Effect of BaO on mechanical and hydration characteristic of C8A6P as predominant mineral in phosphoaluminate cement

被引：4
|
作者：
Wang, Shoude [1 ]
Liu, Yu [2 ]
Yang, Shuai [1 ]
Fu, Xinghua [2 ]
Cheng, Xin [1 ]
机构：
[1] Univ Jinan, Shandong Prov Key Lab Preparat & Measurement Bldg, Jinan 250022, Peoples R China
[2] Shenzhen Gangchuang Bldg Mat CO LTD, Shenzhen 518051, Peoples R China
来源：
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY | 2020年 / 139卷 / 06期
关键词：
Calcium phosphoaluminate; Barium; Hydration; Compressive strength; CALCIUM ALUMINATE CEMENT; MOLECULAR-DYNAMICS; SURFACE-COATINGS; CONCRETE; CHLORIDE; CORROSION; STEEL;
D O I：
10.1007/s10973-019-08723-6
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Phosphoaluminate cement clinker (PAC) was one type of cementitious material due to its high durability and mechanical performance. As the predominant mineral phase in PAC, the high-temperature formation and property of calcium phosphoaluminate mineral (C(8)A(6)P) were related closely with hydration and mechanical characteristic for PAC. Thus, the influence of BaO on the performance of C(8)A(6)P mineral phase was investigated carefully in this paper. It was found that BaO of 17.5-20% content could endow C(8)A(6)P mineral with predominant mechanical performance. This was due to the fact that C(8)A(6)P mineral was activated by BaO. Excessive BaO would lead to the formation of new unexpected phase BaO center dot Al2O3. The limited solid solubility of BaO in C(8)A(6)P mineral was 20%. The addition of BaO changed the ratio of hydration products of C-2(A,P)H-8 and C(A,P)H-10 for C(8)A(6)P mineral.
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页码：3499 / 3506
页数：8
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