Process for partial restoration of a coke oven battery

A process for restoring a damaged part of a battery of coke ovens including the steps of exposing existing masonry for continued use as part of the coke ovens to provide support for flat connecting surfaces such that a lateral expansion joint for the replacement masonry forming a restored part of the coke ovens lies between such flat connecting surfaces and replacement masonry while said flat connecting surfaces form a continuous aligned surface for a horizontal expansion joint connecting with said lateral expansion joint and extending along between the replaced masonry and the existing masonry, selecting a replacement masonry comprising a masonry bridging material having a low thermal expansion property to provide essentially constant dimensional characteristics during heating thereof to the operating temperature of the coke ovens, and arranging said masonry bridging material to close and support said existing masonry while using surfaces on said masonry bridging material to form said flat connecting surfaces for providing said lateral expansion joint for the renewed part of the coke ovens.