Nano modified cement mixing pile additive suitable for ocean rock-soil environment and preparation method of additive

• Main Authors: QIANG YEJIA, XU CHUNTAI, MENG TAO, HU ANFENG, LI YUANYUAN, LIN LEI
• Format: Patent
• Language: English
• Published: 19.08.2015
• Subjects: ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; EMBANKMENTS; EXCAVATIONS; FIXED CONSTRUCTIONS; FOUNDATIONS; HYDRAULIC ENGINEERING; LIME, MAGNESIA; METALLURGY; REFRACTORIES; SLAG; SOIL SHIFTING; TREATMENT OF NATURAL STONE; UNDERGROUND OR UNDERWATER STRUCTURES

The invention provides a nano modified cement mixing pile additive suitable for an ocean rock-soil environment. The nano modified cement mixing pile additive is prepared from suchcomponents in percentage by mass as 25%-35% of nano SiO2, 15%-20% of hyperdispersant, 2-3% of triethanolamine, 0.5%-0.8% of defoamer, 5-10% of calcium chloride and the balance of water, and the sum of the components is 100%. The preparation method of the nano modified cement mixing pile additive comprises the steps of taking the components in the percentage by mass, firstly, adding the hyperdispersant, the defoamer and the calcium chloride to mixing water for stirring and dissolving, filtering out insoluble materials to obtain a solution A, next, adding the nano SiO2 and the triethanolamine to the solution A, and stirring and mixing evenly. The nano modified cement mixing pile additive is capable of greatly improving the early-stage mechanical properties of the cement mixing pile under the ocean rock-soil environment and optimizing the mechanical property development law, and also improving the capability of the cement mixing pile resisting the ocean corrosive environment.