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- W2187064243 abstract "Note: The following is the notation used in this paper: ( . ) for decimals and ( ) for thousands. Summary Bedding sands are a critical component of all sand-set segmental concrete paving systems. Failure of the bedding sand layer has occurred in channelized vehicular loads from two main actions; structural failure through degradation and saturation due to inadequate drainage. Typical North American specifications require bedding sands to conform to ASTM C 33 and CSA A 23.1 (FA1) gradation for concrete sands with additional limits on the allowable amount of material that passes the 0.075 mm sieve. While gradation is an important consideration for bedding sand selection, other characteristics should be assessed for vehicular applications in order to ensure long-term pavement performance. This paper reviews relevant international research, presents the characteristics of good performing North American bedding sands from a study conducted by the Interlocking Concrete Pavement Institute [ICPI, 2004], and presents recommendations for prequalification of bedding sands for vehicular traffic. Primary material property limits are introduced for prequalifying bedding sands including degradation using the Micro-Deval test procedure and drainage using the constant head permeability test method. Secondary material properties are also suggested for prequalification, including sodium sulfate or magnesium sulfate soundness, silica/carbonate ratio, and particle shape/angularity. This paper provides guidance on bedding sand selection to specifiers and contractors for vehicular applications." @default.
- W2187064243 created "2016-06-24" @default.
- W2187064243 creator A5057576010 @default.
- W2187064243 date "2009-01-01" @default.
- W2187064243 modified "2023-09-27" @default.
- W2187064243 title "DEVELOPMENT OF NORTH AMERICAN GUIDELINES FOR PREQUALIFICATION OF BEDDING SAND FOR USE IN SEGMENTAL CONCRETE PAVEMENTS IN VEHICULAR APPLICATIONS" @default.
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