Basic rheological and mechanical properties of high-volume fly ash grouts

摘要

Soil, rock and oil-well grouting require enormous amounts of cement and are therefore good examples of areas where high volumes of fly ash could replace cement partially to produce low-cost, environmentally friendly and durable grouts. This paper presents the results of the particle size distribution, three rheological properties(flow time, bleeding and setting time), and five mechanical and strain properties(compressive strength, shear bond strength, modulus of elasticity, Poisson's ratio and drying shrinkage)of high-volume fly-ash(HVFA)grouts(cement replacement by fly ash of over 55/100 by weight), with and without superplasticizer(SP)and/or anti-washout agent(AWA).