Journal of Building Pathology and Rehabilitation, Год журнала: 2024, Номер 10(1)
Опубликована: Ноя. 5, 2024
Язык: Английский
Sustainable materials and technologies, Год журнала: 2024, Номер 40, С. e00960 - e00960
Опубликована: Апрель 30, 2024
Paper sludge ash (PSA) is a type of industrial waste produced by the pulp and paper industry that poses both environmental financial difficulties. However, in recent years, scientists engineers have looked into its potential as green sustainable material for variety technical applications. With focus on PSA's appropriateness, advantages, drawbacks, this in-depth research intends to shed light numerous applications PSA engineering. The starts going through composition physical chemical properties them. After that, it looks at various engineering fields where has been used, such geotechnical engineering, building materials. To further explain uses PSA, experimental results are presented. In field construction used an additional cementitious component creation concrete. Its pozzolanic qualities increase strength durability concrete while lessening negative effects cement manufacture. Additionally, soil stabilizer improve lower risk erosion. use challenged questions durability, uniformity, dangers, among other challenges worries. positive resourceful highlighted review, conclusion. It emphasizes need research, standardization, widespread adoption PSA-based products harness full benefits.
Язык: Английский
Процитировано
5
Polymers, Год журнала: 2025, Номер 17(5), С. 698 - 698
Опубликована: Март 6, 2025
The viscoelastic behavior of asphalt mixtures is a crucial consideration in the analysis pavement mechanical responses and structural design. This study aims to elucidate molecular structure component evolution trends polyphosphoric acid (PPA)/styrene butadiene styrene block copolymer (SBS)/styrene rubber (SBR) composite modified (CMA) under rolling thin film oven test (RTFOT) pressure aging (PAV) conditions, as well analyze CMA mixtures. First, accelerated was conducted laboratory through RTFOT, along with PAV tests for 20 h 40 h. Next, microscopic characteristics binder at different stages were explored using Fourier-transform infrared spectroscopy (FTIR) gel permeation chromatography (GPC) tests. Additionally, fundamental rheological properties temperature sweep performed reveal CMA. Ultimately, dynamic loading clarified. results indicate that incorporation SBS SBR increased levels carbonyl sulfoxide factors while decreasing level long-chain factors, which slowed down rate change large molecule content reduced LMS by more than 6%, overall weight distribution narrowing below 50%. simultaneous into enhanced modulus 25 Hz -10 °C range 24.3% (AC-13), 15.4% (AC-16), φ 55.8% 40% (AC-16). research provides reference application repair pothole damage.
Язык: Английский
Процитировано
0
Construction and Building Materials, Год журнала: 2025, Номер 471, С. 140735 - 140735
Опубликована: Март 11, 2025
Язык: Английский
Процитировано
0
Geotechnical and Geological Engineering, Год журнала: 2024, Номер unknown
Опубликована: Июнь 11, 2024
Abstract Soft soil concerns, due to high compressibility and low bearing capacity, prompted an investigation into stabilizing clay soil. Traditionally, binder including cement or lime has been used as stabilizers though a current requirement of alternatives is stem from environmental concerns. The study focused on the viability using novel binary activated blended composed environmentally friendly materials, namely ground granulated blast furnace slag (GGBS) by kiln dust (CKD). experimental work included investigating impact developed binders Atterberg limits, standard Proctor compaction, California Bearing Ratio (CBR), unconfined compressive strength (UCS), field-emission scanning electron microscopy (SEM)/energy-dispersive X-ray spectroscopy. CBR tests were conducted after 7 days curing soaking, while UCS SEM analyses 28 curing. A fixed ratio 9% was maintained, with GGBS at 25%, 50%, 75% CKD. For comparison, samples untreated treated soils unary CKD also prepared. Results indicated that notably decreased plasticity maximum dry density, elevating optimum moisture content, CBR, UCS, especially in later stages binder. Unary exhibited similar trend binders. activating 25% provided which increased mechanical strengths about 6 times than revealed substantial formations C-S-H C-A-H gel, along ettringite, intensifying time. This research provides viable outcomes for binders, demonstrating significant improvements properties, particularly when consisting Graphical
Язык: Английский
Процитировано
3
Results in Surfaces and Interfaces, Год журнала: 2025, Номер unknown, С. 100527 - 100527
Опубликована: Апрель 1, 2025
Язык: Английский
Процитировано
0
Buildings, Год журнала: 2024, Номер 14(10), С. 3109 - 3109
Опубликована: Сен. 27, 2024
In this study, a critical evaluation and the benefits of using waste virgin polymer in an asphalt mixture are presented. The present paper is result three-year research effort to find suitable recyclate compatible with binder setting reaction conditions preparation mixtures mentioned recyclate. This candidate was recycled low-density polyethylene (LDPE), which produced by recycling old, worn-out bags films. An amount 6% LDPE weight content suggested as best modifier. Physical tests, including penetration, softening point, kinematic viscosity have been carried out prove effectiveness modification on properties. blending process appropriate concentration additives led homogeneous polymer-modified bitumen without any imperfections structure. After successful under laboratory conditions, describes directly asphalt-mixing plant subsequent implementation verification section. overall composition prepared has studied. important study that meets all technical requirements. Moreover, it proven type PE fully applicable plants Slovakia, zero or minimal financial burden construction companies complete their production facilities. Using such technology, we can reduce plastics otherwise end up landfill.
Язык: Английский
Процитировано
2
CivilEng, Год журнала: 2024, Номер 5(2), С. 482 - 500
Опубликована: Май 20, 2024
Waste ceramic is produced from different sources and, if not reused, often disposed of in landfills, contributing to the pressure on landfill capacity and potentially releasing toxins into surrounding environment as ceramics break down over time. The waste can easily be crushed required sizes, which has interested many researchers. It been used a replacement for concrete constituents, including cement aggregates. This offers promising avenue reducing environmental impact promoting sustainable construction practices by amount energy consumed resources production, well being sent landfills. paper aims provide review use concrete. In essence, divided several sections. first section highlights current issues associated with production disposal. second deals ceramics, its raw materials, steps, types A literature was included third section. study reports research impacts mechanical durability properties
Язык: Английский
Процитировано
1
Journal of Cleaner Production, Год журнала: 2024, Номер unknown, С. 144068 - 144068
Опубликована: Окт. 1, 2024
Язык: Английский
Процитировано
1
Caderno Pedagógico, Год журнала: 2024, Номер 21(5), С. e4191 - e4191
Опубликована: Май 29, 2024
The poor condition of Brazilian highways is primarily attributed to traffic exceeding the designed capacity, overloading, and use an empirical design method from 1960s. Pavement rehabilitation or restoration designs are generally carried out using outdated standards (DNER PRO 11/79 DNER 269/94). In response this situation, National Design Method (MeDiNa) emerged, which a software accompanied by two other calculation routines uses mechanistic-empirical concept. This paper aims, based on literature review, evaluate scientific approach pavement restoration/rehabilitation MeDiNa method. Through systematic search in database, low number papers that used was identified, only 20 % these articles performed reinforcement calculations, does not align with demand defects presented road network. Additionally, emerging trends topic were outlined through bibliometric analysis. Furthermore, syntheses found search, as well those complementary literature, conducted situate reader concerning issue. Finally, points for improvement need further research such investigation results backanalysis interlayer bonding. conclusion MeDiNa, still implementation phase, has great potential be explored, will help validate
Язык: Английский
Процитировано
1
Materials, Год журнала: 2024, Номер 17(14), С. 3451 - 3451
Опубликована: Июль 12, 2024
This article is a continuation of work on the use plastic waste (such as PP, PS, LDPE, HDPE, and their mixtures) processed in proprietary pyrolysis process asphalt additives. The carried out detailed tests mixes selected additives with pen-graded bitumen 50/70, taking into account, among others, influence impurities ratio PE to PP well short- (RTFOT) long-term (RTFOT + PAV) ageing. An extensive research program was out, including functional rheological wide range temperatures. First, stability adhesion various types aggregates were demonstrating usefulness proposed Then, elastic recovery impact technological ageing penetration, Fraass breaking temperature, plasticity assessed. same binder subjected operational temperatures, assessing, viscosity, norm complex shear modulus, compliance MSCR test, stiffness bending beam rheometer. entire class for clean samples those containing impurities, indicating individual material parameters.
Язык: Английский
Процитировано
1