|Table of Contents|

Detecting by pumping height and treating with self-compensation mud-jack materials for voids beneath pavement slabs(PDF)

长安大学学报（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2013年01期
Page:
28-32
Research Field:
道路工程
Publishing date:

Info

Title:
Detecting by pumping height and treating with self-compensation mud-jack materials for voids beneath pavement slabs
Author(s):
WANG Qian1;  LIU Jin-tao1;  WANG Xuan-cang2
1. School of Civil Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, Shaanxi, China; 2. School of Highway, Chang'an University, Xi'an 710064, Shaanxi, China
Keywords:
road engineering;  evaluation criterion;  self-compensation mud-jack material;  pumping height;  void beneath slab
PACS:
U416.21
DOI:
-
Abstract:
In order to solve the problem that the domestic and overseas researches on the relationship between the voids beneath slabs of the pavement and the degree of pumping were few and the common mud-jack materials used for voids treatment could cause voids again, based on Yantai-Weihai highway testing section as backing project, the evaluation criteria for detecting the degree of voids based on pumping height were put forward by analyzing the statistical observed data of pumping height and practical drill-detecting data of voids in the testing section. The cement and organic mud-jack materials were improved by using the shrinkage-compensating principle, then the suitable self-compensation mud-jack materials were recommended for treating the slight, moderate and severe degree of voids. The rechecking results of drilling and deflection detecting indicate that the accuracy of the evaluation above reaches 80%, and the deflection of pavement slabs with voids treated by the recommended self-compensation mud-jack materials is less than 0.2 mm. 4 tabs, 4 figs, 11 refs.

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Last Update: 2013-02-20