新型土体固化剂加固海底淤泥力学特性研究

Mechanical characteristics of submarine silt stabilized by a novel agent

海底淤泥具有特殊的土性特点,其固化研究尚处于起步阶段。GS固化剂是一种以工业固废为主要原料的适用于软土加固的绿色固化材料。本文开展了GS固化剂加固海底淤泥的应用研究。以香港某工程海底淤泥为加固对象,对比分析了GS固化剂和水泥的掺量、龄期对固化土无侧限抗压强度的影响。研究结果表明,相比于普通水泥,GS固化土的早期强度更高、强度增长更快,强度提高比在2.03~2.91。同时,建立了回归模型,提出了GS固化剂加固海底淤泥的强度预测方法。研究成果有助于指导工业固废的资源化处置和建筑行业绿色发展。

Due to the special soil properties of submarine silt,studies of its stabilization are still in its infancy.GS(Gypsum-Slag)agent is a novel green agent for stabilizing soft soil,which is produced mainly based on industrial solid wastes.This paper presents an application study of GS agent for stabilizing submarine silt.The submarine silt was sampled from a certain project in Hongkong.Unconfined compressive test is conducted to investigate the influence of binder content and curing age on the stabilized soil by GS agent and ordinary cement.The results show that as compared with ordinary cement,the GS agent stabilized soil has higher early strength and faster growth rate,with a strength improvement ratio ranging from 2.03 to 2.91.The regression model is established and the strength prediction method of submarine silt stablized by GS agent is proposed.The research results are beneficial to guide the resource utilization of industrial solid waste and green development of construction industry.