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A bughole (or pinhole) is a small hole in the surface of a concrete structure caused by the expansion and eventual outgassing of trapped pockets of air in setting concrete. [1] [2] [3] Bugholes are undesirable, as they may compromise the structural integrity of concrete emplacements.
Grass pavers being used for a permeable driveway in the Netherlands. Permeable solutions can be based on porous asphalt and concrete surfaces, concrete pavers (permeable interlocking concrete paving systems – PICP), or polymer-based grass pavers, grids and geocells.
They live in colonies and can have runways about one to two inches wide, with four to five flat entrance holes to the burrows concentrated in a small area. Voles feed and tunnel day and night ...
Sidewalks are a common form of hardscaping. Hardscape is hard landscape materials in the built environment structures that are incorporated into a landscape. [1] This can include paved areas, driveways, retaining walls, sleeper walls, stairs, walkways, and any other landscaping made up of hard wearing materials such as wood, stone, and concrete, as opposed to softscape, the horticultural ...
Concrete carbonation can be visually revealed by applying a phenolphthalein solution over the fresh surface of a concrete samples (concrete core, prism, freshly fractured bar). Phenolphthalein is a pH indicator, whose color turns from colorless at pH < 8.5 to pink-fuchsia at pH > 9.5. A violet color indicates still alkaline areas and thus non ...
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Some materials used for driveways include concrete, decorative brick, cobblestone, block paving, asphalt, gravel, resin-bound paving, and decomposed granite. These materials may be surrounded with grass or other ground-cover plants. Driveways are commonly used as paths to private garages, carports, or houses. On large estates, a driveway may be ...
This process results in roughly spherical concretions that grow with time. In the case of pervasive growth, cementation of the host sediments, by infilling of its pore space by precipitated minerals, occurs simultaneously throughout the volume of the area, which in time becomes a concretion. Concretions are often exposed at the surface by ...