ABSTRACT

The North Shore Congregation Israel complex was designed by modernist architect Minoru Yamasaki and completed in 1964.

Yamasaki's notable work includes the Pacific Science Center (1962), World Trade Center (1971), and many other significant large scale projects. North Shore Congregation Israel exemplifies his early work, which included low-rise modernist structures with decorative concrete facades. Yamasaki was very interested in the design potential of precast and cast in place concrete and the materials versatility as both a structural and decorative material, as illustrated in this complex.

After several decades, spalling was observed along the edge of the architectural precast concrete panels. Previously installed concrete patch repairs were visually apparent and many were no longer serviceable. Wiss, Janney, Elstner Associates, Inc. was engaged to perform an assessment of the existing architectural precast concrete, document the extent and types of distress, and develop repair documents.

The paper will describe and illustrate the process of developing concrete repairs for North Shore Congregation Israel, including an overview of the assessment process and development of repair details, concrete cleaning procedures to address soiling and biological growth present on the building, and concrete mix design and finishing procedures to blend the repairs with the existing concrete.

摘要

North Shore Congregation Israel 综合大楼由现代主义建筑师 Minoru Yamasaki 设计，并于 1964 年完工。

山崎的著名工作包括太平洋科学中心（1962 年）、世界贸易中心（1971 年）和许多其他重要的大型项目。North Shore Congregation Israel 体现了他的早期作品，其中包括带有装饰性混凝土外墙的低层现代主义建筑。山崎对预制和现浇混凝土的设计潜力以及作为结构和装饰材料的材料多功能性非常感兴趣，如该综合体所示。

几十年后，沿建筑预制混凝土板的边缘观察到剥落。以前安装的混凝土修补修补在视觉上很明显，许多已不再可用。Wiss, Janney, Elstner Associates, Inc. 受聘对现有建筑预制混凝土进行评估，记录损坏的程度和类型，并制定维修文件。

本文将描述和说明为以色列北岸会众开发混凝土修复的过程，包括评估过程和修复细节的开发概述、解决建筑物上存在的污染和生物生长的混凝土清洁程序，以及混凝土配合比设计和修整程序将修复与现有混凝土混合。