Use of phosphate mine by-products as supplementary cementitious materials

被引：31

作者：

Bahhou, Abdelmoujib ^{[1
]}

Taha, Yassine ^{[1
]}

El Khessaimi, Yassine ^{[1
]}

Idrissi, Hicham ^{[3
]}

Hakkou, Rachid ^{[1
,2
]}

Amalik, Jamal ^{[4
]}

Benzaazoua, Mostafa ^{[1
,5
]}

机构：

[1] Mohammed VI Polytech Univ UM6P, Min Environm & Circular Econ, Lot 660, Hay Moulay Rachid 43150, Ben Guerir, Morocco

[2] Cadi Ayyad Univ UCA, Fac Sci & Technol, IMED Lab, BP 549, Marrakech 40000, Morocco

[3] Mohammed VI Polytech Univ UM6P, Mat Sci Energy & Nanoengn Dept, Lot 660 Hay Moulay Rachid, Ben Guerir 43150, Morocco

[4] OCP INNOVAT, Ave Hassan 2, Khouribga, Morocco

[5] Univ Quebec Abitibi Temiscamingue, Inst Rech Mines & Environm, 445 Boul Univ, Rouyn Noranda, PQ J9X 5E4, Canada

来源：

MATERIALS TODAY-PROCEEDINGS | 2021年 / 37卷

关键词：

Phosphate mine; Waste; Calcined clays; Supplementary cementitious materials; Cement; Mortar;

D O I：

10.1016/j.matpr.2020.07.619

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This work evaluates the potential use of clays by-products produced during phosphate mining as a novel supplementary cementitious material. The evaluation was conducted through (i) determination of physical, chemical, and mineralogical characteristics of samples (ii) the evaluation of clays thermal activation from 500 to 900 degrees C, and (iii) the assessment of the rheological and mechanical properties. Results showed that 800 degrees C was the optimal activation temperature. Substitution of clinker by 20 wt% of calcined clay allows to obtain a compressive strength higher than 22 MPa at 28 days. Consistency and initial setting time values were in agreement with the required cement standard. (C) 2020 Elsevier Ltd. All rights reserved.

引用

页码：3781 / 3788

页数：8

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