Masonry Grout Types -


Search Search ...


Materials & Systems

Career Planning


Project Management

Archtoolbox Store

Materials & Systems >> Masonry >> Masonry Grout Types

Masonry Grout Types Tweet



As you learned in our article, Mortar vs. Grout, grout is a product that fills voids so it must flow. Masonry grout is made from cement, fine aggregates, and enough water to be fluid. Grout is used for a number of purposes. Most often, it is used to tie vertical steel reinforcement to the masonry units in a block wall. Therefore, it must be fluid enough to fill all voids, but eventually strong enough to bond the steel and masonry together. Another use for grout is to add mass to a block wall to reduce sound transmission or improve the thermal mass of the wall.

Archtoolbox Products

Grout specifications are governed by ASTM C476 Standard Specification for Grout for Masonry, which provides the proportions of materials to be used. There are two main types of grout:

Fine Grout Fine grout uses aggregates that are smaller than 3/8". It will have the same compressive strength as coarse grout. However, the benefit is that fine grout will flow better between tight spaces so it should be used when reinforcing bars are close to each other. In addition, fine aggregates do not separate as easily so fine grout can be poured from a higher distance.

Coarse Grout Coarse grout uses fine aggregates, but it will also include aggregates that are as large as 1/2" in diameter. Coarse grout is used when reinforcing bars are spaced further apart and when there are larger spaces between the bars and the masonry. Coarse grout is used whenever possible since it is a more economical mix due to the fact that coarse aggregates are cheaper and take up more space.

Related Archtoolbox Articles Calculating Volume Brick Orientations

Ad - Article Continues Below

Typical Brick Bonds

M. Arch II Program in NYC

Mortar vs. Grout Masonry Mortar Joints

Newest Articles Free Online Building Codes Structural Plan Symbols FF and FL Numbers - Floor Flatness and Levelness Review: Architects' Data

Water Content in Masonry Grout The amount of water in a grout mixture is very important because the grout needs to flow easily, but it also needs to

Fire Department Key Box

achieve a proper compressive strength. In addition, the masonry units will immediately absorb some of the water in the mix so that needs to be taken into account for the grout mix to remain fluid. When placing grout in a hot and dry climate, it is very important to take the water content into account.

Grout Admixtures Additives can be included in the mix to help achieve certain properties that may not be possible with traditional mixes. It is important that admixtures be included only when specified because they can affect the compressive strength of the grout. Specifiers should consult a structural engineer prior to using admixtures. Non-Shrink additives will prevent the shrinkage that occurs as water is absorbed from a mix. The admixture will expand as water evaporates or is absorbed by adjacent materials. Non-shrink grout is most often used to transfer compressive force across a void between two structural members. Plasticizers replace water in a grout mix in an effort to keep a fluid mix with a limited amount of water. The reduction in water will allow the grout to develop a higher compressive strength. A retarder will slow the set time of the grout. This will allow the grout to remain fluid and workable in extremely hot or dry weather conditions. An accelerator will make the grout set faster than normal. This is typically used in very cold conditions to prevent ice crystals from forming in the grout and to reduce the amount of time that the construction needs to be protected from the cold. Ad - Article Continues Below

Specifying Grout As with mortar, masonry grout is specified by using either the performance method or the proportion method. It is important that the specifier understand the structural requirements that the project must adhere to so that the grout can be specified correctly - when in doubt, be sure to consult a structural engineer. A Performance Specification will dictate a compressive strength that the grout must achieve after having set for 7 days and also the final compressive strength after 28 days. The performance specification requires laboratory tests to confirm the mix will perform as needed, so it is used only in the most critical situations. Most often, a Proportion Specification is used. In this case, the specifier will identify the amount of cement, aggregates (fine and coarse), water, and any additives required. The quantities are specified by either weight or volume. Since this allows the mix to be created in the field without further testing, it is the most common specification method.

Masonry Grout Manufacturers Masonry Products Masonry Grout

Help make archtoolbox better. If you found an error or out of date information in this article, please let us know.

Archtoolbox Monthly Newsletter: Website updates, industry news, career growth, and more. Sign up now! Email Address

First Name

Last Name

Signup Now

Helpful Tools for Architects and Building Designers

Bluebeam Tools and Templates

Best Architecture Books

Architecture News

Tool sets, hatches, line types, stamps,

Our list of the top reference books for

An architecture news aggregator that

and templates for Bluebeam Revu.

architects - these are the ones we have

pulls news stories from a series of

on our shelf.

popular architecture websites.

More Information About Archtoolbox Contact Advertise on Archtoolbox

Display and/or use of the information contained within this site constitutes acceptance of the Terms of Service. It is important that all local codes and standards are adhered to. Please consult a professional architect, engineer, consultant, or agency for advice about specific projects, buildings, conditions, codes, and/or regulations.

Terms and Privacy Info Archlinks News Archimat: Manufacturers Site Map

Copyright © Arch Media Group LLC


Masonry Grout Types -

Search Search ... Representation Materials & Systems Career Planning Search Project Management Archtoolbox Store Materials & Systems >> Masonr...

283KB Sizes 2 Downloads 10 Views

Recommend Documents

masonry grout - The International Masonry Institute
TYPES OF GROUT. Grout is classified into two types according to ASTM C. 476 - fine grout and coarse grout. Fine grout us

Mortar as Grout for Reinforced Masonry - National Concrete Masonry
Mortar used as grout for reinforced masonry for grout in commercial construction is a topic of major interest to many ma

Grout injection of masonry - KU Leuven
Grout injection of masonry, scientific approach and modeling masonry will regain its monolithical behavior and the overa

crack repair of unreinforced masonry walls with grout injection - LADBS

MASONRY - ALBERT PIKE - LUCIFER. Nothing thrills the anti-Mason as much as Pike's references to Lucifer which most of th

supporting masonry work
Apr 16, 2005 - (KudoZ) Spanish to English translation of ayudas de albañilería: auxiliary / ancillary / supporting mason

Grout Hog
Honda Motor. Maintenance. Repair & Safety. X. X. X. X. Auger. Replace. Clean. Hydraulic Hoses &. Discharge Hose. Replace

Grout - Wikipedia
Grout is a particularly fluid form of concrete used to fill gaps. Grout is generally a mixture of water, cement, and san

High, Low and In-between: An Update on Grout for Masonry
Jul 24, 2006 - Grouting techniques have been developed to ensure that walls are completely grouted. Section 1.16.1 of th

Download free Masonry Estimating Sheet to estimate your Masonry
This FREE Estimating & Takeoff Spreadsheet comes with the purchase of our Excel plug-in for Electronic Plan Takeoff Meas