Testing of cementitious roofing tile specimens using marble waste slurry

ABSTRACT

This research deals with replacing proportions of cement and aggregate with Marble Waste Slurry (MWS) as a partial weight in cementitious roofing tiles production. The research is based on an experimental study of roofing tile specimens produced with ordinary Portland cement (OPC) replaced by 5%, 10%, 15%, 20% and 25% (MWS), and roofing tiles produced with sand replaced by 5%, 10%, 20%, 30% and 40% (MWS). The marble waste slurry was dried at a temperature of 200ºC for 6 h.

Physical and mechanical tests were performed to evaluate the performance of the green roofing tile specimens among which were: particle size distribution, water absorption, transverse breaking strength, compressive strength, permeability, freezing and thawing, as well as efflorescence investigations.

For all mechanical tests conducted, roofing tile specimens containing MWS as a partial replacement for cement and sand were within the ASTM standard limits (ASTM C1492/2003 (Reapproved 2016) till 20% replacement ratio.

All tile specimens containing Portland cement resulted in efflorescence.

KEYWORDS:

• Marble slurry
• cementitious roofing tiles
• waste management

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

This work was supported by the National Research Centre, internal project no.: 11070208.

Notes on contributors

Mostafa E. Allam

Mostafa E. Allam Associate Prof. Civil Engineering Department National Research Centre.

Shereen K. Amin

Shereen K. Amin Associate Prof. Chemical Engineering Department National Research Centre.

Gihan Garas

Gihan Garas Professor of Waste Management Civil Engineering Department National Research Centre.