Evaluation of thermodynamic simulation (FactSage) for the interpretation of the presence of phases and the firing behavior of triaxial ceramics

The present work provides an evaluation of the thermodynamic calculation, using the FactSage software, which allows the study of the interaction of a system of various oxides. It started with the examination of the crystalline phases present in the raw materials indicated by the FactSage and compared with the analysis by XRD. Subsequently, the crystalline phases and the amount of liquid phase predicted by the software at different firing temperatures were analyzed. These results were compared with experimental data and records from the literature. The FactSage showed consistent results, managing to indicate the presence of the main phases in the raw materials; however, the actual and predicted secondary phases did not always coincide. The type of phase in the firing was correctly indicated, tridymite (stable phase above 867 °C), mullite and liquid phase, but their quantity in relation to the firing temperature was quite different from the experimental data.     

Revisiting the Parallel Strategy for DOACROSS Loops

Journal of Computer Science and Technology - DOACROSS loops are significant parts in many important scientific and engineering applications, which are generally exploited pipeline/wave-front...     

Synthesis of a foam ceramic based on ceramic tile polishing waste using SiC as foaming agent

Due to the large amount of ceramic tile polishing waste generated in China, the recycling of this waste residue becomes important. Herein a foam ceramic was successfully produced by using ceramic tile polishing waste as main raw material. In this research, SiC was added as the foam agent, and the foaming mechanism was also investigated. The results showed that the best dosage of SiC was 1%. Furthermore, in order to obtain a foam ceramic with better structure, the sodium phosphate was added in raw materials as foam stabilizer. The influence of this addition on the microstructure and properties of foam ceramic was investigated. It was found that the optimum additive amount of sodium phosphate is 2–3%.     

Effects of porosity,dry unit weight,cement content and void/cement ratio on unconfined compressive strength of roof tile waste-silty soil mixtures

One of the conventional ways to improve the mechanical behavior of soils is to mix them with cementing agents such as cement, lime and fly ash. Recently, introduction to alternative materials or sub-products that can be adopted to improve the soil strength is of paramount importance. Therefore, the present study aims to investigate the effects of porosity (η), dry unit weight (γ_d) of molding, cement content (C) and porosity/volumetric cement content ratio (η/C_iv) or void/cement ratio on the unconfined compressive strength (q_u or UCS) of silty soil–roof tile waste (RT) mixtures. Soil samples are molded into four different dry unit weights (i.e. 13 kN/m³, 13.67 kN/m³, 14.33 kN/m³ and 15 kN/m³) using 3%, 6% and 9% cement and 5%, 15% and 30% RT. The results show that with the addition of cement, the strength of the RT–soil mixtures increases in a linear manner. On the other hand, the addition of RT decreases q_u of the samples at a constant percentage of cement, and the decrease in porosity can increase q_u. A dosage equation is derived from the experimental data using the porosity/volumetric cement content ratio (η/C_iv) where the control variables are the moisture content, crushed tile content, cement content and porosity.     

玻化砖挂贴施工技术

结合工程实例,介绍了玻化砖挂贴施工难点,通过对铺贴的分析论证,得出该工程应采用背栓嵌入式湿贴法作为铺贴方案,并对其施工工艺及工艺要点进行了阐述,工程实践表明该施工技术具有广泛的发展前景且值得推广应用。     

浅谈人行道施工操作技术要求

介绍了人行道施工操作技术，以质量验收标准为依据，根据对材料进场，施工程序，技术要点等环节的控制，提出了几点注意事项及措施要求，有效地保证了施工质量。     

对热压复合PVC塑料地板砖加热长度变化率的探讨

加热长度变化率是国家标准规定的塑料地板砖的物理性能指标之一,目前不少产品此项指标未能达到国家标准。分析了原因,提出了从工艺着手降低加热长度变化率的方法,以及加热长度变化率的简易鉴定方法。     

干混特细砂陶瓷墙地砖粘结砂浆研究

采用保水剂、粘结剂改性,可配制施工性、粘结性、耐候性良好的特细砂瓷砖粘结砂浆。它的抗流挂性好,滑移量小于2 mm,有较充分的凉置时间,凉置20 min的粘结强度大于1.0 MPa,可满足瓷砖粘贴薄层施工的要求。采用聚丙烯纤维复合改性,可配制抗裂性较好的柔性瓷砖粘结砂浆。介绍这种新型粘结砂浆的配制原理、方法和性能。     

古建琉璃作技术（七）

中国琉璃业有悠久的历史，琉璃生产遍及祖国南北，琉璃瓦件和建筑饰物丰富多采，风格各异。本文就我国古代建筑琉璃技术的发展、明清屋面琉璃瓦件的形状与规格、琉璃瓦屋面（硬山、悬山、庑殿、歇山、卷棚、攒尖）的构造、屋面琉璃工程的操作工艺及琉璃构筑物（影壁、牌楼等）的构造与施工要点做较系统的介绍。