Search

This article discussed the applicability of the curing agent, the growth and change of the peat soil curing unconfined compressive strength and under the different variables (such as cement, curing agent formula, construction waste, age). We get the strength increase model by analyzing the results of peat soil solidification formula experiment. Regress equation about the cement dosage, curing agent, content of construction waste residue, age and principal component values was built by using the regression analysis.

The Dian Lake Peat soil is studied as the research object in this paper, through the strengthening treatment by adding the cement and some suitable additives as well as a certain amount of waste residue, the compressive strength are taken into consideration in comparison in the different curing composition and other factors in performance of solidified soil. And it importantly discussed the applicability of curing agent and different variables (cement, the formula of curing agent, construction waste, age) in the incremental changes of unconfined compressive strength of curing peat soil.

An comparison research on the effect of pozzolanic reactions of fly ashes in architectural wastes recycle is described in the paper. In the experiment, NaOH and Na2SO4-Ca(OH)2 were used to activate the pozzolanic activities in the fly ashes—cement system to solidify the architectural wastes. The macro and micro testing methods were used to test the compressive strength, phase and electronic micro morphology of the hydration of alkali-activated fly ashes—cement cementitious system. The testing result shows that proper alkali-activated fly ashes—cement cementitious architectural wastes can shorten the incubation time of the pozzolanic reactions of fly ashes, whi ch make the reactions of fly ashes more sufficient. So the hydration products of fly ashes —cement cementitious system with alkali additions were more than those of without alkali add itions, and the compressive strength of the alkali-activated fly ashes—cement cementitious system is higher than that of non alkali-activated fly ashes—cement cementitious system.