title: Influence of sintering temperature on the characteristics of shale brick containing oil well-derived drilling waste.
abstract: BACKGROUND
  The influence of sintering temperature on the physico-mechanical characteristics (such as water absorption, apparent porosity, bulk density, weight loss on ignition, firing shrinkage, and compressive strength), leachability, and microstructure of shale brick containing oil well-derived drilling waste (DW) was investigated.
  
  
  METHODS
  The experiments were conducted at a temperature ranging from 950°C to 1,050°C with 30% DW addition.
  
  
  RESULTS
  The results indicate that increasing the sintering temperature decreases the water absorption and apparent porosity and increases the shrinkage, density, and compressive strength of sintered specimens. Moreover, the physico-mechanical properties of samples sintered at 1,050°C meet the requirements of the MU20 according to GB/T 5101-2003 (in China). The heavy metal concentrations of the leachate are much lower than the current regulatory limits according to GB16889-2008.
  
  
  CONCLUSIONS
  The results from XRD and SEM show that increasing sintering temperature results in an increase of the high temperature liquid phase, which may have a significant effect on the densification process of the samples.
authors: State Key Laboratory of Silicate Building Materials, Wuhan University of Technology, Wuhan 430070, People's Republic of China. lxggroup@163.com
authors: Xiang-Guo
authors: XG
authors: Li
authors: Yang
authors: Y
authors: Lv
authors: Bao-Guo
authors: BG
authors: Ma
authors: Shou-Wei
authors: SW
authors: Jian
authors: Hong-Bo
authors: HB
authors: Tan
references: J Hazard Mater. 2001 Oct 12;87(1-3):225-39
references: 11566412
references: J Hazard Mater. 2007 Mar 6;141(1):106-14
references: 16889889
references: J Hazard Mater. 2008 Nov 30;159(2-3):499-504
references: 18384952
references: J Air Waste Manag Assoc. 2005 Feb;55(2):163-72
references: 15796106
references: J Hazard Mater. 2006 Oct 11;137(3):1810-6
references: 16784805
references: J Air Waste Manag Assoc. 1996 Nov;46(11):1075-1080
references: 28071519
references: Waste Manag. 2006;26(9):970-8
references: 16293405