Written by adminJanuary 6, 2017 Protecting concrete in cold weather is a continuous challenge for concrete contractors and site supervisors. Placing concrete in the cold weather condition requires special preparation and protection. All necessary precautions should be taken in order to to alleviate the negative impacts of cold weather. Special curing and
Written by adminMay 18, 2017 Extreme weather conditions (extreme heat or cold, and humidity variations) can significantly alter the quality of concrete. In hot weather concreting, one should make sure that all the negative impacts of high ambient temperature are appropriately alleviated by taking the necessary precautions. In this article, we will
Written by adminJune 19, 2017 Construction and installation of concrete pilesand deep foundations is a challenging task. Problems may occur during the process, which in turn results in defects or anomalies such as: pile formation problems, concrete faults, and reinforcement installation issues. The resulting defects can negatively impact the durability and mechanical
Written by adminAugust 4, 2017 This article describes certain construction practices that can result in integrity problems in concrete piles and drilled shafts. Defects can occur at any point during the construction of bored concrete pile. Most common types of pile integrity issues are presence of voids; inconsistency in concrete mix, concrete;
Written by adminSeptember 20, 2019 Harvesting wind energy has been of special interest over the past decade. There are approximately 300 wind farms across Canada.Wind turbine structures are very complex. While the inspection of the turbine and tower has been very well developed, the literature on evaluating the quality, integrity and reliability
Written by adminNovember 4, 2019 This technical note briefly discusses non-destructive evaluation of cold joints in concrete structures. We will review how structural engineers and quality control laboratories can utilize NDT methods to assess the quality and integrity of concrete on or around the cold joint. What is Cold Joint in Concrete?
Written by adminJanuary 9, 2020 On-site Evaluation of Concrete Strength is a main challenge in the condition assessment of existing infrastructure, or the quality control of new construction. Owners, maintenance managers of such existing concrete structures normally prefer non-destructive and non-intrusive methods to avoid further damage to an already struggling structure. In
Written by adminFebruary 10, 2020 Ground-Borne Vibration can be a serious concern for any building or structure within or adjacent to a construction zone. These structures may be potentially impacted by vibrations emanating from construction activities such as demolition, compaction, excavation, blasting, pile-driving, and operating heavy earth-moving equipment. In extreme cases, the
Written by adminSeptember 25, 2020 Nondestructive Testing have great applications in the concrete construction industry. It helps designer, construction engineers, and contractors the ability to verify the quality and integrity of built structures, identify and quantify potential defects, and record as-built condition like never before. The author has several years of combined research
Written by adminNovember 15, 2020 Extreme cold weather conditions can significantly affect the quality of concrete, as well as its mechanical properties. In cold weather concreting, one should make sure that all the negative impacts of low ambient temperature are appropriately alleviated by taking the necessary precautions. In this article, we will
