The Avalon Mall parking facility is a four level above grade structure, consisting of three suspended parking levels (approximately 7,750sq.m. each) and one on-grade parking level connected to the existing mall with a new pedestrian bridge. RJC was the structural engineer of record. During construction of the parking structure extensive cracking of the suspended parking garage slabs was noted at two of the 24 pours. RJC undertook a visual assessment of the parking slabs in question to determine the extent of the noted cracking and determined over 750lin.m. of cracks ranging in size from 0.5mm to 6.5mm in width. Following the visual assessment destructive testing of the concrete was undertaken to determine its in-situ properties as well as to understand the full extent of the cracking.
Panel Discussion to examine the effects of and responses to the COVID-19 pandemic across the various aspects of our industry and in the different parts of the United States.
Panel Discussion to examine the effects of and responses to the COVID-19 pandemic across the various aspects of our industry and in the different parts of Canada.
Industry questions related to moisture-related floor covering and coating failures will be answered by the presenter during a 1-hour webinar. Questions will come from ICRI members through a survey conducted prior to the webinar and PPT slides addressing the questions prepared by the presenter. Questions from webinar attendees will also be answered during the webinar.
This exciting new publication has been sought for years, and it fills a need for a practical and current guide on evaluating, testing, and, where needed, repairing existing masonry. The book provided background, reference material, and guidance to design professionals, building owners, and contractors on existing masonry. Construction characteristics of masonry structures, typical material properties, and analytical approaches are included for historic, transitional, and modern masonry construction typologies. The main focus of the book is structural stabilization, strengthening, and retrofit with maintenance and serviceability items (such as water penetration and cleaning) addressed as subtopics.
Matching concrete sounds simple, but there are many factors that affect color, texture, and aesthetics. There is often a challenge with using modern cementitious materials for matching older and historically manufactured cements. Whether your project is historic or contemporary, this presentation will outline materials and methodology that are important to understand when concrete matching is important. With many mid-century buildings coming of repair age, this is a critical time for understanding these concepts. The presentation will include the fundamentals of concrete materials, how cementitious materials affect concrete color, how to use color measurement technology in developing a color match mix design, how aggregate exposure affects aesthetic perception, and other helpful tips when it comes to matching concrete for durable and aesthetic results. Regionally available materials will vary, but the methodology for color matching durable repairs is fundamentally the same.
Concrete is the most widely used construction material and can be durable for hundreds of years; however, the main cause of concrete deterioration is from corrosion of reinforcing steel. Steel is thermodynamically unstable and will eventually oxidize to a lower energy state. The rate of deterioration in new and existing structures can be modeled to predict the service life based on the severity of the service environment, the concrete quality, the ingress of deleterious materials, and other factors to various degrees of success. This presentation will provide an overview of many of the service life models currently in use and provide an evaluation protocol for their application related to both new and existing structures.
This demonstration will show the repair of cracks in concrete using structural polyurethane injection without pumps, ports or cutting, featuring Roadware 10 Minute Concrete Mender and Easy Injection System. This no cutting method generates almost no dust making silica dust mitigation much easier.
Sikalastic One Shot products, Sikalastic-720 One Shot & Sikalastic-726 Balcony One Shot, will be demonstrated. Sikalastic One Shot products are an innovation in traffic coating membranes that replace the need for a base coat and multiple top-coats in a single step. These products re-imagine how traffic coating systems are designed with a polyurethane resin that has both a flexible crack-bridging ability and is extremely durable. Sikalastic-720 One Shot is a one coat system of 45 mils with a proprietary aggregate blend designed for vehicular traffic. Sikalastic-726 Balcony One Shot is a primer-less single step polyurethane system of 35 mils with a proprietary integral texture designed for balconies and pedestrian traffic....