Chemical and thermal activation of perlite-containing cementitious mixtures

Date

2010-12-01

Author

Saǧlik, Asli Ünsal
Erdoğan, Sinan Turhan

Metadata

Show full item record

Item Usage Stats

202
views

0
downloads

Perlite is a volcanic mineral abundant in Turkey, China, Japan, the US and several EU countries. Expanded perlite has been widely used in producing lightweight concrete. Recent research suggests the use of ground perlite as a pozzolan to partially replace cement. This study investigates strength properties of high-volume perlite mixtures and the influence of chemical and thermal activation on their strengths at early and later ages. Both activation types can increase early-strength gain rates and strength values achieved by pure portland cement mixtures can be exceeded in as early as 28 days with some activators and be maintained. Findings indicate that ground perlite is a successful natural pozzolan. Results also suggest that perlite-only mixtures can be activated to produce geopolymers. The consistency of its chemical composition compared to those of artificial pozzolans and its abundance in several developing countries makes perlite attractive for producing sustainable concretes with reduced carbon footprints.

Subject Keywords

Artificial pozzolan, Chemical compositions, EU countries, Expanded perlite, Natural pozzolan, Perlite mixtures, Sustainable concretes

URI

https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84861394738&origin=inward
https://hdl.handle.net/11511/83467

Conference Name

2nd International Conference on Sustainable Construction Materials and Technologies (28 - 30 Haziran 2010)

Collections

Department of Civil Engineering, Conference / Seminar

Suggestions

OpenMETU
Core

Use of perlite as a pozzolanic addition in producing blended cements Erdem, Tahir Kemal; Akgül, Çağla; Tokyay, Mustafa; Erdogan, Turhan Y (2007-01-01) There are similar to 6700 million tons of perlite reserves in the world and two thirds of this amount takes place in Turkey. Although perlite possesses pozzolanic properties, it has not been so far used in producing blended cements. This study focuses on the use of natural perlites in blended cement production. For this purpose, after examining the suitability of the perlites as pozzolans and their case of grindability, 16 types of blended cements having 320 m(2)/kg or 370 m(2)/kg Blaine fineness were produ...
Briquetting of ulexite fines Ozbayoglu, G; Ozdemir, Z (2004-08-25) Turkey is the main boron minerals producing country in the world. The most important boron minerals are tincal, colemanite and ulexite. All mining, beneficiation and handling operations generate fines which cause ecological and economical problems. Utilization of this accumulated material requires both upgrading and agglomeration. The aim of this research was to exploit the ulexite fines by improving their grade and size. Attrition-scrubbing followed by washing and screening was employed for upgrading the f...
Mechanical Properties of Cement Mortar Containing Heat-Treated Boron Derivative Waste at Elevated Temperatures KAMAN, DERYA ÖVER; Koroglu, Levent; AYAS, ERHAN; Tokyay, Mustafa; GÜNEY, Yücel (2018-06-01) The largest boron reserves in the world are located in Turkey. The production of boron compounds and use of generated boron derivative waste during this production are extremely important for both economically and environmentally. This study evaluates boron derivative waste and investigates doping effects of heat-treated boron derivative wastes on mineralogical, microstructural, and mechanical properties of cement mortar. The waste, portland cement, and wastes heat-treated at temperatures of 400-900 degrees...
Early-age activation of cement pastes and mortars containing ground perlite as a pozzolan Erdoğan, Sinan Turhan (Elsevier BV, 2013-04-01) Perlite is a natural pozzolan abundant in several countries which are major producers of cement. This makes perlite attractive for producing sustainable concretes. Strength development and heat evolution of perlite-containing mixtures, and the influence of chemical and thermal activation on their early and later age properties were investigated using five activator chemicals and four curing temperature-duration combinations. Chemical activation could increase the 1-day, or 3-day compressive strengths of 25%...
Effect of ground perlite incorporation on the performance of blended cements Erdem, T. K.; Akgül, Çağla; Tokyay, Mustafa; Erdoğan, Turhan Y. (2007-06-13) Perlite is a volcanic rock that contains relatively high amounts of SiO2 and Al2O3. Due to its proper chemical composition and glassy structure, it can be used as a pozzolanic addition in blended cements. In this study, ground perlite was used as a cement replacement material in blended cements. Several mortar mixes were prepared to investigate the performance of those cements. The results showed that perlite incorporation caused early age strength losses when compared to the control mortars containing only...

Citation Formats

A. Ü. Saǧlik and S. T. Erdoğan, “Chemical and thermal activation of perlite-containing cementitious mixtures,” 2010, p. 1517, Accessed: 00, 2021. [Online]. Available: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84861394738&origin=inward.