Results 121 to 130 of about 8,495 (295)

Enhancing performance of recycled aggregate concrete with supplementary cementitious materials

Cleaner Materials
The substitution of natural coarse aggregates (NCA) by recycled coarse aggregates (RCA) is part of the environmental approach aimed at reducing waste and preserve natural resources.
Abba Fatiha, Ezziane Karim, Adjoudj Mhamed, Farid Abed   +3 more
doaj   +1 more source

Review and prospects of shear test of bolted rock joints

Deep Underground Science and Engineering, EarlyView.
The laboratory shear test equipment, test method, and numerical simulation of bolted rock joints were summarized. The shortcomings and limitations of the current research were analyzed, and the research prospects were proposed. Abstract Rock bolting is a critical approach in geotechnical engineering for supporting weak rocks.
Shulin Ren, Fan Yang, Manchao He, Yong Yuan, Zhigang Tao   +4 more
wiley   +1 more source

Multiple injection techniques to stimulate complex fracture networks in coal reservoirs: A case study on gas disaster reduction of subsurface coal mine in southwest China

Deep Underground Science and Engineering, EarlyView.
An experimental device for physical simulation of hydraulic fracturing, comprising: a load‐bearing mechanism with multiple interconnected plates that collectively form an sample chamber; a load‐generating mechanisms, with multiple load‐generating mechanisms arranged within the experimental chamber.
Delei Shang, Farui Shi, Jun Lu, Minghui Li, Cunbao Li, Heping Xie   +5 more
wiley   +1 more source

Functional Performance and Comparative Sustainability Assessment of Cementitious Composites Using Supplementary Cementitious Materials (SCMs)

Advances in Civil Engineering
To evaluate the potential of fly ash (FA) and ground granulated blast furnace slag (GGBFS) as supplementary cementitious materials (SCMs) in terms of sustainability and functional performance, both concrete and mortar samples were prepared with GGBFS or ...
Mohammad Zunaied Bin Harun, Ebenezer Fanijo, Md Delwer Hossain Riad, Tanvir Mustafiz Khan, Al Shahrier Mohammad Zisan   +4 more
doaj   +1 more source

Machine learning assisted design of low-carbon aluminosilicate cementitious composites with diverse raw materials and target mechanical strength

Case Studies in Construction Materials
The synergistic design of cementitious composites with low carbon emission and high performance has been the continuous pursuit in the field. Despite great efforts have been drawn for decades on exploring various low-carbon raw materials, there remain ...
Jinyang Jiang, Yi Liu, Junlin Lin, Tao Yang, Fengjuan Wang   +4 more
doaj   +1 more source

Advancing mine pillar design: Evaluating traditional methods and integrating AI for enhanced stability of pillars in the Great Dyke, Zimbabwe

Deep Underground Science and Engineering, EarlyView.
B1 is bord width 1, B2 is bord width 2, L is the pillar length, W is the pillar width, red color and letter A represent the pillars, and white color and number 1 represent excavated areas. Pstress is the average pillar stress; σv is the vertical component of the virgin stress, MPa; and e is the areal extraction ratio. e = B o B o + B P ${\rm{e}}=\frac{{
Tawanda Zvarivadza, Hendrik Grobler, Peter Apata Olubambi, Moshood Onifade, Manoj Khandelwal   +4 more
wiley   +1 more source

Influence of Some Selected Supplementary Cementitious Materials on Workability and Compressive Strength of Concrete – A Review [PDF]

, 2019
Premature deterioration of our nation’s concrete structures has been a persistent and frustrating problem to those responsible for maintaining them as well as to the public.
Arum, Chinwuba, Mark, Grace, Okeke, C., Ede, A. N., Bamigboye, Gideon, Olofinnade, O. M., Oyebisi, S.O   +6 more
core   +2 more sources

The use of additive manufacturing in self-healing cementitious materials: A state-of-the-art review

Developments in the Built Environment
This paper presents a state-of-the-art review on the application of additive manufacturing (AM) in self-healing cementitious materials. AM has been utilized in self-healing cementitious materials in three ways: (1) concrete with 3D-printed capsules ...
Zhi Wan, Yading Xu, Shan He, Erik Schlangen, Branko Šavija   +4 more
doaj   +1 more source

Can superabsorbent polymers mitigate shrinkage in cementitious materials blended with supplementary cementitious mateirals?

, 2016
A promising way to mitigate autogenous shrinkage in cementitious materials with a low water-to-binder ratio is internal curing by the use of superabsorbent polymers.
Snoeck, Didier, Jensen, Ole Mejlhede, De Belie, Nele   +2 more
core  

Fracture evolution of a thick soft protection layer and the water inrush mechanism in overburden under longwall mining

Deep Underground Science and Engineering, EarlyView.
Through shear–tensile creep tests and viscoelastic modeling, the fracture evolution of thick soft protective layers is clarified. Results show thickness‐dependent rheological failure modes that govern four types of roof water inrush, providing a mechanism‐based framework for hazard prediction and control. Abstract In the Jurassic coal‐bearing strata of
Mengnan Liu, Wei Qiao, Xianggang Cheng, Xiangsheng Meng, Peichao Feng   +4 more
wiley   +1 more source