Determining material characteristics of "Rammed Earth" for structural design of sustainable insulated walls

确定“夯土”的材料特性，用于可持续隔热墙的结构设计

• 批准号: 478162-2015
• 负责人: Gupta, Rishi
• 金额: $ 1.78万
• 依托单位: University of Victoria
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2015
• 资助国家: 加拿大
• 起止时间: 2015-01-01 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=579334
• 关键词: Determining; material; characteristics; Rammed; Earth

Concrete is one of the most widely used construction materials and has CO2 emissions associated not just with the manufacturing process of cement, but also transport of ingredients over long distances. One solution is to use reduce the amount of transportation required in shipping these ingredients and/or the finished material. One of the building materials, Rammed Earth (RE) also known as "Pisé de terre" and when rammed is used with a cement additive, it is known as "cement-stabilized soil." This material is becoming a popular construction material for constructed insulated and non-insulated walls that offer high thermal mass and insulation and can further help reduce the cost of heating/cooling over the life of the structure. However, the structural performance of such engineered walls is not fully understood. Moreover, the design parameters including material characteristics and the associated statistical variation is a not available. UNISOL Engineering Ltd (UEL) has identified the specific need to standardize the process of molding specimens to determine the compressive and flexural characteristics of the material and to understand the boundary effect of ramming. There is also a need to understand the formwork pressures that could be used to design safe and economical formwork. UEL has identified the benefit of studying the effect of various cement and fly-ash/metakaolin (both industrial wastes) contents on the limit state conditions and on the modulus of elasticity- in compression, tension and bending. UEL is also looking to understand the effect of the environment on short-term durability of RE. In this project rammed earth specimens will be constructed and the material characteristics of the specimens will be studied

混凝土是最广泛使用的建筑材料之一，其二氧化碳排放量不仅与 水泥的制造过程，以及远距离的配料运输。一种解决方案是 使用减少了运输这些成分和/或成品材料所需的运输量。一 在建筑材料中，夯土（RE）也被称为“Pisé de terre”，当夯实时， 水泥添加剂，它被称为“水泥稳定土”。“这种材料正在成为一种流行的建筑 用于建造隔热和非隔热墙的材料，其提供高热质量和隔热，并且可以 进一步有助于降低在结构的寿命期间加热/冷却的成本。 然而，这种工程墙的结构性能还没有完全了解。此外，设计 包括材料特性和相关统计变化的参数不可用。Unisol 工程有限公司（UEL）已确定的具体需要，标准化的过程中，成型标本， 确定材料的压缩和弯曲特性，并了解 撞击还需要了解可用于设计安全和 经济模板。UEL已经确定了研究各种水泥的效果的好处， 粉煤灰/偏高岭土（均为工业废物）含量对极限状态条件和 弹性-在压缩，拉伸和弯曲。UEL也希望了解的影响， 环境对稀土的短期耐久性的影响。在该项目中，将建造夯土样本， 将研究试样的材料特性