实现废物利用促进循环经济发展——利用粘土浆液固化调节剂和固体建筑垃圾生产各类建筑砌块

固体建筑垃圾对环境的危害和处理利用问题,日益引起人们的重视。用固体建筑垃圾及矿山石屑等废弃物加工各类建筑砌块,既实现废物利用、节约能源,又有利环保,符合国家有关废物利用,促进循环经济发展的产业政策。     

实现废物利用促进循环经济发展

固体建筑垃圾对环境的危害和处理利用问题,日益引起人们的重视.用固体建筑垃圾及矿山石屑等废弃物加工各类建筑砌块,既实现废物利用、节约能源,又有利环保,符合国家有关废物利用,促进循环经济发展的产业政策.     

我国建筑垃圾综合利用的几点建议

分析我国建筑垃圾的利用现状 ,依据国外处理建筑垃圾的经验、技术 ,提出了针对我国国情综合利用建筑垃圾的几点建议     

粘土固化浆液性能研究

本文简要介绍了粘土固化注浆的基本知识,通过实验研究了浆液的流变模型,塑性强度及其影响因素以及试样渗透系数等性能,对浆液用于实际工程提出了一些建议。     

建筑垃圾的综合利用

通过对建筑垃圾数量的统计表明,建筑垃圾已成废物管理及环境污染的一大难题,建筑垃圾综合利用的研究与开发已势在必行;分析我国建筑垃圾的现状和组成,介绍了美日等国家有关处理建筑垃圾的一些方针政策、先进经验和处理方法,以及我国在这方面所做的一些尝试。     

我国建筑垃圾的现状与综合利用

分析我国建筑垃圾的现状和组成,介绍了美日等国家有关处理建筑垃圾的一些方针政策、先进经验和处理方法,以及我国在这方面所做的一些尝试。     

建筑垃圾处理及应用研究进展

目前城市化进程不断加快,建筑业发展迅猛,建筑垃圾的产生量十分巨大,合理地处理和应用建筑垃圾已经成为严峻的环境、生态问题。本文介绍了一些国家和地区对建筑垃圾处理与应用方面的最新研究成果,并分析和讨论了目前建筑垃圾综合处理方面存在的一些问题,为建筑垃圾的进一步研究提供了参考意见。     

我国建筑垃圾的现状与综合利用

分析了我国建筑垃圾的现状和组成，介绍了美日等国家有关处理建筑垃圾的一些方针政策、先进经验和处理方法，以及我国在这方面所做的一些尝试，以有效解决我国建筑垃圾的问题。     

粘土固化浆液固结过程的SEM研究

分析了粘土固化浆液中各组分的水化反应过程以及固化剂的催化机理,用ＳＥＭ方法研究了粘土固化浆液固结过程中的中间产物和反应产物的微观结构,证实了固化剂的催化机理。在此基础上,提出了粘土固化浆液的固结模型。     

ISS土壤固化剂的工程应用

ISS土壤固化剂系新型筑路材料 ,新的土壤固化技术。了解其材料性能、技术要求、经济效益 ,并加以应用和推广 ,是撰写本文的目的。     

隔墙板的现状及引气剂的应用

随着科学技术的发展,砖瓦部分由轻质隔墙板替代,在工程中使用越来越广泛。有些工程中发现墙板在常温下的干燥收缩较大,容易生成裂缝,产生危害。引气剂的使用能够较大改善隔墙条板的力学性能,减少干燥收缩。     

Incorporation of a nanotechnology-based additive in cementitious products for clay stabilisation

The mechanical performances and water retention characteristics of clays, stabilised by partial substitution of cement with by-products and inclusion of a nanotechnology-based additive called RoadCem (RC), are studied in this research. The unconfined compression tests and one-dimensional oedometer swelling were performed after 7 d of curing to understand the influence of addition of 1% of RC material in the stabilised soils with the cement partially replaced by 49%, 59% and 69% of ground granulated blast furnace slag (GBBS) or pulverised fuel ash (PFA). The moisture retention capacity of the stabilised clays was also explored using the soil-water retention curve (SWRC) from the measured suctions. Results confirmed an obvious effect of the use of RC with the obtained strength and swell properties of the stabilised clays suitable for road application at 50% replacement of cement. This outcome is associated with the in-depth and penetrating hydration of the cementitious materials by the RC and water which results in the production of needle-like matrix with interlocking filaments – a phenomenon referred to as the ‘wrapping’ effect. On the other hand, the SWRC used to describe the water holding capacity and corresponding swell mechanism of clays stabilised by a proportion of RC showed a satisfactory response. The moisture retention of the RC-modified clays was initially higher but reduced subsequently as the saturation level increased with decreasing suction. This phenomenon confirmed that clays stabilised by including the RC are water-proof in nature, thus ensuring reduced porosity and suction even at reduced water content. Overall, the stabilised clays with the combination of cement, GGBS and RC showed a better performance compared to those with the PFA included.     

二级湿法脱硫技术应用的现实意义和实践

1 概述上海吴淞煤气制气有限公司(简称吴煤公司,原吴淞煤气厂),生产能力达180万m~3/d,其中油制气的生产能力为100万m~3/d。过去,吴煤公司生产油煤气以低硫重油为主要原料。但是最近几年市场上低     

粘土掺量对赤泥烧结砖性能的影响

利用赤泥制备了抗压强度达到国家烧结砖标准中MU30级要求的烧结砖,并研究了粘土掺量对赤泥烧结砖性能的影响。研究表明粘土的掺入能改善坯料的可塑性,增大烧结砖的收缩,扩大烧结砖的烧结温度范围,提高烧结砖的抗压强度。     

Natural resources and economic policy in developing countries

This paper argues for the need to design broad economic policy instruments to reverse the trend in many developing countries toward increasing degradation and destruction of natural resources. The natural resource base, often critical for economic development, is in many cases threatened by a rapid population growth, the effect of which is compounded by inadequately controlled land and water use.Policy interventions which have a pervasive effect must be established to influence the environmentally-related behavior of countless, relatively small-scale, resource-using activities which take place throughout a nation's economy. Natural resource management should thus become a standard element of macroeconomic and sector analysis, and the physical linkages between sectors need to be critically examined.Governments must overcome major institutional and political obstacles. New approaches, providing incentives and rewards to policy makers, must be developed to increase interagency cooperation while avoiding overlapping jurisdictions and to prevent vested interests from paralyzing new initiatives.The views expressed in this paper are those of the author, and should not be attributed to the World Bank, to its affiliated organizations, or to any individual acting on their behalf. The paper is an adaptation of one presented at the World Conservation Strategy Conference, Ottawa, June 1986. The author is indebted to many colleagues for advice and comments, including R. Ackermann, D. Anderson, N. Myers, D. Pearce, R. Repetto, G. Schramm and E. Schuh.     

粘土掺量对赤泥烧结砖物相的影响

利用X衍射分析了赤泥烧结砖的原料:平果铝赤泥和广西本地的非田粘土,经1000℃煅烧的赤泥,不同粘土掺量的赤泥烧结砖的物相,并对物相之间的关系,以及物相与烧结砖强度的关系进行了初步的探讨。     

The housing and economic development debate revisited: economic significance of housing in developing countries

Should housing improvement be part of economic development strategies? Must housing improvement wait until high-economic growth is attained? How much priority should be given to housing in view of the limited resources in less-developed countries? What are housing benefits in economic development vis-à-vis other economic investments? These questions have generated heated debates, both in the literature on development problems and in planning and practice in the 1950s and 1960s. This paper draws on the accumulated body of knowledge resulting from past experiences in research and policy to revisit the earlier debates, survey the main lines of argument and reassess the economic potential of housing. It then attempts to generate broad policy considerations. The main contention of this paper is that in light of past and present evidence, the housing sector needs to be given serious consideration in economic growth strategies.     

软粘土远距离输送研究与应用

本以海涂软粘土的远距离输送为目的，研究软粘物料的气力输送方法及系统，研制出ＴＱ－１００型气力输泥船，并成功地应用于舟山东港工程海堤土方施工。