Gel-Dominated Microstructural Evolution and Strength Development in Phosphogypsum-Based PRBA Systems for Road Base Applications.

Ruiyuan Li, Guangdong An, Yuwen Deng, Yonglan Zong, Kai Li, Xiaofeng Huang, Ping Ning, Xin Sun, Quxiu Dai

Abstract read

In one paragraph

Article in Gels (Basel, Switzerland), 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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0citing papers in PubMed

–field-weighted citation impact

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5 · Who and what money

Authors and funding

9 authors.

Ruiyuan LiFaculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China.

Guangdong AnFaculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China.

Yuwen DengFaculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China.

Yonglan ZongFaculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China.

Kai LiFaculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China.

Xiaofeng HuangFaculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China.

Ping NingFaculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China.

Xin SunFaculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China.ORCID 0000-0002-8784-2248

Quxiu DaiFaculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China.

Funding

National Natural Science Foundation of China 52270106, 22266021, 52204362Yunnan Key Laboratory of Phosphogypsum Recycling and Ecological Utilization 202449CE340028Yunnan Province Science and Technology Department 202505AT350002

6 · The paper itself

Abstract

A significant pile-up of phosphogypsum, with utilization under 30% in some areas, has caused serious environmental problems. This study presents a powdered recycled binder-aggregate (PRBA), prepared by activating a phosphogypsum-fly ash-steel slag ternary system via a sodium silicate-calcium hydroxide activator. The optimal L3 at 55% PRBA with PG:FA:SS of 4:3:4 achieved 28-day compressive strength of 9.33 MPa, 22.0% higher than control L0 at 7.65 MPa, reaching 12.47 MPa at 56 days. The C-S-H gel network evolved from 100-200 nm tubular to under 10 nm lamellar structures, reducing average pore diameter from 82 nm to 52.5 nm. Non-isothermal kinetic modeling revealed that C-S-H/AFt dehydration follows Jander three-dimensional diffusion with R

Indexed as

composite activationfly ashhydration kinetic modelphosphogypsumpowdered recycled binder–aggregatesteel slag

Identifiers

PMID42644970

DOI10.3390/gels12080726

PMCPMC13512482

What OpenQuestion holds

Textmetadata

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.