Results 21 to 30 of about 2,625 (181)
Journal of Applied Science & Process Engineering, 2015 This study investigates the potential of using silica based industrial waste specifically waste calcined clay (WCC) from ceramic industry as partial cement replacement.
Faatima Zahra Ahmat Asim +1 more
doaj +1 more source
Mechanochemical treatment of Serbian kaolin clay to obtain high reactive pozzolana [PDF]
Journal of the Serbian Chemical Society, 2013 Mechanochemical treatment of Serbian kaolin clay was carried out in a planetary ball mill using two different milling media, hardened steel or zirconia vials and balls. The samples obtained with various milling times were characterized by the particle
Mitrović Aleksandra, Zdujić Miodrag
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Studies about the heat of hydration developed in mortars with natural and by-product materials
Materiales de Construccion, 2000 The heat of hydration developed in reactions of mortars and concretes can be sensibly reduced using pozzolanic materials. However, the decrease of the heat of hydration is not directly proportional to the amount of cement substituted, because of the heat
M. I. Sánchez de Rojas +2 more
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BioResources, 2015 The construction industry is one of the largest and most active growth sectors worldwide. It presents an important environmental impact, and one way to reduce the impact of the construction activity is to substitute pozzolanic materials for ordinary ...
Carlos Cobreros +7 more
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Pozzolanic activity of flint powder
Sustainable Construction Materials and Technologies (SCMT), 2019 It was tested whether powdered flint is able to reach pozzolanic properties comparable to fly ash. The flint aggregates were crushed and milled to three different grain size fractions comparable to coal fly ash. The powdered flint was characterized and subsequently used as a substitute in mortar prisms.
Osterhus, Lennart +2 more
openaire +1 more source
Tratamentos térmico e químico para remoção de óxidos alcalinos de cinzas de capim elefante
Química Nova, 2014 Elephant grass ash (EGA) was produced at 700 °C, with two different treatments: hot water (EGAhw) or acid solution (EGAas). The efficiency of the treatments at removing the potassium oxide was evaluated with the aim of using the EGA as a pozzolanic ...
Erika Y. Nakanishi +5 more
doaj +1 more source
Heliyon, 2019 This paper presents the findings of an experimental investigation on optimizing pozzolanic activity of a blend of Rice Husks (RH), Spent Bleaching Earth (SBE) and Broken Bricks (BB) to form pozzolana that would have pozzolanic activity comparable to ...
Protus Nalobile +3 more
doaj +1 more source
Investigation of the Pozzolanic Activity of Microwave Heat-Treated Kaolin
Ömer Halisdemir Üniversitesi Mühendislik Bilimleri Dergisi, 2022 Kilin puzolanik aktivitesinin arttırılması amacıyla farklı yöntemler kullanılmaktadır. Kül fırını ve döner fırınlarda yapılan kalsinasyon hem kayda değer miktarda enerji harcamakta hem de uzun süre almaktadır. Mikrodalga teknolojisi, killerin kalsinasyonu için alternatif olma potansiyeli taşımaktadır. Bu çalışmada kısa süreli mikrodalga ısıl işleminin,
GÜLTEKİN, Adil, RAMYAR, Kambiz
openaire +2 more sources
Foamed Concrete Sealing Materials for Coal Seam Gas Drainage Boreholes: A Review
Safety Science and Technology, EarlyView.This study investigates the sealing performance of foamed concrete in gas drainage boreholes. By comparing leakage pathways (a, c) with sealed systems (b, d), the research demonstrates how foamed concrete effectively fills mining‐induced fractures and resists deformation.
Jiaxing Zou +6 more
wiley +1 more source
Structural Concrete, EarlyView.Abstract Steam curing is commonly used to manufacture precast culverts to accelerate early strength development. This study investigates the effect of supplementary cementitious materials (SCMs) on the permeability properties of steam‐cured precast concrete culverts.
Saugat Humagain +3 more
wiley +1 more source