Method of polishing specimens prior to the measurement of slip and skid resistance

2015 ◽  
Keyword(s):  
Skid Resistance

Relationships Between the Friction and Viscoelastic Properties of Rubber

2000 ◽  
Vol 28 (3) ◽  
pp. 178-195 ◽  
Author(s):  
N. Amino ◽  
Y. Uchiyama
Keyword(s):  
Viscoelastic Properties ◽  
Skid Resistance ◽  
Grain Sizes ◽  
Abrasive Grain ◽  
The Coefficient Of Friction ◽  
Tan Δ ◽  
Silicone Carbide ◽  
And Storage ◽  
Wet Skid Resistance ◽  
Frequency Curves

Abstract In this study, the relationships between friction and viscoelastic properties such as loss tangent tan δ and storage modulusE′ were examined. Wet skid resistance was measured using the British Pendulum Tester. The rubber specimens were rubbed againstfive silicone carbide cloths of differing abrasive grain sizes. The viscoelastic properties of the rubber specimens were measured with a viscoelasticspectrometer. From the data on wet skid resistance and viscoelastic properties, it is found that the coefficient of friction μ varies as follows:           μ = a + b · tan δ/E′ where a and b are constants. Tan δ/E′ was related to the hysteresis term of friction, and the μ-frequency curves were compared with the tan δ/E′ –frequency curves.

scholarly journals Sustainable Use of Waste Polypropylene Fibres to Enhance the Abrasion and Skid Resistance of Two-Stage Concrete

2021 ◽  
Vol 13 (9) ◽  
pp. 5200
Author(s):  
Rayed Alyousef
Keyword(s):  
Abrasion Resistance ◽  
Research Work ◽  
Sustainable Use ◽  
Plain Concrete ◽  
Skid Resistance ◽  
Two Stage ◽  
Polypropylene Fibres ◽  
Conventional Concrete ◽  
Carpet Industry ◽  
Waste Polypropylene

Two-stage concrete (TSC), also known as prepacked aggregate concrete (PAC), differs from traditional concrete in terms of site application and manufacturing process. Although this type of concrete is not a replacement for conventional concrete applications, it is an ideal option for unusual and difficult placing conditions, especially for repairing existing concrete structures. In other words, this type of concrete is a newly developed concrete and made by placing and packing coarse aggregates and fibres in a designed formwork, then injecting a cement grout mixture into the free spaces between the aggregate particles using gravity or a pump device. For the mentioned system and others, concrete components used as floors or pavements must have an adequate degree of roughness during service life when exposed to skid and abrasion. Thus, this research work introduced a new concrete method (prepacked aggregates fibre-reinforced concrete—PAFRC) with high abrasion and skid resistance reinforced with waste polypropylene (PP) fibres from the carpet industry. The effects of PP fibres at 0–1% dosages on the mechanical properties, abrasion resistance, and skid resistance of PAFRC mixes were studied. The results revealed that the addition of PP fibres reduces the compressive strength of concrete mixtures. Nonetheless, the presence of PP fibres results in PAFRC mixes having higher tensile strength, abrasion resistance, and skid resistance than plain concrete. It was detected that in both grouting methods (gravity and pump), with the addition of PP fibre up to a specific dosage, the resistance against abrasion and skid was increased by about 26% compared to plain PAC mix. Additionally, the outcomes indicated that PAFRC is a promising material for applications such as pavements with high abrasion and skid resistance.

scholarly journals Degradation Prediction Model for Friction of Road Pavements with Natural Aggregates and Steel Slags

2019 ◽  
Vol 10 (1) ◽  
pp. 32 ◽  
Author(s):  
Bruno Crisman ◽  
Giulio Ossich ◽  
Paolo Bevilacqua ◽  
Roberto Roberti
Keyword(s):  
Residual Life ◽  
Steel Slag ◽  
Steel Production ◽  
Threshold Level ◽  
Skid Resistance ◽  
Concrete Pavements ◽  
Cumulative Number ◽  
The Road ◽  
On The Road ◽  
Natural Aggregates

Steel production wastes (steel slags) are used more often in asphalt concrete pavements as a valuable replacement for natural aggregates, which are becoming increasingly rare. In this paper authors investigate the polishing characteristics of aggregates, and in particular of steel slags, used in bituminous road surfacing, are a major factor in determining the resistance to skidding. The main purpose of the study is the identification of a suitable degradation model, based on friction indicators, in the laboratory, as well as the comparison of in-situ pavement skid resistance with the cumulative number of passing vehicles over the years. The model predicts the expected resistance to skidding of the road surface based on the knowledge of the polished stone value (PSV) of the aggregates and the expected traffic on the road. In this study, several types of aggregates were compared: steel slag, limestone, limestone and slag mixture, diabase, Criggion stone and basalt. Using a standard PSV test, it was found that the aggregates did not reach the lower value of skid resistance (equilibrium value). The analysis of the British Portable Number (BPN) data versus polishing time allowed to empirically derive a regression model for each investigated aggregate. Hence, it appears possible to define both an investigatory level and threshold level to predict the actual residual life of the pavement from the examination of skid resistance.

Study on the skid resistance of asphalt pavement: A state-of-the-art review and future prospective

2021 ◽  
Vol 303 ◽  
pp. 124411
Author(s):  
Fucheng Guo ◽  
Jianzhong Pei ◽  
Jiupeng Zhang ◽  
Rui Li ◽  
Bochao Zhou ◽  
...  
Keyword(s):  
State Of The Art ◽  
Asphalt Pavement ◽  
Skid Resistance

Measurement, Analysis, Evaluation, and Restoration of Skid Resistance on Streets of Muscat

1999 ◽  
Vol 1655 (1) ◽  
pp. 200-210 ◽  
Author(s):  
Galal A. Ali ◽  
Rashid Al-Mahrooqi ◽  
Mohammed Al-Mammari ◽  
Nasser Al-Hinai ◽  
Ramzi Taha
Keyword(s):  
Skid Resistance ◽  
Measurement Analysis

Investigation to the skid resistance of asphalt pavement based on the movement of aeolian sand

2022 ◽  
Vol 318 ◽  
pp. 125986
Author(s):  
Yu Xue ◽  
Peilong Li ◽  
Chenxi Zhao ◽  
Yong Wang ◽  
Chao Sun ◽  
...  
Keyword(s):  
Asphalt Pavement ◽  
Skid Resistance ◽  
Aeolian Sand

Skid Resistance of Asphalt Concrete at the Construction Stage Based on Thai Aggregates

2016 ◽  
Vol 28 (12) ◽  
pp. 04016145 ◽  
Author(s):  
Sitthichai Siriphun ◽  
Smai Chotisakul ◽  
Suksun Horpibulsuk
Keyword(s):  
Asphalt Concrete ◽  
Skid Resistance ◽  
Construction Stage
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