What Is Concrete Oxidation? Concrete oxidation is a form of corrosion triggered by exposure to oxygen. It occurs when air containing oxygen enters the pores in concrete and reacts with the embedded steel reinforcement, causing it to rust and expand. This expansion puts pressure on the outer portion of the concrete, often causing cracking and […]
What Is an Exfoliation Weathering? Exfoliation is a type of weathering that occurs when thin, curved layers of rock peel off from the surface of a rock mass. This can create dome-like hills and rounded boulders. Exfoliation typically occurs along lines called joints, which are located at or near the surface of the rock and […]
What Is Flow Table Test In Concrete? The Flow Table Test, also referred to as the Slump Test, is a method used to evaluate concrete consistency and workability. This test is performed by filling a standardized metal mold with freshly mixed concrete, then operating a specialized plunger which applies pressure to flatten the sample. A […]
What Is An Aggregate Base in Construction? The aggregate base is a type of construction material that is made up of crushed rock particles that are small enough to pass through a screen with 20-millimeter (mm) holes. It can be composed of either newly mined rock or recycled asphalt and concrete. Aggregate base is used […]
What Is A Tuckpointing? Why Is Tuckpointing Necessary? Tuckpointing is a technique that involves using two different colors of mortar to create the appearance of very thin mortar joints in brickwork. The mortar is typically chosen to contrast with the color of the bricks giving the illusion of finely detailed joints. In some parts of […]
What Does Pozzolanic Mean? Pozzolanic refers to a type of material which, when combined with water and lime, forms a cement-like material known as ‘pozzolana’. This can be an artificial material derived from volcanic ash or industrial by-products, or a natural material like diatomaceous earth. The pozzolana cement can be used for various construction purposes […]
What Is A Lime Mortar? Lime mortar is a mixture of lime, an aggregate such as sand, and water, used in construction. It was used by the ancient Egyptians and Greeks and in ancient Indian and Roman structures. It has been used less in recent times due to the widespread adoption of Portland cement which […]
What Is A Wrought Iron? rought iron is a type of iron alloy that has a very low carbon content and is known for its malleability, ductility, and resistance to corrosion. It is made by hammering, rolling or otherwise working iron while it is hot enough to expel molten slag, which gives it a grainy […]
What Are Mortar Joints? Mortar joints are seams between two masonry blocks or bricks which are filled with mortar, a mixture of cement, sand, and water. The mortar provides a strong bond between them and prevents water from seeping into the walls, providing stability and insulation. Mortar joints play an important role in the overall […]
What Is A Frost Weathering? Frost weathering is the process by which water freezing in ice causes mechanical weathering, which can take various forms, such as frost shattering, frost wedging, and cryofracturing. It can occur over short or long periods and at different scales, from breaking apart individual mineral grains to shattering large boulders. This […]