article thumbnail

Concrete admixture

GCP Applied Technologies

Organic water reducers – Most offered here are an aqueous solution of modified lignosulfonates containing a catalyst which promotes more complete hydration of Portland cement. Hydration stabilizer – This ready-to-use aqueous solution of chemical compounds is specifically designed to stabilize the hydration of Portland cement concretes.

Concrete 133
article thumbnail

TYPES OF CEMENT AND THEIR USES

The Constructor

Blast Furnace Slag Cement It is obtained by grinding the clinkers with about 60% slag and resembles more or less in properties of Portland cement It can used for works economic considerations is predominant. It is more costly and is used for architectural purposes such as pre-cast curtain wall and facing panels, terrazzo surface etc.,

Concrete 190
professionals

Sign Up for our Newsletter

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

article thumbnail

COMPOSITION OF REACTIVE POWDER CONCRETE (RPC)

The Constructor

Portland cement – type V 1000 kg/m3 2. Portland cement – type V 955 kg/m 3 2. This compactness gives RPC ultra –high strength and durability.Reactive powder concretes have compressive strength ranging from 200 Mpa to 800Mpa. Typical composition of reactive powder concrete 800 Mpa 1. Fine sand ( 150 – 400 micron) 5001 kg/m3 3.

Concrete 161
article thumbnail

Seven Finalist Cities Chosen For Smart City Challenge

Buisness Facilities Contributed Content

USDOT has pledged up to $40 million to one city to help it define what it means to be a “Smart City “and become the country’s first city to fully integrate innovative technologies – self-driving cars, connected vehicles, and smart sensors – into its transportation network. Transportation Secretary Anthony Foxx. Source: USDOT.

article thumbnail

Race to a Smart Future

Buisness Facilities Contributed Content

metro to fully integrate innovative technologies—self-driving cars, connected vehicles and smart sensors, among other advances—into its transportation network. The city has a broad plan for “adaptive transportation systems” that would remain useful even as technology evolves in coming years. Allen’s Vulcan Inc.

DOT 40
article thumbnail

Nature as the city: Why it’s time for a new framework to guide development

BD+C

Photo courtesy NBBJ The Introduction of New Habitat and Wildlife Corridors Cities including Portland and Oslo are exploring butterfly and bee highways and urban wildlife corridors to create safe habitat for birds, animals and other wildlife. These habitat interventions need to be connected across scale to be successful.

Green 52
article thumbnail

STRUCTURAL USES OF PRECAST CONCRETE

The Constructor

The backing concrete is made from an ordinary mix, whereas the façade may consist of a special mix, e.g. white Portland cement. However, it is used more frequently as a non-structural decorative façade. A great variety of forms, details and colours can be produced. Precast concrete cladding is not exclusive to precast frames.

Concrete 233