Effect of Different Silicic Acid Ester on the Properties of Sandstones with Varying Binders
Effect of Different Silicic Acid Ester on the Properties of Sandstones with Varying Binders
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不同硅酸酯对不同粘结剂砂岩性能的影响
DOI：
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发表时间：
2018
期刊：
影响因子：
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通讯作者：
J. Orlowsky
中科院分区：
文献类型：
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作者：
F. Braun;J. Orlowsky
摘要本文研究了不同种类的油酸乙酯（SAE）对不同类型砂岩的处理效果，并评价了它们对处理后砂岩性质的影响。用三种不同的以油酸乙酯为基础的固化剂（KSE 100、KSE 300、KSE 510）对尺寸为50 mm×50 mm×100 mm的Baumberger砂岩（BST）、Sander砂岩（SST）和Nievelsteiner砂岩（NST）的棱柱体试样进行了三种不同的处理（真空、一次和五次浸渍）。 本研究的目的是证明应用的差异，例如不同的石材固结剂，其他处理程序以及使用不同粘合剂（BST：钙质，SST：粘土，NST：石英）的砂岩样品，在每种情况下，导致不同的结果有关的加固效果和成功的固结行动。实验室测量进行处理和未处理的材料，以估计结石固结行动的有效性。为了检测后续处理程序的影响，进行了水蒸气扩散阻力（WVDR）和毛细管吸水率（CWA）测量。此外，通过测量超声波速度、抗压强度、抗弯强度、拔出粘结强度和石材样品的孔隙率来分析石材固结的有效性。由于不同的处理程序，所研究的砂岩显示出不同的岩石物理和机械性质（没有强化效果，直到“过度处理”）。不同的处理程序导致增加量的增强剂在孔隙中的研究石头，并作为结果，以更高的值在WVDR（除BST和NST样品），超声速度和机械强度的改善（除抗压强度的NST）。这特别适用于1次、5次和真空浸渍的SST和5次处理的NST和BST，而不管所使用的石材增强剂。另一方面，这些不同的处理程序通常导致CWA降低和总孔隙率降低。所进行的测量表明，在5次真空处理的情况下，强度有所提高，但密封孔隙的可能性也有所增加，尤其是对于SST样品。
Abstract This study deals with the effect of using different silicic acid ethyl esters (SAE) on diverse sandstones and to estimate their influence on the properties of the treated stones. Prismatic samples of Baumberger Sandstone (BST), Sander Sandstone (SST) and Nievelsteiner Sandstone (NST) with the dimensions 50 mm×50 mm×100 mm were treated with three different consolidating agents based on silicic acid ethyl ester (KSE 100, KSE 300, KSE 510) in three different procedures (vacuum, 1- and 5- time impregnation). The aim of this study is to demonstrate that differences in application, for instance varying stone consolidation agents, other treatment procedures as well as using sandstone samples with different binders (BST: calcareous, SST: clayey, NST: quartzitic), cause in each case different results concerning the strengthening effect and the success of a consolidation action. Laboratory measurements were performed on treated and untreated material in order to estimate the effectiveness of stone consolidation actions. To detect the influence of subsequent treatment procedures, water vapour diffusion resistance (WVDR) and capillary water absorption (CWA) measurements were carried out. Furthermore, the effectiveness of a stone consolidation was analysed by measuring ultrasound velocity, compressive strength, flexural strength, bond strength by pull-off and the porosity of the stone samples. Due to varying treatment procedures the investigated sandstones showed different petrophysical and mechanical properties (no strengthening effect up to “over-treating”). Different treatment procedures lead to increasing amounts of strengthening agent in the pore space of the investigated stones and as a result to higher values in WVDR (except BST and NST samples), ultrasound velocity and to an improvement in mechanical strength (except compressive strength of NST). This applies in particular to 1-time, 5-time and vacuum impregnated SST and 5-time treated NST and BST, regardless of the used stone strengthener. On the other hand, these different treatment procedures lead often to a decreased CWA and to a reduction in total porosity. The performed measurements indicate a development in strength in case of 5-time and vacuum treatment, but also an increase of the possibility of sealing the pores, especially for SST samples.