Results 31 to 40 of about 12,946 (261)
Sulfate Resistance of Alkali Activated Pozzolans [PDF]
International Journal of Concrete Structures and Materials, 2014 The consequence of sulfate attack on geopolymer concrete, made from an alkali activated natural pozzolan (AANP) has been studied in this paper. Changes in the compressive strength, expansion and capillary water absorption of specimens have been investigated combined with phases determination by means of X-ray diffraction.
Bondar, Dali +3 more
openaire +3 more sources
Effect of Locust Bean Pod Ash and Eggshell Ash on the Mortar Compressive and Flexural Strengths of Cement Blends [PDF]
, 2020 An increase in the generation of biogenic wastes such as locust bean pods and eggshells coupled with the need to drive sustainability in the cement industry has led the use of these wastes as cement replacement materials.
Jibril, Abubakar +2 more
core +2 more sources
A Study on Ordinary Portland Cement Blended with Rice Husk Ash and Metakaolin [PDF]
, 2020 . This paper tries to investigate the effect of replacing Ordinary Portland cement (OPC) with Metakaolin (MK) and Rice husk ash (RHA) on the physicomechanical properties such as consistency, setting times, soundness and mortar compressive strength of ...
Ayeni, Sholaremi +4 more
core +2 more sources
Sterile Clay Pozzolans from Phosphate Mining [PDF]
Materials Research, 2015 The work presents the characterization of clays from sterile mining of the concentrated phosphatic materials of Araxá in Minas Gerais as pozzolanic materials. Three clays of distinct tones, namely, yellow (YC), red (RC), and intermediate (IC) clays, were
José Afonso de Matos Neto +5 more
doaj +1 more source
Analytical characterization of ancient mortars from the archaeological roman site of Pisões (Beja, Portugal) [PDF]
, 2019 The analytical characterization of mortar samples from the roman archaeological site of Pisões, located in Southern Portugal, were carried out by means of X-ray diffractometry (XRD), thermogravimetry (TGADTA), optical and electron scanning microscopy ...
Borsoi, G. +4 more
core +1 more source
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
Cements based on kaolinite waste [PDF]
, 2018 The cement industry involves high-energy consumption that generates high CO2 emissions into the atmosphere. Environmental concerns can be addressed by replacing parts of Portland cement clinkers with pozzolanic materials in mortars and concrete.
Fernández Carrasco, Lucía +5 more
core +8 more sources
Reactivity of modified iron silicate slag as sustainable alternative binder [PDF]
, 2019 A possible solution to decrease the CO2 footprint caused by cement industry and to enhance the transition to circular economy is to use slags as Supplementary Cementitious Materials (SCM).
De Belie, Nele +3 more
core +2 more sources
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
doaj +1 more source
Zeolita, estudio de aptitud como una puzolana natural aplicada a hormigón estructural [PDF]
, 2015 Nowadays, concrete is one of the most widely used construction materials due to its low price, appropriate mechanic characteristics and durability. Also, due to its ease to adopt diverse forms and sizes (Najimi et al., 2012).
Locati, Francisco +4 more
core +2 more sources