دراسة لانتاج مادة تستخدم لإعادة تأهيل الهياكل الخرسانية باستخدام مواد بناء محلية

Abstract

Most concrete buildings face many different conditions that allow cracks to grow in concrete structural elements, causing deviations in the main stresses of the design sections that negatively affect the life of these structures. Therefore, it is necessary to focus on the restoration, strengthening, repair, strengthening and rehabilitation of these damaged concrete buildings because of the historical, cultural or functional value that these concrete structures represent that meet the needs of the contemporary infrastructure of society and to find appropriate solutions to ensure their safety and serviceability in addition to increasing their strength and solidity and extending their life.

This study included the development of a cement material that uses locally sourced components in addition to steel fibers and some chemical additives to produce a material that reduces the various challenges associated with this task. The results were successful, in addition to the fact that the study opened other research horizons in this aspect to increase research on the best and most appropriate effective and sustainable solutions.

In this study, a set of laboratory tests were conducted that were relied upon for the research, and included testing the basic materials: cement, fine sand, water, super plasticizer additives, and silica dust, and performing a compressive strength test on regular concrete samples and samples of cement mixtures improved by adding steel fibers, the super plasticizer, and silica dust. Based on the results obtained, the study presents the possibility of obtaining an improved cement mixture that can be used in rehabilitating concrete structures and structures. The study also included some recommendations that can be used to further develop the improved cement mixture using a group of additives present within the Libyan state.