Mechanical performance of cement-stabilised soil containing recycled glass as road base layer

2019 ◽  
Vol 21 (8) ◽  
pp. 2247-2263
Author(s):  
Rosalia Pacheco-Torres ◽  
Fernando Varela
Keyword(s):  
Mechanical Performance ◽  
Base Layer ◽  
Recycled Glass ◽  
Road Base

scholarly journals Application of the foamed bitumen and bitumen emulsion to the road base mixes in the deep cold recycling technology

2016 ◽  
Vol 11 (4) ◽  
pp. 291-301 ◽  
Author(s):  
Marek Iwański ◽  
Anna Chomicz-Kowalska
Keyword(s):  
Mechanical Properties ◽  
Portland Cement ◽  
Base Layer ◽  
The Road ◽  
Road Base ◽  
Bitumen Emulsion ◽  
Recycling Technology ◽  
Indirect Tensile ◽  
Foamed Bitumen ◽  
Cold Recycling

This paper presents findings of a study concerning the influence of binder type on the mechanical properties of road base in the cold recycling technology. The principal aim of this investigation was to evaluate the mixes in scope of susceptibility to moisture and low-temperatures. In the comparative research foamed bitumen and bitumen emulsion were used in four different concentrations (2.0%, 2.5%, 3.0%, 3.5%). The materials used in the study were reclaimed from an existing road construction layers: reclaimed aggregate from the road base and reclaimed asphalt pavement obtained by milling the surface and binder course. Portland cement in 2.0% concentration was used as a hydraulic binder. The evaluated parameters were: indirect tensile strengths, tensile strength retained and indirect tensile stiffness modulus at 25 °C. These tests were complemented by an evaluation of susceptibility to moisture and frost according to modified procedures implemented by American researchers: Tunnicliff, Root and Lottman. Moreover, tests for low-temperature cracking were conducted according to Finnish standard. The investigations showed that the use of foamed bitumen for road base layer produced in the cold recycling technology results in better mechanical properties and resistance to moisture and frost compared to using bitumen emulsion. The use of 2.5% of foamed bitumen and 2.0% of Portland cement in the recycled road base allowed to meet the established criteria.

scholarly journals Recycled Glass Fiber Composites from Wind Turbine Waste for 3D Printing Feedstock: Effects of Fiber Content and Interface on Mechanical Performance

Materials ◽  
2019 ◽  
Vol 12 (23) ◽  
pp. 3929 ◽  
Author(s):  
Amirmohammad Rahimizadeh ◽  
Jordan Kalman ◽  
Rodolphe Henri ◽  
Kazem Fayazbakhsh ◽  
Larry Lessard
Keyword(s):  
Tensile Strength ◽  
3D Printing ◽  
Wind Turbine ◽  
Glass Fiber ◽  
Mechanical Performance ◽  
Glass Fibers ◽  
Turbine Blades ◽  
3D Print ◽  
Recycled Glass ◽  
Recycled Fibers

This research validates the viability of a recycling and reusing process for end-of-life glass fiber reinforced wind turbine blades. Short glass fibers from scrap turbine blades are reclaimed and mixed with polylactic acid (PLA) through a double extrusion process to produce composite feedstock with recycled glass fibers for fused filament fabrication (FFF) 3D printing. Reinforced filaments with different fiber contents, as high as 25% by weight, are extruded and used to 3D print tensile specimens per ASTM D638-14. For 25 wt% reinforcement, the samples showed up to 74% increase in specific stiffness compared to pure PLA samples, while there was a reduction of 42% and 65% in specific tensile strength and failure strain, respectively. To capture the level of impregnation of the non-pyrolyzed recycled fibers and PLA, samples made from reinforced filaments with virgin and recycled fibers are fabricated and assessed in terms of mechanical properties and interface. For the composite specimens out of reinforced PLA with recycled glass fibers, it was found that the specific modulus and tensile strength are respectively 18% and 19% higher than those of samples reinforced with virgin glass fibers. The cause for this observation is mainly attributed to the fact that the surface of recycled fibers is partially covered with epoxy particles, a phenomenon that allows for favorable interactions between the molecules of PLA and epoxy, thus improving the interface bonding between the fibers and PLA.

Mechanical performance of engineered cementitious composites incorporating recycled glass powder

2020 ◽  
Vol 47 (12) ◽  
pp. 1311-1319 ◽  
Author(s):  
Adeyemi Adesina ◽  
Sreekanta Das
Keyword(s):  
Fly Ash ◽  
Power Plants ◽  
Glass Powder ◽  
Mechanical Performance ◽  
Partial Replacement ◽  
Cementitious Composite ◽  
Engineered Cementitious Composite ◽  
Recycled Glass ◽  
Alternative Materials ◽  
Coal Power Plants

Engineered cementitious composite (ECC) is conventionally made up of high content fly ash (FA) combined with Portland cement (PC) as a binder. However, the growing call for sustainability is leading to continuous decommissioning of various coal power plants around the world thereby limiting the supply of fly ash available for ECC production. Therefore, it is of high importance to find alternative materials that can be incorporated into ECC as a partial replacement of the conventional binders. This experimental investigation was carried out to investigate the feasibility of incorporating glass powder (GP) as binder into ECC mixtures. The mechanical performance in terms of its compressive, tensile, and flexural properties was evaluated. Results from this study showed that 25% FA can be replaced with GP without any significant reduction in the mechanical performance of ECC mixtures. Microstructural investigations of the mixtures incorporating GP show good bonding between the cementitious matrix and the fibres.

scholarly journals The Analysis of Stress Distribution on the Physical Model of Road Base Layer

2020 ◽  
Vol 12 (8) ◽  
Author(s):  
◽  
Azman Mohamed ◽  
Hasanan Md. Nor ◽  
Nur Hafizah A. Khalid ◽  
◽  
...  
Keyword(s):  
Stress Distribution ◽  
Physical Model ◽  
Base Layer ◽  
Road Base

Concrete Made with Recycled Glass Aggregates: Mechanical Performance

2015 ◽  
Vol 112 (1) ◽  
Author(s):  
Diogo Serpa ◽  
Jorge de Brito ◽  
Jorge Pontes
Keyword(s):  
Mechanical Performance ◽  
Recycled Glass

Research on the Mechanical Performance of the Road Base Materials with Steel Slag Sand

2012 ◽  
Vol 174-177 ◽  
pp. 676-680
Author(s):  
Fang Xu ◽  
Ming Kai Zhou ◽  
Jian Ping Chen
Keyword(s):  
Compressive Strength ◽  
Fly Ash ◽  
Unconfined Compressive Strength ◽  
Mechanical Performance ◽  
Steel Slag ◽  
Base Material ◽  
Strength Performance ◽  
The Road ◽  
Road Base ◽  
Base Materials

The unconfined compressive strength is used to be the valuation index, the mechanical performance of three kinds of new road base material, which are fly ash stabilized steel slag sand (FA-SS for short), lime and fly ash stabilized steel slag sand (L-FA-SS for short), cement and fly ash stabilized steel slag sand(C-FA-SS for short), are studied in this paper. The results show that the unconfined compressive strength performance of FA-SS is similar to L-FA-SS, and it can meet the highest strength when the ratio of steel slag to fly ash is 1:1~2:1. When the ratio of fly ash to the steel slag is 10:90, it is good to use cement stabilizing. Comparing the new road base materials with the traditional road base material, the former has better strength performance and economy function advantage.

Fibre optic sensing measurement of static surface load distribution on road base layer

2020 ◽  
Vol 849 ◽  
pp. 012045
Author(s):  
G G Giwangkara ◽  
A Mohamed ◽  
N H A Khalid ◽  
H M Nor ◽  
I S Ahmad ◽  
...  
Keyword(s):  
Load Distribution ◽  
Base Layer ◽  
Surface Load ◽  
Fibre Optic ◽  
Road Base
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