This paper describes the research run on ceramic materials, and more specifically fired clay roof tiles, ground to a fineness suitable for use as an active replacement portland cements (PCs). The utilization of waste products from calcined tiles pozzolanic material in cement manufacture is studied. One first materials used pozzolans history was thermal‐treated clay, similar precast elements. For this study, selected are that have been eliminated different reasons: wrong temperature inside...

Abstract Copper slag is a by‐product generated during smelting to extract copper metal from the ore. The obtained may exhibit pozzolanic activity and therefore be used in manufacture of addition‐containing cements. In this paper effect incorporation cement measured. Blends with Portland generally possess properties equivalent containing fly ash, but very different silica fume incorporation. ash reduce heat hydration more effectively than mortars. replacement 30% by reduces flexural...

Durability is one of the focal points recent research on behavior new blended cement matrices in aggressive environments. The material selected for this study was ceramic waste ( CW ) rejected by Spanish manufacturers, primarily reasons such as unsuitable kiln temperature or dimensional mechanical failure. resistance CW‐containing pastes to three environments SO 4 2− , Cl − and substitute seawater) tested using Koch–Steinegger method in‐depth analysis effect chemical matrices. samples were...

Industrial waste fired clay materials, which are good pozzolans, can be used in place of cement the manufacture precast concrete products. This paper analyzes use industrial as pozzolanic materials for roofing tiles, exploring microstructure and morphology resulting their impact on product properties performance. All trials measurements were taken an ceramic subsequently a second process to found meet market standards. Porosity was observed greater only one trial, while proportion pores with...

Abstract The beneficial effects of pozzolans on cement manufacture have encouraged their use in that industry. Traditional natural pozzolan become less available late, however, due to a decline quarrying intensity aimed at minimizing the impact landscape. At same time, environmental policies pursue reduction or elimination spoil heaps by valorizing industrial waste and by‐products as raw materials, keeping with principles circular economy. quest for new types pozzolanic properties has...

To recycle and reutilise waste materials find definite applications for their use, it is necessary to have a deep knowledge of them. The aim this study the possibility using from calcined clay, actually ceramic tile, once crushed grounded, as pozzolanic material. For purpose, different tests are carried out in order establish activity At same time, these results compared those other industrial by-products, fly ash silica fume, which usually employed elaborate mortars concretes.

Abstract The decay in mortar and concrete induced by extremely aggressive agents is normally the result of agent‐binder reaction. Cement composition characteristics therefore determine durability mortars concretes which they form part. existing legislation envisages use different types additions cement, have a direct effect on elements buildings civil works. This study addressed inclusion ceramic industry milling glazing sludge as an active addition cement. reuse this industrial waste...

First Name is required invalid characters Last Email Address Invalid

Se ha realizado un catálogo floristico de la Sierra Aracena (Huelva, España), en el que se citan 900 táxones plantas vasculares.

The recycled and re-valuation process of waste materials involves studies lead to a deep acknowledges them, finding applications for their intended use. from ceramic products can be into the construction sector, as arid or pozzolanic materials. current work deals with incorporation in these two different ways, checking behaviour elaborated mortar by mean laboratory tests. Also, tests are developed factory, using components precast concrete tiles.

First Name is required invalid characters Last Email Address Invalid

Abstract BACKGROUND: This paper discusses the formation of thaumasite in mortar sub‐flooring used as a base material for laying tiles, and influence this mineral relation to deterioration building materials. An investigation constructed with dolomitic limestone sand high sulfate content settle ceramic pavement was carried out. RESULTS: The underwent an important process due expansive compounds environmental conditions temperature humidity installation area Murcia (Spain). Expansion appeared...

The heat of hydration developed in reactions mortars and concretes can be sensibly reduced using pozzolanic materials. However, the decrease is not directly proportional to amount cement substituted, because released reaction. With materials high activity as silica fume or opaline rocks very, even increased.

First Name is required invalid characters Last Email Address Invalid

En esta investigación se estudiaron las interacciones de Pb2+, Cd2+, Zn2+ y Cr3+ en el proceso biosorción por levadura pan; para conocer la afinidad los metales hacia biomasa. Se determinaron isotermas adsorción sistemas sencillos múltiples, ambas pruebas llevaron a cabo pH 5, 30 ºC 150 rpm 6 horas. La biomasa analizó antes después del FT-IR, determinar grupos funcionales que participan proceso. orden capacidad máxima fue siguiente: (82.17)> Pb2+ (51.85)> (33.96)> Cd2+ (30.06) mg/g....

First Name is required invalid characters Last Email Address Invalid