...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Indian Journal of Science and Technology >Production of Autoclaved Aerated Concretes with Fly Ash from a Coal Power Plant in Misamis Oriental, Philippines
【24h】

Production of Autoclaved Aerated Concretes with Fly Ash from a Coal Power Plant in Misamis Oriental, Philippines

机译：菲律宾Misamis Oriental一家燃煤电厂生产的粉煤灰蒸压加气混凝土

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Objecive: To investigate the influences of CaO/SiO 2 ratio, % aluminum addition and curing time to the resulting compressive strengths of produced Autoclaved Aerated Concretes (AACs) with fly ash from a coal power plant in Misamis Oriental, Philippines as an initial activity prior to optimization using Response Surface Methodology. Methods: The production of each AAC sample was based on a Box-Behnken experimental design of the Response Surface Methodology using the parameters: CaO/SiO 2 ratio, % aluminum addition and curing time. After which, compressive strengths were obtained from these AACs following the ASTM C 109 method. X-ray Diffraction (XRD) was used to determine tobermorite phases in the samples which are the main binding phases in them. Findings: Compressive strengths of the produced AACs ranged from 2.866 to 11.843 MPa which passed the ASTM C 1693 requirement. The presence of tobermorite in all samples was a good indication for these amenable strength values. These values were observed to pass the requirement at all ranges of CaO/SiO 2 ratio and lower % aluminum addition and curing time applied. According to the ANOVA for reduced cubic model, among the production parameters, only the curing time had a significant effect to the resulting compressive strengths since p-value 0.05 but it had an inverse effect since it had a negative coefficient estimate. However, only the CaO/SiO 2 ratio had a positive effect as it had a positive coefficient estimate. The interactions between factors AB (CaO/SiO 2 ratio-% aluminum addition) and AC (CaO/SiO 2 ratio-curing time) had significant positive effects since their p-values were lesser than 0.05 and their coefficient estimates were positive. Improvement: It is recommended to conduct Scanning electron microscopy for the samples to view micrographs and validate the XRD results. The use of other production parameters like fly ash-to-cement ratio, water-to-cementitious materials ratio, curing temperature etc. and the determination of other functional properties such as flexural strength, impact strength, fire- and sound- proof properties among others are also recommended.
机译：目的：研究CaO / SiO 2比例，铝添加量和固化时间对粉煤灰生产的蒸压加气混凝土（AAC）产生的抗压强度的影响，粉煤灰来自菲律宾Misamis Oriental的一家燃煤电厂，作为初始活动之前使用响应面方法进行优化。方法：每个AAC样品的生产基于响应表面方法的Box-Behnken实验设计，使用以下参数：CaO / SiO 2比，铝添加％和固化时间。之后，按照ASTM C 109方法从这些AAC中获得抗压强度。 X射线衍射（XRD）用于确定样品中的钙蒙脱石相，它们是其中的主要结合相。结果：所生产的AAC的抗压强度为2.866至11.843 MPa，符合ASTM C 1693的要求。所有样品中均存在钙铁矿，这是这些合适的强度值的良好指示。在所有CaO / SiO 2比范围和较低的铝添加％和固化时间下，这些值均达到要求。根据用于还原立方模型的方差分析，在生产参数中，仅固化时间对所得的抗压强度有显着影响，因为p值<0.05，但由于具有负系数估计而具有相反的影响。但是，只有CaO / SiO 2比具有积极的影响，因为它具有积极的系数估计。因子AB（CaO / SiO 2比率-铝添加量％）和AC（CaO / SiO 2比率固化时间）之间的相互作用具有显着的正效应，因为它们的p值小于0.05，系数估计值为正。改进：建议对样品进行扫描电子显微镜检查，以查看显微照片并验证XRD结果。使用其他生产参数，例如粉煤灰与水泥的比率，水与胶凝材料的比率，固化温度等，以及确定其他功能特性，例如弯曲强度，冲击强度，防火和隔音性能还建议其他人。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号