碎石

Grading macadam with good temperature and humidity stability is laid out under tunnel pavement to drain permeability from bedrock.

具有良好温湿稳定性的级配碎石常设置在隧道路面下排出基岩上渗水。

Road engineering ; asphalt stabilized macadam base ; experimental research ; gradation design ; five control sieve design method

道路工程；沥青稳定碎石基层；试验研究；级配设计；五控制点级配设计方法

According to climate characteristics in Heilongjiang Province,the using state of lime-fly ash macadam as base layer in existing highway was investigated,and the failure reason was analyzed and compared with researched result in this paper.

针对黑龙江省寒冷的气候特点，对已建公路二灰碎石半刚性基层的使用状况进行调查，分析破坏的原因，并与研究成果进行比较。

But in the long-term use of the process, it has a few shortcomings, such as the deformation of cement stabilized macadam base become poor, it is easy to crack with the changes in temperature and humidity, the high value of the modulus, high incidence of premature.

但是在长期地使用过程中，水泥稳定碎石基层的变形能力差，在温度和湿度变化时容易开裂：模量值偏高，易发生早期破坏的缺点。

The results show that the addition of polypropylene fiber has little impact on each strength of cement stabilized macadam, but it can reduce the compressive resilient modulus and flexural elastic modulus evidently.

结果表明：聚丙烯纤维的掺入对水泥稳定碎石的各种强度影响不大，但使回弹模量和抗弯拉弹性模量有显著的降低。

The Semi-rigid Base course material made of Lime-fly-ash bound macadam has been widely used in highway construction of China for its high workability and notable economic benefits.

半刚性路面基层材料——二灰碎石以其优良的工作性能和显著的经济效益在我国道路建设中得到了广泛应用。

Combined with engineering instance,this paper analyzes the causes of the problems probably existed in paving road bed soil, grey soil and lime-fly ash macadam and in pavement construction,and proposes treatment measures in light of different problems,in order to ensure construction quality of road.

结合工程实例，对路床土、灰土、二灰碎石的铺设及路面施工中可能存在问题的原因进行了分析，并针对不同的问题提出针对性的处理措施，以保证道路的施工质量。

Based on some studies at home and abroad, with analysis on water damage in pavement, design method of subsurface drainage system is discussed in this paper, and the major technical performance indexes is introduced too. Through much theoretical analysis of laboratory experiments, mechanism properties and composition design method of porous cement-treated macadam is obtained.

本文在参考国内外研究成果的基础上，通过分析路面水损害机理，探讨了路面内部排水系统的设计方法，介绍了路面内部排水系统的主要技术性能指标，结合室内试验分析，探讨了多孔隙水泥稳定碎石材料性能和组成设计方法。

Combined with the engineering practice,the paper discussed the construction technology and quality control measures of macadam compaction pile treating with soft subgrade .

针对日照市南沿海公路软基加固的工程实践，探讨了采用挤密碎石桩处理软弱地基的施工工艺和工程质量控制措施。

40 P.m.-- scramble up and down at macadam along the Great Wall on the ridge was very difficult.

3：40 p.m。--沿着长城走并不轻松，要踩着碎石艰难地翻越一座座山头。

I will endeavour to find you some assistance.

我尽力帮你找人帮忙。

At first I only know bruck is the idol of American younglings, afterwards I returned back to Taiwan ,even in Beijing last year ,I saw her poster everywhere, I was so surprised at her charm.

起初我只晓得布鲁克雷德丝是美国少男少女崇拜的偶像，后来回台湾，甚至去年在北京，居然也四处看见她的海报，才惊讶她的魅力之大。