Research on the Properties of Wet-Ground Waste Limestone Powder as Foam Stabilizer in Foamed Concrete

2021 ◽  
Author(s):  
Hongbo Tan ◽  
Li Guangyan ◽  
Xingyang He ◽  
Zhang Junjie ◽  
Deng Xiufeng ◽  
...  
Keyword(s):  
Limestone Powder ◽  
Foam Stabilizer ◽  
Foamed Concrete ◽  
Wet Ground

The influence of wet ground fly ash on the performance of foamed concrete

2021 ◽  
Vol 304 ◽  
pp. 124676
Author(s):  
Guangyan Li ◽  
Hongbo Tan ◽  
Xingyang He ◽  
Junjie Zhang ◽  
Xiufeng Deng ◽  
...  
Keyword(s):  
Fly Ash ◽  
Foamed Concrete ◽  
Wet Ground

Properties of foamed concrete with Ca(OH)2 as foam stabilizer

2021 ◽  
Vol 118 ◽  
pp. 103985
Author(s):  
Xiong Yuanliang ◽  
Li Baoliang ◽  
Chen Chun ◽  
Zhang Yamei
Keyword(s):  
Foam Stabilizer ◽  
Foamed Concrete

Influence of Limestone Powder on the Optimum Gypsum Content for Portland Cement with Different Alumina Content

2007 ◽  
Vol 18 (2) ◽  
pp. 103-113 ◽  
Author(s):  
Hiroki Yamashita ◽  
Kazuo Yamada ◽  
Hiroshi Hirao ◽  
Seiichi Hoshino
Keyword(s):  
Portland Cement ◽  
Limestone Powder ◽  
Alumina Content ◽  
Gypsum Content

scholarly journals Description of the concrete carbonation process with adjusted depth-resolved thermogravimetric analysis

2021 ◽  
Author(s):  
Nico Vogler ◽  
Philipp Drabetzki ◽  
Mathias Lindemann ◽  
Hans-Carsten Kühne
Keyword(s):  
Calcium Hydroxide ◽  
Bound Water ◽  
Reference Method ◽  
Microscopic Analysis ◽  
Limestone Powder ◽  
Gravimetric Analysis ◽  
Sample Material ◽  
Accelerated Carbonation ◽  
Temperature Range ◽  
Carbonation Process

AbstractThe thermal gravimetric analysis (TG) is a common method for the examination of the carbonation progress of cement-based materials. Unfortunately, the thermal properties of some components complicate the evaluation of TG results. Various hydrate phases, such as ettringite (AFt), C–S–H and AFm, decompose almost simultaneously in the temperature range up to 200 °C. Additionally, physically bound water is released in the same temperature range. In the temperature range between 450 °C and 600 °C, the decomposition of calcium hydroxide and amorphous or weakly bound carbonates takes place simultaneously. Carbonates, like calcite, from limestone powder or other additives may be already contained in the noncarbonated sample material. For this research, an attempt was made to minimise the influence of these effects. Therefore, differential curves from DTG results of noncarbonated areas and areas with various states of carbonation of the same sample material were calculated and evaluated. Concretes based on three different types of cement were produced and stored under accelerated carbonation conditions (1% CO2 in air). The required sample material was obtained by cutting slices from various depths of previously CO2-treated specimen and subsequent grinding. During the sample preparation, a special attention was paid that no additional carbonation processes took place. As reference method for the determination of the carbonation depth, the sprayed application of phenolphthalein solution was carried out. Microscopic analysis was examined to confirm the assumptions made previously. Furthermore, the observed effect of encapsulation of calcium hydroxide by carbonates caused by the accelerated carbonation conditions was examined more closely.

scholarly journals Effect of limestone powder on mechanical properties and microstructure of phosphogypsum

2021 ◽  
Vol 1777 (1) ◽  
pp. 012012
Author(s):  
P F Ma ◽  
S Li ◽  
B J Cheng ◽  
B Y Yu ◽  
Y X Gao
Keyword(s):  
Mechanical Properties ◽  
Limestone Powder
Sign in / Sign up

Export Citation Format

Share Document