Use of Recycled Concrete Aggregate in Controlled Low-Strength Material (CLSM)
Abstract: Use of recycled
concrete aggregate (RCA) is getting importance as it minimizes the use of fresh
materials and eliminates waste disposal. One of the uses of RCA is as aggregate
in Controlled Low Strength Material (CLSM). This paper reports the results of the
investigation done on the use of RCA in CLSM. Various mixtures of CLSM were
made using RCA, fly ash, and cement. Tests for workability, bleeding, density,
strength, water absorption, sorption, and ultrasonic pulse velocity (UPV) were
conducted. Results show that the compressive strength ranged from 1.71 MPa to
4.92 MPa, fresh density from 1879 kg/m3 to 1998 kg/m3. The strength of CLSM
increases with the increase in fly ash; water absorption and bleeding decrease
with increase in fly ash. It is concluded that the RCA has potential to be used
in CLSM and the addition of fly ash enhances the performance.
Author: Naganathan S.,
Mustapha K.N., Omar H
Kode Jurnal: jptsipilgg120017
