Fresh concrete is characterized as a completely mixed concrete in a rheological state
before it begins to set. In this stage (almost initial 48 h) the concrete is in its plastic stage
beginning from mixing operations to concrete surface finished process. This stage
determines the quality and durability of concrete, and also the strength and efficiency
of the concrete structure later; it also has impact on construction speed. Fresh concrete
is simply a transient stage, but it is important to see that quality, durability, and strength
of concrete is truly influenced by the level of its compaction.
The consistency of fresh concrete indicates that the mix can be transported, placed,
compacted, and finished effectively and easily without segregation of its ingredients.
This chapter is devoted to the properties of fresh concrete incorporating plastic
waste as aggregate. The fresh properties of concrete with plastic waste as aggregate
from experimental work data will be presented and compared with similar existing
literature, if found. These properties will be discussed in three main sections: mix proportion
and design, workability of fresh concrete, and early age properties represented
by its unit weight (fresh density).
تاريخ النشر
25/01/2019
الناشر
Woodhead Publishing Series in Civil and Structural Engineering
د.نهلة ناجي هلال | Dr NAHLA NAJI HILAL | 12552