• Home
  • Locations
  • Contact Us

The Shelly Company

Get A Quote

Email Us
info@nullshellyco.com

  • Products
    • Asphalt
    • AgLime
    • Limestone
    • Ready Mix
    • Sand and Gravel
  • Resources
    • Calculators
    • Equipment Auction
    • Forms
  • Services
    • Construction
    • Delivery Services
    • Project Estimating
  • Sustainability
    • Community
    • Education
    • Environment
    • Green/LEED
    • Quality
    • Safety – #1 Priority
    • Wildlife Habitat Sites
  • Company
    • President’s Message
    • History
    • Executive Team
    • News
    • Awards
    • Project Profiles
    • Companies
    • Partnerships/Links
  • Careers
    • Benefits
    • Current Openings
    • Shelly Internship Program
    • Our Culture
  • Get A Quote
  • COVID-19 Updates
    • Facebook
    • Instagram
    • LinkedIn
    • Twitter
    • YouTube
Home / The Shelly Co. News / How is concrete made from limestone?

How is concrete made from limestone?

January 29, 2014 By e3admin

Limestone is common a rock that makes up about ten percent of all sedimentary rocks. Limestone is made up of calcite aragonite. A lot of limestone comes from skeletal fragments of marine organisms. Throughout history, many people have recognized limestone’s potential and used it for a building material. The great pyramids of Egypt, among many other landmarks, are constructed of limestone. It was also very popular in the Middle Ages, due to its hardness, durability, and availability. Many medieval churches and other structures still standing are made of limestone. Limestone is also used as a pigment in toothpaste.

In addition to the value of limestone slabs quarried for building materials, limestone is also used in cement. A discussion about cement requires a distinction between cement and concrete: although the two terms are often used interchangeably. Cement is simply one of the ingredients of concrete, which is also made of sand and bits of gravel or crushed stone. Cements makes up between 10% to 15% of concrete’s total mass; though of course the exact proportions may vary from one mixture to the next, depending on the type of concrete is being made.

To make Portland cement—the most common type of cement—powdered limestone is heated in a rotary kiln. As a source of calcium, it joins with powdered clay to produce a product called clinker, which is then ground with a source of sulfate, like gypsum. It is mixed with water, sand and crushed rock to create concrete. The water, added through a process called hydration, starts the chemical reaction that causes the cement to harden and set, holding all of the ingredients together as concrete. Before the concrete is allowed to harden, the concrete mix must be poured into a mold so that it will harden into the desired shape. You don’t want a free-flowing blob of concrete to harden, do you? Alternately, the cement can be mixed with just sand and water to create mortar, which is used to join bricks together.

Concrete and mortar made of limestone can react to the carbon dioxide in rainwater and wear away. The resulting damage takes the form of gaps between bricks and buildings, which must be repaired by filling in the gaps. Burning fossil fuels can increase the rain’s acidity, which further damages limestone. Acid-based cleaning chemicals can also be harmful.

Filed Under: The Shelly Co. News

Recent News

  • Third Annual Maumee Open House
  • Ready Mix Division Creates Hall of Fame
  • Shelly Southern Division earns national safety award
  • Shelly hosts first internal women’s forum
  • Stoneco Maumee Quarry 2nd Annual Open House
  • The Shelly Company and local community members celebrate tunnel opening
  • Local business owner sends a letter during a recent construction project
  • Shelly presents Rocks Build Our World program

80 Park Drive
Thornville, OH 43076
info@nullshellyco.com

Company

  • Company
  • Locations
  • Resources
  • Sustainability
  • Contact Us

Products

  • Asphalt
  • AgLime
  • Limestone
  • Ready Mix
  • Sand and Gravel

Services

  • Construction
  • Delivery Services
  • Project Estimating
  • Get A Quote
  • Facebook
  • Instagram
  • LinkedIn
  • Twitter
  • YouTube

Employee Portal | Career Opportunities
Copyright © 2021 The Shelly Co. All Rights Reserved.

Serving Ohio Since 1938
  • Home
  • Products
    ▼
    • AgLime
    • Asphalt
    • Limestone
    • Ready Mix
    • Sand and Gravel
  • Resources
    ▼
    • Calculators
    • Equipment Auction
    • Forms
  • Services
    ▼
    • Construction
    • Delivery Services
    • Project Estimating
  • Sustainability
    ▼
    • Community
    • Education
    • Environment
    • Green/LEED
      ▼
      • Electric Power Conservation
      • Porous Asphalt Pavement
      • Recycled Oil
      • Shingle Recycling
      • Warm Mix Asphalt
    • Quality
    • Safety – #1 Priority
    • Wildlife Habitat Sites
  • Company
    ▼
    • President’s Message
    • History
    • Executive Team
    • News
    • Awards
    • Project Profiles
    • Companies
    • Partnerships/Links
  • Careers
    ▼
    • Benefits
    • Current Openings
    • Shelly Internship Program
    • Our Culture
  • Get A Quote
  • Locations
  • Contact Us
  • COVID-19 Updates