Final answer:
When mortar is specified using proportion specification, various solid materials that can constitute masonry mortar are proportioned based on their proportions by mass. This ensures consistent quality and strength of the mortar in masonry construction.
Step-by-step explanation:
When mortar is specified using proportion specification, various solid materials that can constitute masonry mortar are proportioned based on their proportions by mass. This means that the different components of the mortar, such as sand, lime, and water, are mixed in specific ratios by their mass.
For example, if the proportion specification for mortar is 1:2:1 (sand:lime:water) by mass, it means that for every 1 part of sand, 2 parts of lime, and 1 part of water are used in the mixture. These proportions ensure that the mortar has the right consistency and properties for its intended use in masonry construction. The use of proportions by mass ensures that the mortar has consistent quality and strength, as the ratios of the solid materials are maintained regardless of the batch size or the specific amounts used. This allows for predictable and reliable performance of the mortar in masonry applications.