a Why is it important that the concrete masonry units meet certain absorption requirements?b. A portion of a normal-weight concrete masonry unit was tested forabsorption and moisture content and produced the following masses:mass of unit as received = 1.95 kgsaturated mass of unit = 2.13 kgoven-dry mass of unit = 1.91 kgimmersed mass of unit = 0.95 kg Calculate the absorption in kg/m3 and the moisture content of the unit as apercent of total absorption. Does the absorption meet the ASTM C90 requirement for absorption?

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Masonry Units

Concrete masonry is among the most surplus building materials present since a wide range of aspects can be accomplished using Concrete Masonry Units (CMU) as they have more benefits than stone or brick masonry. CMU are manufactured in a variety of shapes, colors, sizes, and patterns for various functions and finishing. Due to their modular properties, different CMU can be mixed in the same wall for various textures, colors, and so on. For the formation of the concrete blocks, cement, aggregate, and water are required.