| 摘要 |
<p>A system and method of manufacturing synthetic construction elements that replace lumber. A synthetic composition is provided containing cementitious material (22), fibers (34), and low- density particulate material (32). At least one polymer (36) may be added to improve performance. The density of the synthetic composition is controlled by varying the volume of the low-density particulate material (32) in the mix. Reinforcement elements (16, 18, 19) are provided. The reinforcement elements (16, 18, 19) are preferably pre-stressed or post-stressed in tension. The synthetic compound is molded around the reinforcement elements to form a construction element of a particular shape.</p> |
