CONSTRUCTION MATERIALS, METHODS, AND TECHNIQUES CHAPTERS 10, 11, AND 12
TYPE N MASONRY CEMENT IS USED TO PRODUCE WHICH FOLLOWING MORTAR TYPE(S)?
ALL OF THE ABOVE
OVER MIXING MORTAR PRODUCES A NON-UNIFORM MORTAR
F
WHICH OF THE FOLLOWING MINERAL OXIDES WOULD BE ADDED TO WHITE MASONRY MORTAR TO PRODUCE MORTAR THAT IS BLUE?
COLBALT OXIDE
PROPERLY MANUFACTURED CLAY BRICK IS FIRE-PROOF.
F
WHICH SOLID FACING BRICK HAS A HIGH DEGREE OF PHYSICAL PERFECTION, WITH A MINIMUM VARIATION IN COLOR AND MINIMUM VARIATION IN SIZE?
FBX
CMU WITH UNCONNECTED PORES PROVIDE WHICH OF THE FOLLOWING PROPERTIES? (SELECT ALL THAT APPLY)
REDUCED THERMAL CONDUCTIVITY IMPROVED SOUND ABSORPTION MINIMUM PERMEABILITY
____ ARE CLAYS THAT HAVE BEEN SUBJECTED TO HIGH PRESSURES, CAUSING THEM TO BE RELATIVELY HARD
SHALES
_____ ARE CLAYS THAT HAVE BEEN SUBJECTED TO HIGH PRESSURES, CAUSING THEM TO BE RELATIVELY HARD.
SHALES
BRICKS ARE CLASSIFIED AS _____ IF THEY HAVE CORES WHOSE AREA DOES NOT EXCEED 25% CROSS-SECTIONAL AREA OF THE BRICK.
SOLID MASONRY
THE _____ IS MOST WIDELY USED FOR FORMING BRICKS.
STIFF-MUD PROCESS
DARKER BRICKS ARE SMALLER BECAUSE THEY HAVE BEEN FIRED LONGER
T
HOLLOW CLAY MASONRY UNITS (BRICK) HAVE A CORED AREA THAT DOES NOT EXCEED 40% OF THE GROSS CROSS SECTIONAL AREA OF THE BEARING SURFACE.
T
JOINT TOOLING WILL ALSO AFFECT THE COLOR OF THE MORTAR IN THE JOINT BETWEEN MASONRY UNITS - TOOLING FAIRLY HARD MORTAR WILL BE DARKER WHEN TOOLED THAN SOFTER MORTAR.
T
THE NOMINAL SIZE OF A BRICK IS THE ACTUAL SIZE OF THE BRICK PLUS ONE MORTAR JOINT.
T
CMU CONSTRUCTION IS LIMITED TO _____ COURSES PER DAY IN ORDER TO ALLOW THE MORTAR TIME TO SET AND GAIN STRENGTH BEFORE ADDING MORE WEIGHT.
10
THE TEMPERATURE OF THE MORTAR SHOULD NEVER EXCEED _____ DEGREES FAHRENHEIT.
120
WHAT IS THE MINIMUM TIME A NEWLY MADE MASONRY WALL MUST BE PROTECTED FROM FREEZING TEMPERATURES
24 HOURS
WHICH OF THE FOLLOWING CHARACTERISTICS OF CLAY MASONRY UNITS IS MOST LIKELY TO BE AFFECTED BY THE CLAYS USED, BURNING TEMPERATURE, AND CONTROLLING THE TEMPERATURE DURING THE BURN.
COLOR
THE _____ OF MORTAR DEPENDS MAINLY ON THE TYPE AND QUANTITY OF CEMENTITIOUS MATERIAL USED IN THE MORTAR.
COMPRESSIVE STRENGTH
_____ REFERS TO THE ABILITY OF A CLAY MASONRY UNIT TO RESIST DAMAGE FROM FREEZE AND THAW SUBJECTION
DURABILITY
WHICH HOLLOW BRICK WOULD BE APPROPRIATE IN AN INTERIOR WALL WHERE A SMALL VARIATION IN COLOR AND SIZE ARE ACCEPTABLE?
HBX
TYPE _____ MORTAR IS A HIGH-STRENGTH MORTAR WITH A COMPRESSIVE STRENGTH OF 2,500 PSI.
M
MASONRY CEMENTS TYPICALLY CONTAIN WHICH OF THE FOLLOWING ITEMS? (SELECT ALL THAT APPLY)
MASONRY CEMENTS TYPICALLY CONTAIN WHICH OF THE FOLLOWING ITEMS? (SELECT ALL THAT APPLY) Selected Answers:A. PORTLAND CEMENT C. HYDRAULIC LIME E. BLAST-FURNACE SLAG Response Feedback: P 187 Response Feedback: P 187
TYPE _____ MORTAR IS A MEDIUM-STRENGTH MORTAR WITH A COMPRESSIVE STRENGTH OF 750 PSI.
N
IN ORDER FOR A CMU TO BE CONSIDERED TO BE A SOLID LOAD BEARING CMU, THE LOAD BEARING AREA MUST BE _____.
NONE OF THE ABOVE
WATER RETENTIVITY CAN BE INCREASED BY AIR ENTRAINMENT, VERY FINE AGGREGATE OR CEMENTITIOUS MATERIALS.
T
TWO _____ OF CONCRETE MASONRY UNITS ARE SPECIFIED BY ASTM C90: TYPE I AND TYPE II.
TYPES
MORTARS HAVE LOW _____.
VOLUME OF CHANGE
WHICH OF THE FOLLOWING ARE THE MAJOR FACTORS AFFECTING THE BOND STRENGTH OF MASONRY MORTAR? (SELECT ALL THAT APPLY)
WHAT ARE THE CURING CONDITIONS? B. WHAT ARE THE WEATHER CONDITIONS? C. HOW GOOD IS THE WORKMANSHIP OF THE MASON? D. WHAT IS THE STRENGTH OF THE MASONRY UNITS THEMSELVES? E. WHAT IS THE QUALITY OF THE MORTAR? Response Feedback: P 191