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Flexural Strength of Binary Blended Concrete Made With Recycled Aggregates and Marble Dust (ME Thesis) (Record no. 68372)

MARC details
000 -LEADER
fixed length control field	03058nam a22001337a 4500
100 ## - MAIN ENTRY--AUTHOR NAME
Personal name	Engr. Wazir Ali
--	21-MESTR-11
--	Supervisor - Prof.Dr. Bashir Ahmed Memon
245 ## - TITLE STATEMENT
Title	Flexural Strength of Binary Blended Concrete Made With Recycled Aggregates and Marble Dust (ME Thesis)
260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT)
Place of publication	QUEST
Name of publisher	Nawabshah
Year of publication	2024
300 ## - PHYSICAL DESCRIPTION
Number of Pages	88p.
520 ## - SUMMARY, ETC.
Summary, etc	ABSTRACT<br/><br/>The construction industry's extensive use of concrete necessitates new infrastructure to meet evolving human needs. Consequently, the demolition of outdated or low-rise Structures generate substantial quantities of demolition waste, becoming a global environmental concern. Moreover, the demand for construction activities depletes natural resources, leading to increased quarrying for aggregates. The combination of Growing waste and high resource consumption pose environmental challenges. particularly in developing countries. Recycling and reusing demolition waste as Recycled concrete aggregates offer viable solutions. Similarly, the quarrying of marble results in the production of significant quantities of Marble Dust Production (MDP). Utilizing marble powder as an alternative material in concrete can enhance concrete's hardened properties. Marble, a Metamorphic rock, derived from pure limestone, exhibits various appearances and colors based on its purity. The marble waste generated during the cutting process can reach millions of tons, contributing to environmental problems. Utilizing MDP as a partial replacement for Portland slag cement, not only mitigates environmental pollution, but also conserves natural aggregates, reduces energy consumption, and carbon dioxide emissions during construction processes.<br/><br/>In this study, we evaluate the flexural strength of binary blended concrete composed of recycled aggregates and marble dust under two-point loading. Natural coarse aggregates were replaced with coarse aggregates from demolition waste at a 50% proportion, and cement is replaced with marble dust from 1% to 10% with an increment of 1% in each batch. We prepared 30 prisms in ten hatches of 100×100 500mm size. using a 1:2:4 mix and a 0.5 water-to-cement ratio. In addition One batch was prepared with all-natural aggregates, while the rest incorporated recycled aggregates and marble dust. Specimens were cast following ASTM specifications and cured for 28 days. After the curing period, we determined the prism weights and tested them in a universal testing machine under gradually applied loads. The results showed that Prisms with all-natural aggregates had the highest load capacity and flexural strength. It may be observed that minimum loss of strength (about 18%) at 5% dosage of the marble dust. Hence it is concluded that 5% dosage is the optimum beyond which marble dust losses its bonding properties due to which required bonding strength lowers. The strength of concrete decreases and deflection increases with increase in dosage of marble dust.<br/>
650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical Term	Department of Civil Engineering
856 ## - ELECTRONIC LOCATION AND ACCESS
Uniform Resource Identifier	https://tinyurl.com/2mf63zfr
942 ## - ADDED ENTRY ELEMENTS (KOHA)
Koha item type	Thesis and Dissertation

Holdings
Home library	Current library	Date acquired	Accession Number	Koha item type
Research Section	Research Section	29/05/2024	MP/87-1254	Thesis and Dissertation
Research Section	Research Section	29/05/2024	MP/87-1255	Thesis and Dissertation
Research Section	Research Section	26/07/2024	MP/90-1307	Thesis and Dissertation