Subsequently, the effect on the characteristics of recycled concretes made with a water/cement ratio of 0.50, when part of the recycled aggregate was replaced with recycled sand, was studied. The results obtained on mortars indicate that the use of up to 20% recycled sand caused a drop in the compressive and flexural strength.

Natural sands vary in composition and may cause different concrete strength. •. We highlight some mechanical aspects regarding the use of sand from different origins. •. Sands containing smectite-type clays cause lower concrete strength. •. Na 2 O content of sands is important for predicting the strength of concrete.

Effects of polymer and bentonite support fluids on concrete–sand . 2 Dec 2017 Effects of polymer and bentonite support fluids on concrete–sand interface shear strength filter cake at the interface so that only aggregate protruding through the filter cake made contact with the sand It was found that the full concrete–sand shearing resistance could be mobilised when the

purities present in building sand and its effect on compressive strength of concrete. This paper presents the findings on the quality of building sand as sourced from eight supply points in Nairo-bi County and its environs and the effects of these sand impurities to the compressive strength of

Concrete Mixtures. Fifteen concrete mixes were prepared and classified into three groups based on the following designed compressive strength (( f_{cd} )): L-group for ( f_{cd} ) of 18 MPa, M-group for ( f_{cd} ) of 24 MPa, and H-group for ( f_{cd} ) of 35 MPa.In each group, lightweight fine aggregates were replaced by using the natural sand from 0 to at an …

Effect of Use of Silica Sand as Fine Material in Concrete. Sand size of 30 mesh to 80 mesh (500 micron) is used in the glass industries. Sand size 1.18mm to 600 micron can be used in making concrete mix as the partial replacement of fine aggregate. Nearly about 200 tones of silica sand is obtained daily after washing the raw material.

Effect of the Type of Sand on the Properties of Concrete. January 2021; DOI:10.36478/jeasci.2021.111.113

Effect Of Filter Sand On Concrete. Effect Of Filter Sand On Concrete. Effect of Different Coarse Aggregate Sizes on the Strength Characteristics of Laterized Concrete . M A Salau1,2 1and A O Busari the use of laterite to replace river sand partially or fully in the concrete. Effect of use of Silica Sand as Fine Material in Concrete

Sands of natural origin have a variety of mineralogical compositions and chemical characteristics. The article [9] is devoted to the study of the effect of sand composition on concrete strength ...

content also has adverse effect of the strength of concrete due to poor adhesion. Researchers have therefore develop various models for predicting the effect of sand fines and W/C on the strength of concrete. However, there is a gap in literature for the combined effect of sand fines and water/cement ratio's effect on the properties of concrete.

Request PDF | The Effect of Manufactured Sand in Concrete | Concrete is the most popular building material worldwide. Concrete is produced with conventional building materials like cement, sand ...

Concrete Mixtures. Fifteen concrete mixes were prepared and classified into three groups based on the following designed compressive strength (( f_{cd} )): L-group for ( f_{cd} ) of 18 MPa, M-group for ( f_{cd} ) of 24 MPa, …