浅谈埃及米黄类石材病症的治理

埃及米黄类石材在铺装施工和日常使用中,经常会出现一些比较特殊的问题,而且解决起来具有相当难度。例如:"长毛"(针状结晶物)、"黑斑"、"纹线部位凹陷"等,最严重的是出现大面积崩碴现象(这些现象大部分发生在多水环境,湿法安装的地面、墙面部位,有地暖的地面也表现严重)。     

事与愿违的洞石装修——从中央电视台新台址洞石装修谈起

<正>一、引子2013年5月23日,应中央电视台邀请,笔者和有关专家就该台新址(号称"大裤衩")石材装修出现病症赴该台现场踏察。中央电视台新台址位于北京东三环路北京10号地铁金台夕照站东侧。本次装饰石材须治理的工程共涉及三部分:建筑主体部位的外墙裙、大楼内多层地面、地下部位地面。这些石材面积数量分别不等,总共约有3.9万m~2。1、央视装饰石材工程的病变诊断与分析     

“大理石”一词的定义和历史背景

定义在意大利的法定用语中，“大理石工业”一词包义的大理石比其他广义的大理石更“大理石”。实际”。这个定义主要是告诉我们这种岩石的来源和组成成类似这样的定义：“一种石灰质的岩石，或者与之类“硅酸岩”的岩石（其成分与石灰质的差别很大），例雪花石膏出现在“有关石灰质的石材”的条目下，而含了石膏成分的又形成了另一个单独的组群，虽然它们也还是石材工业的产品。那么就有必要更加明确石材的特性，否则人们就会]石）。、“蛇纹岩”、可以偶然见到一些意欲精确分类的称法与“石材”石”、“大理石和花岗石以及类似的石材”、…     

如何做好地铺石前的石材护理

地面铺设的石材在施工前进行养护处理是十分重要的,而且对护理的要求很高!若不进行石材的预护理,势必带来以下十分常见,但又束手无策,甚至被称为石材“癌症”的病症,这些病症将严重破坏石材的装饰效果,甚至导致一些负面效应。 (一)水斑 水斑俗称花脸,是在石材表面尤其在石材拼接处出现湿痕常年不干,甚至在高温干燥天气下依然没法消失的现象。这种病症在浦东机场、北京国际机场的     

石材可见病变分类与表面清洗维护琐谈

一、石材可见病变及分类 所有的石材,只要暴露于大气当中,就会出现病变现象。为了很好保护历史文化遗产,特别是为保护好和天然石材有关的历史文化遗产和现代建筑,意大利有关研究机构按照NORMAL 1／85规范中的定义,根据各种病变对石材产生的作用,将天然石材上出现的病变现象做出了如下分类,并注明了每一种形式病变的相关定义。     

家装千万当心基底

家庭装饰工程的饰面层以上(或以下)的部位,称之为“基底”,业内人士也有称之为“基层”的。在施工过程中由于基底不符合要求,常常出现一些质量问题,严重地影响了饰面层的观感效果和使用功能。在潮湿的抹灰层基底上刷油漆、涂料,经过一段时间,表面就会出现脱皮、皱皮、咬色等缺陷。在抹灰层基底上裱糊壁纸,由于基底平整度、垂直度差,过于潮湿,壁纸就粘贴不牢固,且影响美观。地面的基底清理不干净,饰面的石材或地板砖就会空鼓。木地板、木墙裙的基底潮湿,面层     

立足北方辐射全国面向世界中国(莱州)石材工贸城打造中国石材贸易第一品牌

素有“中国北方石材出口基地”、“中国石材之乡”之誉的山东省莱州，依托石材资源优势和集散地优势，在石材行业发展比较集中的柞村镇规划建设“中国（莱州）石材工贸城”，倾力打造中国石材贸易第一品牌。　　中国（莱州）石材工贸城规划总投资10亿元，占地5.13平方公里，集石材加工、石料交易批发、石材产品展示、机械设备及磨料磨具展示、餐饮服务等“五位一体”，分加工区和贸易区两大部分。　　加工区占地面积2.96平方公里，主要以石材加工业为依托，集中发展大规模、现代化的石材企业。目前累计投入1800万元，水、电、讯等配套设…     

对地铁内装饰石材防护施工的探讨

地铁内石材施工时石材出现病变的可能性非常大,据初步调查全国有超过60％的地铁内石材都不同程度的出现了病变。其原因很多,有的人认为是防护剂没有做好,或认为没有做防护处理等。其实不然,施工单位都做了防护处理,而且做的比较认真,但为什么还会出现石材的病变呢？主要原因一是没有理解防护剂在石材防护过程中的原理,二是地铁内的装饰石材离地面有10多米,石材内部的防护层不能够支撑外部水份的压力,已冲破了防护层,使水份进入了石材内部,从而产生了石材的病变。     

优良的腾冲火山石

针对多年来一些人对天然石材持有的偏见,如认为天然石材污染、破坏环境、耗费资源,甚至还不断呼吁抛弃使用天然石材以保护环境的这种现象,意大利有关部门对室外石材地面和其他材料地面进行一番实地调查对比．以使用所得出的科学数据来说服那些对天然石材具有非理性偏见的人士。调查结果表明,天然石材对环境的影响在每一项污染指标上都大大低于其他地面材料。     

日前举办的"2007中国石材新矿种发布会"上传出信息——用石材新品种拓展国内外市场

由中国石材工业协会主办的“2007中国石材新矿种发布会”上，出现了“立席”比“坐席”多的景象。约有200多位国内外石材界、新闻媒体人士对石材新矿种表现出兴趣，也吸引了第十四届中国（北京）国际石材产品及石材技术装备展会上的参观者。因为新矿种意味着新产品及市场，所以说是新矿种吸引了与会者，一定程度上反映了石材市场的发展与变化。正如中国石材工业协会会长邹传胜在致辞中所说，石材每一个新矿种的开发与推广，对拓宽国内市场、扩大国际市场、推动我国石材业的发展都具积极意义。     

浅析高速公路工程招投标中的最低评标价法

结合目前高速公路施工项目招投标活动的实际情况,阐述了最低评标价法的概念,归纳了其优点及存在问题,对完善最低评标价法提出几点策略,以期促进招标投标市场更加规范有序。     

Place-Making in Megaprojects in Melbourne

This article analyses state-led place-making practices in Melbourne. The two levels of government that influence planning in Melbourne make much of the city as ‘culturally vibrant’ and ‘creative’, and have incorporated creative city-inspired place-making principles into many layers of the planning system. An examination of the development of two mixed-use megaprojects in central Melbourne reveals however that ideals of culturally engaging public places, and indeed of creative landscapes for middle-class consumption, wither in the face of more basic imperatives for economic development. In these case studies the ‘creative city’, no matter how the idea is interpreted, has little traction either as a set of inclusive place-making principles or as a gentrification strategy. The article concludes that the creative city-inspired place-making objectives in the planning system at both state and local levels are ambiguous in their overall intents and completely unsupported by statutory controls. Such place-making objectives as are realised are the compromised results of the interplay of uncoordinated decisions, delivered at the pleasure of the developer.     

Pathogens in septage in Vietnam

Septage is widely acknowledged as a major source of infectious pathogens while disposal of septage, and the operation and maintenance of septic tanks, is not regulated in many developing countries. Twenty untreated septage and septage sludge samples were taken from Can Tho City, Vietnam to examine their pathogen content, and indicator micro-organisms. Escherichia coli and Enterococcus spp. were detected in all samples, regardless of sludge storage time. Phages were detected in 80% of samples. Salmonella spp. were detected in 70% of the untreated septage and 60% of septage sludge samples. Concentrations of phages and bacteria tested in septage sludge after many years of tank storage were much higher than the expected levels. Helminth ova were present in 95% of untreated septage samples with an average of 450 ova l^− 1, and were detected in all septage sludge samples with an average of 16,000 ova l^− 1. Twelve varieties of helminth ova were identified. More helminth ova varieties in higher concentrations were found in septage than those reported from stool samples. The varieties' frequency ranged from 10% to 50% and Ascaris lumbricoides predominated. Results show that pathogens and indicator micro-organisms, especially helminth ova, accumulate in sludge. Thus helminth ova should be considered when septage sludge is treated and used for agriculture. Proper health protection measures must be applied for people handling septage.     

新时期广东城市化的新特点

新时期广东城市化出现以下特点:知识源导向、城市由单体向群体化发展、产业集群推动、政府主导自上而下的集约化发展、城镇化向城市化转变、由重“数量”发展向重“质量”发展的转变。     

在市场中实践在实践中学习在学习中进步--工程公司市场化进程的回顾与展望

近两年来，工程公司在提高市场竞争意识、推动市场化进程中做了大量工作，其中坚持走出去的方针是我们自我加压、推行加快市场化步伐的一个重要战略步骤。     

新形势下高校强化基建财务管理的探讨

在市场条件下高校基建财务人员在加强日常财务管理的同时,必须树立起高度的工作责任心,抓好事前监督、事中监督、事后监督三个环节,全面理解、贯彻执行《高等学校财务制度》,管好用好各项基本建设资金,提高基建财务管理水平,更好地完成高校各项基建任务,以有限的投资,最快的建设速度,获得最大的投资效益。     

Experiences in radon-safe building in Finland

A study was made of radon-safe buildings in 300 Finnish low-rise residential buildings using data obtained from a questionnaire study. The study also aims at finding the main defects in design and implementation and how the guidance given on radon-safe buildings in slab-on-grade houses has been followed. According to the guidelines, the prevention of the flow of radon-bearing air from the soil into the house is recommended to be carried out through installation of aluminised bitumen felt and use of elastic sealants. Second, as a precaution perforated piping should be installed in the subsoil of the floor slab. The median indoor radon concentration in the houses was 155 Bq/m3. This is 32% lower than the median of the estimated reference values. The action level of 200 Bq/m3 was still exceeded in 40% of the houses. In most houses with slab-on-grade the prevention was based only on the installation of a sub-slab depressurisation system. Sealing was performed in a low number of houses. In 80% of houses with a sub-slab piping connected to an operating fan, radon concentration was below the action level of 200 Bq/m3. In houses with piping but no fan, the corresponding fraction was only 45%. Sub-slab piping without a fan had no remarkable effect on radon concentration. In houses with crawl-space and edge-thickened slabs, radon concentrations were low. The choice of foundation system thus significantly affects the indoor radon concentration. The importance of complete and careful sealing work should be stressed in advice and guides concerning radon prevention.     

浅谈我国工程项目建设成本控制存在的问题

结合目前我国施工企业工程项目成本管理现状,对工程项目成本管理过程中存在的问题进行了较详细的分析,并提出了一些解决问题的办法,以做好项目成本控制工作,进而增强企业经济实力。     

2008年日本火灾情况

<正>1火灾总数在2008年(1～12月),日本发生的火灾总数为52 394起,与2007年相比减少了2 188起(4.0%)。这相当于平均1天大约发生143起火灾,每10min发生一起火灾。火灾类别(见表1)。     

Variation in property taxation in Tulsa

Conclusions It may be reasonably concluded from this study that the range of variation in these ratios of assessed to actual value are of a reasonable size for the great majority of cases. The frequency distribution of these sample ratios was not normal, however, as was assumed a process of this type would produce. On the other hand, the failure of the regression analysis to identify any significant variables which would explain these variations would tend to re-enforce the assumption that the fluctuations were indeed of a random nature.To sum it up in one paragraph, aside from a few extreme cases, the assessing process appears to give estimates which are more consistent than would be expected under the assumption that any errors would be of a random nature, but the regression analysis was unable to isolate any particular socioeconomic characteristics which would explain the variation which was present.Financial support for this research project was furnished by the University of Tulsa.