APA Precast Concrete Batch Plant Operator
Questions And Answers
Architectural concrete ...ANSWER...concrete that is intended to be used as an exposed
interior or exterior surface
exposed aggregate finishes ...ANSWER...created by removing the cement paste from
the surface and exposing the aggregates by scrubbing and hosing of concrete surfaces
quickly after the beginning set of concrete
methods to change the texture of architectural concrete after curing ...ANSWER...1.
sandblasting
2. rubbing with abrasive stones
3. smooth grinding
4. hammering with flat, pointed or toothed masonry hammers
what does architectural concrete require ...ANSWER...1. new/clean forms
2. careful attention to construction methods or the finish may be damaged
3. protection, since architectural concrete is often completed early in the construction
process
structural precast elements ...ANSWER...slabs, beams, girders, columns, and wall
panels
why was precast initially developed ...ANSWER...to save cost and time on construction
projects
advantages of precast concrete ...ANSWER...1. convenient casting at ground level
2. mechanization of mixing and pouring procedures
3. able to accomplish the casting under shelter in severe weather conditions
precast over sitecast concrete advantages ...ANSWER...1. able to achieve higher level
of control on material quality and craftsmanship
2. lower formwork cost per unit of finished concrete due to a higher durability of
formwork
3. faster erection process
Questions And Answers
Architectural concrete ...ANSWER...concrete that is intended to be used as an exposed
interior or exterior surface
exposed aggregate finishes ...ANSWER...created by removing the cement paste from
the surface and exposing the aggregates by scrubbing and hosing of concrete surfaces
quickly after the beginning set of concrete
methods to change the texture of architectural concrete after curing ...ANSWER...1.
sandblasting
2. rubbing with abrasive stones
3. smooth grinding
4. hammering with flat, pointed or toothed masonry hammers
what does architectural concrete require ...ANSWER...1. new/clean forms
2. careful attention to construction methods or the finish may be damaged
3. protection, since architectural concrete is often completed early in the construction
process
structural precast elements ...ANSWER...slabs, beams, girders, columns, and wall
panels
why was precast initially developed ...ANSWER...to save cost and time on construction
projects
advantages of precast concrete ...ANSWER...1. convenient casting at ground level
2. mechanization of mixing and pouring procedures
3. able to accomplish the casting under shelter in severe weather conditions
precast over sitecast concrete advantages ...ANSWER...1. able to achieve higher level
of control on material quality and craftsmanship
2. lower formwork cost per unit of finished concrete due to a higher durability of
formwork
3. faster erection process
