Exam 24: Masonry Materials-I Mortar and Brick

Which of the following materials increases the mortar's cohesiveness?

ASTM specifications classify masonry mortar into Type M, Type S, Type N, and Type O. Which of these types is recommended for use in masonry foundation walls?

In an English- bond wall,

A modular brick measures 4 × 2- 2/3 × 8. What are the dimensions of: (i)stretcher face and (ii)header face of the brick?

A masonry unit that has 20% voids (e.g., 20% core hole area)is referred to as

The weathering index (WI)of a location is a function of the

What are the nominal dimensions of a modular brick?

Clay masonry units (often referred to as bricks)are manufactured either as extruded bricks or as molded bricks. Which type is more common in the United States?

ASTM specifications classify masonry mortar into Type M, Type S, Type N, and Type O. Which of these types is recommended for use in non- load- bearing interior walls?

The mortar most commonly used in an exterior masonry veneer wall is

Masonry mortar consists of Portland cement, lime, sand, and water. Portland cement plus lime (PCL)and water function as the binder that binds the sand particles together. Which of the two-PCL or sand-is greater in quantity in masonry mortar and by how much?

Which properties of a brick determine its durability grade?

Portland cement and lime (PCL)together function as the binder in masonry mortar. What is the role of lime (L)in mortar during construction?

What does the initial rate of absorption (IRA)of a brick refer to? How does the IRA value affect brick wall construction?

Describe the importance of lime in mortar.

In a running- bond wall,

In a Flemish- bond wall,

What are the actual dimensions of a modular brick?

Per ASTM standards, facing bricks are classified as Types FBS, FBX, and FBA. Which of these types has the most stringent requirements for dimensional tolerance, chippage, and warpage?

What is efflorescence in brick walls?