کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6672604 | 1427596 | 2018 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Influence of superplasticizers on mechanical properties and workability of cemented paste backfill
ترجمه فارسی عنوان
تأثیر سوپر پلسیتیزرها بر خواص مکانیکی و کارایی واکنش های ریز سیمان
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
چکیده انگلیسی
This paper presents new insights into the mechanical properties and workability of cemented paste backfills (CPBs) containing various superplasticizers. Effects of these admixtures on cement hydration were also evaluated. Five admixtures belonging to the main superplasticizer groups (lignosulfonate, naphthalene, melamine, and polycarboxylate) were used at 5, 7, and 10% by dry mass of binder (a mixture of 20% ordinary Portland cement (OPC) and 80% slag). The effects on CPBs formulated with OPC and the most effective superplasticizers were also studied. Results showed that superplasticizers influence on CPB performances depends on the type and dosage of the admixture. Polycarboxylate presented the best performances and allowed the achievement of the target consistency at lower water content (between 6 and 10%) without altering the mechanical strength of the CPBs. The results also reveal that a reduction in binder content (from 5 to 3%) could be achieved while still conserving CPB strength when using polycarboxylate admixtures.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Minerals Engineering - Volume 116, 15 January 2018, Pages 3-14
Journal: Minerals Engineering - Volume 116, 15 January 2018, Pages 3-14
نویسندگان
Mohamed Bini Coulibaly Mangane, Rabei Argane, Romain Trauchessec, André Lecomte, Mostafa Benzaazoua,