• 主题
高级搜索  >
历史搜索 清空历史
首页> 美国卫生研究院文献>Heliyon >Reuse of fly ash and bottom ash in mortars with improved thermal conductivity performance for buildings
【2h】

Reuse of fly ash and bottom ash in mortars with improved thermal conductivity performance for buildings

机译：灰浆中粉煤灰和底灰的再利用改善了建筑物的导热性能

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务，本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文，但由于OA文献来源多样且变更频繁，仍可能出现获取不到、文献不完整或与标题不符等情况，如果获取不到我们将提供退款服务。请知悉。
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

An approach towards effective utilization of fly ash and bottom ash in the construction of energy efficient buildings has been presented in this paper. Two masonry mortar grades MM3 and MM5 were considered for trial mix. Portland pozzolana cement with substitution of sand by fly ash and bottom ash separately in different substitution ratios (SR) were adopted for preparation of test samples. Fly ash and bottom ash with lime dust and marble dust combinations were also tested as sand free mortars. 28 days compressive strength, apparent porosity, bulk density and thermal conductivity parameters were evaluated for all such samples. By analysing the test results, it was observed that all the SR combinations satisfied the minimum masonry mortar grade MM0.7, as per IS 2250. Both the MM3 and MM5 grade mortars could be produced at 60% SR by fly ash, and corresponding reductions in thermal conductivity values were 69%, and 54% respectively, while compared with conventional mortar. Sand less mortar for both the grades resulted around 57% reductions in corresponding thermal conductivity values. Overall heat transfer co-efficient (U-value) for both side plastered and rendered brick masonry wall panel was found to be reduced by 15.58%, while comparison made between conventional mix of MM5 grade and corresponding 50% fly ash substituted mix. Thus such ash blended mortar mix appears to be advantageous in building envelop application for lowering the overall cooling/heating demand of building, besides utilizing the coal ash up to largest extent and saving natural mineral sand from depletion.
机译：本文提出了一种在建筑节能建筑中有效利用粉煤灰和底灰的方法。考虑使用两种等级为MM3和MM5的砌筑砂浆进行试验混合。采用波特灰火山灰水泥，用粉煤灰和底灰分别替代砂子，并以不同的替代比（SR）代替砂子制备试样。粉煤灰和底灰与石灰粉和大理石粉的组合也作为无砂砂浆进行了测试。对所有这些样品评估28天的抗压强度，表观孔隙率，堆积密度和导热系数。通过分析测试结果，观察到所有SR组合均满足IS 2250规定的最低砌体砂浆等级MM0.7。MM3和MM5级砂浆均可通过粉煤灰以60％的SR生产，并相应减少与常规砂浆相比，热导率分别为69％和54％。两种等级的无砂砂浆导致相应的热导率值降低了约57％。发现侧面抹灰和砌筑的砖石墙板的总传热系数（U值）降低了15.58％，而MM5级常规混合物与相应的50％粉煤灰替代混合物进行了比较。因此，除了最大程度地利用煤灰和节省天然矿物砂免于消耗之外，这种掺灰的砂浆混合物对于降低建筑物的总体冷却/加热需求似乎在建筑物封套应用中是有利的。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
代理获取

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