Building System Based on Foamed Concrete Cast Between Stay-in-Place Cement-Board Forms

摘要

In January 1995 a Construction Productivity Advancement Research (CPAR) program agreement between Materials Technology Ltd. (MTL), Reno, NV, and the U.S. Army Engineer Waterways Experiment Station (WES) was initiated. The purpose was to develop a new system of building walls for residential and light- utility buildings. The new approach used stay-in-place, fiber-reinforced cement- board forms with foamed or cellular concrete cast between the forms. An immediate goal of the research was to prepare a formulation for cellular concrete that could be cast between cement-board forms in lifts as thick as 2.42 m and to optimize the mixture in terms of cost and strength. The project also involved investigating the compatibility of the formulation that was developed with the cement board and developing the optimum system for placing the foamed concrete in the forms. WES collaborated with the industry partner in developing an improved panel spacer and form tie system and further assisted by developing a versatile, low-cost panel fastening system that can be used with the stay-in- place forms. Because of the potential benefits of this developing technology for both the Federal Government and the private sector, this research on a new building system was well-suited to the CPAR Program.