|Table of Contents|

Key technical indexes about hard sandstone in cement stabilized aggregate mixture(PDF)

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

Issue:
2011年05期
Page:
12-17
Research Field:
Publishing date:
2011-10-20

Info

Title:
Key technical indexes about hard sandstone in cement stabilized aggregate mixture
Author(s):
CONG Zhuo-hong1;  YAN Hong-guang2;  ZHENG Nan-xiang3
1. Key Laboratory for Highway Construction Technology and Equipment of Ministry of Education, Chang'an University, Xi'an 710064, Shaanxi, China; 2. Sichuan Guangnan Expressway Co Ltd, Chengdu 610041, Sichuan, China; 3. Key Laboratory for Special Area Highway Engineering of Ministry of Education, Chang'an University, Xi'an 710064, Shaanxi, China
Keywords:
road engineering;  cement stabilized aggregate mixture;  hard stone;  Pearson simple correlation coefficient;  ruggedness test;  strength;  durability
PACS:
U414
DOI:
-
Abstract:
Aimed at the deficiency of aggregate technical standards in semi-rigid base specification, the local hard sandstone materials are difficult to be used in expressway. According to the Pearson simple correlation coefficient between the mixture's pavement performance indexes and the raw material's indexes, the critical quality indexes of hard sandstone have five kinds, such as crushed stone value after ruggedness test, rock saturated compressive strength, crushed stone value, rock saturated compressive strength after ruggedness test, water absorption ratio. The ruggedness test is the most important conditioning test, in this test, the mass loss rate can be determined at the same time, which can be the quality control index. The results show that the strength and durability of hard sandstone are the critical keys to the pavement performance of cement stabilized aggregate mixture. 8 tabs, 6 figs, 10 refs.

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Memo

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Last Update: 2011-10-20