Development and application of energy-efficient, sustainable concretes

用于隔热混凝土模板（ICF）住宅建筑的自密实混凝土混合物已经开发并进行了试验。在这些“生态混凝土”中，60-70%的粘合剂是粉煤灰;而且，与用于房屋建筑的传统混凝土相比，这些混凝土每立方米少含65-100公斤波特兰水泥。生态混凝土已经进行了初步的实验室和现场测试，最近在卡尔加里成功建造了一个复式建筑，使用我们的混合物，ICF建筑，预拌混凝土搅拌，运输和泵送。进一步的研究和开发是必要的。 建议研究的长期目标是：（1）确定用于生态混凝土的混合水泥和混凝土的工作，并可以被CSA和从业者放心地采用;（2）在特定条件下评估各种混合物的化学和微观结构性能，以解释其性能，从而证实性能和实际应用的可信度的科学基础;（3）就环保混凝土的各种结构和非结构用途，制订配合比指引和适当的建造方法。 建议研究的短期目标是：（1）建立可使用新型水泥/混凝土生态混凝土组合的特定环境;（2）评估生态混凝土对环境侵蚀的敏感性;（3）在实验室中评估各种配合比设计对现场浇筑、浇筑、修整和养护过程中出现的错误/滥用的鲁棒性;（4）为已经开发和将要开发的生态混凝土确定其他潜在应用-特别是暴露于环境的其他应用;（5）确定使用大量其他废物的可能性（例如未分类的飞灰、天然火山灰）;（6）进一步确定生态混凝土建筑在实地的可行性（通过与建筑业的支持和其他授予/合同机构的支持合作）。

Self-compacting concrete mixes for Insulated Concrete Form (ICF) residential construction have been developed and pilot tested. In these "eco-concretes" 60-70% of the binder is fly-ash; also, these concretes contain from 65-100 kg less portland cement per cubic metre, compared to traditional concretes used for house construction. The eco-concretes have had preliminary laboratory and field testing and the work has culminated in the recent successful construction of a duplex in Calgary using one of our mixes, ICF construction, ready-mix concrete batching, transportation and pumping. Further research and development is warranted.      The long-term objectives of the proposed research are: (1) to establish that the blended cements and concretes used for eco-concretes work, and can be adopted by CSA and practitioners with confidence; (2) evaluate chemical and microstructural properties of the various mixes under specified conditions in order to explain the their performance, and thus substantiate the scientific basis of performance and credibility for practical application; (3) establish mix-proportioning guidelines and appropriate construction practices relevant to a wide variety of structural and non-structural applications of eco-concretes.      The short-term objectives of the proposed research are: (1) establish specific environments within which the new cement/concrete eco-concrete combinations can be used; (2) assess the eco-concretes for susceptibility to attack by the environment; (3) assess the various mix designs in the laboratory for robustness against mistakes / abuses made during batching, placing, finishing and curing in the field; (4) establish other potential applications for the eco-concretes that have been, and will be, developed - especially other applications where there is exposure to the environment; (5) establish the potential for using high volumes of other wastes (e.g. unclassified fly ash, natural pozzolans) in eco-concretes; (6) further establish the viability of eco-concrete construction in the field (through collaborative work with construction industry support and support by other granting / contract agencies).