Concrete Waffle Slabs
From the grid pattern, we know that they are waffle slabs made of reinforced concrete. They grid pattern allows concrete ribs running in 2 directions perpendicular to each other on its underside.

As it appears in public area, dust and dirt can be found on the surface. Besides, there are imperfection at junctions between slabs.
 
Concrete Texture: Corinthian Columns
It is a concrete texture composed of Corinthian columns. Due to weathering and aging, a lot of wear and cracks appear on the surface.

Despite its name columns, this texture suits extremely well for walls and urns.
Concrete Plates
It is a concrete wall made of numerous concrete plates. Due to weathering, the concrete plates have cracks, pores and dirt.

If you are going to 3D model a concrete wall, please do not miss this texture!
 
Corrugated Metal Sheet
It is a classical corrugated metal sheet where is commonly used to build walls of factories or construction sites.

Dirt and edge wear can be found on this texture.
Stucco Plaster with Trowel Marks
This is a stucco plaster. By examining the surface, a lot of fan shape trowel strokes or marks can be found.
Corroded Iron Sheet with Rusty Scratches
This is an oxidized iron sheet on which there is numerous scratches and dents. Most of the scratches and pits corroded and are covered with rust. Besides, some of the rust is dripping down due to the rain wash.
Ground Covered with Gravel
This is a texture made of lots of gravel. It can be used as pavement for roads or to cover mud in backyard.

With your imagination, it could also be a wall texture.
Old and Worn Tiles with Star-shaped Patterns
These are classic old tiles with star-shaped patterns printed. The tiles become yellowish due to aging. The edges of tiles are worn to reveal its history.

Dirt and dust can also be found on the floor. Dents occasionally appear on some tiles.
Old Chewing Gum Texture
They are old chewing gums spitted on the floor. Some streets are full of black patches of chewed gums spilled around.

They are dark in colors as people stepped on them. This also left loads of shoe marks and dust on these gooey gums.
Seashore Rock Texture Covered by Barnacles
This is a typical rocks that can be found near seashores. It is largely covered by barnacles and mosses.

Some barnacles are alive while some have became empty shells leaving a hole.

To texture a rocky seashore? This texture is absolutely a good choice.

To achieve a better result, I'd recommend to use it with the height map as well.
French Mosaic Tiles Texture
These are fan-shaped French mosaic tiles. Their colors are made of different tonal grey ranging from light grey to dark grey.

Dirt and dust could be found on the surface.

It is a splendid material for texturing pavement or sidewalk. It can be used for wall texturing though.
Vintage Style Floor Tiles
This green and grey pattern is a classic tile which can be found in many old houses.

Yellowish dirt can be found along edges of the tiles due to aging.

Besides, dirt and edge wear appear everywhere.
Exposed Aggregate Concrete Pavement Texture
It is exposed concrete aggregate pavement. Exposed concrete aggregate is commonly used as decorative concrete. The top layer of cement paste is removed and the underlying aggregate is exposed.

This kind of concrete is very durable and skid-resistant, so it is a great material for texturing sidewalks, driveways, pool decks etc.

It is also a good substance for rough walls.
Cigarette Butts Texture on Ashy Floor
The texture contains numerous cigarette butts on ashy floor.

It can be used to texture content of ashtrays or to simulate cigarette butts scattering on the floor.

The ashy floor can turn into transparent background by using SBSAR file.
Padded Coat and Jacket Texture
This shiny silver texture is a typical material for making padded coats and jackets. The material is sewn into diamonds producing padded patterns. Each diamond pocket has some cotton inside. This ensure inner cotton is always evenly distributed.

There are also wrinkles, stitches, dirt and folds on the surface.
Asteroid or Planetary Rock Ground Texture
It is a rocky ground surface which can be found on asteroids or outer space planets.

The planetary outer shell is badly hit by millions of meteors created numerous meteor craters.

Large craters have the shapes of volcanoes while small shooting stars leave a lot of dents on the bumpy bottom base.
Chain-link Metal Wire Fencing Texture
It is a chain-link fencing made of iron or steel. It is galvanized to reduce corrosion, so it can keep its shiny silver color.

Chain-link Iron Wire Fence Texture Woven in Diamond Shape
(Metal 0017)
is similar to this material except Metal 0017 is highly oxidized and has a lot of rust.
Chain-link Iron Wire Fence Texture Woven in Diamond Shape
It is a chain-link fence made of iron or steel. Frequently, it is woven in diamond shapes which form the characteristic of this type of fences.

Due to weathering, this fence has some degrees of deformation. Rust, oxidation and dirt can be everywhere. There are some worn on wires too.
Red Brick Wall Texture Covered by Cement
It is plainly a red brick wall, but the bricks are covered by a layer of grey cement.

Parts of the cement is worn and exposes the underneath red bricks.

Damage can be found on both the concrete layer and bricks.
Sound Proof Acoustic Foam Texture
It is a sound proof material called acoustic foam. Usually, it is used to cover walls of music or live studio. It is also used in laboratory in which scientists do different sound-related experiments.

Black is the most common color for acoustic foam.
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