A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Temperature-Induced Chemical Changes in Soundless Chemical Demolition Agents
This paper explored the relationship between ambient temperature, calcium oxide (CaO) hydration, and calcium carbonate () generation in cold and moderate ambient temperatures (2°C–19°C). A total of 22 samples from 2 commercial soundless chemical demolition agents (SCDAs) were tested in steel pipes. The raw powder and materials resulting from hydration were subjected to X-ray diffraction analysis, derivative thermogravimetric analysis, and thermogravimetry analysis. Raw and hydrated specimens proved chemically distinctive. Experimental results showed that (1) the unconfined portions of hydrated specimens contained more due to carbonation of , and confined portions had higher concentrations; (2) all materials tested at 19°C ambient temperature had concentrations nearly 10% greater than those tested at 2°C; and (3) the higher concentrations formed at 19°C generated 350% greater expansive pressure than did those that formed at 2°C.
Temperature-Induced Chemical Changes in Soundless Chemical Demolition Agents
This paper explored the relationship between ambient temperature, calcium oxide (CaO) hydration, and calcium carbonate () generation in cold and moderate ambient temperatures (2°C–19°C). A total of 22 samples from 2 commercial soundless chemical demolition agents (SCDAs) were tested in steel pipes. The raw powder and materials resulting from hydration were subjected to X-ray diffraction analysis, derivative thermogravimetric analysis, and thermogravimetry analysis. Raw and hydrated specimens proved chemically distinctive. Experimental results showed that (1) the unconfined portions of hydrated specimens contained more due to carbonation of , and confined portions had higher concentrations; (2) all materials tested at 19°C ambient temperature had concentrations nearly 10% greater than those tested at 2°C; and (3) the higher concentrations formed at 19°C generated 350% greater expansive pressure than did those that formed at 2°C.
Temperature-Induced Chemical Changes in Soundless Chemical Demolition Agents
Natanzi, Atteyeh S. (author) / Laefer, Debra F. (author) / Kakali, Glikeria (author) / Iman Zolanvari, S. M. (author)
2019-04-25
Article (Journal)
Electronic Resource
Unknown
Properties of Soundless Chemical Demolition Agents
| Online Contents | 1994
Properties of Soundless Chemical Demolition Agents
| British Library Online Contents | 1994
Enhancing Performance of Soundless Chemical Demolition Agents
| British Library Online Contents | 1996
Enhancing Performance of Soundless Chemical Demolition Agents
| Online Contents | 1996
Directional fracturing of rock by soundless chemical demolition agents
| Elsevier | 2024