“SMC国家标准”发布

由国家建材局玻璃钢研究设计院和北京汽车玻璃钢制品总公司负责起草的“通用型片状模塑料SMC”国家标准已由国家技术监督局发布,并于1996年1月1日开始实施,其标准号为GB/T15568—1995。这是我国第一个SMC国家标准、它的实施必将对SMC生产、使用的规范和产品质     

河北省枣强玻璃钢集团SMC高密度复合材料沼气池填补国内空白

近日，河北省科技厅邀请农业部科学研究所、北京玻璃钢研究设计院、省新能源办公室等单位有关沼气、复合材料、能源等方面的11位专家，对河北省枣强玻璃钢集团有限公司承担的“SMC高密度复合材料沼气池”项目进行了技术鉴定。该项目通过对SMC高密度复合材料基料和添加改性剂、偶联剂的配方研究，提高了SMC高密度复合材料沼气池的物理、化学性能；     

S_(2511)固化制度的选择研究

一、前 言 SMC模压成型工艺是近十几年来发展速度相当快的一种玻璃钢制品的生产工艺方法。与其它玻璃钢成型工艺相比,它的显著特点之一是具有相当高的生产效率。非常适合于量大面广产品的大规模工业化生产。因此,为了充分发挥SMC工艺的这一优势,降低SMC制品的成本和补偿该工艺方法初次投资较大的不利影响,必须深入研究SMC制品在生产过程中提高其生产效率的途径和方法。在实际生产过程     

上海玻璃钢研究所引进SMC生产线

据英国《塑料橡胶》1988年第6期报道:上海玻璃钢研究所将从英国ERF Technology公司引进SMC生产线,价值近100万英镑。SMC幅宽1m。ERF Technology公司将提供SMC机组(西德Schmidt＆Heinzmann公司1988年中期正在加工)、SMC技术密诀。ERFTechnology公司与西德Schmidt Heinzma-     

SMC高密度复合材料沼气池填补国内空白

近日，河北省科技厅邀请农业部科学研究所、北京玻璃钢研究设计院、河北省新能源办公室等单位有关专家，对河北省枣强玻璃钢集团有限公司承担的“SMC高密度复合材料沼气池”项目进行了技术鉴定。     

上海将规范首批玻璃钢能源消耗定额标准

为贯彻上海市政府有关加强节能减排标准化工作指示精神。落实《上海市质量技术监督局关于下达上海市地方标准节能和资源综合利用类制修订项目计划的通知》要求,上海市玻璃、玻璃纤维、玻璃钢行业协会(简称三玻协会)日前组织了对上海地区典型玻璃钢产品能源消耗定额的调查。首批产品包括夹砂玻璃钢管道、连续制玻璃钢板材、SMC和LFTD片材。上海耀华玻璃钢、上海耀华大众新材料、上海玻璃钢研究院、上海多凯复材、上海耀华电力玻璃钢等公司     

河北高密度复合材料沼气池填补国内空白

最近，河北省科技厅邀请农业部科学研究所、北京玻璃钢研究设计院、省新能源办公室等单位有关沼气、复合材料、能源等方面的11位专家，对河北省枣强玻璃钢集团有限公司承担的“SMC高密度复合材料沼气池”项目进行了技术鉴定。     

河北高密度复合材料沼气池填补国内空白

近日，河北省科技厅邀请农业部科学研究所、北京玻璃钢研究设计院、省新能源办公室等单位有关沼气、复合材料、能源等方面的11位专家，对河北省枣强玻璃钢集团有限公司承担的“SMC高密度复合材料沼气池”项目进行了技术鉴定。     

FRP废弃物料回收处理及再利用的一条途径连云港维连FRP公司开发FRP废弃物料破碎机

连云港维连FRP制品有限公司自主研发的玻璃钢废弃物料破碎机,是将玻璃钢废弃物粉碎成粉料,作为片状团状粉料（SMC／BMC）和更多的手糊玻璃钢制品填充混合使用,实现了废弃物资源化的再利用。     

间苯二甲酸型不饱和聚酯树脂在SMC、BMC中的应用

SMC、BMC在市场上出现已有7年多的时间。各种电机部件、汽车、车辆部件、浴槽、冷却塔等有很多是用SMC、BMC做成的玻璃钢制品。特别是由于低收缩SMC、BMC的出现,使在外观上、尺寸稳定性及尺寸精度上要求严格的电子计算机、空气调     

The development of roof color in ancient China

The roof in ancient Chinese building is sloped roof which plays an important role in chromatic townscape. In earlier time, the colors in roofs were gray. With the development of technique in tiles making, tiles color was becoming colorful. However, the color usage in ancient architecture is regulated by hierarchy and the theory of five colors and five essences. Even there were a lot of colored glaze pieces in construction, only very few colors were used in royal and temple buildings' roof. Those regulations and laws made the characters of roof colors in different zones outstanding and legible. With specific color samples of different dynasties tested on site, and related laws and documentations analysis, as well as the theory of five colors and five essences, this article reports research on the characters of the roof colors in different periods, to draw out the turning points and reasons of roof color changes in crucial periods. © 2010 Wiley Periodicals, Inc. Col Res Appl, 2010     

Basalt Tuff Ceramics

Results of physicochemical and technological studies of basalt tuff as a new type of raw material for construction ceramics are considered. Tests carried out under production conditions corroborated the expediency of using basalt tuff in production of building bricks, roof tiles, and facade tiles.     

Low-melting clays from the Gzhel’skoe deposit

The physicochemical and technological properties of Gzhel’skoe deposit clays are studied. These clays can be recommended as the main material for the production of pottery and majolica products, ceramic tiles, roof tiles, art pieces, etc. Translated from Steklo i Keramika, No. 7, pp. 27–29, July, 1999.     

Effective Methods of Processing Argillaceous Materials for Building Ceramics

The use of new nontraditional methods for improving the quality of argillaceous materials (mechanical activation, modifications, ultrasonic treatment, electrochemical activation, introducing nontraditional additives, pulsation concentration, etc.) and selecting technological parameters (batch composition, granulometric composition of molding powder, firing schedule, etc.) make it possible to produce building ceramics (bricks, facing tiles, roof tiles) with improved service parameters on the basis of low-grade argillaceous materials from the Republic of Tatarstan.     

Morphology and Properties in Blended Cements with Ceramic Wastes as a Pozzolanic Material

This paper describes the research run on ceramic materials, and more specifically fired clay roof tiles, ground to a fineness suitable for use as an active replacement for portland cements (PCs). The utilization of waste products from calcined clay roof tiles as a pozzolanic material in the cement manufacture is studied. One of the first materials used as pozzolans in the history was thermal-treated clay, a material similar to the calcined clay precast elements. For this study, the materials selected are clay products that have been eliminated for different reasons: a wrong temperature inside the kiln, dimensional and mechanical failures, and durability loss. The results showed that these products have good pozzolanic properties; at an early age, the pozzolanic activity was found to be higher than fly ash, although it was lower than silica fume. The morphology of clay tile–PC pastes are similar to the morphology of the pastes containing other pozzolanic materials. Hydrated calcium aluminate products are generated when the preparation method yields less compact pastes with a greater voids' volume to accommodate these products. The hydrated calcium aluminate phases were analyzed using scanning electronic microscopy and X-ray diffraction techniques.     

Incorporation of wastes from granite rock cutting and polishing industries to produce roof tiles

The present work aimed at studying the incorporation of wastes from natural rock cutting and polishing to produce roof tiles. The sintered products incorporating the sludge were targeted to have similar or even enhanced properties in comparison to those made of a standard reference paste industrially used to fabricate concurrent products available in the market. Firstly, the raw materials, including the sludge, were characterised by particle size distribution, density, X-ray diffraction (XRD), thermal properties and loss on ignition. Different formulations were prepared to evaluate the effects of each component on plasticity of pastes, drying and firing processes, and on the final properties of the tiles. Finally, the most promising formulations were selected and characterised for sintered density, water absorption, and flexural bending strength. The results obtained made it possible to conclude about the possibility of producing roof tiles incorporating 10% of granite wastes having excellent properties (water absorption <6%, lower pyroplastic deformation index, and bending strength values of about 14 MPa and 38 MPa for the green and sintered products, respectively). Therefore, the sludge derived from the granite cutting and polishing industries can be classified as a by-product suitable to replace natural non-plastic raw material in traditional ceramic formulations. This will contribute to preserve non-renewable natural resources, while it allows minimization of the negative environmental impact due to its disposal.     

Permeability to water of sintered clay ceramics

The microstructural characteristics of sintered clay ceramics depend mainly on the clay type and thermal transformations. Different pore morphology and connectivity change the liquid water flow process through the material, as in the case of roof tiles which are progressively saturated with water during rain. In this study, 2 clays mined in Burkina Faso are used for manufacturing roof tiles. The major phases detected by X-ray diffraction in the two clays are kaolinite, illite, smectite, quartz and feldspar.The thermal behavior of clays by DTA and TG between 25 °C and 1100 °C is mainly related to individual roles of clay minerals. During sintering, dilatometry curves show successive densification stages in variable temperature ranges, as a function of clay mineral fractions in compositions. It explains differences in microstrutural characteristics and pore structure.The simulation of the capillary absorption of water uses the Sharp Front model. The interesting feature of this approach is that measurement of the data for the model requires no complex equipment. Only the Darcy permeability of the material and the steady state capillary pressure are necessary. Results evidence the strong difference of water absorption rates in the 2 clay ceramics, whereas they present similar porosity. It confirms the importance of pore morphology and connectivity in ceramics, induced mostly by the clay type and the sintering process.     

Mechanical and thermal characterization of as-received recycled polyethylene filled with rice husk and their relationship to the end use of these composites

ABSTRACT

Waste can be considered a crisis across the world, especially in the Global South where landfills are collapsing and vector-borne illnesses are increasing. Due to the increase in the amount of waste plastic in the environment, different uses of recycled plastics are being investigated. One such use is roofing tiles. This has been put in place in Sri Lanka through the Waste for Life organization. Here, recycled polyethylene is filled with rice husk particles. Due to the hydrophilic nature of the rice husk, the strength of the polyethylene composites decreased with increasing rice husk filler. Since the roofing tiles do not need to support a large load, the loss in strength should not be too detrimental. However, the creep behavior was improved with 10% and 20% filler. This is important in that the temperature on the roof can reach high temperatures.     

Circular economy and durability in geopolymers ceramics pieces obtained from glass polishing waste

The development of new building materials based on alkaline activation technology is very promising, mainly linked to products that need significant technological properties and durability due to their adverse service conditions and environmental exposure. The objective of this research was to evaluate the development of a circular economy within the scope of durability of ceramic pieces incorporating glass polishing waste aimed at the production of roof tiles, obtained by the geopolymerization process. Two methodologies to evaluate the sample's durability were studied: wetting and drying cycles; and exposure to salt spray; both simulating conditions that tiles typically face in normal conditions. Prismatic specimens were made with an alkaline solution/(metakaolin + waste) ratio = 0.26; a SiO₂/Al₂O₃ molar ratio = 3.5, 4, and 4.5; and with ambient and thermal cure at 7 days. Samples were evaluated in their mechanical strength, mass loss, and water absorption. Results showed that the SiO₂/Al₂O₃ = 4.0 ratio with thermal curing had the best behavior in aggressive conditions, and therefore, this formulation can be used for the production of tiles.     

Use of glass polishing waste in the development of ecological ceramic roof tiles by the geopolymerization process

The production process of ceramic roof tiles requires a large consumption of natural raw material, such as clay, and energy consumption in the sintering process. Thus, the objective of this research was the development of more ecological tile for civil construction, adopting the process of geopolymerization, which does not require burning, and the use of glass polishing waste, in partial replacement of natural raw material. Prismatic specimens were made with a ratio of alkaline solution/ (metakaolin + waste) = 0.26 and variation of the curing time in 7, 28, and 60 days, and a ratio of precursors with SiO₂/Al₂O₃ varying in 2.5, 3.0, 3.5, and 4.0 for the evaluation of technological properties such as apparent specific mass, linear shrinkage, water absorption, and mechanical resistance to flexion, in addition to microstructural evaluations and the physical, chemical, and mineralogical characterization of the waste. The results showed that the glass waste had potential for use as a precursor in the geopolymerization process, and that the specimens with a 7 days cure and a SiO₂/Al₂O₃ = 4 ratio are the most recommended for the production of roof tiles for civil construction.