The frother for the plasticity lightweight injection material and production manner and that restoration construction method null hydrocarbon type surface active agent of the plasticity lightweight

摘要

PPROBLEM TO BE SOLVED: To provide a foaming agent for a plasticized lightweight grouting material, having a light weight and excellent durability, capable of being gelatinized in an instant, hardly affected by underground water or flowing water, and facilitating limited injection and placing of concrete in water; and to provide the plasticized lightweight grouting material using the foaming agent, a production method thereof, and a grouting method thereof. PSOLUTION: The foaming agent for the plasticized lightweight grouting material is obtained by using a hydrocarbon-based surfactant and/or a protein-based surfactant as a main component, and formulating a clayey mineral therewith. The plasticized lightweight grouting material is obtained by mixing foam foamed by the foaming agent with a hardenable liquid containing cement and water for kneading. The proportion of the mixed foam is 15-85% based on the volume of the plasticized lightweight grouting material, and preferably, the flow value and the density of the grouting material are 80-150 mm and 0.3-1.2 g/cmSP3/SPrespectively. The hardenenable liquid and the foam are separately prepared, and the mixing and stirring of both are carried out at the injection site so that the instantly gelatinized injecting material is charged to the injection site, and hardened. PCOPYRIGHT: (C)2004,JPO