Thinset Mortars: These mortars are used for tile installation. Some are cement-based, others are epoxies or organic mastics. Use latex-modified thinsets and grouts when tiling outdoors. You can mix your own mortar, using the proportions shown in the table at the bottom of the page, but bagged factory mixes, though more expensive, are better in two respects: Their proportions are more accurate than on-site mixes and their ingredients are more thoroughly distributed throughout the mix.
For most do-it-yourself projects, prebagged mortar proves more cost-effective. If you do mix your own, clean sand and clean water are essential. Editor's Tip: Mortar is caustic, so always wear work gloves, long sleeves, a respirator, and safety glasses when mixing or spreading mortar. No matter what kind of masonry material you're working with, make sure you have the right mortar and that you mix it properly.
For example, the lime in most mortars stains stone so their mortars are lime-free but rich in cement. Mix the mortar for a stone wall a bit on the dry side so it's able to support the weight of the stones.
Mix brick mortar a little wetter than block mortar. For tuck-pointing, start by mixing type N mortar with half the recommended amount of water. Let it stand for an hour, then mix in the remaining water. Always ask your retailer for the mortar that meets the requirements of your project.
Type M mortar mix has the highest amount of Portland cement and is recommended for heavy loads and below-grade applications, including foundations, retaining walls, and driveways. While type M mortar provides at least 2, psi of compressive strength, it offers relatively poor adhesion and sealing properties, making it unsuitable for many exposed applications.
Type M is preferred for use with natural stone because it offers similar strength to that of stone. Type K mortar is rarely used for new construction but may be specified for restoration or other specialty applications.
It offers a very low compressive strength of only about 75 psi. Because of its softness, type K is primarily used for restoring the masonry on historic or ancient buildings that require a special mix that is not significantly stronger than the existing masonry. Actively scan device characteristics for identification.
Use precise geolocation data. Select personalised content. Create a personalised content profile. Measure ad performance. Select basic ads. Create a personalised ads profile. Select personalised ads. Apply market research to generate audience insights. Measure content performance. Mortar typically comes in neutral colors such as white, buff, and light or dark gray, but it can also be tinted to match a variety of shades.
You might choose a hue that blends in with your thin stone veneer units, one that pulls out certain shades of your natural stone, or one that offers a stark contrast. This mortar mix has a medium compressive strength and consists of 1 part Portland cement, 1 part lime, and 6 parts sand. It typically achieves day strength at approximately psi. Type N is also the preferred mortar mix for soft stone masonry as its flexibility helps to prevent cracks in the stones that stronger mortars might actually cause.
A high-tensile bond strength and a high compressive strength of over 1, psi sets this mix apart and makes it ideal for a wide range of projects at or below grade.
And that 1, psi is just the minimum compressive strength—builders often mix type S for strengths between 2, and 3, psi. These significant bond and compressive strength numbers make type S able to withstand forceful soil pressure, wind, and seismic loads.
Because of these unique properties, type S is the go-to for many below-grade applications such as masonry foundations and sewers as well as many at-grade projects.
With the highest amount of Portland cement in its makeup, type M mortar mix provides at least 2, psi of compressive strength. While this mix is ideal for heavy loads and below-grade applications such as foundations, it provides relatively poor adhesion and sealing properties.
This makes it poorly suited to many exposed applications. But mortar is the relatively easy part. The true task is picking the perfect cut and color of thin veneer to use in your project.
0コメント