Volume deformation of steam-cured concrete with fly ash during and after steam curing

2021 ◽  
Vol 306 ◽  
pp. 124854
Author(s):  
Penggang Wang ◽  
Hua Fu ◽  
Tengfei Guo ◽  
Wenqiang Zuo ◽  
Haitao Zhao ◽  
...  
Keyword(s):  
Fly Ash ◽  
Steam Curing ◽  
Volume Deformation

Autogenous Volume Deformation and Creep Properties Analysis of C60 High Performance Concrete and C60 High Strength Concrete

2013 ◽  
Vol 639-640 ◽  
pp. 364-367 ◽  
Author(s):  
Xiao Bo Chen ◽  
Jian Yin ◽  
Wei Min Song
Keyword(s):  
Fly Ash ◽  
High Strength Concrete ◽  
High Performance ◽  
High Performance Concrete ◽  
High Strength ◽  
Engineering Practice ◽  
Volume Deformation ◽  
Creep Properties ◽  
Strength Concrete ◽  
Creep Coefficient

Based on engineering practice, autogenous volume deformation and creep properties of C60 high performance concrete(C60 HPC) and C60 high strength concrete(C60 HSC) were evaluated in the study. The results showed that the cement partly-replaced with fly ash could significantly decrease the creep deformation, creep coefficient and creep degree. In comparison with C60 HSC, the creep coefficient and creep degree of C60 HPC were decreased 17.9％and15.8％ in 28 days, 22.9% and 21.0% in 270 days. For C60 HPC and C60 HSC at the same age, autogenous volume deformation of C60 HPC is greater than that of C60 HSC, but they were both less than 80×10-6 , and the autogenous volume deformation was basically completed in 7 days.

Empirical Prediction Models for Strength Gain Properties of Fly Ash Based Concrete Subjected to Accelerated Curing

2018 ◽  
Vol 1150 ◽  
pp. 73-90
Author(s):  
Vallarasu Manoharan Sounthararajan
Keyword(s):  
Fly Ash ◽  
Prediction Models ◽  
Pulse Velocity ◽  
Hot Water ◽  
Experimental Investigations ◽  
Strength Gain ◽  
Steam Curing ◽  
Empirical Prediction ◽  
Accelerated Curing ◽  
Water Curing

Experimental investigations on the early age, strength gain properties of fly ash blended cement concretes containing low and high volume fly ash replacement were studied. Concrete mixes were prepared with two different fly ash contents and varying concrete ingredients with water to binder ratio (w/b), fine to coarse aggregate ratio (F/c) and accelerator dosage. Five different curing techniques, namely controlled humidity curing; hot air oven curing, steam curing, hot water curing and normal water curing were adopted for curing the fly ash based concretes. Test results showed evidence the influence of accelerating admixtures and accelerated curing for obtaining the high early strength properties in fly ash mixed concrete. Most notably a maximum 1 day compressive strength of 40.20 MPa and 34.60 MPa with low (25%) and high (50%) volume fly ash concretes were obtained respectively in this study. Experimental results clearly indicated that the improvements on the strength gain properties with the careful selection of mix ingredients; accelerator addition and accelerated curing in fly ash based concrete mixes. Also, significant improvements on the flexural strength, elastic modulus, dynamic modulus and the ultrasonic pulse velocity test were noticed.

Effect of steam curing on compressive strength and microstructure of high volume ultrafine fly ash cement mortar

2021 ◽  
Vol 266 ◽  
pp. 120894
Author(s):  
Jin Yang ◽  
Huachao Hu ◽  
Xingyang He ◽  
Ying Su ◽  
Yingbin Wang ◽  
...  
Keyword(s):  
Compressive Strength ◽  
Fly Ash ◽  
Cement Mortar ◽  
High Volume ◽  
Steam Curing

Study of Sleeper Concrete early Strength Based on Orthogonal Experiment

2013 ◽  
Vol 448-453 ◽  
pp. 1316-1320
Author(s):  
Hai Chao Wang ◽  
Ke Qiu ◽  
Shu Ling Gao
Keyword(s):  
Fly Ash ◽  
Design Method ◽  
Orthogonal Experiment ◽  
Orthogonal Design ◽  
Steam Curing ◽  
Cement Ratio ◽  
Water Cement Ratio ◽  
Early Strength ◽  
The Difference ◽  
Railway Sleeper

Using orthogonal design method of four factors and three levels, make a mix ratio experiment on sleeper concrete of China's railway sleepers, used steam curing concrete early compressive strength (stripping strength) as evaluation index. Study on different experimental factors of water-cement ratio, sand ratio, fly ash and admixture differently influenced on the early strength of sleeper concrete and analyze the difference impact of each factor and level for the orthogonal experiment. The result shows that the admixture is the main factor for early strength of concrete, followed by fly ash, water-cement ratio and sand ratio. It can provide technical guidance for railway sleeper field and has practical value.

Use of Artificial Neural Network for Modelling the Interaction between Fly Ash and Lime under Steam Curing

2007 ◽  
Vol 66 (4) ◽  
pp. 187-192
Author(s):  
S. Maitra ◽  
A. J. Pal ◽  
N. Bandyopadhyay ◽  
A. Basumajumdar ◽  
A. K. Das
Keyword(s):  
Neural Network ◽  
Artificial Neural Network ◽  
Fly Ash ◽  
Steam Curing ◽  
Artificial Neural

scholarly journals Effect of Combination of Alumina-Silica Rich Minerals with Fly Ash on Structural Behaviour of the Basalt Fibre Reinforced Geopolymer Concrete

2019 ◽  
Vol 9 (2) ◽  
pp. 3380-3386
Keyword(s):  
Fly Ash ◽  
Carbon Dioxide Emissions ◽  
Climatic Changes ◽  
Industrial Wastes ◽  
Geopolymer Concrete ◽  
Structural Behaviour ◽  
Steam Curing ◽  
Basalt Fibre ◽  
Cement Production ◽  
Oil Fly Ash

Cement production is one of the major C02 emitter which contributes around 8% of the world’s carbon dioxide emissions. So the Engineers are in the need of developing alternate material for cement to reduce the effect of vulnerable climatic changes in the world. This paper aims at presenting the experimental study on effect of combination of silica rich minerals with fly ash based geopolymer concrete. Fly ash was found to be successful in enhancing the performance of geopolymer concrete. The Utilization of more industrial wastes will promisingly contribute for reducing the environmental pollution. To determine the effective admixture combination with fly ash in geopolymer concrete, industrial wastes such as silica fume, GGBS, Metakaolin, palm oil fly ash were used. The concrete mixes were designed with 60 percentile of fly ash and 40 percentile of other industrial wastes to replace the cement in Geopolymer concrete. The Concrete specimens were casted and cured at different conditions namely Oven curing, Steam curing and sunlight. The Compressive, tensile and flexural strength behaviors were determined for the designed concrete mixes and the results were presented.

scholarly journals PEMAKAIAN FLY-ASH SEBAGAI CEMENTITIOUS PADA BETON MUTU TINGGI DENGAN STEAM CURING (THE USE OF FLY-ASH AS CEMENTITIOUS ON HIGH-STRENGTH CONCRETE WITH STEAM CURING)

2014 ◽  
Vol 10 (2) ◽  
Author(s):  
Erwin Rommel ◽  
Yunan Rusdianto
Keyword(s):  
Fly Ash ◽  
Precast Concrete ◽  
Chemical Properties ◽  
High Strength ◽  
Steam Curing ◽  
Initial Strength ◽  
Speed Up ◽  
Physical And Chemical ◽  
And Chemical Properties

Erwin Rommel1 & Yunan Rusdianto2Jurusan Teknik Sipil Fakultas Teknik Universitas Muhammadiyah MalangAlamat Korespondensi :Jalan Raya Tlogomas 246 Malang 65144email : [email protected] HP 08123314432ABSTRACTThe use of fly-ash as cementitious will be made to utilize physical and chemical properties offly-ash that has a dominan of silica and good of modulus fines. The use of steam curing will be donein this study which can speed up the cycle of making concrete. This is advantageous in the productionof precast concrete and velocity field construction.The research was conducted by making concrete cube 15x15x15 cm for 80 pieces and thentested the compressive strength and absorption of concrete. Achieve the quality of concrete madewith the provision of K600 with giving the fly-ash respectively 7.5%, 15% and 30% by weight ofcement.The results of the research obtained by the use of fly-ash as much as 7.5% as a cementitiousthat was given to the steam curing will provide the initial strength of concrete reached 47% ofcompressive strength at 28 days. While the effect of giving fly-ash in concrete has not seen absorptionsignificantly when compared to concrete without fly-ash.Key word : concrete, fly-ash, steam curing

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