What Is A Waffle Slab Or Two-Way Joist Slab? A waffle slab is a type of reinforced concrete slab that has concrete ribs running in two directions on its underside. This creates a grid pattern, hence the name “waffle.” These slabs are used for spans greater than 40 feet and are stronger than other types […]
What Is A Filigree Slab Construction? A filigree slab is a type of manufactured stone that is used for many decorative purposes. It is composed of different materials including marble, granite, or other natural stones such as limestone and sandstone. Filigree slabs are unique in their design because they come with intricately carved patterns using […]
What Is A Foam Concrete in Construction? Foam concrete is a lightweight, cement-based material made by mixing cement, sand or fly ash, water, and foam. It is typically in the form of a foam grout or foam mortar, and has a dry density ranging from 300 to 1600 kg/m3. The compressive strength of foam concrete […]
What Is A Autoclaved Aerated Concrete? Autoclaved aerated concrete (AAC) is a type of lightweight, precast concrete made from a mixture of quartz sand, calcined calcium sulfate, lime, cement, water, and aluminum powder. It is cured under heat and pressure in an autoclave and is used to make blocks, wall panels, floor and roof panels, […]
What Is A Superplasticizer in Concrete? Superplasticizers, also called high range water reducers, are chemicals used to make high-strength concrete with less water. These additives, which include purified lignosulfonates, carboxylate synthetic polymers, sulfonated synthetic polymers, and synthetic polymers with mixed functionality cementitious materials, are used in small amounts to improve the flow of concrete mixtures […]
What Is A Mass Concrete in Construction? Mass concrete is a type of concrete that has large dimensions and requires special measures to prevent cracking due to the heat generated from the hydration of cement and the resulting volume changes. The temperature within a mass concrete structure can vary greatly, leading to potential cracking, due […]
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 Hot In-Place Recycling? Hot In-Place Recycling is a method for repairing damaged pavement by heating and scarifying the existing asphalt, adding a recycling agent, and laying the new mixture over the old surface. This process is used to fix surface issues, rather than problems with the underlying structure. After the recycled asphalt has […]