SBIR Phase I: Topological Interlocking Manufactured Concrete Block

这个小型企业创新研究项目的更广泛的影响/商业潜力将是由人造混凝土块制成的高性能、负担得起的结构的可用性。这些结构包括屋顶，如圆顶、拱门、圆柱体、球体等。混凝土砌块生产的高效率将被用来创造一个全新的混凝土砌块产品系列。这项新技术将有助于发展砌块制造业和建筑业，并将为最终用户提供适合多种应用的高性能、负担得起、低维护和有吸引力的高效建筑系统。这种施工方法的应用包括重要的公共基础设施工程，如桥梁、隧道、堤坝、防波堤和海堤。这项技术预计将使房主、企业以及地方、州和联邦政府机构受益。这项创新将通过优化生产过程中创建的铰接式联锁特征的强度来提高制造块的使用。该系统将在坚固和易于安装的应用中优化制造混凝土砌块的高抗压强度。由混凝土砌块制成的拱形拱顶、穹顶、球体和圆柱体的引入将为国家的社会和经济增长带来巨大的经济价值。这个小型企业创新研究(SBIR)第一阶段项目将研究在标准砌块机器上使用基准标准配合比制造互锁砌块的设计。配合比设计将随着三个变量的变化而变化：(1)水泥用量；(2)火山灰材料用量；(3)以及骨料的大小和数量。这些变量将用于提供田口阵列的高和低设置，用于分析测量的特性，包括任何组合效应。这些变量将在以下方面产生影响：微观结构评估的高低设置；关键位置混凝土制造单元(CMU)内骨料离析的影响；以及微观结构如何随水泥类型和水泥含量变化的评估。这将通过采取关键的联锁钥匙和钥匙槽功能机械试验台来实现。这项测试的结果将允许统计分析应力集中作为3个变量的函数对充模。这些数据将决定CMU内关键位置的抗弯强度和裂缝扩展的特性。这些信息将使砌块制造商能够对其混凝土配合比设计进行任何轻微调整，以确保最佳的砌块强度。

The broader impact/commercial potential of this Small Business Innovation Research project will be in availability of high performance, affordable structures made from manufactured concrete block. These structures include roofs, such as domes, arches, cylinders, spheres, and more. The high efficiency of concrete block manufacturing will be used to create an entirely new range of products from concrete block. This novel technology will help grow the block manufacturing industry, the construction industry, and will provide the end user with a high performing, affordable, low maintenance, and attractive and efficient construction system suitable for multiple applications. The applications for this construction method include significant public infrastructure works, such as bridges, tunnels, levees, breakwaters, and sea walls. This technology is expected to benefit homeowners, businesses, and local, state and federal government agencies. The innovation will enhance the use of manufactured block by optimizing the strength of articulated interlocking features created during production. This system will optimize the high compressive strength of manufactured concrete block in robust and easy to install applications. The introduction of vaulted arches, domes, spheres and cylinders made from concrete block will provide great economic value for society and economic growth for the country.This Small Business Innovation Research (SBIR) Phase I project will research manufacturing of the interlocking block design on a standard block machine, using a baseline standard mix. The mix design will be changed along 3 variables: (1) amount of cement used; (2) amount of pozzolanic material used ;(3) and size and amounts of aggregate used. These variables will be used to provide high and low settings for a Taguchi array, for analysis of properties measured, including any combined effects. These variables will have the effects of their high and low settings on evaluation of microstructure; examination of the effects of aggregate segregation within the Concrete Manufacturing Unit (CMU) at critical locations; and evaluation of how microstructure varies with cement type and cement content. This will be achieved by taking a critical piece of the interlocking key and keyway features mechanical testing rig. The results of this testing will allow a statistical analysis of stress concentration as a function of 3 variables on mold-filling. This data will determine the properties of bend strength and crack growth at the critical location within the CMU's. This information will allow the block-maker to implement any slight adjustment to their concrete mix design to ensure optimum block strength.