دراسة لاسباب و حلول الشروخ في المباني وتطبيق استخدام Spall TX عالي التقنية في ترميم شروخ خرسانية دقيقة نتيجة الانکماش اللدن للخرسانة بمبنى تجاري تحت الانشاء مکون من طابق واحد بمدينة بني سويف الجديدة. A study of the causes and solutions of cracks in buildings and the application of the use of high-tech Spall TX in the restoration of fine co

The research discusses the method of treating one of the types of non-permeable and non-structural microcracks that occurred in a commercial building under construction in the city of Beni Suef. The introduction discusses some of the causes of structural cracks resulting from the lack of iron within the concrete sections in the proportions of the concrete mixture and the lack of the concrete section compared to the design section some other types of structural cracks. The research also discusses some types of cracks that occur for non-structural reasons including drop during pouring and during concrete hardening, and as a result of plastic shrinkage, which is the case Study, heat cramps. And shrinkage of drought, agitation of temperature differences and weather factors, corrosion and rust of steel reinforcement and concrete. Then making a table showing the percentages of the causes of cracks in buildings according to the year of construction starting from before 1950 to after 1980. As well as studying solutions and treatments for cracks in buildings and some types of materials used in restoration, special additives that increase the strength of concrete and strengthen it. Such as epoxy materials used in the restoration and strengthening of concrete structures, epoxy materials for cracks injection, surface-strengthening epoxy paints, epoxy paints to protect concrete surfaces, special quality concrete for restoration work, polymeric concrete, fiber concrete and polymer cement concrete. However, the applied part of the research which is a restoration study for a commercial building under construction consisting of one floor by introducing the building and mentioning what was found after examining and inspecting the building, then analyzing the faults and cracks in the building and determining the causes and quality of those cracks. Then explaining the steps taken to solve the problem, and the reason of choosing high-tech spall TX. As mentioning its specifications and some of its advantages and its use, then studying what was done in the treatment of small capillary non-permeable cracks of little width in the horizontal ceilings that were found in the ceiling slab of the first-floor slab with high-tech spall TX. Then mention research results, recommendations and references.