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Title:

DESIGN CONSIDERATIONS FOR A DIRECT-FIRED PROPANE HEATER TO PREHEAT THE BASE FOR COLD-WEATHER PAVING

Accession Number:

00129487

Record Type:

Component

Availability:

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Order URL: http://worldcat.org/isbn/0309024544

Abstract:

A prototype direct-fired propane heater with variable gas rate and speed was designed for preheating the base to study cold-weather paving of thin mats. The results obtained were compared with those predicted by the computer program. The computer program was then used to simulate cold-weather paving. Statistical analysis of the data revealed that only three of the eight variables were significant. The effect of these three significant variables on the time available for compaction was found to be linear. A nomogram was constructed to predict the time available for compaction. From the results of this study, a 12 by 12-ft (3.6 by 3.6-m) propane heater producing approximately 300,000 btu/hr-sq ft (9300 kW/sq m) and moving 2 min ahead of the paver at a speed of 20 to 80 ft/min (6.1 to 24 m/min) is recommended as a final design. Propane gas consumption for such a heater is estimated to be 1,980 lb/hr (890 kg/h), which will result in a fuel cost of $138/hr.

Supplemental Notes:

Publication of this paper sponsored by Committee on Flexible Pavement Construction. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved.

Monograph Accession #:

01414369

Authors:

Shah, N D
Dickson, P F

Pagination:

pp 55-62

Publication Date:

1975

Serial:

Transportation Research Record

Issue Number: 549
Publisher: Transportation Research Board
ISSN: 0361-1981

Conference:

54th Annual Meeting of the Transportation Research Board

Location: Washington District of Columbia
Date: 1975-1-13 to 1975-1-17

ISBN:

0309024544

Media Type:

Print

Features:

Figures (7) ; References (5) ; Tables (2)

Old TRIS Terms:

Subject Areas:

Construction; Data and Information Technology; Design; Finance; Highways

Files:

TRIS, TRB

Created Date:

Mar 10 1976 12:00AM

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