Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 18 of 18 for “"crumb rubber"”.
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Engineering characterization of the interaction of asphalt with crumb rubber modifier (CRM)
… characterizes the interaction of asphalt with Crumb Rubber Modifier (CRM) using performance testing as used by SHRP. The study provides an understanding of the property development as asphalt interacted with CRM. Two main types of activities are discussed in the paper: particle swelling and …
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Modification of crumb rubber cement interface and its effect on strength and viscoelastic properties
… result, the reuse of waste tires in the form of crumb rubber in concrete has been attempted. Previous research work has shown that the inclusion of crumb rubber in concrete results in a drastic decrease in compressive strength due to the incompatibilities between rubber and cement paste. The …
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Comprehensive investigation of using tire-derived aggregate in chip seal subjected to various traffic and environmental conditions
… commonly used in the United States. Using crumb rubber obtained from scrap tires as a partial or full replacement for mineral aggregate has been proposed as a sustainable solution to reduce the negative environmental impacts of scrap tire accumulation and excessive consumption of natural …
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Feasibility and assessment of using recycled rubber for infrastructure applications
… replacing natural aggregate with recycled crumb rubber aggregate will be beneficial to the construction industry and environment. This research aimed to investigate the feasibility of using recycled rubber in new construction applications. Based on size, recycled rubber was selected to …
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Physical performance and durability evaluation of rubberized concrete
The main objective of this research is to develop rubberized concrete with achievable structural strength using simple mix design. Simple mix design is a description by using the crumb rubber, used as in condition just received from the plant without any washing or pre-treating procedure. Then, …
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THE EFFECTS OF RECYCLED WASTE ON CONCRETE MIXTURE PROPERTIES
… approach consisting of incorporating plastic and rubber waste into engineering applications, such as plastic concrete, and rubberized concrete was proposed. A primary objective of this study is to summarize recent advancements in the utilization of recycled materials in the concrete mix design. …
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Laboratory Evaluation of Storage Stability for CRM Asphalt Binders
… on CRM binder content. The percentages of crumb rubber used for CRM binder were 0%, 5%, 10%, 15% and 20%. According to ASTM D7173, the CRM binder sample was prepared to pour into the vertically held aluminum tube. This tube was conditioned in a vertical position for 48 hours at a …
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Characterization and utilization of alkali-activated concrete for sustainable infrastructures
… NaOH were used as the alkali activators. Slag, crumb rubber, and air-entraining admixture were used as additives to improve the durability of the AAC. Mixing procedure, water/FA, Alk/FA, SS/SH, curing regime, fresh properties, mechanical properties, durability, and repair applicability of the …
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Machine Learning Approaches for Improving Construction Materials and Pavement Systems
… be more effective. The second study examined how crumb rubber particle size affects the strength of rubberized concrete. As demand for eco-friendly materials increases for buildings, rubberized concrete is a cost-effective prospect by recycling tires at the end of their life. Uncertainty of the …
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Impacts of wildfire activity in the wildland-urban interface on environmental mobilization and bioaccessibility of nanoscale trace metals, The
… wildfire generated nanoparticles from Tire Crumb Rubber (TCR), an end-of-life tire product frequently used in children’s playgrounds. Increases in number and size of NPs were associated with burning TCR, including a unique enrichment of Cr in metal NPs. Together, this work rresents for the …
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Preliminary Study of Highway Pavement and Materials
… seal-coat projects that contained some crumb rubber modification, and to determine their field performance. Field reviews between September and October 2015 found most projects were rated either good or fair. Primary distress types were transverse cracking, bleeding, and longitudinal …
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Performance analysis of asphalt mixtures modified with ground tire rubber and recycled materials
Extensive research has been done on rubber-modified asphalt due to its distinct performance benefits, resulting in advancements in the existing rubber modifier technologies. This study focuses on two such new rubber-modifier technologies- an Engineered Crumb Rubber (ECR), and a terminal-blend …
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Improving the performance of cold bituminous emulsion mixtures (CBEMs) : incorporating waste
… porphyry sand, synthetic aggregates, steel slag, crumb rubber, and crushed glass. The aggregate gradations were designed using a modified Fuller's curve. The emulsion used in this investigation was a cationic bitumen emulsion with 60% and 62% binder content composed of 100 pen base bitumen. The …
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Assessment of Fracture Resistance of Asphalt Overlays through Heavy Vehicle Simulator and Laboratory Testing: Synthetic Fiber and Rubber Modified SMA Mixes
… Asphalt Pavement (RAP) and an enhanced asphalt-rubber extender, which comprises three primary components: plain soft bitumen, fine crumb rubber and an Activated Mineral Binder Stabilizer (AMBS). The experiment evaluated the fracture resistance of nine mixes designed with different rates of …
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Strengths and limitations of bioretention sorbent amendments to simultaneously remove metals, PAHs, and nutrients from urban stormwater runoff
… low-cost sorbents as BSM amendments – waste tire crumb rubber (WTCR), coconut coir fiber (CCF), blast furnace slag (BFS), biochar (BC) and iron coated biochar (FeBC) – were investigated for removing several classes of contaminants from simulated stormwater (SSW). The contaminated SSW contained a …
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Innovative approach to use guayule resin as a bio-based asphalt alternative
… bio-based asphalt alternative. Ground tire rubber was used as an asphalt enhancer. To judge the guayule's contribution, guayule-based binders were investigated and compared to control asphalt and asphalt-rubber binders. Binders were assessed according to comprehensive Superpave criteria and …