MMA化学灌浆材料的研究及其在土木工程中的应用

本文叙述了细微裂隙固结和补强灌浆材料的设计,MMA化学灌浆材料的特点,及其应用效果。MMA化学灌浆材料具有粘度比水低,能在-19～-23℃硬化,硬化后不收缩,强度高,粘结能力强,耐老化,浆液毒性低,硬化后不污染环境,施灌工艺简单等优点。用于基岩固结灌浆,能使弱风化岩体的参数提高到微风化或新鲜岩体的水平;用于混凝土裂缝补强灌浆,能恢复混凝土的整体性。

A Study of MMA Chemical Grouting Material and Its Application in Civil Engineering

This paper describes the design of consolidation and strengthening qrouting material in microfissures, and also characters of MMA chemical qrouting material and its effect in application. MMA Chemical grouting material possesses the following advantages: The lower viscosity than that of water; hardening in -19^-23℃; non-contraction after hardening; the high strength and adhesion; the durability; the low toxicity and the non-pollution of the environment after its hardening. If we use MMA for bedrock consolidation grouting, the parameters of weakly weathered rock can be lifted to the level of slightly weathered or fresh rock. If we use MMA for strengthening grouting of fissured concrete, the integrity of concrete can be recovered.