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Thickness Measurement of Concrete

NDT of Thickness Measurement for Concrete

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This articles reviews some of the most accepted and widely used nondestructive tests of thickness measurement for concrete elements. Thickness measurement can be of interest for engineers and technicians involved in the assessment of existing concrete elements, such as slabs, foundations, or pavements, or as a means of quality control (QA) in the construction of new concrete pavements. The applications and limitations of these techniques are briefly compared and discussed.… Read More »NDT of Thickness Measurement for Concrete

Heating Concrete Cold Weather Concreting FPRimeC Solution

Protecting Concrete in Cold Weather

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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 protection is required in most cases.  In my previous article, we reviewed what is considered cold for concrete construction, and what should be… Read More »Protecting Concrete in Cold Weather

Setting Time of Concrete

How to Estimate The Setting Time of Concrete

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This article briefly describes the setting time of concrete, why it is important, and how different weather condition could affect it. We will later review some of existing methods that are used to estimate the setting time of concrete on-site. Setting Time of Concrete As ASTM C125-15b, setting is defined as “the process, due to chemical reactions, occurring after the addition of mixing water, that results in a gradual development… Read More »How to Estimate The Setting Time of Concrete

Earthquakes in Italy

Why Earthquakes Hit Italy and How to Reduce The Risk?

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An earthquake of magnitude 6.6 struck the center part of Italy (6 km from Norcia) for the second time since earthquake in Aug 2016. The earthquake is believed to be the strongest to hit Italy since 1800. But why is Italy so prone to earthquake? In this brief note, we will review some facts about the seismic activity in the region, the existing codes, and practice, and why collapse of… Read More »Why Earthquakes Hit Italy and How to Reduce The Risk?

Structural Effects of ASR on Concrete Structures

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Extensive mapped crack on the surface of concrete structures can be a scary observation for public, or even most structural engineers. There is a common belief among material and structural engineers that the Alkali Silica Reaction (ASR) is always harmful for a concrete structure. It is scary to drive under a ASR affected bridge. Despite this observation and speculation, no major collapse has been reported as a result of ASR… Read More »Structural Effects of ASR on Concrete Structures

inspection and evaluation of sructures

Remarks on Ontrio Structure Inspection Manual

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This article is a brief review over different aspects regarding the bridge structure inspection procedure specified in the Ontario Bridge Inspection Manual (OSIM). The inspection manual has been used for bridge inspections in Ontario since 1985 with major upgrades to the document in the year 2000. According to the bridge inspection manual (section 1.2.1), “the main goal of the structural inspections is to ensure, within an economic framework, an acceptable standard for structures in terms of… Read More »Remarks on Ontrio Structure Inspection Manual

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Maturity Method for In-Place Strength Measurement

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In this article, we will investigate the use of maturity method for in-place strength measurement. We will review the concept behind the maturity technique, and the most common practices. Later, we will describe the benefits and limitations of this method for in-place strength prediction. In the last part of this article, we will review and examine some of the existing technologies for using the maturity technique. Concrete Strength Concrete (compressive) strength… Read More »Maturity Method for In-Place Strength Measurement

Non-Destructive Evaluation of Unknown Foundations

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Non-destructive evaluation of unknown foundations and piles has gained interest among engineers and researcher over the past few years. Latest research show the effectiveness of these methods in investigating the depth and quality of existing piles, as well as in the quality assurance of new construction. Piles are structural members made of timber, steel, or concrete. Piles are used to transfer the loads of a heavy superstructure (bridge, high rise… Read More »Non-Destructive Evaluation of Unknown Foundations

inspection and evaluation of sructures

Inspection and Evaluation of Structures

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Inspection and evaluation of RC structures is the best method to evaluate the condition of infrastructure facilities. Inspection is considered the first step in any structural maintenance program. Inspection can be as simple as a recording visual condition of the structure or a more complicated one, such as a forensic study of an incident or catastrophe in order to find out about the origin and nature of deterioration and degradation. Whenever precise… Read More »Inspection and Evaluation of Structures

compressive_strength_of_concrete

How to Evaluate Compressive Strength of Concrete

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What is the best method for the measurement of compressive strength of concrete? Testing cylinders and cubes in compression is the most convenient and well-known method for measuring the strength. The main question is if one can design and develop a method that can measure the strength faster, easier, and more accurate? Can all the advancements in sensor technology and better understanding of the development of concrete microstructure can help… Read More »How to Evaluate Compressive Strength of Concrete