Comparison of peak acceleration in soil layers

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Surface morphology, microstructure and gradation curve of CSS

2024, 46(9): 1860-1869.

Experimental study on strength and water stability of concentrated solution sludge solidified with alkali-activated GGBS geopolymer .

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Tables of the Article

土工含水率/% 颗粒相对密度 pH值天然密度/(g·cm⁻³) 塑限/% 液限/% 有机质含量/%

26.76 2.31 9.31 1.88 9.62 19.18 5.87

Basic physical properties of CSS
成分 Na₂O Cl K₂O SO₃ MgO CaO SiO₂ Fe₂O₃ P₂O₅ Al₂O₃

含量 35.08 28.14 17.05 14.14 2.44 2.07 0.40 0.13 0.07 0.48

Elemental compositions of CSS (单位: %)
重金属 Ag Ba Be Cd Cr Cu Ni Pb Zn

含量 — 18 — — 4 — 18 — —

Heavy metal content of CSS (单位: mg/kg)

种类	CaO	SiO₂	SO₃	Al₂O₃	Fe₂O₃	MgO	P₂O₅	Na₂O	K₂O	Cl	其他
矿粉	37.55	36.49	2.38	18.00	0.28	9.74	－	0.54	0.42	－	1.23
硫铝酸盐水泥	47.07	10.07	11.54	24.37	2.70	1.13	0.09	0.49	0.99	0.25	1.30

Elemental compositions of cement and GGBS (单位: %)

试验类型	试验组别	水泥掺量/%	矿粉掺量/%	龄期/d	浸泡时间/d	试样数量
无侧限抗压强度试验	C-CSS	10，20，30，40	0	7，14，28	—	36
无侧限抗压强度试验	A-CSS	0	10，20，30，40	3，7，14，28	—	48
水稳定性试验	C-CSS^WI	10，20，30，40	0	28	3，7，14，28	48
水稳定性试验	A-CSS^WI	0	10，20，30，40	28	3，7，14，28	48

固化剂	水化产物类型	水化产物结构形态	水化产物生成时间
硫铝酸盐水泥	C—S—H、钙矾石	二维链状	较慢，稳定
碱激发矿粉	矿粉基地聚物、钙矾石	三维网状	快速，强烈

Characteristics of hydration products of alkali-activated GGBS and sulfoaluminate cement

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