STTR Phase I: Lightweight Concrete Interlocking Masonry Blocks

这个小型企业技术转让(STTR)第一阶段项目的更广泛的影响/商业潜力是通过使用新型充气联锁砖石单元(AIMU)来提高无粘结砂浆的砖墙干式堆叠安装的工地安全性。AIMU多构件墙体系统结合了木材和混凝土的优点，可能适用于中层多户住宅，这是美国和世界各地经济适用房存量的关键组成部分。这些AIMU可以快速、安全、准确地铺设，在美国和全球范围内减少成本效益建设的时间和劳动力。拟议的建筑平台将提高耐久性，并提供比标准木质墙体建筑更低的使用寿命成本。这个小型企业技术转移(STTR)第一阶段项目将进一步开发一种使用无粘结砂浆的干式堆叠砖块的建筑技术。加气联锁砌块(AIMU)是由多孔轻质混凝土(CLC)和活性粘结剂制成的。拟议的工作将进行测试，以确认AIMU填充入侵和阻止不规则的能力，评估互锁特征之间的界面剪切阻力，并评估通过压力或水分激活的界面粘合力。这些基本特性对于解决干叠砌块施工技术转化的主要障碍至关重要。该项目还将展示快速室外干叠AIMU安装。该奖项反映了NSF的法定使命，并通过使用基金会的智力优势和更广泛的影响审查标准进行评估，被认为值得支持。

The broader impact/commercial potential of this Small Business Technology Transfer (STTR) Phase I project is to improve job-site safety of dry-stacking installation of masonry walls without binding mortar through the use of novel Aerated Interlocking Masonry Units (AIMU). The AIMU multi-component wall system combines the advantages of wood and those of concrete and is potentially applicable for mid-rise multi-family housing, a key component of affordable housing stock in the US and worldwide. These AIMUs can be laid quickly, safely, and accurately, reducing time and labor for cost-effective construction in the US and globally. The proposed construction platform will improve durability and offer lower lifetime costs than standard wood-based wall construction.This Small Business Technology Transfer (STTR) Phase I project will further develop a construction technology using masonry blocks via dry-stacking without binding mortar. Aerated Interlocking Masonry Units (AIMU) are made of cellular lightweight concrete (CLC) and an activated adhesion. The proposed work will conduct testing to confirm the AIMU's ability to fill incursions and block irregularities, evaluate interfacial shear resistance between the interlocking features, and evaluate the interfacial adhesion activated through pressure or moisture. These fundamental properties are critical to resolving the primary barriers for translation of dry-stack masonry construction technology. The project will also demonstrate rapid outdoor dry-stacking AIMU installation.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.