Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
HIGH-STRENGTH PORTLAND CEMENT SLURRY FOR ULTRA-HIGH TEMPERATURE CEMENTING, PREPARATION METHOD THEREFOR AND APPLICATION THEREOF
A high-strength Portland cement slurry for ultra-high-temperature cementing, a preparation method therefor and an application thereof. In parts by weight, the composition of the cement slurry comprises: 100 parts of Portland cement, 4-6 parts of a high temperature anti-cracking material, 80-105 parts of a high-temperature reinforcing material, 70-78 parts of water, 0.5-1.5 parts of a dispersant, 1-3 parts of a fluid loss reducer, 0.5-2.5 parts of a retarder and 0.2-0.5 parts of a defoamer; the high-temperature reinforcing material is a combination of acid-washed quartz sand, metakaolin and aluminum sulfate, a combination of acid-washed quartz sand, metakaolin, feldspar and sodium sulfate, or a combination of acid-washed quartz sand, metakaolin, feldspar and calcium nitrite. The cement slurry has good settling stability, rapid strength development in low temperatures, high compressive strength of cement stone at a high temperature of 600° C., and stable development of long-term high-temperature compressive strength.
HIGH-STRENGTH PORTLAND CEMENT SLURRY FOR ULTRA-HIGH TEMPERATURE CEMENTING, PREPARATION METHOD THEREFOR AND APPLICATION THEREOF
A high-strength Portland cement slurry for ultra-high-temperature cementing, a preparation method therefor and an application thereof. In parts by weight, the composition of the cement slurry comprises: 100 parts of Portland cement, 4-6 parts of a high temperature anti-cracking material, 80-105 parts of a high-temperature reinforcing material, 70-78 parts of water, 0.5-1.5 parts of a dispersant, 1-3 parts of a fluid loss reducer, 0.5-2.5 parts of a retarder and 0.2-0.5 parts of a defoamer; the high-temperature reinforcing material is a combination of acid-washed quartz sand, metakaolin and aluminum sulfate, a combination of acid-washed quartz sand, metakaolin, feldspar and sodium sulfate, or a combination of acid-washed quartz sand, metakaolin, feldspar and calcium nitrite. The cement slurry has good settling stability, rapid strength development in low temperatures, high compressive strength of cement stone at a high temperature of 600° C., and stable development of long-term high-temperature compressive strength.
HIGH-STRENGTH PORTLAND CEMENT SLURRY FOR ULTRA-HIGH TEMPERATURE CEMENTING, PREPARATION METHOD THEREFOR AND APPLICATION THEREOF
ZHANG HUA (Autor:in) / JIN JIANZHOU (Autor:in) / YU YONGJIN (Autor:in) / QU CONGFENG (Autor:in) / QI FENGZHONG (Autor:in) / XU MING (Autor:in) / LIU SHUOQIONG (Autor:in) / WANG ZHAOHUI (Autor:in) / GUO YUCHAO (Autor:in) / LIU JILIANG (Autor:in)
07.09.2023
Patent
Elektronische Ressource
Englisch
IPC:
C04B
Kalk
,
LIME
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