Basic Mechanics Characters of Recycled Fine Aggregate Concrete

Fine aggregate can be extracted from waste concrete by series of processing. The recycled fine aggregate can then be utilized to manufacture recycled fine aggregate mortar (RFAM) or recycled fine aggregate concrete (RFAC). Air entraining agent was added in RFAM to improve its mechanical performance. The influence of the dosage of the air entraining agent on both the compressive and flexural strength of the RFAM was explored after 7 days and 28 days curing. The optimum dosage of the air entraining agent was determined.

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The Properties of Fine Recycled Aggregate Concrete Containing Recycled Bricks from Construction and Demolition Waste

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.760.193 ◽

2018 ◽

Vol 760 ◽

pp. 193-198 ◽

Cited By ~ 1

Author(s):

Kristina Fořtová ◽

Tereza Pavlů

Keyword(s):

Recycled Aggregate Concrete ◽

Construction And Demolition Waste ◽

Recycled Aggregate ◽

Partial Replacement ◽

Fine Aggregate ◽

Demolition Waste ◽

Natural Sand ◽

Aggregate Concrete ◽

Freeze Thaw ◽

Recycled Fine Aggregate

This paper presents research results of recycled fine aggregate concrete testing. The main aim of this contribution is verification of properties of fine aggregate concrete with partial replacement of fine natural aggregate by recycled masonry aggregate originated from construction and demolition waste. The influence of partial replacement of natural sand to mechanical properties and freeze-thaw resistance is described. The compressive strength and flexural strength were tested at the age of 28 and 60 days and after 25, 50, 75 and 100 freeze-thaw cycles. Partial replacement of natural sand was 0, 25 and 50 % for all these tests. Prismatic specimens were examined.

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An Experimental Study on the Workability of Recycled Fine Aggregate Concrete Cement Mortar

International Journal of Simulation Systems Science & Technology ◽

10.5013/ijssst.a.17.49.20 ◽

2016 ◽

Author(s):

Guest Editor Jianping Du

Keyword(s):

Experimental Study ◽

Cement Mortar ◽

Fine Aggregate ◽

Aggregate Concrete ◽

Recycled Fine Aggregate

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Basic Mechanics Characters of Recycled Fine Aggregate Concrete

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.446-449.2028 ◽

2012 ◽

Vol 446-449 ◽

pp. 2028-2032 ◽

Cited By ~ 1

Author(s):

Jian Geng ◽

Yong Yong Chen ◽

Jia Ying Sun ◽

Wei Chen

Keyword(s):

Mechanical Properties ◽

Particle Size ◽

Compressive Strength ◽

Elastic Modulus ◽

Fine Aggregate ◽

Aggregate Concrete ◽

Recycled Fine Aggregate ◽

Minimum Particle Size ◽

Axial Compressive Strength ◽

Mechanical Characters

In this article, the basic mechanical characters of recycled fine aggregate concrete (RFAC) are studied, and the relationships of recycled fine aggregate (RFA) content, minimum particle size and water content with them are also discussed according to results of cubic compressive strength （f¬¬cu）, flexural strength （ff）, splitting tensile strength（fts）, axial compressive strength（fc）and Yang’s modulus （Ec）. The results indicate that the use of RFA will induce mechanical properties of RFAC to deteriorate, and the deteriorated trend of it become more obviously with RFA content increased and minimum particle size reduced, in addition to, the early compressive strength of RFA develop slowly. The RFAC elastic modulus is significantly lower than ordinary concrete, besides, RFA on elastic modulus was significantly affected than other mechanical properties.

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