Waste materials are added to the ingredients of interlocking concrete masonry as a partial replacement for cement or sand to minimize resource depletion and environmental degradation while enhancing interlocking masonry characteristics. Rubberized concrete interlocking bricks (RCIBs) are newly developed interlocking masonry units, however, their bed-joint behavior is complex owing to the presence of waste materials and geometric imperfections. This study aimed to investigate the behavior of the dry-bed joint under compression and out-of-plane loading. Seven single-joint prisms (SJPs), five multiple-joint wallets (MJWs), and three RCIB hollow wall panels (HWPs) were prepared and tested under axial and out-of-plane lateral loading, respectively. The local contact stiffness of the bed joints in SJPs was found to be half of the stiffness of the prisms when the joint surface areas were almost in full contact. The maximum variation in the joint closure of the MJWs (0.68 mm) was 3.8 times higher than that of the SJPs (0.18 mm) owing to the multiple effects of contact-area irregularities and height differences between adjacent bricks. All the tested MJWs and SJPs exhibited similar joint-closure behavior during their initial compressive loading stages up to ∼0.65%–0.85% and 0.5%–0.7%, respectively, of the ultimate load. With a joint opening of 10.38 mm, the RCIB-HWPs achieved an ultimate lateral loading of 11.70 kN. The largest out-of-plane lateral loading validated the efficiency of the interlocking keys, which reduced brick slippage under lateral loading, indicating RCIB-HWPs stability.

将废料添加到联锁混凝土砌体的成分中，作为水泥或沙子的部分替代品，以最大程度地减少资源消耗和环境退化，同时增强联锁砌体的特性。橡胶混凝土联锁砖（RCIBs）是新开发的联锁砌体单元，但是由于存在废料和几何缺陷，它们的床缝行为很复杂。本研究旨在研究干床接头在压缩和平面外载荷下的行为。分别制备了七个单关节棱镜 (SJP)、五个多关节钱夹 (MJW) 和三个 RCIB 空心墙板 (HWP)，并分别在轴向载荷和面外横向载荷。局部接触刚度当关节表面区域几乎完全接触时，发现 SJP 中的床接头刚度是棱柱刚度的一半。由于接触面积不规则和相邻砖之间的高度差的多重影响，MJW 的接头闭合的最大变化（0.68 mm）是 SJP（0.18 mm）的 3.8 倍。所有测试的 MJW 和 SJP 在其初始压缩载荷阶段表现出相似的接头闭合行为，分别高达极限载荷的 0.65%–0.85% 和 0.5%–0.7%。RCIB-HWP 的接头开口为 10.38 mm，达到 11.70 kN 的极限横向载荷。最大的平面外横向载荷验证了联锁键的效率，这减少了横向载荷下的砖滑动，表明 RCIB-HWPs 稳定性。