Experimental Study on Cracking Property of Self-Compacting Concrete

2008 ◽  
Vol 400-402 ◽  
pp. 433-438
Author(s):  
Nan Guo Jin ◽  
Xian Yu Jin ◽  
Xiang Lin Gu
Keyword(s):  
Experimental Study ◽  
Tensile Strain ◽  
Experimental Results ◽  
Flexural Test ◽  
Self Compacting Concrete ◽  
Free Shrinkage ◽  
Normal Concrete ◽  
Strength Grade ◽  
Mix Proportion ◽  
Key Parameter

Taking free shrinkage as the key parameter in evaluating cracking of concrete, the cracking properties of self-compacting concrete with strength grade of C35 and C50 were investigated based on ring and slab restraint tests. Meanwhile, the ultimate tensile strain of self-compacting concrete was studied by using flexural test. Experimental results show that the shrinkage of self-compacting concrete is lower than that of normal concrete. Self-compacting concrete cracks later than normal concrete with the same strength grade. Although the ultimate flexural tensile strains of self-compacting concrete in 7 d and 28 d are a little bit lower than that of the normal concrete, it can still be concluded from the research that the cracking property of self-compacting concrete can be greatly improved by using proper mix proportion.

Experimental Study of Mix Proportion on Masonry Mortar’s Common Strength Grade in Material Engineering and its Application

2013 ◽  
Vol 763 ◽  
pp. 250-253
Author(s):  
Hong Liang Huang ◽  
Hui Fang Zhang ◽  
Yan Fang Li ◽  
Guo Qing Ma ◽  
Min Feng Li
Keyword(s):  
Experimental Study ◽  
Comparative Analysis ◽  
Fly Ash ◽  
Strength Grade ◽  
Material Engineering ◽  
Mix Proportion ◽  
The Common ◽  
Masonry Mortar ◽  
Construction Works

It based the common strength grade of masonry mortar in construction works on two mixing materials that include composite paste and fly ash paste and an admixture. It spent nearly a year's time on the trial distribution, mixing, forming, form removal, maintenance, measuring strength and adjusting the mix ratio. It’s aimed for seeking the optimum mix proportion of masonry mortar through the comparative analysis of strength of Various proportions of masonry mortar, Promotion and application to be in material engineering.

Study on Durability of Concrete with Machine-Made Sand Part II: Long-Term Carbonization

2013 ◽  
Vol 438-439 ◽  
pp. 10-14
Author(s):  
Shun Bo Zhao ◽  
Yu Tao Li ◽  
Yang Yang Xu
Keyword(s):  
Test Data ◽  
Experimental Results ◽  
River Sand ◽  
Ordinary Concrete ◽  
Strength Grade ◽  
Mix Proportion ◽  
Reasonable Range ◽  
Durability Of Concrete

This paper introduces the experimental results of long-term carbonization of concrete with machine-made sand (MSC), which is part of the studies on durability of this new concrete. Three strength grades of concrete C30, C40 and C50, and the contents of stone powder in machine-made sand of 5%, 9% and 13% in mass were considered in the mix proportion of concrete with machine-made sand. The ordinary concrete with natural river sand in the same strength grade was tested at the same time for comparison. The test was conducted for 360 days, and the results showed that the carbonization of MSC was similar with that of ordinary concrete, the carbonized depth increased with the increasing carbonization time. The carbonization was rapid at initial before 28 days, and became slowly with the time going by. The content of stone powder in machine-made sand affected the carbonization of MSC in some extent, which should be limited in a reasonable range. Based on the test data, the formulas for forecasting the carbonized depth of MSC are suggested.

Theoretical Analysis and Experimental Study of Strength Matching between Mortarless Grouted Concrete and Block Material

2013 ◽  
Vol 368-370 ◽  
pp. 1022-1026
Author(s):  
Ming Song Yi ◽  
Yan Qiu Xu ◽  
Ni Lou ◽  
Lan Ying Zhang ◽  
Guo Hui Yi
Keyword(s):  
Experimental Study ◽  
Compressive Strength ◽  
Theoretical Analysis ◽  
Experimental Results ◽  
Joint Work ◽  
Matching Problem ◽  
Nonlinear Simulation ◽  
Strength Grade

In order to solve the strength matching problem of grouted concrete and block in mortarless grouted masonry, the article adopts the ANSYS nonlinear simulation to establish different strength grade models. And the result shows that, when the strength matching relationship between the mortarless block and the concrete reaches fc/fb=1~2, the grouted concrete and block compressive strength are brought into full play without material waste. The result is close to fcu/fcb = 1.5~3.5 (gross area) from the literature[1]. It is clear that, when the compressive strength of the two is close, their joint work can exert the best effects. It fits the experimental results and provides reference to the application of mortarless grouted block.

scholarly journals An Experimental Study on Geopolymer Concrete by Using Flyash, GGBS and Alccofine

2021 ◽  
Vol 1197 (1) ◽  
pp. 012007
Author(s):  
O. Nagaraju ◽  
J. Ritesh ◽  
T C Venkata Reddy
Keyword(s):  
Experimental Study ◽  
Tensile Strength ◽  
Fly Ash ◽  
Industrial Waste ◽  
Geopolymer Concrete ◽  
Inorganic Polymers ◽  
Normal Concrete ◽  
Split Tensile Strength ◽  
Waste Products ◽  
Mix Proportion

Abstract In this study concentrated on the development of GPC by using industrial waste products such as fly ash, alccofine (1203) and GGBS. GPC is an advanced eco-friendly concrete manufactured by activating source minerals rich in alumina and silica by alkaline liquids to form aluminosilicates based on inorganic polymers. Where cement was complete replaced with mix proportion of 50% fly ash, 25% alccofine (1203) and 25% GGBS for different molarities (8M, 10M and 12M) of alkaline activators which is solving the problem of unsustainable usage of limestone and pollutant related to the manufacturing process of cement. The present paper reports the cube compressive strength, cylindrical split tensile strength and flexural strength of GPC and which is compared with M25 grade of control specimens. It was observed that the strength of GPC is increased than normal concrete as molarities increases of 8 M, 10M and 12M. The paper explains about the effectiveness of fly ash, alccofine (1203) and GGBS materials.

Experimental Study of Mix Proportion on Masonry Mortar’s Common Strength Grade in Material Engineering and its Application

2012 ◽  
Vol 578 ◽  
pp. 125-128
Author(s):  
Hong Liang Huang ◽  
Hui Fang Zhang ◽  
Yan Fang Li ◽  
Guo Qing Ma ◽  
Min Feng Li
Keyword(s):  
Experimental Study ◽  
Comparative Analysis ◽  
Fly Ash ◽  
Strength Grade ◽  
Material Engineering ◽  
Mix Proportion ◽  
The Common ◽  
Masonry Mortar ◽  
Construction Works

It based the common strength grade of masonry mortar in construction works on two mixing materials that include composite paste and fly ash paste and an admixture. It spent nearly a year's time on the trial distribution, mixing, forming, form removal, maintenance, measuring strength and adjusting the mix ratio. It’s aimed for seeking the optimum mix proportion of masonry mortar through the comparative analysis of strength of Various proportions of masonry mortar, Promotion and application to be in material engineering.

scholarly journals Experimental study of the $ \gamma p \rightarrow K^{0}\Sigma^{+}$, $ \gamma n \rightarrow K^{0} \Lambda$, and $ \gamma n \rightarrow K^{0} \Sigma^{0}$ reactions at the Mainz Microtron

2019 ◽  
Vol 55 (11) ◽  
Author(s):  
C. S. Akondi ◽  
K. Bantawa ◽  
D. M. Manley ◽  
S. Abt ◽  
P. Achenbach ◽  
...  
Keyword(s):  
Experimental Study ◽  
Cross Sections ◽  
Differential Cross ◽  
Legendre Polynomials ◽  
Neutral Kaon ◽  
Experimental Results ◽  
Differential Cross Sections ◽  
Theoretical Predictions ◽  
Photoproduction Reactions ◽  
Insight Into

Abstract.This work measured $ \mathrm{d}\sigma/\mathrm{d}\Omega$dσ/dΩ for neutral kaon photoproduction reactions from threshold up to a c.m. energy of 1855MeV, focussing specifically on the $ \gamma p\rightarrow K^0\Sigma^+$γp→K0Σ+, $ \gamma n\rightarrow K^0\Lambda$γn→K0Λ, and $ \gamma n\rightarrow K^0 \Sigma^0$γn→K0Σ0 reactions. Our results for $ \gamma n\rightarrow K^0 \Sigma^0$γn→K0Σ0 are the first-ever measurements for that reaction. These data will provide insight into the properties of $ N^{\ast}$N* resonances and, in particular, will lead to an improved knowledge about those states that couple only weakly to the $ \pi N$πN channel. Integrated cross sections were extracted by fitting the differential cross sections for each reaction as a series of Legendre polynomials and our results are compared with prior experimental results and theoretical predictions.

scholarly journals Numerical and experimental study of the dynamic factor of the dynamic load on the urban railway

2020 ◽  
Vol 29 (1) ◽  
pp. 195-202
Author(s):  
Tran Anh Dung ◽  
Mai Van Tham ◽  
Do Xuan Quy ◽  
Tran The Truyen ◽  
Pham Van Ky ◽  
...  
Keyword(s):  
Experimental Study ◽  
Dynamic Load ◽  
Dynamic Measurement ◽  
Experimental Results ◽  
Load Factor ◽  
Dynamic Factor ◽  
Experimental Measurements ◽  
Train Speed ◽  
Dynamic Load Factor

AbstractThis paper presents simulation calculations and experimental measurements to determine the dynamic load factor (DLF) of train on the urban railway in Vietnam. Simulation calculations are performed by SIMPACK software. Dynamic measurement experiments were conducted on Cat Linh – Ha Dong line. The simulation and experimental results provide the DLF values with the largest difference of 2.46% when the train speed varies from 0 km/h to 80 km/h

Experimental Study of a Tanker Ship Squat in Shallow Water

2014 ◽  
Vol 66 (2) ◽  
Author(s):  
Mohammadreza Fathi Kazerooni ◽  
Mohammad Saeed Seif
Keyword(s):  
Experimental Study ◽  
Shallow Water ◽  
Experimental Approach ◽  
Model Tests ◽  
Ship Hull ◽  
Experimental Results ◽  
Shallow Waters ◽  
Towing Tank ◽  
Ship Model

One of the phenomena restricting the tanker navigation in shallow waters is reduction of under keel clearance in the terms of sinkage and dynamic trim that is called squatting. According to the complexity of flow around ship hull, one of the best methods to predict the ship squat is experimental approach based on model tests in the towing tank. In this study model tests for tanker ship model had been held in the towing tank and squat of the model are measured and analyzed. Based on experimental results suitable formulae for prediction of these types of ship squat in fairways are obtained.

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