Results 71 to 80 of about 121,452 (195)

Study on Early Shrinkage Deformation and Crack Resistance of UFA High Performance Concrete in Highway Pavement Construction

Chemical Engineering Transactions, 2016
This paper mainly studies the early autogenous shrinkage characteristics of Ultra-Fine Fly Ash (UFA) and the influence of UFA on the early cracking sensitivity of concrete. Use UFA equivalent weight to replace the cement preparation of UFA road concrete,
Q.F. Li, Y.D. He
doaj   +1 more source

Collagen Substitutes in Oral Soft Tissue Augmentation: An In Vitro–Ex Vivo Study on Expansion and Elasticity

Clinical and Experimental Dental Research, Volume 12, Issue 5, October 2026.
ABSTRACT Objective This study aimed to evaluate the hydration‐induced volumetric expansion and elasticity of collagen‐based soft tissue substitutes following exposure to blood using three‐dimensional (3D) analysis and high‐frequency ultrasonography (HFUS). Materials and Methods Seven commercially available collagen matrices were analyzed: Fibro‐Gide (6 
Leonardo Mancini, Stephanie Wenk, Lorenzo Tavelli, Ronald E. Jung, Nadja Naenni, Daniel S. Thoma   +5 more
wiley   +1 more source

Accurate determination of the 'time-zero' of autogenous shrinkage in alkali-activated fly ash/slag system

, 2019
Autogenous shrinkage based on different 'time-zero' may result in underestimation/overestimation on the cracking potential of alkali-activated fly ash/slag (AAFS).
Yang, X., Hu, J., Wang, H., Ma, Y., Zhang, Z.   +4 more
core   +1 more source

Comparison of calculation models’ estimates with actual measured autogenous shrinkage in High-Performance Cement Composites

MATEC Web of Conferences, 2018
There are several calculation models for estimation of shrinkage in concrete. The most popular ones are: ACI-209R-92 method, Bažant-Baweja model (B3), Gardner’a-Lockman’a model (GL 2000), CEB-FIP (CEB MC90-99), Spanish model (EHE), EuroCode method (EC-2)
Zieliński Adam, Federowicz Karol, Kaszyńska Maria   +2 more
doaj   +1 more source

Shrinkage Effects of Using Fly Ash instead of Fine Aggregate in Concrete Mixtures

Advances in Materials Science and Engineering, 2020
China is the world’s largest emitter of fly ash, an industrial by-product of coal combustion. Motivated towards greener development, China’s engineering industries must determine how to effectively utilize this by-product, while ensuring environmental ...
Dongsheng Zhang, Pengfei Han, Qiuning Yang, Mingjie Mao   +3 more
doaj   +1 more source

Soft Tissue Volume Augmentation at Single Implant Sites Applying Collagen Matrices or Connective Tissue Grafts: 10‐Year Follow‐Up of a Randomized Controlled Trial

Journal of Esthetic and Restorative Dentistry, Volume 38, Issue 10, Page 1920-1932, October 2026.
ABSTRACT Aim To compare up to 10 years clinical, profilometric and patient‐reported outcomes of implant sites previously augmented using a volume‐stable collagen matrix (VCMX) or connective tissue graft (SCTG) in the aesthetic zone. Methods The original non‐inferiority randomized controlled trial (RCT) enrolled 20 patients who received soft tissue ...
Franz J. Strauss, Margherita G. Liguori, Thomas J. W. Gasser, Nadja Naenni, Ronald E. Jung, Daniel S. Thoma   +5 more
wiley   +1 more source

Sedimentary facies and stacking patterns of fluvio‐deltaic and ‐estuarine deposits from the Palaeoarchean Moodies Group in the Stolzburg Syncline (Barberton Greenstone Belt, South Africa)

The Depositional Record, Volume 12, Issue 4, September 2026.
Drillcore BASE‐5B from the Stolzburg Syncline, Barberton Greenstone Belt, reveals a coarsening‐upward, river‐dominated fluvio‐deltaic succession transitioning upward to a fining‐upward, tide‐dominated‐estuarine succession. Abstract Investigating fluvio‐marine depositional environments from early geological times is of great importance, as they provide ...
Sanway Mukhopadhyay, Dennis Schreiber, Nina Wichern, David De Vleeschouwer, Christoph Heubeck, Marcello Gugliotta   +5 more
wiley   +1 more source

Very early age autogenous shrinkage: Governed by chemical shrinkage or self-desiccation?

, 2002
Autogenous shrinkage is often fully attributed to self-desiccation, or the lowering of internal relative humidity with age. Research at VTT has shown that autogenous shrinkage can still occur even if the humidity is at 100%, immediately after casting ...
Holt, Erika; id_orcid
core   +4 more sources

Internal curing of high strength concrete based on saturated microporous cenospheres

Case Studies in Construction Materials
The development of high-strength concrete is hindered by its substantial autogenous shrinkage. However, the implementation of internal curing technology has been shown to mitigate this autogenous shrinkage of concrete effectively.
Zhaolai Xia, Wei Huang, Jiawei Zhang, Xuhui Li, Ruoxin Wang, Fenqin Zhang, Bentian Yu   +6 more
doaj   +1 more source

Enhancing the Autogenous Shrinkage Behaviour of High-Strength Concrete by Using Water Absorption Polymer Balls

Civil and Environmental Engineering
Autogenous shrinkage is typically regarded as a self-desiccation process, considered beneficial for concrete. because it occurs at the early ages of concrete hardening.
Al-Mulla Ikram, Al-Rihimy Ammar
doaj   +1 more source