PMID- 38172537
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20240106
IS  - 2045-2322 (Electronic)
IS  - 2045-2322 (Linking)
VI  - 14
IP  - 1
DP  - 2024 Jan 3
TI  - Evolutionary patterns and microscopic mechanisms of strength in mine tailings 
      backfilled with waste glass.
PG  - 435
LID - 10.1038/s41598-023-50807-9 [doi]
LID - 435
AB  - In order to promote the sustainable use of resources and reduce the waste of 
      waste glass and tailings resources. The present study focuses on a fluorite mine 
      as the research subject, utilizing coarse tailings, fine tailings, cement 
      substitute-curing agent, and recycled waste glass as the primary raw materials. 
      It investigates the changes in compressive strength of coarse tailing with 
      varying sand- binder ratios and glass content at 3-day, 7-day, and 28-day 
      intervals when the filling slurry concentration is set at 77% and the ratio of 
      coarse tailings to fine tailings is maintained at 2:1. The findings indicate that 
      there is minimal impact on the compressive strength of test blocks when using a 
      sand binder ratio of 4:1 and a glass sand content below 10%. However, once the 
      glass sand content exceeds 10%, a significant decline in compressive strength 
      occurs. Scanning electron microscope (SEM) images reveal ettringite crystal 
      formation in test blocks with both 0% and 25% glass sand content due to high 
      levels of Na(2)O in the glass sand. This leads to internal expansion within test 
      blocks resulting in reduced strength. Notably, when using a sand-binder ratio of 
      8:1 along with a glass sand content of 25%, early strength characteristics are 
      observed for test blocks. Furthermore, incorporating glass sand has little 
      influence on late-stage strength for backfill when employing either an 8:1 or 
      12:1 sand-binder ratio. Based on this experiment conducted under conditions 
      including mass concentration of 77%, the optimal 
      waste-glass-to-mine-tailings-filling-sand-binder-ratio is determined as 8:1with a 
      corresponding glass content of 25%.
CI  - (c) 2024. The Author(s).
FAU - Deng, Daiqiang
AU  - Deng D
AD  - College of Civil Engineering, Xiangtan University, Xiangtan, 411105, China.
FAU - Gao, Yu
AU  - Gao Y
AD  - College of Civil Engineering, Xiangtan University, Xiangtan, 411105, China. 
      202121572179@smail.xtu.edu.cn.
FAU - Chen, Zimin
AU  - Chen Z
AD  - College of Civil Engineering, Xiangtan University, Xiangtan, 411105, China.
FAU - Wang, Ye
AU  - Wang Y
AD  - College of Civil Engineering, Xiangtan University, Xiangtan, 411105, China.
LA  - eng
PT  - Journal Article
DEP - 20240103
PL  - England
TA  - Sci Rep
JT  - Scientific reports
JID - 101563288
SB  - IM
PMC - PMC10764897
COIS- The authors declare no competing interests.
EDAT- 2024/01/04 11:43
MHDA- 2024/01/04 11:44
PMCR- 2024/01/03
CRDT- 2024/01/03 23:38
PHST- 2023/08/15 00:00 [received]
PHST- 2023/12/26 00:00 [accepted]
PHST- 2024/01/04 11:44 [medline]
PHST- 2024/01/04 11:43 [pubmed]
PHST- 2024/01/03 23:38 [entrez]
PHST- 2024/01/03 00:00 [pmc-release]
AID - 10.1038/s41598-023-50807-9 [pii]
AID - 50807 [pii]
AID - 10.1038/s41598-023-50807-9 [doi]
PST - epublish
SO  - Sci Rep. 2024 Jan 3;14(1):435. doi: 10.1038/s41598-023-50807-9.