This work studies the feasibility to employ a combination of volcanic ash (natural waste) with
different raw materials in the production of geopolymers: fly ash and mining tailing …

This study focuses on the geopolymer synthesized from Mount Sinabung's volcanic ash. The
compressive strength of the geopolymer was determined by optimizing five factors using the …

A systematic study on the dissolution in concentrated alkali of two volcanic ashes from
Cameroon, denoted as DAR and VN, is presented here. One volcanic ash, DAR, was 2 wt …

Purpose: The purpose of this study is to analyze the mechanical and physical properties of
refractory bricks manufactured by geopolymerization from volcanic ash to obtain a product …

Plastic waste and its inadequate final disposal are a serious problem of environmental
pollution, which has increased considerably in this time of pandemic due to the use of …

This work studies the mechanical properties of volcanic ash based geopolymer mortars. The
geopolymer mortars were made with volcanic ashes from Ubinas volcano using mixtures of …

The use of sand for metal molds is often found in various places; this research will focus on
the type of sand used, namely sand from Lumajang Regency, which is known to be strong …

In this study, volcanic ash from Ubinas and Sabancaya volcanoes in Peru were
characterized by particle size, scanning electron microscopy coupled with energy dispersive …

La investigación" Incidencia de los Factores Económicos y Geográficos Distritales en el
Acceso al Agua Potable, Perú 2017" aborda la problemática general de comprender las …

❖ NBR7480 CA 50S: Barra de construcción soldable❖ Auditoría:“Procedimiento sistemático,
independiente y documentado para evaluar un SGSST, que se llevará a cabo de acuerdo a …