 MPa resistance, shown by mass loss about 1.7%, well abrasion 4%.

Язык: Английский

Процитировано

0
A Review of Biomass-Derived Biochar and Its Potential in Asphalt Pavement Engineering DOI Open Access
Li Zhou

Materials Science-Poland, Год журнала: 2024, Номер 42(2), С. 81 - 99

Опубликована: Июнь 1, 2024

Abstract Biomass-derived biochar has gained significant attention due to its unique properties and potential applications in various fields, including asphalt pavement engineering. However, there been no comprehensive review date that systematically examines the state-of-the-art research on utilization pavements, identifies key knowledge gaps, provides recommendations for future directions. This aims fill this gap by providing a novel critical analysis of sources production methods biochar, techniques modifying characterizing properties, recent as an binder modifier, mixture additive, stormwater filter material. The employs systematic literature search methodology, using scientific databases such Web Science Scopus, keywords related asphalt, pavement, environmental economic aspects. selected studies are reviewed synthesized identify challenges, directions, with focus technical, environmental, feasibility pavements. also life cycle assessment, carbon sequestration potential, cost-benefit utilization. novelty lies holistic approach assessing identification needs opportunities advancing emerging field. provide valuable insights researchers, practitioners, policymakers interested leveraging benefits sustainable high-performance

Язык: Английский

Процитировано

1
Novel Bio-Nanocomposite for Asphalt Pavements: Montmorillonite Intercalated with Castor Oil DOI
Anastasiya Y. Yadykova, Saba Shariati,

Elham H. Fini

и другие.

ACS Sustainable Chemistry & Engineering, Год журнала: 2024, Номер 12(35), С. 13062 - 13079

Опубликована: Авг. 22, 2024

This study introduces an innovative bionanocomposite to enhance the sustainability of asphalt pavements. The is made from montmorillonite clay and castor oil. Preswelling in isopropanol/water mixture facilitated intercalation oil into interlayer space subsequent replacement with molecules. displaced molecules plasticized matrix, thereby improving asphalt's workability resistance low-temperature cracking. particles reinforced enhancing its permanent deformation at high temperature. It was found that synergistic use led significant enhancement properties owing partial hydrolysis formation ricinoleic acid, which formed strong hydrogen bonds ion–dipole surface. provides insights underlying mechanisms leading role matrix. outcome promotes naturally occurring resources resource conservation while pavement.

Язык: Английский

Процитировано

1
Модификация битумов и асфальтобетонов углеродными наноматериалами: краткий обзор DOI

А.Р. Кенжегалиева,

А.Б. Жамболова,

Е.К. Онгарбаев

и другие.

Горение и Плазмохимия, Год журнала: 2024, Номер 22(2), С. 109 - 122

Опубликована: Июнь 17, 2024

В краткой обзорной статье рассмотрена модификация нефтяных битумов и асфальтобетонных смесей углеродными наноматериалами. качестве углеродных наноматериалов выбраны углеродные нанотрубки, фуллерены графен. Показано влияние добавок на физико-механические характеристики битумов, полимер-битумных вяжущих смесей. Содержание при модификации не превышает 5 мас. %, в среднем оставляет около 1 %. Модификация наноматериалами приводит к повышению температуры размягчения, вязкости, предела прочности сжатие снижению глубины проникания иглы растяжимости. При этом улучшаются степень эффективности параметр устойчивости колееобразованию. обзоре также приводятся сведения о механизме действия состав свойства асфальтобетонов. Показаны преимущества недостатки Применение модифицированных битумных для дорожных покрытий экономически выгодно из-за многократного увеличения срока их службы. Необходимы дальнейшие исследования лучшего понимания использования модификатора фундаментальном уровне, а эксплуатационных характеристик.

Язык: Русский

Процитировано

0
Studying Characteristics of Hot Fine-Grained Asphalt Concrete with the Addition of Coked Sands from the Pyrolysis of Oil Sands DOI Open Access
Yerbol Tileuberdi, Yerdos Ongarbayev, Zhazira Mukatayeva

и другие.

Processes, Год журнала: 2024, Номер 12(11), С. 2540 - 2540

Опубликована: Ноя. 14, 2024

This paper investigates the potential use of coked sands, a byproduct thermal processing (pyrolysis) oil in asphalt concrete mixtures. After pyrolysis extracts from sand, remaining mineral part becomes and changes color to black as solid waste, resulting coating biochar. The sand’s X-ray phase analysis (XRD) shows peaks at 4.2564, 3.6749, 3.3768, 3.2380, 3.1903, 2.4581, 2.2800, 2.2365. Quartz, aluminosilicates, metal oxides, possibly even carbonates make up makeup, indicated by these peaks. One way them is road construction. In this study, we substituted sand screenings with amounts 5%, 7%, 10% examine its impact on composition concrete. study used 5% paving bitumen (BND 70/100) binder for materials varying sizes. It concludes that using produce can save 5–10% screenings. test results showed adding 7% increases compressive strength 50 °C 8% 31%, respectively. Adding does not increase actually makes it weaker. samples meet type B grade 1 standards ST RK 1225-2019.

Язык: Английский

Процитировано

0
Fundamental Thermodynamic Aspects for the Effective Dispersion of Carbon Nanotubes and Improve Performance Grade of Bitumen DOI Creative Commons
Azariy Lapidus, Dmitriy Topchiy, Svetlana Shekhovtsova

и другие.

Applied Sciences, Год журнала: 2024, Номер 14(23), С. 11271 - 11271

Опубликована: Дек. 3, 2024

The application of carbon nanotubes to enhance bitumen properties is relevant due the need increase durability asphalt concrete pavements and reduce maintenance costs. Key areas requiring further study include processes during ultrasonic dispersion, selection optimal medium, stability resulting dispersions. This examines dispersions containing multi-walled (MWCNTs) Taunit M (from 5·10−4 5·10−2%) various hydrocarbon plasticizers. For first time, change in Gibbs free energy, enthalpy (interaction energy), mixing disordering entropy was calculated based on experimental data (surface tension, average cubic diameter MWCNTs, molecular mass, etc.). were compared with storage polymer-modified binders (PMBs). It found that plays a key role forming thermodynamically stable dispersions, while contribution minimal. High dispersion MWCNTs can at high concentrations despite growth. Systems selective purification extracts showed best PMB thermodynamic instability. property changes after 3 days 180 °C no more than 5%. suggests structural from component interactions are critical, highlighting for an integrated approach considering both macroscopic properties.

Язык: Английский

Процитировано

0