Other Materials That Can Replace Cement In The Production Of Concrete

Strong, lightweight green material could replace concrete ...

Nov 25, 2008· Strong, lightweight green material could replace concrete, but contains no cement Samples of Cenocell, a new material produced from coal ash. Material properties can …

Get Price
Period #10 Notes: ADMIXTURES & CEMENT REPLACEMENT ...

industrial waste products that can be used in concrete mixes to partially replace some of the portland cement. Cement replacement materials are frequently called fine minerals or pozzolans. Surprisingly, concrete with cement replacement materials can actually be stronger and more durable than concrete with ordinary portland cement (opc).

Get Price
Geopolymer: A cheaper, greener alternative for cement ...

As Kriven explains, a motive for finding a replacement like geopolymer for traditional Portland cement is environmental: Portland cement production requires a tremendous amount of energy to heat and convert the raw materials (at 1450°C), and can generate nearly one ton of CO 2 for every ton of processed cement.

Get Price
About Cement & Concrete : GCCA - gccassociation.org

Cement’s central use is to bind together the ingredients of concrete – sand and aggregates. Cement is a glue, acting as a hydraulic binder, meaning it hardens when water is added. Cement itself is a fine powder that is made by first crushing and then heating limestone or chalk, with a few other natural materials, including clay or shale, added.

Get Price
What are the Materials for Replacement of Sand in Concrete ...

Any construction site can use demolition waste. Construction demolition wastes (crushed and sieved) are basically dead mortar and concrete separated from steel, which when crushed and sieved, can replace sand to the amount of 25% in concrete mixes.

Get Price
Calcined Termite Hill Clay Powder: As Partial Cement ...

May 04, 2019· Cement is one of the components of concrete plays a great role in the construction industry. Nevertheless, it is the most expensive and environmentally unfriendly material. Therefore, requirements for economical and more environmentally-friendly cementing materials have extended interest in other cementing materials that can be used as partial replacement of the ordinary Portland cement.

Get Price
Concrete Design & Production - cement.org

Ultra High Performance Concrete (UHPC), also known as reactive powder concrete (RPC), is a high-strength, ductile material formulated by combining portland cement, silica fume, quartz flour, fine silica sand, high-range water reducer, water, and steel or organic fibers.

Get Price
HuberCrete Calcium Carbonate as a Partial Replacement for ...

result is less production of acceptable grades of fly ash for concrete producers. Other materials can replace fly ash in concrete. The most notable material is blast furnace slag. It is cementitious and pozzolanic, thus, an excellent replacement for fly ash. It suffers from a somewhat limited supply situation also, and usually at an increased cost.

Get Price
What are other alternatives for aggregates in concrete ...

Apr 05, 2015· High-density polyethylene can be added to concrete and sand as a feasible replacement for coarse aggregate. Research has shown that plastic bags that are tightly packed and then heated shrink to a size that can easily be used in concrete. But as the name implies, the material is too ductile at full strength to support structural loads at 2500psi.

Get Price
More on Pozzolans and Other Portland Cement Supplements

Apr 11, 2008· When used as a portland cement replacement, it reduces the cost of concrete, pound for pound, and increases long-term strength. Because it decreases permeability, it improves concrete's susceptibility to sulfate and other forms of chemical attack from aggressive environmental solutions.

Get Price
Scientists build stronger, greener concrete with lignin ...

Mar 22, 2013· To reduce carbon dioxide emissions from concrete production, the researchers are studying environmentally friendly materials that can replace part of the portland cement used in concrete. They are finding success using the byproducts of …

Get Price
Waste Materials Used in Concrete Manufacturing | ScienceDirect

The output of waste materials suitable as cement replacement (slags, fly ashes, silica fumes, rice husk ash, etc.) is more than double that of cement production. These waste materials can partly be used, or processed, to produce materials suitable as aggregates or fillers in concrete.

Get Price
The Use of Coconut Fibre Ash as a Partial Replacement for ...

the coconut fibre ash, which in turn was used as a pozzolana in partial replacement of cement in concrete production. Concrete cubes were produced using various replacement levels of 0, 10, 30, 50, 70 and 90 percent of ordinary Portland cement (OPC) with CFA. A total of 50 cubes were

Get Price
Concrete - Wikipedia

The use of these materials in concrete reduces the amount of resources required, as the mineral admixtures act as a partial cement replacement. This displaces some cement production, an energetically expensive and environmentally problematic process, while reducing the amount of industrial waste that must be disposed of.

Get Price
Can Portland cement be replaced by low-carbon alternative ...

Jun 10, 2018· Here we consider the carbon reduction that could be achieved by using seven alternative cementitious materials in place of Portland cement, by evaluating the CO 2eq gas emissions of Portland cement and geopolymer production and taking the whole life-cycle into account, including the transport of raw materials and the manufacturing process ...

Get Price
Changing the Environment An Alternative Green Concrete ...

conservatively limited its use as a replacement for Portland cement. Typically, fly ash is used to replace less than 25% of the Portland cement in a concrete mixture. Thus, the cementitious binding capacity of many fly ashes is being underutilized. By better understanding its behavior, many fly ashes can potentially be used in higher dosages ...

Get Price
Cement manufacturing - raw materials

Technically, a cement producer can have almost complete control over clinker composition by blending raw materials of different compositions to produce the desired result. In practice, however, clinker composition is largely determined by the compositions of the locally-available raw materials which make up the bulk of the raw meal.

Get Price
Concrete Materials - cement.org

Working Safely With Concrete; Cement & Concrete Basics FAQs; Newsroom. Engage. 2019 Cement and Concrete Fly-In Toolkit; Resilient Design & Construction Toolkit; Hurricane Resiliency Toolkit; Sustainable Cement & Concrete Manufacturing Toolkit; Sustainable Cement & Concrete Construction Toolkit; Supporters of LCCA; Hard Facts Podcast

Get Price
What is the best replacement for cement in Concrete? - Quora

Nov 07, 2016· One of the expected replacement for Cement in concrete are Lime & Surkhi . According to the kind of binding material, the mortars are classified into the following five categories: i. Lime mortar ii. Surkhi mortar iii. Cement mortar iv. Gauged mor...

Get Price
What are the Materials for Replacement of Sand in Concrete ...

With increased ban of river sand, here are the alternatives that can be used for replacing river sand in concrete mix. Read to know the materials for replacement of sand in concrete

Get Price
Alternate Cementitious Materials - Penn State Engineering

Alternative cementing materials can directly replace a portion of portland cement. These materials can be used alone or blended with other alternative cementing materials to produce a cement or concrete with properties different than those resulting from the use of portland cement.

Get Price
Reducing Environmental Impacts of Cement and Concrete ...

Aug 30, 2010· Yet producing the portland cement that binds concrete together is energy intensive and emits enormous amounts of carbon dioxide (CO 2) as well as numerous other pollutants. Fly ash can replace a percentage of portland cement in concrete, thus reducing the impacts of concrete while using a material that would otherwise be landfilled.

Get Price
Can Lime Be Replaced?| Concrete Construction Magazine ...

Suggesting that these materials are equivalent to cement-lime mortars as defined by ASTM C 270 seriously undermines the intent and assurance provided by that standard. If a product is to be a replacement, it should perform equal to or better than what it is replacing. To date, nothing surpasses the performance of lime in masonry mortar.

Get Price
Waste Materials Used in Concrete Manufacturing - Elsevier

The output of waste materials suitable as cement replacement (slags, fly ashes, silica fumes, rice husk ash, etc.) is more than double that of cement production. These waste materials can partly be used, or processed, to produce materials suitable as aggregates or fillers in concrete.

Get Price