Papers by Author: Jing Feng

Abstract: Organosilicon-modified epoxy esters resin was successfully prepared by solution polymerization and the effect of content of silica sol and silane coupling agent (KH560) on the resistance to water, acid, alkali and film dry, the polymerization mechanism, structure were studied, respectively. The results showed that: compared with the properties of resistance to water, acid, alkali and film dry of pure epoxy esters resin, to some extent, those of organosilicon-modified epoxy esters resin had been improved a lot. The properties of resistance to water, acid, alkali and aging increased at first and then changed little with the increase of the content of organosilicon. Especially, the comprehensive performance of composite resin was relatively excellent when the content of silica sol and KH560 was 10%, respectively. Keywords: Organosilicon; epoxy esters resin; silane coupling agent; solution polymerization

Abstract: The four-storey reinforced concrete frame structure was analyzed by PKPM and Glodon software. This paper introduces the applied significance of HRB500 high-strength reinforced bars and the problems existed in the promotion process. It also analyzes the economic benefits of application.

Abstract: It is very important to study the pristine stress field in Civil, Mining, Petroleum engineering as well as in Geology, Geophysics, and Seismology. There are various methods of determination of in-situ stress in rock mass. However, hydraulic fracturing techniques is the most convenient method to determine and interpret the test results. Based on an hydraulic fracturing stress measurement campaign at an underground liquefied petroleum gas storage project which locates in ZhuHai, China, this paper briefly describes the various uses of stress measurement, details of hydraulic fracturing test system, test procedure adopted and the concept of hydraulic fracturing in arriving at the in-situ stresses of the rock mass.