A-Z definitions of NYC sidewalk repair terms, DOT codes, permits, materials, and construction concepts, explained by our licensed sidewalk contractors.
Showing terms in: Concrete & Paving Materials · Clear filter
Aggregate is the sand, gravel, crushed stone, or other mineral material mixed with cement and water to produce concrete....
Air-entrained concrete contains millions of tiny, intentionally formed air bubbles that improve its resistance to freeze...
An asphaltic concrete sidewalk is a pedestrian walkway constructed with asphalt instead of Portland cement concrete. Asp...
Belgian block consists of rectangular granite paving stones traditionally used for edging, streets, driveways, and decor...
Bluestone is a dense natural sandstone widely used for sidewalks, entryways, steps, and patios. It is valued for its dur...
Brick pavers are individual clay or concrete paving units installed in repeating patterns to create walkways, patios, an...
Calcium chloride is a chemical admixture sometimes used to speed the early setting and strength development of concrete....
A concrete slump test measures the consistency and workability of freshly mixed concrete before placement. The test indi...
A control joint is a planned groove or weakened line created in concrete to encourage cracking along a predetermined loc...
Crushed stone and gravel are coarse aggregates commonly used in concrete mixes and beneath pavement as structural suppor...
A curing compound is a liquid product applied to freshly placed concrete to reduce moisture loss during the curing proce...
Fiber-reinforced concrete contains small synthetic, glass, or steel fibers distributed throughout the mix to help contro...
Filter fabric is a permeable geotextile placed between soil and aggregate to separate materials while allowing water to...
Fly ash is a finely divided mineral material that can partially replace Portland cement in certain concrete mixes. It is...
Pigmented concrete is concrete colored by adding mineral-based pigments to the mix before placement. The color becomes p...
Portland cement concrete is a construction material made by combining Portland cement, water, sand, and coarse aggregate...
PSI, or pounds per square inch, measures the compressive strength of concrete after it has cured. It indicates how much...
Ready-mix concrete is concrete manufactured at a batching plant and delivered to a job site in a mixer truck. It is prod...
Rebar, short for reinforcing bar, is steel reinforcement embedded within concrete to improve its ability to resist tensi...
Recycled concrete aggregate (RCA) is crushed concrete recovered from demolished structures and processed for reuse in co...
Sand is a fine aggregate used in concrete and mortar to fill spaces between larger aggregate particles. It contributes t...
Slate is a fine-grained natural stone that splits into thin, flat layers and is sometimes used for paving, steps, and ar...
A subbase, also called a foundation course, is the compacted layer of granular material placed beneath concrete or aspha...
The subgrade is the natural soil or prepared ground beneath the pavement structure. It forms the foundation that support...
Talk to a licensed sidewalk contractor and get a free on-site inspection for your NYC property.