Design and Durability Analysis of Industrial Waste Improved Cement Soil Compound Ratio
Fly ash and desulfurization gypsum Improved cement soil were selected,and the durability of cement soil,fly ash Improved cement soil and desulfurization gypsum Improved cement soil was evaluated by designing the proportion of cement soil,fly ash Improved cement soil and desulfurization gypsum Improved cement soil through indoor unconfined compressive strength test.The results show that the compressive strength of φ50 × h50 mm and the ratio of the strength ofφ50 × h 100 mm tend to stabilize gradually with the increase of age,and it is recommended that the maximum cement admixture is 12.0％.Under the same cement admixture or fly ash admixture,the change curve of unconfined compressive strength of fly ash cement soil is similar in shape,and the compressive strength of cement soil with 12.0％fly ash admixture reaches the peak when the cement admixture is 8.0％and 12.0％;under the same age of regeneration,the effect of FGD gypsum dosage in improving the compressive strength of cement soil is relatively poor,and the unconfined compressive strength of FGD gypsum cement soil grows linearly with the increase of cement dosage,which is the same as cement dosage,but with the increase of cement dosage.The FGD gypsum dosage has a linear growth with the increase of cement dosage,and then decreases with the increase of FGD gypsum dosage,and the maximum value is obtained when the cement dosage is ≥12.0％and the FGD gypsum dosage is 6.0％,and it is suggested that the maximum dosage of FGD gypsum is 4.0％;the frost resistance of fly ash hydromud is the best performance,and the lateral limit-free compressive strength and the residual mass ratio of Improved cement soil decrease linearly with the increase of the number of freezing and thawing.
万方数据
维普
