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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 17 of 17 for “"Skid resistance"”.
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Performing Network Level Crash Evaluation Using Skid Resistance
… (CV). Additionally, tire-pavement friction or skid resistance was measured using a continuous friction measurement, fixed-slip device called a Grip Tester. In keeping with the current practice, negative binomial regression was used to relate the crash data to the AADT, skid resistance and CV. …
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Analyzing Skid Resistance and Tire/Road Noise on Porous Pavement Using Numerical Modeling
Skid resistance and tire/road noise are major concerns in pavement functional performance. Porous pavement enhances skid resistance through inner drainage and reduces tire/road noise through acoustic absorption. This study attempts to explore the development of numerical models in predicting skid …
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Quantifying the Relationship Between Skid Resistance and Wet Weather Accidents for Virginia Data
… attempts to quantify the effect of pavement skid resistance on wet accident rates have produced inconsistent results. This thesis analyzes the relationships between skid resistance, accident, and traffic data for the state of Virginia. The correlation between wet skid resistance measured with …
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Laboratory investigation of diamond grinding and grooving textures on concrete pavement surfaces
… is believed to be enough to provide the required skid resistance. Diamond grinding is a part of a Concrete Pavement Rehabilitation (CPR) technique that is used primarily to plane the pavement surface. The practice results in a strong macrotexture that is adequate to provide an improvement in the …
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Reducing Highway Crashes with Network-Level Continuous Friction Measurements
… to tire-pavement friction is referred to as skid resistance and is provided by pavement microtexture and macrotexture. The amount of skid resistance depreciates over time due to the polishing action of traffic, and for this reason, the skid resistance should be monitored with friction testing …
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Evaluating the Sensitivity of the Auckland Pavement Polishing Device and Analysis of Aggregate Microtextural Wear
Skid resistance is a key factor in road safety. However, over time, the pavement surface is polished by vehicle tyres, reducing the micro-texture of aggregates and macro-texture of the road surface, resulting in a deterioration of skid resistance. Consequently, it is necessary to be able to …
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Performance of Concrete Bridge Deck Surface Treatments
… and remain uncracked with an acceptable level of skid resistance. Silicon-based products do not crack because they seep into the pores of the concrete, but they do not protect the concrete from the wearing effects of traffic or improve skid resistance. Published field studies indicate that …
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Influence of mix design parameters on restrained shrinkage cracking in non-structural concrete patch repair mortars
… the design and development of PRMs with improved resistance to cracking challenging. The problem is further compounded by the fact that the existing code of practice for concrete repair - the EN 1504-3:2005 - specifies many material properties such as chloride ion content, compressive strength, …
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Evaluation of selected airport pavements in New Mexico
… on the field collected surface distress data and skid resistance. Field collected distress data such as rutting, cracking, and shoving are processed using MicroPaver, a commercial pavement management software, to calculate the Pavement Condition Index (PCI). Field collected skid resistance test …
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Quality Assurance for Chip Seals Using Mean Profile Depth
… various parameters, including texture depth, skid resistance, and visual evaluation. Current practice reveals that transportation agencies conduct quality assurance after construction, while contractors are typically responsible for chip seal placement and quality control. However, existing …
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The development of a thermoplastic road marking material standard
… should conform, such as the Qd, colour and skid resistance. There are various types of road marking paints and road marking materials, namely solvent-borne, water-borne, cold plastic, thermoplastic and preformed tape applied universally. In SA, solvent-borne paints, water-borne paints and …
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Road safety : an analysis of shortcomings with proposals for improvements from a road engineering perspective
… themselves, especially with potholes and low skid resistance; roads that cater almost exclusively for the needs of motorised traffic, ignoring those of other categories of users: insufficient pedestrian crossings, inadequate lighting, obstructions; negligent behaviour, particularly …
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Comparison of Surface Characteristics of Hot-Mix Asphalt Pavement Surfaces at the Virginia Smart Road
… friction and texture properties. A locked wheel skid trailer and a laser profilometer were used to assess the pavement surface characteristics. Laboratory testing of the pavement wearing surface mixtures was performed to determine volumetric and mixture specific characteristics. Testing included …
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The skidding resistance potential of steel slag aggregates.
… aggregates.The work reported here relates to the skidding resistance potential of steel slag aggregate for use in highway surfaces. Results are presented for both the laboratory determination of the properties of steel slag and for the in-service behaviour of steel slag aggregate road surfaces.The …
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Evaluation of International Friction Index and High-Friction Surfaces
… effort to compare and harmonize texture and skid resistance measurements taken with various devices on 24 pavement sections with a wide range of textures. Measurements were compared and the International Friction Index (IFI) calculated following PIARC and ASTM steps. The results revealed …
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The use of Lethabo field 2 PFA in pavement quality concrete
… surface results in poor riding quality and low skid resistance. The inclusion of Pulverised Fuel Ash (PFA), otherwise known as fly ash, generally improves the quality of pavement concrete and thus extends its useful life. The PFA used for the thesis was from the Lethabo power station's second …
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Alternatives to PCI and MicroPAVER based maintenance solutions for airport pavements
… can be drawn between PCI and SCI, but Skid Number does not show any correlation with any other indices for this study where Skid Number (SN) represents the skid resistance of the pavement surface. Developed design charts are helpful to set cutoff PCI and to select the most effective …