Effect of Curing Time and Liquid Alkaline Activators on Compressive Strength Development of Fly Ash and Bamboo Leaf Ash-Based Geopolymer Concrete

PR Rangan, M Tumpu, AT Arrang… - GEOMATE …, 2024 - geomatejournal.com
Substitute materials are used to modify the properties and characteristics of concrete, for
example, to increase strength and improve performance (workability) in concrete. Waste …

Assessing open-graded asphalt's resistance to degradation via cantabro test in hot-mix cold laid asbuton

S Gusty, SN Ahmad, M Tumpu - GEOMATE Journal, 2024 - geomatejournal.com
Petroleum asphalt, also known as Asbuton, can be substituted with natural asphalt sourced
from Buton Island. This natural asphalt, known as Asphalt Buton (Asbuton), is abundant in …

Silica quartz characteristics from local silica sand on compressive strength of mortar

M Tumpu, PR Rangan - Civil Engineering Journal, 2024 - civilejournal.org
Many minerals, including quartz sand, granite, and feldspar, contain silica (SiO 2), a
substance that performs the same function as quartz. Silicate (SiO 2), the primary mineral …

Potential of Pyrolyzing Mixed Polyethylene Terephthalate and Polypropylene Plastic Wastes for Utilization in Asphalt Binders

M Tumpu, DSS Mabui, R Rochmawati… - Annales de Chimie …, 2023 - search.proquest.com
The recycling of plastics is a crucial element of efforts to reduce the environmental impact of
plastic waste. While thermoplastic plastics can be reshaped and recycled, thermoset plastics …

Reliability laboratory investigation of hot asphalt mixtures containing stone dust and cement as fillers: combined compressive strength and ultrasonic pulse velocity

AP Pratama, MA Caronge, MW Tjaronge - Innovative Infrastructure …, 2025 - Springer
The appropriate use of fillers is crucial for the performance of asphalt mixtures, as fillers fill
the voids between aggregates and enhance pavement compressive strength. Rock dust …

Accelerating Plastic Pollution Mitigation through Sustainable Urban Infrastructure Development

A Salim, M Tumpu, AY Yunus, AR Yusuf… - … , Technology & Applied …, 2024 - etasr.com
Plastic waste plagues both land and aquatic environments. The surface layer refers to the
road pavement layer that comes into direct contact with a vehicle's wheel surface. The …

Reducing the Environmental Impact of Asphalt Emulsion Production from Petroleum Bitumen utilizing Buton Island Natural Asphalt in Various Scenarios

M Tumpu, ND Al Makassari - Engineering, Technology & Applied …, 2024 - etasr.com
By utilizing Buton asphalt as the solid component in the creation of emulsified asphalt, a
substantial amount of petroleum bitumen, which is a finite energy resource, can be reduced …

A Potential Pozzolanic Material consisting of Rice Straw Ash and Fly Ash for Geopolymer Mortar Production-based Cementitious System

AA Amiruddin, M Tumpu, PR Rangan… - … , Technology & Applied …, 2024 - etasr.com
Rice straw waste, among other issues, is a significant source of air pollution and methane
emissions from biological decomposition. This study examines the use of Rice Straw Ash …

EXPERIMENTAL INVESTIGATION OF THE RESPONSE OF PRECAST FOAM CONCRETE UNDER MONOTONIC LOADING

M Tumpu, MW Tjaronge - GEOMATE Journal, 2025 - geomatejournal.com
Indonesia is among the nations with a comparatively high risk of earthquakes. Concrete is
one of the most commonly utilized building materials. By mixing foam liquid, also known as a …

EXTRACTION BITUMEN BUTON ROCK ASPHALT AS SOLID PHASE IN ASPHALT EMULSION MIXED: STABILITY, FLOW, AND MARSHALL QUOTIENT

M Tumpu, ND AlMakassari - GEOMATE Journal, 2025 - geomatejournal.com
This research is part of an effort to advance the use of Buton rock asphalt (EBBRA)—an
asphalt emulsion derived from extracted bitumen—as a binder. EBBRA, or extraction …