Volumetric Replacement Research Articles

An Experimental Study on Behavior of Sustainable Rubberized Concrete Mixes

In terms of recycling and reuse, today's global generation of waste tire well exceeds its consumption. This has resulted in the accumulation of large stocks of toxic rubber waste that raise health and safety risks. The use of waste tire rubber for the construction of the concrete structure was suggested to combat this challenge. This paper explores tests that were performed with samples of waste tire rubber concrete to evaluate compressive strength, flexural tensile strength, modulus of rupture, and impacts resistance. The main parameters investigated were the rubber ratio as a partial volumetric replacement with fine and coarse aggregate. Chip and crumb rubbers were used to replace coarse and fine aggregate respectively in four different amounts by volume (5%, 10%, 15%, and 20%). Even if the inclusion of waste tire rubber in concrete has specific apparent degradations, the potential benefit seems to overlook the adverse effects and also meet the primary significant value of resolution for rubber waste utilization problems. The results show that the substitution of natural fine or coarse aggregates with crump-chip tier rubber will reduce mechanical properties (compressive, flexural and splitting tensile strength), but increase the impacts resistance to 426% and 396% when 20% coarse aggregates and 20% fine aggregates are replaced by rubber respectively. The proposed mix shows an ability to replace 20% of the aggregate (coarse or fine), and the producing, rubcrete, still structural concrete.

Enhancement of bio-methane production yield from rumen digesta with biodegradable kitchen wastes by co-digestion process

The study was investigated to enhance biogas production from rumen digesta by anaerobic co-digestion process. The experiment was carried out in 3300 mL digester. The mixing ratio of rumen digesta and water used was 1:1 in 40 days Hydraulic Retention Time (HRT). Produced gas was measured by volumetric water replacement method. In phase-1, the maximum biogas generation from digesta of chicken and goat, cow and chicken, cow and goat, and co-digestion of four substrates (C:CH:G:V) were 65, 1230, 37 and 375 mL/d at 17th, 14th, 26th and 13th day respectively. The average biogas production was found from these samples were 20, 340, 16 and 113 mL. In phase-2, the maximum biogas generation from cow, goat and chicken, cow, chicken and vegetable waste and cow, goat and vegetable waste were respectively 66, 80 and 64 ml/d at 19th, 23rd and 27th day. The average biogas generation were found from these samples 22, 32 and 19 mL. The comparative data shows, biogas production is higher with cow and chicken wastes in both the phases mixed with vegetable waste. Thus, it is suggested that the study which gave maximum yield of biogas production from co-digestion process might be met the future energy demand. Â

Recycled aggregate concrete slab punching shear capacity

Punching shear strength of balanced slab-column connections made of two grades of Recycled Aggregate Concrete (RAC) with each grade containing selected volumetric replacement levels (0%, 50% and 100%) of recycled concrete aggregates derived from laboratory waste concrete are reported. Displacement-controlled loading tests show ultimate punching capacities to be practically insensitive to recycled aggregate replacement level though measured capacities increased with concrete grade. A Strut-and-Tie Model (STM) adapted from the literature for rational estimation of RAC punching capacities gave conservative and reasonably accurate prediction of results of this and other investigations reported in the literature whereas overly conservative predictions were obtained from selected current design codes.

Some properties of green concrete with glass and plastic wastes

This study focusses on the flexural strength, flexural toughness, thermal conductivity, and failure modes under flexural for concrete containing 15% glass powder waste as partial replacement of cement by weight and 25, 50, 75, 100% plastic waste as volumetric replacement of natural coarse aggregate at 60 days.The results show an increase in flexural strength and thermal conductivity when 15% glass powder waste was used, while there is a significant decrease with the use of plastic waste relative to reference specimens (without wastes). It can be observed a significant increase in total flexural energy when the content of plastic waste coarse aggregate is increased.The incorporation of plastic waste aggregate in concrete with 15% glass powder changes the failure behavior of concrete specimens from a brittle to a more ductile failure. The failure in reference concrete specimens without coarse plastic waste aggregate occurs in matrix, through coarse aggregate, and around the aggregates in interfacial transition zone (ITZ). On the other hand, in concrete containing HDPE (high density polyethylene) plastic waste aggregate with 15% glass powder, the failure occurs mainly around plastic particles.

Effect of recycled concrete coarse aggregates on service-load deflections of reinforced concrete columns

This paper describes a numerical parametric investigation for the effects of coarse recycled concrete aggregates (RCA) on the time-dependent vertical deflections of reinforced concrete columns under sustained service loads. The deflections were analyzed for interior (concentric) and exterior (eccentric) column loading conditions, with different volumetric replacement of the coarse aggregate, R, concrete strength, column width, column depth, column length, longitudinal reinforcement area, ultimate shrinkage strain, ultimate creep coefficient, and ambient relative humidity. In addition, the quality of RCA was quantified and varied through the water absorption, Arca (viewed as a measure of aggregate porosity), and deleterious material content, Drca (e.g., wood, asphalt). The results show that increased R resulted in larger deflections, and increased Arca and Drca resulted in larger deflections for the same R. High quality RCA with low Arca and Drca resulted in deflections that were not much greater than those for natural aggregate (NA) concrete columns. The increase in deflection due to RCA was larger for columns with larger concrete strength and cross-section dimensions and smaller longitudinal steel ratios, and larger for interior columns than exterior columns with flexural cracking. RCA was also found to have larger effect on the initial column deflections than the time-dependent deflections.

Comparison Mechanical Properties of Two Types of Light Weight Aggregate Concrete

This paper presents the behavior of concrete properties by replacing the conventional coarse aggregate used in the concrete mixture by two types of lightweight aggregate; Expanded Perlite Aggregate (EPA) and Volcanic Pumice (VP). To fulfill this aim; three laboratory tests were applied; density, compressive strength, and abrasion resistance, that conducted to extrapolate the range of the changes in the properties of concrete with existence those types of aggregate in the mixture. Also, the volumetric proportion adopted as a strategy for replacing the coarse aggregate by EPA or VP in the concrete mixture. Then, the volumetric proportion ranged from 10% to 50% with the variation step was 10%. Therefore, ten concrete mixtures are prepared and divided into two groups; each group contains five concrete mixes to represent the volumetric replacement (10-50)% of conventional coarse aggregate by EPA or VP. On the other hand, one extra mixture designed by using conventional aggregate (coarse and fine aggregate) without any inclusion of EPA or VP to be considered as a reference mixture. The obtained laboratory results of this study proved that the density, compressive strength, and abrasion resistance readings of concrete decreased at any volumetric proportion replacement of coarse aggregate by EPA or VP. The decrease in density and compressive strength of concrete readings amounted the peak level at 50% replacing of coarse aggregate by EPA, which were 38.19% and 77.37%, respectively than the reference mixture. Additionally, the compressive strength is an important factor affecting the abrasion resistance of concrete mixture, and loss of abrasion decreased as compressive strength increased.

Dynamic modulus of elasticity of geopolymer lightweight aggregate concrete

The production processes of ordinary Portland cement (OPC), accompanying with bad environment influences such as, huge energy consumption, greenhouse gases emissions and natural resource exploitation; but fly ash-based geopolymer concrete is produced without (OPC), yet that has many sustainable environment benefits. In this study locally artificial lightweight aggregate was used to produce lightweight fly ash geopolymer concrete. The dynamic modulus of elasticity for geopolymer lightweight concrete produced by using locally artificial aggregate was investigated. Reference lightweight geopolymer concrete containing natural normal weight fine aggregate without fiber, lightweight geopolymer concrete reinforced with two volume fractions of steel fibers (0.25 and 0.5); in addition to four concrete mixtures containing artificial coarse lightweight aggregate and artificial lightweight fine aggregate with 25, 50, 75 and 100% volumetric replacement to natural normal weight fine aggregate (sand) were prepared. The dynamic modulus of elasticity was tested at 28day age for all specimens using resonance frequency method. The results demonstrate that the incorporation of artificial fine lightweight aggregate as a volumetric replacement to natural fine aggregate in concrete geopolymer lightweight concrete reduces the dynamic modulus of elasticity gradually with the increase of artificial lightweight aggregate content.

Energy Absorption Capacity Of Layered Lightweight Reinforced Concrete Beams With Openings In Web

This research presents the flexural behavior on reinforced concrete beam with transverse web opening constructed from layered concrete. The layered concrete combining normal concrete and lightweight aggregate concrete (LWC) are depended in present study. In the experimental program, 13 models of normal and layered reinforced concrete beams are tested under the effect of four-point loads. All beams had the same overall geometrical dimensions and main longitudinal top and bottom with internal diagonal reinforcement provided around the openings. One of the beam specimen is tested as control beam and the other specimens are divided into three groups [G1, G2, and G3] to study the effects of the following variables: effect of presence of web openings, layered system, lightweight aggregate (partially volumetric replacement of normal aggregate by thermostone) on the ultimate load, cracking load, cracking pattern and energy absorption capacity. The existing of an opening in beam specimens reduced the flexural capacity of beams with a percentage depending on the size of opening and opening number. The test data obtained from the adopted layered technique of (NEW) and (LWC) have shown that for beams constructed from two layered concrete (LWC with thermostone in the web and bottom flange of I-beam section) ultimate load is decreased about (9.3%-48.8%). It has also, the beams constructed from three-layered of concrete (LWC with thermostone in the web of I-beam section), their ultimate load is decreased about (25.6%-58.1%). On the other hand, magnitude increased of energy absorption capacity are achieved by the decreased opening size, introducing the full size opening of dimension (100×1000) mm reduces the energy absorption capacity of the RC I-section beams at least 80% compared to solid beam while the beam with opening size (100×100) mm decrease up to 16%. In the case of the layered concrete beams specimen, the real influence of lightweight concrete (LWC) type in the layered reinforced concrete is observed significantly after increasing the length of opening more than 100 mm.

Freeze-thaw resistance of steel fibre reinforced rubberised concrete

This study evaluates the freeze-thaw performance of steel fibre reinforced rubberised concretes (SFRRuC) engineered for flexible concrete pavements. The effect of large volumes of fine and coarse rubber particles (i.e. 30% and 60% volumetric replacement of natural aggregates) is determined for concretes reinforced with 40 kg/m3 of a blend of manufactured steel fibres and recycled tyre steel fibres. The freeze-thaw performance is assessed through surface scaling, internal damage, residual compressive strength and flexural behaviour. The results show that SFRRuC are able to withstand 56 freeze-thaw cycles with acceptable scaling and without presenting internal damage or degradation in mechanical performance. This indicates that SFRRuC can perform well under extreme freeze-thaw conditions and can be used to construct long-lasting flexible pavements as a sustainable alternative to asphalt concretes.

Comparative Study of Transvaginal Sonography and Hysteroscopy for Detection of Pathological Endometrial Lesions in Women with Perimenopausal Bleeding

Background:abnormal uterine bleeding is a frequent condition in gynecology. It may impact physical, emotional sexual and professional aspects of the lives of women, impairing their quality of life. In cases of acute and severe bleeding, women may need urgent treatment with volumetric replacement and prescription of haemostatic substances. In some specific cases with more intense and prolonged bleeding surgical treatment may be necessary. Aim of the Work: this study aimed to estimate the diagnostic accuracy of two dimensional transvaginal ultrasound and hysteroscopy compared to the histopathology in evaluation of uterine cavity lesions in peri menopausal women with abnormal uterine bleeding. Patients and Methods: this was a prospective cohort study and it included 50 patients from Obstetrics and Gynecology Outpatient Clinic at Al-Hussein and Bab El-Shearia (Sayed Galal) Hospitals, Al-Azhar University during the period from October 2017 to May 2018. Results: 2D TVS were more sensitive and a little more accurate than hysteroscopy in detecting endometrial hyperplasia, while hysteroscopy showed higher specificity. Hysteroscopy showed highest accuracy for diagnosis of the endometrial polyp and was more sensitive, specific and accurate than 2D TVS in this diagnosis. 2D TVS were more sensitive and accurate than hysteroscopy in the diagnosis of adenomyosis, but both showed same specificity. For differentiating normal from abnormal endometrial cavity both 2D TVS and hysteroscopy showed high accuracy, but U/S was more sensitive and a little more accurate than hysteroscopy, while the last was more specific. Both 2D TVS and hysteroscopy ignore the diagnoses of one lesion when endometrial hyperplasia, endometrial polyp or adenomyosis were found in one case. Conclusion: endometrial hyperplasia was the commonest observed endometrial abnormality in our patient sample and the second most common pathology was the endometrial polyp.

Some properties of sustainable concrete containing two environmental wastes

This investigation includes the use of 15% of glass wastes as a partial substitution to cement in combination with plastic wastes as volumetric replacement to natural coarse aggregate to produce sustainable concrete. Different volumetric replacements of plastic waste to natural coarse aggregate (25%, 50%, 75%, and 100%) were used in concrete containing 15% glass powder as a replacement by weight of cement. Generally, the results show that the inclusion of 15% glass powder improves the compressive strength, splitting tensile strength and flexural strength by about 13.3%, 36.3%, and 34.7%respectively at 60 day age in comparison with reference concrete without wastes, also the results show a decrease in water absorption and an increase in dry density. The inclusion of plastic waste aggregate in the presence of 15% glass powder leads to a decrease in the compressive strength, flexural strength, splitting tensile strength, dry density, ultrasonic pulse velocity, and thermal conductivity. The percentage reductions are 59.8%, 46.3%, 43.6%, 20.5%, 28.6%, and 54.4% respectively for concrete specimens that including 100% plastic waste coarse aggregate in comparison with concrete specimens without plastic waste aggregate.

Rheological behaviour of different grades of self-compacting concrete containing recycled aggregates

Rheological behaviour of three grades of Self-Compacting Concrete (SCC) containing selected volumetric replacement levels of coarse recycled concrete aggregates (SCRCA) is reported. The binder in the control SCC was cement. Fly ash and silica fume were added to the control mix in binary and ternary blends to achieve the normal-, the medium- and the high-strength SCRCAs. Like the SCC made with the natural aggregates, the normal-strength SCRCA showed a shear thickening response. Its flow behaviour could be described using the Modified Bingham (MB) as well as the Herschel-Bulkley (HB) model. Although rheology of the medium- and the high-strength SCRCAs could be represented by the Bingham model, a more detailed analysis of their flow data using the MB and the HB model indicated shear thinning behaviour. This response is attributed to the presence of silica fume in these two concrete grades. The results of this investigation have implications for formwork pressure, multi-lift casting, pumping and segregation resistance of SCRCA.

Microwave and conventional treatment of low-cement high-alumina castables with different water to cement ratios; Part I. Drying

The aim of this study was to determine the effect of the microwave and conventional drying method on the strength, porosity and composition of low-cement alumina castables with various water to cement ratios (wcr). High-alumina low-cement castable samples were prepared with different w/c ratios: 0.64, 0.75, 0.82 and 1.13. Changes in wcr were effected through volumetric replacement of cement with 0–0,045-mm tabular alumina having a comparable particle size. Water content in all the composition was constant (4,5%). After curing, the samples were dried conventionally in a laboratory electric drier or in a laboratory microwave drier. After drying open porosity and modulus of rupture were determined. The pore size distribution, pore median and tortuosity of the samples were measured by the mercury porosimetry method. Phase composition was determined using X-ray diffraction. The Rietveld method was used for quantitative analysis. It was found that at low wcr (0.62) the main hydrate formed in the castable was C3AH6, which caused a release of a smaller amount of water during the drying process, mainly pore water, resulting in lower open porosity and lower pore size than in the castables with a high wcr (1.13). At a low wcr, the strenght of castable was higher due to a higher amount of hydrates, low porosity and small pore size. On the other hand, at a high wcr, the strength of castable was lower owing to a higher amount of water released in the drying process, which led to loosening the structure of castable. With an increased water-to-cement ratio the degree of CA2 hydration decreased. The temperature rise due to cement hydration probably influenced the kinetics of this process.

Abnormal Uterine Bleeding.

Abnormal uterine bleeding is a frequent condition in Gynecology. It may impact physical, emotional sexual and professional aspects of the lives of women, impairing their quality of life. In cases of acute and severe bleeding, women may need urgent treatment with volumetric replacement and prescription of hemostatic substances. In some specific cases with more intense and prolonged bleeding, surgical treatment may be necessary. The objective of this chapter is to describe the main evidence on the treatment of women with abnormal uterine bleeding, both acute and chronic. Didactically, the treatment options were based on the current International Federation of Gynecology and Obstetrics (FIGO) classification system (PALM-COEIN). The etiologies of PALM-COEIN are: uterine Polyp (P), Adenomyosis (A), Leiomyoma (L), precursor and Malignant lesions of the uterine body (M), Coagulopathies (C), Ovulatory dysfunction (O), Endometrial dysfunction (E), Iatrogenic (I), and Not yet classified (N). The articles were selected according to the recommendation grades of the PubMed, Cochrane and Embase databases, and those in which the main objective was the reduction of uterine menstrual bleeding were included. Only studies written in English were included. All editorial or complete papers that were not consistent with abnormal uterine bleeding, or studies in animal models, were excluded. The main objective of the treatment is the reduction of menstrual flow and morbidity and the improvement of quality of life. It is important to emphasize that the treatment in the acute phase aims to hemodynamically stabilize the patient and stop excessive bleeding, while the treatment in the chronic phase is based on correcting menstrual dysfunction according to its etiology and clinical manifestations. The treatment may be surgical or pharmacological, and the latter is based mainly on hormonal therapy, anti-inflammatory drugs and antifibrinolytics.

Fracture energy and mechanical characteristics of self-compacting concretes including waste bladder tyre

Management of solid wastes is one of the most important environmental problems in the world. Waste tyres are also one of these solid wastes. The growing number of waste tyres that are stocked every year brings problems in respect of human health, environmental pollution, and also causes esthetical problems. The main purpose of this study is to investigate the effect of waste tyre addition on self-compacting concretes’ mechanical characteristics and fracture properties under bending. In this study, waste bladder tyres (RA) mechanically cut in 25, 50 and 75mm lengths were used by volumetric replacement of coarse aggregates in self-compacting concretes (SCC). Unit weight, flow, J-ring, column segregation, water absorption, 28days of compressive strength, ultrasound pulse velocity and fracture energy tests were applied on concretes obtained by replacement of coarse aggregates in 5%, 10% and 15% ratios by volume. Also, Scanning Electronic Microscope (SEM) and Energy Distribution Spectroscopy (EDS) analyses of the samples were examined. In the study, it was determined that RA replacement decreases unit weight of fresh concrete; when RA length ratio increases, it becomes difficult for the concrete to pass through reinforcement openings; in hardened concrete samples dry unit weight decreases; 10% fibre addition increases compressive strength values; after the ultrasonic pulse velocity measurement, the concretes are included in “good” quality concrete classifications. As a conclusion, it was determined that 25mm long 10% rubber aggregate replacement to self-compacting concretes can give optimum results.

Influence of Rice Husk Ash Density on the Workability and Strength of Structural Concrete

Supplementary cementitious materials (SCMs) have been known to improve the properties of fresh and hardened concrete, and at the same time enhance the sustainability of concrete. Rice husk Ash (RHA), is one such material, but has neither been widely studied nor applied in practice. This work investigated the effect of the density of RHA on the workability and compressive strength of fresh and hardened RHA-replaced concrete respectively. Cement was replaced with RHA in concrete by weight (RHA-W) and by volume (RHA-V) at steps of 0%, 5%, 7.5%, 10%, 15%, 20%, 25% and 30%. The 0% replacement was used as the reference point from which performances were measured. Results showed that unlike the characteristic of other established pozzolans, RHA significantly reduced the workability of wet concrete and the rate of compressive strength gain over curing time due to a high water demand that is caused by the increased volume of replaced concrete, which results from its low density. Workability reduced with increased replacement for both RHA-W and RHA-V. Replacements of above 15% were not possible for the RHA-W due to the high water demand. However, replacements of up to 30% were achieved for the RHA-V. RHA-W specimens achieved lower compressive strengths and were observed to gain strength at a lower rate over the 28 to 91-days period of curing compared to RHA-V specimens. This behavior was attributed to the shortage of water that is necessary for the hydration of cement and subsequent pozzolanic reaction, which is the basis of the contribution that is made to the strength and performance of concrete by SCMs. However, the compressive strengths achieved were above the study’s target concrete strength of class C32/40 at 91 days, which is among those classes that are listed as being durable and suitable for structural applications. A conclusion that RHA should supplement cements by volumetric replacement rather than simple substitution by weight was drawn.

Influence of Rice Husk Ash Density on the Workability and Strength of Structural Concrete

Supplementary cementitious materials (SCMs) have been known to improve the properties of fresh and hardened concrete, and at the same time enhance the sustainability of concrete. Rice husk Ash (RHA), is one such material, but has neither been widely studied nor applied in practice. This work investigated the effect of the density of RHA on the workability and compressive strength of fresh and hardened RHA-replaced concrete respectively. Cement was replaced with RHA in concrete by weight (RHA-W) and by volume (RHA-V) at steps of 0%, 5%, 7.5%, 10%, 15%, 20%, 25% and 30%. The 0% replacement was used as the reference point from which performances were measured. Results showed that unlike the characteristic of other established pozzolans, RHA significantly reduced the workability of wet concrete and the rate of compressive strength gain over curing time due to a high water demand that is caused by the increased volume of replaced concrete, which results from its low density. Workability reduced with increased replacement for both RHA-W and RHA-V. Replacements of above 15% were not possible for the RHA-W due to the high water demand. However, replacements of up to 30% were achieved for the RHA-V. RHA-W specimens achieved lower compressive strengths and were observed to gain strength at a lower rate over the 28 to 91-days period of curing compared to RHA-V specimens. This behavior was attributed to the shortage of water that is necessary for the hydration of cement and subsequent pozzolanic reaction, which is the basis of the contribution that is made to the strength and performance of concrete by SCMs. However, the compressive strengths achieved were above the study’s target concrete strength of class C32/40 at 91 days, which is among those classes that are listed as being durable and suitable for structural applications. A conclusion that RHA should supplement cements by volumetric replacement rather than simple substitution by weight was drawn.

Eco-Friendly Concrete Containing PET Plastic Waste Aggregate

The experimental program in this investigation focused on studying the properties of concrete containing different percentages of Plastic Wastes Polyethylene Terephthalate (PET) plastic waste as a volumetric replacement to natural coarse aggregate. Different percentages (10%, 20%, 30%, 40%, and 50%) of PET shredded plastic waste from waste PET bottles as a volumetric replacement to natural coarse aggregate and 10% silica fume as a replacement by weight of cement content were used. The properties of these concrete mixes including, workability, dry density, compressive strength, total flexural energy, impact resistance, thermal conductivity at 28 days age and drying shrinkage at 90 days age were studies. The use of plastic waste aggregate in concrete presents various advantages; one of these advantages is that plastic aggregates result in producing lightweight concrete depending on the percentage of plastic waste used. The dry density of concrete containing higher percentage of PET plastic waste of 40% and 50% as a volumetric replacement to natural coarse aggregate, was 1910 and 1850 kg/m3 respectively. Also thermal insulating properties of concrete containing plastic waste aggregate were improved.

Effect of Using Porcelanite as Partial Replacement of Fine Aggregate on Roller Compacted Concrete with Different Curing Methods

Roller-Compacted Concrete is a no-slump concrete, with no reinforcing steel, no forms, no finishing and wet enough to support compaction by vibratory rollers. Due to the effect of curing on properties and durability of concrete, the main purpose of this research is to study the effect of various curing methods (air curing, 7 days water curing, and permanent water curing) and porcelanite (local material used as an Internal Curing agent) with different replacement percentages of fine aggregate (volumetric replacement) on some properties of Roller-Compacted Concrete and to explore the possibility of introducing practical Roller-Compacted Concrete for road pavement with minimum requirement of curing. Specimens were sawed from slabs of (380*380*100) mm for determination of Ultrasonic Pulse Velocity (UPV) and Voids volume. Results show that using (5) % porcelanite improved the results of UPV and Voids volume of Roller-Compacted Concrete (with air curing) as compared with reference Roller-Compacted Concrete (with permanent water curing) by percentages ranging from(3.6 to 28.9)% and (-8 to -15.5)% respectively.
 

Mechanical performance of bedding mortars made with olive biomass bottom ash

Two waste streams result from biomass combustion for power generation: biomass fly ash (BFA), which is used as fertilizer in agriculture, and biomass bottom ash (BBA) currently with no practical applications and generally deposited in landfills.This study provides significant information about the mechanical behaviour of mortars made with BBA, and the influence of several variables on such behaviour, namely type of cement, cement content, BBA incorporation ratio, and material type replaced with BBA.Two mortar families were produced according to the type of cement applied (CEM-I and CEM-II). In each family, three volumetric replacement ratios of natural sand (NS) with BBA (0%, 10% and 20%) and three cement contents (515g/L, 485g/L and 450g/L) were used. Mortars with replacement of cement with BBA (10% and 20% in cement volume) were also produced.Four mechanical properties were analysed: porosity, density, flexural strength and compressive strength. Strength was analysed at different ages to assess its evolution over time.There was a declining trend with the application of BBA for all properties analysed. Different behaviours were observed depending on the type of cement used or the material type replaced with BBA. Furthermore, there is an influence of porosity and density on strength due to the high absorption of BBA, allowing establishing meaningful relationships between the properties analysed.This paper proves the viability of bedding mortars with BBA depending on the cement type and content and the BBA incorporation ratio.