Results 61 to 70 of about 65,598 (218)

Estimating Distribution of Concrete Strength Using Quantile Regression Neural Network

open access: yes, 2017
This paper is aimed at demonstrating the possibilities of adapting Quantile Regression Neural Network (QRNN) to estimate the distribution of compressive strength of high performance concrete (HPC).
Yeh, I-Cheng
core   +1 more source

Enhancing Concrete Strength: The Impact of Silica Admixture [PDF]

open access: yesE3S Web of Conferences
Researchers set out to determine if and by what margins Nano silica reduces the compressive strength of concrete. From seven percent to seventeen percent, silica was an ingredient in the concrete mixture. The mix design for M20 grade concrete was cast in
Aakash   +3 more
doaj   +1 more source

Task 4: Testing Iowa Portland Cement Concrete Mixtures for the AASHTO Mechanistic-Empirical Pavement Design Procedure, May 2008

open access: yes, 2008
The present research project was designed to identify the typical Iowa material input values that are required by the Mechanistic-Empirical Pavement Design Guide (MEPDG) for the Level 3 concrete pavement design.

core  

Palm Oil Fuel Ash (POFA) and Eggshell Powder (ESP) as Partial Replacement for Cement in Concrete

open access: yesE3S Web of Conferences, 2018
This study is an attempt to partially replace Ordinary Portland cement (OPC) in concrete with palm oil fuel ash (POFA) and eggshell powder (ESP). The mix proportions of POFA and ESP were varied at 10% of cement replacement and compared with OPC concrete ...
Mohamad Mazizah Ezdiani   +3 more
doaj   +1 more source

Impact resistance of concrete using dovetailed fibres and type 2 synthetic fibres

open access: yes, 2015
This paper investigates the relative performance of new dovetailed (DT) cross section fibres with regard to impact resistance and energy absorption of concrete.
Richardson, Alan, Batey, David
core  

valuation of Mix Proportions and Mechanical Properties of Normal and High-Strength Fibers Concrete

open access: yesPolytechnic Journal, 2019
An experimental program is carried out to evaluate the mix design and mechanical properties of normal strength concrete (NSC) grade 40 MPa and high-strength concrete grade 60 and 80 MPa.
Imad R. Mustafa, Omar Q. Aziz
doaj   +1 more source

Compressive Strength of Concrete with Nano Cement

open access: yes, 2021
Nano technology plays a very vital role in all the areas of research. The incorporation of nano materials in concrete offers many advantages and improves the workability, the strength and durability properties of concrete. In this study an attempt has been made to carry out an experimental investigation on concrete in which cement was replaced with ...
Jemimah Carmichael Milton   +1 more
openaire   +2 more sources

THE EFFECT OF CURING CONDITION ON COMPRESSIVE STRENGTH IN HIGH STRENGTH CONCRETE

open access: yesDiyala Journal of Engineering Sciences, 2009
The paper shows the effect of curing condition on compressive strength in high strength concrete  in three cases (Group A(moist curing in water for 7 days followed by air curing ) ,Group B(curing until the age test in water) and Group C(curing at high temperature 60ºC±2ºC for six days  ) and two types of specimen of cubes (150 x150 and 100 x 100) used ...
openaire   +2 more sources

The relationship between the compressive strength of cement mortar and the chemical composition and fineness of cement

open access: yes, 1993
Includes bibliography.The purpose of this research was to determine a method whereby predictions of compressive strength could be made with regard to the chemical composition and fineness of Portland cement.
James, S D
core  

Contribution of Fill-Concrete Compressive Strength on the Structural Performance of CFSST Columns: An Analytical Study

open access: yesJournal of Engineering
High-rise structures are a significant indication in contemporary urban improvement, mainly in areas characterized by accelerated urban growth and dense population. This type of building should be designed to withstand severe load conditions. Therefore,
Shatha D. Mohammed   +3 more
doaj   +1 more source

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