Author:
Smorodinova T N,Kotvanova M K,Sologubova I A,Pavlova S S
Abstract
Abstract
This study aims to obtain cement with valuable properties by introducing additives enhancing concrete strength. Zeolite tuff of the Lyulinskoe deposit (Russia) that had not been studied before was tested as a strength improver. The elemental and phase zeolite tuff compositions were established by X-ray fluorescence and X-ray phase analysis. Electrical conductivity and cement paste pH were measured, and the pozzolanic activity of zeolite additive was evaluated. The Portland cement hydration in the presence of zeolite leads binds not only calcium ions, but also sulfate ions. The obtained kinetic curves of electrical conductivity and pH level gave stage wise description of Portland cement hydration and strength development, which reveals the possibility of managing the curing process. It was established that 5% zeolite ground to 5–10 μm increases the compressive strength by 15% in 7 days and by 21% in 28 days.
Cited by
2 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献