|Table of Contents|

Characteristic and control method of early-age temperature field for cement concrete pavement(PDF)

《交通运输工程学报》[ISSN:1671-1637/CN:61-1369/U]

Issue:
2013年05期
Page:
1-9
Research Field:
道路与铁道工程
Publishing date:

Info

Title:
Characteristic and control method of early-age temperature field for cement concrete pavement
Author(s):
HU Chang-bin;  SUN Zeng-hua;  WANG Li-juan
School of Civil Engineering, Fuzhou University, Fuzhou 350108, Fujian, China
Keywords:
road engineering;  cement concrete pavement;  early-age;  temperature field characteristic;  construction control;  built-in temperature
PACS:
U416.216
DOI:
-
Abstract:
The control principles of early-age temperature field were put forward based on the temperature stress, built-in basic temperature,built-in temperature difference and curing temperature of cement concrete pavement. The specialized early-age temperature field numerical simulation program of cement concrete pavement was used, the sensitivities and influencing characteristics of pavement early-age temperature field parameters were researched, and the effectivenesses of pavement early-age temperature field control measures were evaluated. Analysis result shows that compared with material parameters, environment construction parameters are major factors effecting pavement early-age temperature characteristics. Appropriate paving time and environment condition may change the temperature difference between the top and the bottom of slab more than 20 ℃. Proper curing methods and curing materials may reduce the temperature of pavement more than 12 ℃. Concrete paving temperature, water cement ratio and cement content significantly effect built-in basic temperature. For specific temperature control target, the sensitivities of influencing parameters are not the same, field pavement early-age temperature simulation should be combined to balance the effects of control measures. 5 tabs, 18 figs, 15 refs.

References:

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Last Update: 2013-10-30