Investigation of the use of continuous particle packing models (PPMs) on the fresh and hardened properties of low-cement concrete (LCC) systems

2019 ◽  
Vol 195 ◽  
pp. 524-536 ◽  
Author(s):  
Mayra T. de Grazia ◽  
Leandro F. M. Sanchez ◽  
Roberto C. O. Romano ◽  
Rafael G. Pileggi
Keyword(s):  
Particle Packing ◽  
Cement Concrete ◽  
Hardened Properties ◽  
Continuous Particle

Mechanical Properties of Concrete with Ground Waste Tire Rubber

1996 ◽  
Vol 1532 (1) ◽  
pp. 66-72 ◽  
Author(s):  
David Fedroff ◽  
Shuaib Ahmad ◽  
Banu Zeynep Savas
Keyword(s):  
Environmental Problem ◽  
The United States ◽  
Strain Response ◽  
Portland Cement Concrete ◽  
Cement Concrete ◽  
Cylinder Strength ◽  
Hardened Properties ◽  
Waste Tire Rubber ◽  
Stiffness Characteristics ◽  
Strength And Stiffness

Because used tires represent an increasingly serious environmental problem in the United States, this study was undertaken to examine the feasibility of using finely ground rubber in Portland-cement concrete. Various percentages of rubber, by weight of cement, were added to a control mix and the effects on the plastic and hardened properties of concrete were investigated. Workability of the mixes was affected, but it was controllable. For hardened concretes, the tests were conducted for compressive strength, split-cylinder strength, modulus of elasticity, and flexural strength. Stress-strain response was also investigated. The strength and stiffness characteristics were markedly reduced for rubcrete mixtures.

scholarly journals Particle Packing Application for Improvement in the Properties of Compressed Stabilized Earth Blocks with Reduced Clay and Silt

2019 ◽  
Vol 9 (4) ◽  
pp. 4538-4542
Author(s):  
S. N. Malkanthi ◽  
A. A. D. A. J. Perera
Keyword(s):  
Particle Size ◽  
Compressive Strength ◽  
Particle Size Distribution ◽  
Size Distribution ◽  
Particle Packing ◽  
Correct Selection ◽  
Soil Mixture ◽  
Silt Content ◽  
Earth Blocks ◽  
Continuous Particle

Soil as a building material has been used in different forms such as mud, adobe, rammed earth and bricks. The present study focuses on producing Compressed Stabilized Earth Blocks (CSEBs) giving attention to the particle size distribution in the soil mixture. The literature established that compressive strength significantly depends on clay and silt content and 25% of clay and silt produce optimum results while no attention has been given to the amount of other, larger particles. Soil grading refers to the combination of different-size particles in a soil mixture. The correct selection of sizes in the correct proportion may cause improvements in CSEB properties. This paper explains the application of particle packing technology for the improvement of CSEB properties. The theoretical concepts provide a continuous particle size distribution, and the soil used for the experiments also has a continuous particle size distribution. The soil used in the experiments was subjected to washing to reduce the clay and silt content. Separated clay and silt and large particles of different sizes were added to the mixture to match particle size distribution to the optimization curves as explained in particle packing theories. The experimental results show that the CSEB properties can be significantly improved by modifying particle size distribution to fit the suggested optimization curves. According to the results, the compressive strength improved by more than 50% with different amounts of cement stabilization. Significant improvements in the dry densities and water absorption ratios of blocks were observed with this particle size modification.

scholarly journals An Experimental Study on Cement Concrete with Partial Replacement of Cement Using Marble Dust Powder

2020 ◽  
Vol 5 (6) ◽  
Author(s):  
Senthamilselvi P ◽  
Amrish A ◽  
K.S. Aravind ◽  
Elansezhiyan S ◽  
Jeyashri A
Keyword(s):  
Experimental Study ◽  
Portland Cement ◽  
Ordinary Portland Cement ◽  
Environmental Issues ◽  
Partial Replacement ◽  
Cement Concrete ◽  
Concrete Production ◽  
Marble Dust ◽  
Hardened Properties ◽  
Production Industry

The waste generated from the industries motive environmental issues. For this reason the reuse of these wastes are often emphasised.Thus Marble dust powder (MDP) is one of the fast growing waste material which can be used in the concrete production industry to minimize material use and produce financial advantage. In this study, the marble dust powder passing through 90 micron sieve, has been utilized for determining the hardened properties of concrete .The hardened properties of concrete has been determined with the effect of different rate replacement of cement by MDP.In this examination work, MDP has replaced the Ordinary Portland Cement (OPC) at an increasing rate from 0 % to 20% by weight in M30 grade concrete. The motivation behind this investigation is to examine the behavior of concrete with the substitution of cement by MDP in various extents in concrete.

Sign in / Sign up

Export Citation Format

Share Document