Purpose of Review

In this paper, the authors review the available literature on the manufacture and usage of hardwood cross-laminated timber (CLT) and discuss the technical and economic feasibility of hardwood CLT including procurement issues.

Recent Findings

CLT is an emerging building system in North America that has attracted the attention of construction professionals, developers, and researchers across the continent, due to its environmental, economic, and esthetic advantages, among others. Today, however, virtually all CLT structures are manufactured using softwoods, yet, there is growing interest in the possibility of manufacturing CLT using a variety of hardwood species. To date, most studies on the feasibility of hardwood CLT are motivated by a desire to find high value-added uses for underutilized or low-valued hardwood species but there is also an interest in benefitting of specific mechanical properties of selected hardwood species.

Summary

Research on hardwood CLT is scarce, though findings from existing studies suggest that it is technically feasible and the resulting product offers interesting perspectives for specific applications. However, for hardwood CLT to become a reality, the hardwood industry needs to overcome significant challenges, some of which are discussed in this paper.

中文翻译：

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美国的交叉层压木材：硬木的机会吗？

审查目的

在本文中，作者回顾了有关硬木交叉层压木材（CLT）的制造和使用的现有文献，并讨论了硬木CLT的技术和经济可行性，包括采购问题。

最近的发现

CLT是北美新兴的建筑系统，由于其在环境，经济和美学优势等方面的优势，吸引了整个非洲大陆的建筑专业人士，开发商和研究人员的注意。但是，如今，几乎所有CLT结构都是使用软木制造的，然而，人们越来越有兴趣使用多种硬木来制造CLT。迄今为止，关于硬木CLT可行性的大多数研究都是出于寻找未充分利用或低价值的硬木树种的高附加值用途的愿望，但也有兴趣受益于所选硬木树种的特定机械性能。

概要

硬木CLT的研究很少，尽管现有研究表明该技术在技术上是可行的，并且所得产品为特定应用提供了有趣的观点。但是，要使硬木CLT成为现实，硬木行业需要克服重大挑战，本文将讨论其中的一些挑战。