Title:
Strength Properties of Cement-Stabilized Municipal Solid Waste (MSW) Incinerator Ash Masonry Bricks
Author(s):
Mujahid T. Ali and W. F. Chang
Publication:
Materials Journal
Volume:
91
Issue:
3
Appears on pages(s):
256-263
Keywords:
abrasion; absorption; compressive strength; flexural strength; fly ash; stabilization; wastes; water; Materials Research
DOI:
10.14359/4331
Date:
5/1/1994
Abstract:
This research was carried out to determine the strength and durability of bricks made with municipal solid waste incinerator fine ash, using cement and limestone screenings. The ash was obtained from a waste-to-energy (WTE) facility as a combined ash (CA) in Miami, Florida. Different cement contents ranging from 4 to 10 percent were used. The results confirmed that bricks with high compressive strength and modulus of rupture (MR) can be produced under static compaction pressure of 6 and 12 ksi (41.37 and 82.74 MPa) using nominal amounts of portland cement. The soaked compressive strength and modulus of rupture were also improved by adding small amounts of cement. A 28-day air-dry compressive strength as high as 7500 psi (51.71 MPa) was obtained at 40 percent ash and 10 percent cement contents. Modulus of rupture above 750 psi (5.171 MPa) was also achieved in this investigation. The bricks also showed excellent resistance to abrasion and a lower water absorption.