Results 131 to 140 of about 8,495 (295)

Supplementary cementitious materials comprising dredged sediments

, 2018
A supplementary cementitious material used in combination with an activator such as Portland cement to produce a hydraulic binder. The supplementary cementitious material is based on physico-chemically treated filter cake product extracted from dredged ...
Van Balen, Koen, Horckmans, Liesbeth, Cizer, Ozlem, Snellings, Ruben, VANDEKEYBUS, Jos, Vandewalle, Lucie, DOCKX, Joris   +6 more
core  

USE OF SEWAGE SLUDGE ASH IN CEMENTITIOUS MATERIALS [PDF]

, 2016
The potential for using sewage sludge ash (SSA) in cement mortars and concrete is reviewed. The chemical and physical properties and pozzolanic activity of a range of different incinerated SSA samples indicates the potential to exploit the pozzolanic ...
Vouk, D, Cheeseman, CR, Nakic, D, Stirmer, N   +3 more
core  

Mechanism and disaster control new technology of strong ground pressure manifestation in ultra‐large mining face

Deep Underground Science and Engineering, EarlyView.
In response to the problem of strong mining pressure manifestation along the goaf roadway in a thick coal seam mining area, this study uses a new type of combined blasting roof cutting technology to effectively control the manifestation and deformation of mining pressure along the goaf roadway.
Xiaoding Xu, Manchao He, Jun Yang, Yubing Gao, Qiang Fu, Qing Ma, Yajun Wang   +6 more
wiley   +1 more source

Predicting the degree of reaction of supplementary cementitious materials in cementitious pastes using a pozzolanic test

, 2019
•Pozzolanic test was used to develop two measures for SCM degree of reaction.•Degree of reaction increases as temperature increases but does not depend on w/cm.•Values generally agree with those from literature.•Preliminary results are promising.
Moon, Hoon, Croly, Michael, Suraneni, Prannoy, Ramanathan, Sivakumar, Chung, Chul-Woo   +4 more
core   +1 more source

Dynamic response at the terminus of oblique intersecting joints subjected to stress waves

Deep Underground Science and Engineering, EarlyView.
This study derives the propagation equation for stress waves impinging upon nonlinear oblique intersecting joints. It analyzes the dynamic response at the terminus of nonlinear oblique intersecting joints subjected to stress waves. Abstract To investigate the dynamic response at the terminus of oblique intersecting joints subjected to stress waves, a ...
Gang Hu, Xiang Chen, Honglu Fei, Shijie Bao, Jian Guo   +4 more
wiley   +1 more source

Carbon emission assessment of tunnel infrastructures: From construction to operation

Deep Underground Science and Engineering, EarlyView.
This study develops a lifecycle carbon accounting framework for tunnel infrastructures, covering design, construction, operation, maintenance, and dismantling. Applied to a subsea tunnel case, the framework reveals the carbon emission distribution among four typical tunnel types and highlights potential carbon offset methods for low‐carbon tunnel ...
Luyuan Long, Wout Broere, Xuehui Zhang, Tian Xia, Richard de Nijs   +4 more
wiley   +1 more source

SUPPLEMENTARY CEMENTITIOUS MATERIALS COMPRISING DREDGED SEDIMENTS

, 2016
The object of this invention is a supplementary cementitious material to be used in combination with an activator such as Portland cement to produce a hydraulic binder. The supplementary cementitious material is based on physico-chemically treated filter
Van Balen, Koen, Horckmans, Liesbeth, Cizer, Ozlem, Snellings, Ruben, VANDEKEYBUS, Jos, Vandewalle, Lucie, DOCKX, Joris   +6 more
core  

Upper bound limit analysis of coral reef limestone cavern roof stability incorporating a tension‐shear failure mechanism with tensile‐strength cut‐off

Deep Underground Science and Engineering, EarlyView.
For the roof of coral reef limestone caverns, a novel tension‐shear composite failure mechanism was developed. The most critical tensile crack model was identified using a hybrid optimization algorithm, and the stability of the cavern roof was analyzed accordingly.
Dongsheng Xu, Chenxu Li, Chuantan Hou
wiley   +1 more source

Uniaxial compressive strength prediction and ratio parameter optimization of titanium tailings composite backfill materials using intelligent hybrid models

Deep Underground Science and Engineering, EarlyView.
Based on the 90 datasets, ERT and four optimization algorithms were used to build four hybrid models to predict the UCS of the backfill body. The SMA‐ERT model was the most effective model, and it can reliably guide the design of the backfill ratio parameters. Abstract This study analyzed the feasibility of using titanium (Ti) tailings as a backfilling
Weijun Liu, Zida Liu, Zhixiang Liu
wiley   +1 more source

Effects of different supplementary cementitious materials on durability and mechanical properties of cement composite - Comprehensive review. [PDF]

Heliyon, 2023
Fode TA, Chande Jande YA, Kivevele T.
europepmc   +1 more source