A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Electrical properties, physico-chemical and mechanical characteristics of fly-ash-limestone-filled pozzolanic cement
In this fly ash was replaced partially up to fully by limestone dust. The change in the electrical conductivity was reported during setting and hardening after gauging with water. The phase composition was studied by XRD and DTA. Degree of hydration, sol/gel ratio, reaction ratio, porosity and mechanical properties as well as free lime content was studied. The results show that the substitution of fly ash by 5 to 10 wt-% limestone in SRC pastes decreases the conductivity. Increase of limestone content (15 and 20 wt-%), the electrical conductivity increases than samples free from limestone (S.0). 5 wt-% limestone extended the final setting times. On the other side, the increase of limestone content, the final setting times are shortened, this is due to the filling effect of the limestone. The combined water, degree of hydration and the gel/space ratio increase with limestone content. It was shown that the free lime of S.0, S.5 as well as M.0, M.5 increase up to 7 days, and than decreases up to 90 days. On the other hand, the compressive strength and total porosity decreases with limestone content.
Electrical properties, physico-chemical and mechanical characteristics of fly-ash-limestone-filled pozzolanic cement
In this fly ash was replaced partially up to fully by limestone dust. The change in the electrical conductivity was reported during setting and hardening after gauging with water. The phase composition was studied by XRD and DTA. Degree of hydration, sol/gel ratio, reaction ratio, porosity and mechanical properties as well as free lime content was studied. The results show that the substitution of fly ash by 5 to 10 wt-% limestone in SRC pastes decreases the conductivity. Increase of limestone content (15 and 20 wt-%), the electrical conductivity increases than samples free from limestone (S.0). 5 wt-% limestone extended the final setting times. On the other side, the increase of limestone content, the final setting times are shortened, this is due to the filling effect of the limestone. The combined water, degree of hydration and the gel/space ratio increase with limestone content. It was shown that the free lime of S.0, S.5 as well as M.0, M.5 increase up to 7 days, and than decreases up to 90 days. On the other hand, the compressive strength and total porosity decreases with limestone content.
Electrical properties, physico-chemical and mechanical characteristics of fly-ash-limestone-filled pozzolanic cement
Elektrische Eigenschaften, physico-chemische und mechanische Eigenschaften von Puzzolan-Zement mit dem Zuschlagstoff Flugasche-Kalkstein
Heikal, M. (author) / Helmy, I. (author) / El-Didamony, H. (author) / El-Raoof, F.A. (author)
Ceramics Silikaty, Prag ; 48 ; 49-58
2004
10 Seiten, 10 Bilder, 4 Tabellen, 36 Quellen
Article (Journal)
Czech
| British Library Online Contents | 2004
Limestone-filled pozzolanic cement
| Online Contents | 2000
Limestone-filled pozzolanic cement
| British Library Online Contents | 2000
Limestone-filled pozzolanic cement
| Tema Archive | 2000