State Key Laboratory of Silicate Building Materials, Wuhan University of Technology, Wuhan 430070, People's Republic of China.
Environ Sci Pollut Res Int. 2011 Nov;18(9):1617-22. doi: 10.1007/s11356-011-0526-0. Epub 2011 May 24.
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.
The experiments were conducted at a temperature ranging from 950°C to 1,050°C with 30% DW addition.
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.
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.
研究了在 950°C 至 1050°C 范围内，添加 30%油井钻屑（DW）的页岩砖的物理力学特性（如吸水率、显气孔率、体积密度、烧失量、烧成收缩和抗压强度）、浸出性和微观结构受烧结温度的影响。
实验在 30%DW 加入量的条件下进行。
结果表明，提高烧结温度会降低吸水率和显气孔率，增加烧结试样的收缩率、密度和抗压强度。此外，在 1050°C 下烧结的样品的物理力学性能符合 GB/T 5101-2003（中国）中 MU20 的要求。浸出液中重金属浓度远低于 GB16889-2008 的现行规定限值。
XRD 和 SEM 的结果表明，提高烧结温度会导致高温液相增加，这可能对样品的致密化过程有显著影响。
