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1.
本文阐述了半刚性基层裂缝的处理方法、沥青混合料离析的处理措施、沥青混合料摊铺中的处理措施、沥青混合料碾压中需注意的问题,指出如何通过这些施工工艺措施保证半刚性基层与沥青路面的质量.  相似文献   

2.
文章结合高速工程水稳基层实践经验,分析了水泥稳定碎石基层收缩裂缝的产生原因,并提出了一些改进措施,包括改进混合料级配形式、解决水稳基层工后收缩裂缝的产生等问题,对今后相似工程的扩建具有很好的借鉴意义。  相似文献   

3.
借鉴沥青混凝土路面的施工实践,从基层准备、原材料入场、混合料拌合、混合料运输、混合料摊铺、接缝处理及碾压等各个阶段,提出保证沥青路面施工质量的有效措施。  相似文献   

4.
通过对HAL1标的水稳碎石基层的施工,笔者对影响水稳碎石混合料质量的因素及施工过程中的质量控制作了初步的总结。同时从混合料级配、水泥剂量、含水量、压实度、养护及钻芯等几方面,对水稳混合料及施工过程中的质量控制提出了几点建议。  相似文献   

5.
水稳碎石对于公路建设有着至关重要的作用,它的水泥在混合料之中的比例非常严格,并且在集料上也有着技术性的取样和调配。文章针对水稳碎石基层施工技术的控制要点进行分析和探讨。  相似文献   

6.
水稳碎石对于公路建设有着至关重要的作用,它的水泥在混合料之中的比例非常严格,并且在集料上也有着技术性的取样和调配。文章针对水稳碎石基层施工技术的控制要点进行分析和探讨。  相似文献   

7.
贾小成 《民营科技》2013,(11):134-134
在高等级公路施工中,水稳碎石是路面基层的施工方法,在路面基层施工中效果是非常好的,同时也受到了广泛的使用,水稳碎石路面基层的施工技术要在整个施工中都进行重视,在施工前要做好准备工作,同时在施工中要对混合料的拌合、运输以及摊铺都特别的重视,这样在施工中,路面基层施工才能得到更好的质量保证。  相似文献   

8.
水泥稳定砂砾作为基层材料的沥青路面普遍被采用。但采用此类结构的路面往往易出现沥青面层推移的现象,这终将对人们的生命财产安全造成重大损失。因此,探讨水稳基层结构沥青路面的面层推移的原因,提出相应的对策措施,具有极大的现实意义。  相似文献   

9.
贾兆莲 《科技与企业》2014,(1):158-158,160
橡胶沥青混合料是一种新型的沥青混合料,橡胶沥青混合料路面具有坚实、平整、抗滑、耐久的品质,同时,还具有高温抗车辙、低温抗干裂、抗水损害及防止雨水渗入基层的功能。  相似文献   

10.
孙玉国 《民营科技》2009,(1):159-159
从基层平整度的控制、热拌沥青混合料质量的控制、路面施工工艺的控制以及接缝处理的控制等几个方面分析总结出对沥青混凝土路面平整度的影响因素.并提出相应的控制措施。  相似文献   

11.
This paper outlines the ICT statistical developments that the ABS has undertaken over recent years. These developments have been on both the supply side (ICT industry) and the demand side (use of IT by sector). The content of ABS ICT surveys has changed significantly over the last few years and are expected to develop further in line with industry changes and emerging policy needs.
Recent developments in household collections have been the inclusion of IT use questions in the 2001 Census of Population and Housing and in various ABS social surveys such as Children's Participation in Culture and Leisure Activities. Annual business IT use surveys are now conducted and include topics such as Internet commerce and IT security. Biennial ICT industry surveys are conducted to provide data on ICT production, imports and exports, ICT industry employment, performance and structure information. An Internet activity survey is run every six months and provides regional Internet access details and infrastructure details on Internet service providers.
A major development for 2002–03 will be the compilation of an ICT satellite account. ABS intends to produce an ICT Information Development Plan to guide its future statistical development work in the ICT field.  相似文献   

12.
Several US counties and local governments have recently considered a novel solution to the foreclosure crisis. They plan to use eminent domain to compel the owners of mortgage debt—and specifically of private‐label mortgage‐backed securities—to sell the debt to the government at a price reflecting the loan's market value. The government would then restructure the debt and resell it to new investors. The plans are striking because—in contrast to both development‐driven eminent domain and the federal subprime bank bailout—they would force investors to assume asset devaluation and increased long‐term risk. Notably, the plans have emerged as an instance of financialization‐focused politics in suburbs and suburban cities of color, specifically majority‐black and ‐Latino/a suburbs. Local support for the plans, we argue, is rooted in the long‐term disinvestment of these ‘suburbs of exception', which became targets of subprime lending and eventually sites where the ‘financial exception' has been localized. But these demographic shifts, fragmentation and fiscal pressures have at the same time created a suburban political terrain in which the plans have gained their strongest political support.  相似文献   

13.
Serendipity – the notion of making surprising and valuable discoveries – plays a major role in the success of individuals and organizations alike. Previous research has established the importance of serendipity and identified important individual- and organizational-level antecedents. However, the literature has been dispersed and the boundaries of the concept have been blurry, leading to a lack of conceptual clarity and structure, and thus limiting validity and managerial actionability. Based on a systematic literature review, I synthesize existing management-related research on serendipity and explicate the emergence and composition of serendipity in the organizational context. I first identify three necessary conditions that differentiate serendipity from related concepts such as luck or targeted innovation: agency, surprise, and value. Then, I draw from the literature on sensemaking, event-based theorizing, and quantum-based approaches to management to conceptualize the process of cultivating serendipity in the organizational context as a process of enabling potentiality and materialization, and develop a multi-level theory of (cultivating) serendipity. This conceptualization contributes to our collective understanding of how, why, and when (i.e., under what conditions) organizations can leverage the value in the unexpected, which opens up fruitful avenues for further research.  相似文献   

14.
NGOs in Bangladesh have been recognized as effective change agents in the socio-economic arena throughout the world. Their contributions in micro credit, non-formal education and primary health care are widely known. NGOs play a significant role in society. NGO accountability, as a result, has become a critical issue. NGO accountability in Bangladesh has been examined here in relation to patrons, clients and themselves. Of the three relationships only accountability to patrons is in a near satisfactory state. Accountability to clients is handicapped by lack of opportunities of beneficiaries to participate meaningfully in NGO policy making. Accountability to themselves is adversely affected due to the adherence to a strictly hierarchical system and the influence of founding and charismatic NGO leaders.  相似文献   

15.
There has been much discussion regarding the possible decline and weakening of national systems of human resource management (HRM). Yet, culture and institutions are often cited as the major stumbling blocks to this outcome. Such constraints may dissipate in the analysis, particularly if ‘regional clusters’ are considered where geographic and cultural closeness and ‘openness’ to similar economic pressures exist. In such cases, it might be postulated that convergence in HRM will occur. We argue that China, Japan and South Korea represent such a cluster. This article examines these countries, to see if a degree of convergence is taking place and if it is towards an identifiable ‘Asian’ model of HRM. A model of change is presented that distinguishes between levels of occurrence and acceptance. Details of the development and practice of HRM in each country are then set out. The article ends with a discussion and implications section and a brief conclusion.  相似文献   

16.
A new Office for National Statistics was created in the United Kingdom in 1996 following a series of developments designed to strengthen the relevance and integrity of statistics. This paper describes these fundamental changes and sets out a blueprint for future progress. It also sets current developments in the United Kingdom in an historical and international context.  相似文献   

17.
We have considerable understanding of the obstacles that women engineers encounter and the reasons that they leave the field, but we know less about what enables them to remain. Adopting an interpretivist approach, this article examines how a group of British women engineers in two FTSE 100 companies account for “staying on” in their male‐dominated work settings. We delineate four specific forms of help that facilitate women's retention in the field. We argue that exposure to help leads to women developing a habitus that enables them to continue working in engineering. To conclude, we draw on our findings to outline HR practices that will facilitate supportive relationships in the workplace and pave the way towards developing more positive organisational climates.  相似文献   

18.
杨明 《价值工程》2012,31(7):16-17
物流业经过诸多年的发展目前已经成为最热门的行业之一,物流企业的注册数量也与日俱增,达到前所未有的规模。毋庸置疑,任何企业都希望自己迅速做强做大,并成为真正现代物流企业的典型代表,要实现这一目标一个首要问题就是要解决现代物流企业的发展观问题。  相似文献   

19.
丛广英  乔炜君 《价值工程》2010,29(6):245-245
大体积混凝土的裂缝问题是实际工程中长期困扰工程技术人员的问题,其控制技术的研究是混凝土结构研究的热点问题,具有重大的学术价值和潜伏的工程背景。  相似文献   

20.
This paper examines the effect that export composition had upon manufacturing employment in the US during the 1991 recession. Although it takes, on average, approximately $66 000 in exports to create one job, the exact gains in terms of total employment depend upon the labour-intensity of the products being exported. Foreign sales by the chemical and textile industries result in a far greater increase in employment than exports by the petroleum refining or steel industries. This analysis estimates the employment effects of manufacturing exports over the 1989-95 period, utilizing an input-output model to capture both direct and indirect effects. The results demonstrate that export composition has, at times, both strengthened and reduced demand for labour. Consequently, if job-creation is a national goal, it may be in the interests of the US to promote exports from sectors that are labour-using.  相似文献   

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