Hot pressing technology investigation of light-weight wooden brick

Abstract

Sustainable material in the field of construction promotes the efficient utilization of wood industrial and agricultural residue. In this study, calcium hydroxide, corn stalk, and poplar wood fibers have been compacted into the light-weight wooden bricks by the hot pressing method to improve the performance of bricks and production efficiency. An experimental investigation is undertaken to study the effects of hot pressing temperature, time, and pressure on the properties of the light-weight wooden brick. This paper presents the results of how the initial and final compressive strength, density, moisture content, elastic recovery rates, and drying shrinkage rates change. The results show that hot pressing temperature influences the initial and final moisture contents great significantly. The hot pressing time has a great significant impact on squeezed water mass, initial moisture content, length and thickness elastic recovery rates, length and thickness drying shrinkage rates, and the initial and final compressive strength. Meanwhile, the final moisture content, length and thickness elastic recovery rate, and final compressive strength are extremely significantly affected by compressive pressure. Moreover, the compressive strength of dry brick increases when hot pressing temperature and pressure rise. Our study might provide the basis for optimizing hot pressing temperature, time, and pressure.