[1]张红春,李小重..集料有效密度及混合料合理体积参数计算方法研究[J].郑州大学学报(工学版),2006,27(04):53-57,115.[doi:10.3969/j.issn.1671-6833.2006.04.014]
　ZHANG Hongchun,Li Xiaozhong.Research on the calculation method of effective density of aggregate and reasonable volume parameters of mixture [J].Journal of Zhengzhou University (Engineering Science),2006,27(04):53-57,115.[doi:10.3969/j.issn.1671-6833.2006.04.014]
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集料有效密度及混合料合理体积参数计算方法研究()
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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
27卷
期数:
2006年04期
页码:
53-57,115
栏目:
出版日期:
1900-01-01

文章信息/Info

Title:
Research on the calculation method of effective density of aggregate and reasonable volume parameters of mixture

作者:
张红春; 李小重.
长安大学公路学院,陕西,西安,710061, 河南省交通规划勘察设计院,河南,郑州,450052
Author(s):
ZHANG Hongchun; Li Xiaozhong
关键词:
沥青混合料;  集料有效密度;  最大理论密度;  空隙率
Keywords:
DOI:
10.3969/j.issn.1671-6833.2006.04.014
文献标志码:
A
摘要:
体积参数是沥青混合料设计的基础,但由于集料对沥青的吸收,使得最大理论密度既不能准确测量,又不能准确计算,从而影响了体积参数计算的准确性.提出了用沥青浸渍进行集料有效密度测定的试验方法.试验结果表明,对于改性沥青混合料,按照新颁布实施规范中的公式计算集料有效密度是不合理的,而用沥青浸渍法测量结果复现性好,对试验条件要求不高,试验人为因素影响小.用沥青浸渍法实测的集料有效密度能够计算得到沥青混合料最大理论密度的真值.对连续密级配沥青混合料试件空隙率组成进行了理论分析,提出合理的试件密度测定方法,并提出了沥青混合料体积参数计算公式.
Abstract:
Volume parameters are the basis of asphalt mixture design, but due to the absorption of asphalt by aggregate, the maximum theoretical density can neither be accurately measured nor accurately calculated, which affects the accuracy of volume parameter calculation. A test method for determining the effective density of aggregates by bitumen impregnation was proposed. The test results show that for the modified asphalt mixture, it is unreasonable to calculate the effective density of the aggregate according to the formula in the newly promulgated implementation specification, while the measurement results by asphalt impregnation method have good reproducibility, do not have high requirements for test conditions, and have little influence of test human factors. The effective density of aggregate measured by asphalt impregnation method can calculate the true value of the maximum theoretical density of asphalt mixture. The porosity composition of continuous dense grade asphalt mixture specimens is analyzed theoretically, a reasonable specimen density determination method is proposed, and the calculation formula of asphalt mixture volume parameters is proposed.

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更新日期/Last Update: 1900-01-01