Journal
JOURNAL OF MATERIALS IN CIVIL ENGINEERING
Volume 27, Issue 1, Pages -Publisher
ASCE-AMER SOC CIVIL ENGINEERS
DOI: 10.1061/(ASCE)MT.1943-5533.0001044
Keywords
Magnesium phosphate cement; Foam concrete; Fly ash; Thermal conductivity; Compressive strength
Categories
Funding
- National Key Technology R&D Program of the Ministry of Science and Technology [2011BAE27B04-7]
- Program for New Century Excellent Talents in University [NCET-12-0605]
- Program for Scientific Research and Development by China Railway Corporation [2013G008-F]
- National Natural Science Foundation of China [51378309]
Ask authors/readers for more resources
Most previous investigations on foam concrete have been confined to portland cement and the density range of 400-1,600 kg/m(3). The present study aims to develop a new foam concrete with a density ranging from 250 to 400 kg/m(3) by replacing portland cement with magnesia phosphate cement (MPC). Extensive laboratory tests were performed to characterize the fresh properties, strength, water resistance, and thermal conductivity of the MPC foam concrete. In the experimental studies, mixtures were prepared by replacing fine sand with various contents of fly ash. The results show that an appropriate workability value is achieved at a water-solid ratio of 0.30, at which a foam concrete mixture with a good stability and consistency can be produced. Using fly ash to replace fine sand can improve the properties of MPC foam concrete, includings its compressive strength, water resistance, and thermal conductivity. Novel super-lightweight foam concretes with dry densities ranging from 210 to 380 kg/m(3) were produced, with strengths ranging from 1.0 to 2.8 MPa and thermal conductivities ranging from 0.049 to 0.070 W/m . K. (C) 2014 American Society of Civil Engineers.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available