Laboratory Grinding Research Articles

Comparison of milling methods on the properties of common buckwheat flour and the quality of wantuan, a traditional Chinese buckwheat food.

The microstructural and techno-functional properties of buckwheat flour and its processability for making wantuan, as affected by different milling methods, were investigated. Results showed that the particle sizes (d(0.5)) of the flours made by stone-milling (SM), hammer-milling (HM), laboratory grinding with steaming pretreatment for 5min (LG-5) and 10min (LG-10) were 95.5, 111.5, 35.4 and 41.1μm, respectively. Moreover, SM and HM flours had less liberated starch granules and 20.84%-24.32% higher relative crystallinity than LG-10 flour. Slurries of laboratory-grinded flours showed excellent suspension stability. LG-10 flour had lowest pasting viscosities but greatest storage modulus and loss modulus. Color differences among the wantuan made from different flours were not visibly perceived (ΔE<5). Wantuan made from LG-5 flour exhibited highest textual quality due to its greatest resilience (0.376), good springiness (0.933) and accepted chewiness (1093.31). Concluding, steaming prior to grinding could improve the qualities of buckwheat flour for wantuan making.

Amount of damaged starch in laboratory and production grinding flour

Due to the different approach to the Russian and European flour milling process in Russia, the amount of damaged starch (SC) at flour mills is rarely controlled. This issue needs a comprehensive study, since the indicator of damaged starch is of great importance: its assessment allows determining the intended purpose of flour (bread baking, confectionery and pasta production). Manage the flour-grinding process in terms of monitoring the operation of the mill rolls during grinding, namely, checking their parallelism and wear, optimizing the gap and pressure. Flour with a high content of damaged starch should not be used for the same purpose as flour with a low content of damaged starch. Also, the assessment of the damaged starch index allows improving the dough yield by selecting the optimal water absorption coefficient (water absorption), optimizing the volume, color and shelf life of the finished flour products. At the initial stage, the purpose of the study was to identify the relationship between the amount of damaged starch and flour quality indicators, as well as the rheological properties of dough from laboratory flour and industrial grinding, and to further clarify the level of damaged starch on a large number of samples of flour of different quality according to its intended purpose. The available literature data on this issue are contradictory. The amount of damaged starch in flour was determined on a damaged starch analyzer. The following were also determined: the quantity and quality of gluten, the falling number, dough stability, liquefaction, water absorption of 20 samples of wheat flour of laboratory and industrial grinding. The results of the study showed that the amount of damaged starch in industrial milled flour was higher, and amounted to 20-27 UCD (average 24 UCD) versus 15-21 (average 18 UCD) in laboratory milled flour. A correlation was found only in industrial milling flour between damaged starch and the falling number (0.632), liquefaction (0.781) and water absorption (0.690). In industrial flour, with an increase in the amount of damaged starch, there was an increase in water absorption and liquefaction of the dough, which is consistent with the literature data; there was no clear decrease in dough stability. In the flour of laboratory grinding, the dependences between the indicators are insignificant.

Influence of wheat and amaranth grain mixture ratio on chemical and physicochemical parameters of wheat-amaranth flour

A new source of vegetable raw materials for the food industry has appeared on the Russian market - amaranth grain and products of its processing, which have a valuable chemical composition, high nutritional and biological value, containing a wide range of physiologically functional nutrients. The studies on the effect of different ratios of the grinding mixture of wheat and amaranth grains on the chemical and physico-chemical properties of wheat-amaranth flour as a result of their joint processing are presented. The object of the study was the grain of winter wheat of the variety Nemchinovskaya 85 and the grain of amaranth of the variety Voronezhsky. Processing of the control sample of common wheat and milling wheat-amaranth mixtures of various ratios was carried out in the laboratory grinding mills (LGM-4) with threaded (for break systems) and smooth microroughened rollers (for grinding systems). It has been found that in the control sample of wheat flour, the weighted average content of fat and protein was 1.12% and 11.57%, respectively, with the addition of 5% amaranth to the grinding wheat-amaranth grain mixture, the weighted average fat content in wheat-amaranth flour was 2.47 %, and the protein content - 12.55%, with the addition of 10% amaranth to the grinding wheat-amaranth grain mixture, the weighted average fat content of wheat-amaranth flour was 3.13%, and the protein content - 12.66%, with the addition of 15% amaranth in the milled wheat-amaranth grain mixture, the weighted average fat content in wheat-amaranth flour was 3.88%, and the protein content was 13.34%, with the addition of 20% amaranth to the milled wheat-amaranth grain mixture, the weighted average fat content in wheat-amaranth flour was 4.29%, and the protein content was 13.78%, respectively. It has been found that the addition of amaranth grain to the milled wheat-amaranth mixture up to 20% of amaranth grain significantly increases the yield of wheat-amaranth flour. It has been established that the addition of amaranth grain to the grinding grain mixture makes it possible to increase the fat content in wheat-amaranth flour by 282.1% and the protein content by 18.4% compared to the control wheat flour.

Grain Millgrist Ratio Influence on the Grain-Forming Ability and Triticale-Rye Flour Yield

The research revealed the study results of the influence of the different millgrist ratios of triticale grain and rye on the triticale-rye intermediate grinding products and triticale-rye flour yield. A man grinds the initial samples of triticale grains on laboratory grinding mills (MLP-4) with threaded (for break systems) and microroughened rolls (for reduction systems). The mechanical and kinematic parameters of the MLP-4 mill threaded rolls are as follows: the flute layout is back to back, the fast-rotating roll speed is 5 m/s, the differential unit is 1.5, the number of flutes per 1 cm is 8, the flutes slope is 7 %. A man revealed that among the presented samples the control triticale grain demonstrated the highest intermediate ground materials yield, which amounted to 87.9 %, including 14.2 % of triticale flour; while the control rye grain – the smallest intermediate ground materials yield, accounted for 81.9 %, including 22.4 % rye flour. The study showed that when 50 % of rye grain was added to the triticale-rye grain millgrist, the intermediate ground materials yield in the cereal dusting products form was 83.1 %, including 19.1% of triticale-rye flour; when 40 % of rye grain was added to the triticale-rye grain millgrist, the intermediate ground materials yield in the сereal dusting products form was 85.0 %, including 17.3 % of triticale-rye flour; when 30 % of rye grain was added to the triticale-rye grain millgrist, the intermediate ground materials yield in the сereal dusting products form amounted to 87.9 %, including 14.2 % of triticale-rye flour. A man found that when grinding the initial control triticale grain, the triticale flour yield was 77.9 %, when grinding the initial control rye grain, the triticale flour yield flour was 70.3 %, which is 6.9 % less than from triticale grain. When introducing 50 % of rye grain to the triticale-rye grain millgrist, the triticale-rye flour yield was 72.9 %; when introducing 40 % of rye grain to the triticale-rye grain millgrist, the triticale-rye flour yield was 72.9 %, when introducing 30 % of rye grain to the triticale-rye grain millgrist, the triticale-rye flour yield was 77.1 %. The authors connected the dots between the triticale-rye flour yield and the rye grains content in the millgrist. At the same time, they found that the rye grain introduction to the triticale-rye millgrist led to a decrease in the triticale-rye flour yield.

A prediction of blend grinding result based on individual ore size measurements and grinding tests

Dry ball mills of Tata Steel IJmuiden’s pelletizing plant grind a blend of iron ores, coke breeze and mineral additives. Blend composition can be adjusted depending on raw material supply and product demand. A grinding prediction method on blends has been developed in order to aid improvement of blend selection. A batch testing procedure on individual ores was applied. Parameters describing grinding kinetics were determined by using simulation and fitting to the results of the tests. The grinding of certain ore mixtures was simulated using the obtained parameters of the individual ores. The calculated particle size distributions were compared to laboratory grinding results of the mixtures. Grinding parameters of each ore were subsequently summarised in a single parameter, being the time required in a laboratory mill to achieve a specified target average particle diameter. The incorporation of the grinding time into linear models improved the prediction of product quality from the industrial grinding system. Results and mean average error of this prediction were determined by means of cross validation.

Effect of Particle Size on Compost Analysis by Portable X-ray Fluorescence

Portable X-ray fluorescence (pXRF) could be more widely used for analyzing organic amendments, because it allows for a fast and low-cost analysis and is easy to use, among other operational advantages. However, the heterogeneity of these materials causes deviations in the measurements made. In the present study, three composts different in their origin (municipal solid waste (MSW), sewage sludge, and alperujo (i.e., olive oil manufacturing) waste) and composition were used. The effect that the laboratory grinding process had on the results of their elemental analysis conducted with pXRF was studied, as well as the elemental composition of the compost granulometric fractions. The grinding process of the fractions larger than 0.5 mm caused higher concentration readings for the elements Si (up to 47%), Ti (up to 30%), Al (up to 27%), K (up to 26%), P (up to 24%), V (up to 18%), and Pb (up to 16%) and lower readings for Zn (up to −41%) and Cu (−64%) in the ground samples. The differences depended on the type of compost. However, in the complete compost samples, the grinding caused lower reductions: −34% in the Cu concentration of the MSW compost, −20% in the Zn concentrations of the MSW compost and the alperujo compost, and a 15.2% increase in the P concentration of the MSW compost. For most of the elements, grinding did not cause significant differences. Since several of the elements that presented wide variations are essential for the characterization of compost, it is recommended that in order to carry out measurements with this technique, a sample preparation process is carried out that guarantees its homogeneity.

Energy-Model and Life Cycle-Model for Grinding Processes of Limestone Products

Fine and ultrafine grinding of limestone are frequently used in the pharmaceutical, chemical, construction, food, and cosmetic industries, however, research investigations have not yet been published on the combination of energy and life cycle modeling. Therefore, the first aim of this research work was the examination of main grinding parameters of the limestone particles to determine an empiric energy-model. Dry and wet grinding experiments have been carried out with a Bond mill and a laboratory stirred ball mill. During the grinding processes, the grinding time and the filling ratio have been adjusted. The second goal of this research assessed the resources, emissions and environmental impacts of wet laboratory grinding with the help of life cycle assessment (LCA). The life cycle assessment was completed by applying the GaBi 8.0 (version: 10.5) software and the CML method. As a result of research, the determination of an empiric energy-model allowed to develop an estimated particle size distribution and a relationship between grinding fineness and specific grinding energy. The particle size distribution of ground materials can be exactly calculated by an empirical Rosin–Rammler function which represented well the function parameters on the mill characters. In accordance with LCA results, the environmental impacts for the mass of a useful product for different levels of specific energy with the building of approximation functions were determined. This research work sets up a new complex model with the help of mathematical equations between life cycle assessment and specific energy results, and so improves the energy and environmental efficiency of grinding systems. This research work facilitates the industry to make predictions for a production-scale plant using an LCA of pilot grinding processes.

Verification of Polyhedral DEM with Laboratory Grinding Mill Experiments

Verification of Polyhedral DEM with Laboratory Grinding Mill Experiments

Study of corn kernel breakage susceptibility as a function of its moisture content by using a laboratory grinding method

The rate of corn kernel breakage in the grain combine harvesters is a crucial factor affecting the quality of the grain shelled in the field. The objective of the present study was to determine the susceptibility of corn kernels to breakage based on the kernel moisture content in order to determine the moisture content that corresponds to the lowest rate of breakage. In addition, we evaluated the resistance to breakage of various corn cultivars. A total of 17 different corn cultivars were planted at two different sowing dates at the Beibuchang Experiment Station, Beijing and the Xinxiang Experiment Station (Henan Province) of the Chinese Academy of Agricultural Sciences. The corn kernel moisture content was systematically monitored and recorded over time, and the breakage rate was measured by using the grinding method. The results for all grain samples from the two experimental stations revealed that the breakage rate y is quadratic in moisture content x, y=0.0796x2−3.3929x+78.779; R2=0.2646, n=512. By fitting to the regression equation, a minimum corn kernel breakage rate of 42.62% was obtained, corresponding to a corn kernel moisture content of 21.31%. Furthermore, in the 90% confidence interval, the corn kernel moisture ranging from 19.7 to 22.3% led to the lowest kernel breakage rate, which was consistent with the corn kernel moisture content allowing the lowest breakage rate of corn kernels shelled in the field with combine grain harvesters. Using the lowest breakage rate as the critical point, the correlation between breakage rate and moisture content was significantly negative for low moisture content but positive for high moisture content. The slope and correlation coefficient of the linear regression equation indicated that high moisture content led to greater sensitivity and correlation between grain breakage and moisture content. At the Beibuchang Experiment Station, the corn cultivars resistant to breakage were Zhengdan 958 (ZD958) and Fengken 139 (FK139), and the corn cultivars non-resistant to breakage were Lianchuang 825 (LC825), Jidan 66 (JD66), Lidan 295 (LD295), and Jingnongke 728 (JNK728). At the Xinxiang Experiment Station, the corn cultivars resistant to breakage were HT1, ZD958 and FK139, and the corn cultivars non-resistant to breakage were ZY8911, DK653 and JNK728. Thus, the breakage classifications of the six corn cultivars were consistent between the two experimental stations. In conclusion, the results suggested that the high stability of the grinding method allowed it to be used to determine the corn kernel breakage rates of different corn cultivars as a function of moisture content, thus facilitating the breeding and screening of breakage-resistant corn.

Changes in Crystallite Size of Tricalcium Silicate during the Laboratory Grinding

The paper is focused on one of the most important component of Portland clinker-on the tricalcium silicate. The study reported in this article is focuses on the changes in crystallite size of synthetic tricalcium silicate obtained using solid state reaction method. Crystallite size changes are monitored during the grinding in three types of laboratory mills in two different conditions. Changing in crystallite size at various grinding time up to 120 minutes are studied with the aid of X-ray diffraction and using the Scherrer equation. It has been found that the most efficient laboratory mill in terms of speed and fineness of the material was the planetary mill.

целлюлозная масса из коры веток тутовника для бумажной отрасли

Uzbekistan is bare of forests and it takes the fifth place in the world in terms of cotton production, and the third place in terms of silk production after China and India. According to the government program the expansion of the land area for mulberry plantations boosts the growth of silk production causing an increase in the total amount of wastes, i.e. branches of mulberry trees industrially useless after the removal of leaves. Their use as a raw material for the cellulose pulp production is relevant, since it is aimed at solving not only the resource, but also the environmental problem. The bark was cut off from the mulberry branches and soaked in water for some time after which its exterior hard layer was scraped off and divided into the rough exterior layer and the softer inner layer. The inner layer was boiled for several hours. The boiled bast, after washing with water, was grinded in a laboratory grinding machine under the following conditions: mass concentration – 1 %, temperature – 22 °С. A given amount of lint cotton cellulose (grinding degree – 45 °SR) was added to the grinded bast. Paper molds with the mass of 80 g/m2 were obtained in laboratory conditions using a sheet-making apparatus. It was found out that the obtained paper that contains cotton cellulose pulp and inner layer of mulberry branch bark has low whiteness which depends on whiteness of the added fibers. It has been established that adding the cellulose pulp of the inner layer of mulberry branch bark at a grinding degree of 30 °SR contributes to the production of strong paper. It is recommended to add up to 30 % of cellulose pulp from the inner layer of mulberry branch bark to paper pulp as further addition adversely affects the paper whiteness.

The effect of pressure gradient and abrasive tool wear when polishing ceramic tiles

A series of experimental investigations were conducted to develop and describe the distribution of the pressure gradient below and across the topological surface of laboratory grinding tools on a ceramic tile during the gloss gaining process. The possibility of controlling the pressure required for the industrial polishing ceramic tiles would prevent excessive wear, directly reducing energy and water consumption. The present research aims to determine the effect of incremental surface pressure distribution in the polishing of ceramic tiles with line contact. For this purpose, two grinding devices were mounted together as a polishing head and built from the machine's base coordinate system on a CNC tribometer with a deflection angle of 2.2°. The grinding pressure was distributed gradually underneath and across the polishing tools by implementing a new polishing tool composed of rotating shaft with pivot joint, helical springs and two abrasive blocks attached on it. Due to the configuration of polishing tools with preferred process parameters, the impact of the material removal and gloss production was found to be minimized or maximized according to the chosen kinematics. Results implied that the process outcome in terms of gloss level and fine surface finish is influenced by the surface pressure (maximum at approximately more than 15 MPa) as well as the abrasive tool surface wear. Furthermore, in the manufacturing line, higher wear rate is posed by the coarser abrasives but less wear rate on the finer abrasives with high gloss gaining.

THE FINE GRINDING OF CORNCOBS TO USE AS A WATER ABSORPTION MATERIAL

Corncobs wastes are considered to be one of the most environmental problems in Egypt. Grinding corncobs is the first step to solve this problem in order to be used as raw materials in several industries. Fine grinding of corncobs using a laboratory grinding mill (FML-100) was evaluated to use ground corncobs as an absorption material. The experiments were done by studying factors affecting machine performance (feed rate, grinding time and moisture content) on Fines degree, Machine productivity, Energy consumption, Water absorption, Compressibility Index, Hausner ratio, Surface area, Size reduction ratio, Grinding effectiveness and Bulk density of ground corncobs. Results showed that the maximum productivity was 12 kg/h at a grinding time of 0.5 min, moisture content of 8% and feeding weight of 100 gm. The minimum energy consumption was 0.13 (kWh/kg) at the maximum productivity conditions. The highest water absorption for corncobs was 549.3% at particle size between 1 and 0.5 mm, so it can be used as a high absorption material. The best operating condition was at the maximum productivity and the minimum energy consumption at grinding time of 0.5 min, moisture content of 8% and feeding weight100 gm.

Enhancing the capacity of large-scale ball mill through process and equipment optimization: An industrial test verification

The production capacity of the large-scale ball mill in the concentrator is a crucial factor affecting the subsequent separation and the economic benefits of the operation. The main aim of this study is to improve the processing capacity of the large-scale ball mill. Taking a Φ5.49 × 8.83 m ball mill as the research object, the reason for the low processing capacity of the ball mill was explored via process mineralogy, physicochemical analysis, workshop process investigation, and the power consumption method. Based on this framework, a series of laboratory grinding optimization tests were conducted and verified via industrial tests. The results show that the ore primarily contained hematite and magnetite, the disseminated particle size of magnetite was primarily a coarse-grained inlay that was easy to separate from gangue, while the disseminated particle size of hematite was primarily an uneven and medium-sized inlay, which increased the grinding difficulty. Under optimum conditions of +6.0 mm material suitable for a 100 mm ball diameter, −6.0 + 2.0 mm material suitable for an 80 mm ball diameter, −2.0 mm material suitable for a 70 mm ball diameter; medium ratio of Φ90 mm 34.62%, Φ70 mm 26.92%, Φ60 mm 23.08%, Φ40 mm 15.38%; filling ratio of 32%; material ball ratio of 1.0; rotation speed rate of 80%; and grinding concentration of 78%, the −0.074 mm content in the grinding product increased from 55.10% to 58.86% and the processing capacity of the ball mill increased from 310 to 320 t/h to 350 t/h. Scanning electron microscopy/energy dispersive X-ray spectrometry (SEM-EDS) micrograph analysis shows that the fineness of the ore and dissociation degree of useful minerals were apparently improved by optimizing the process and equipment.

Synthesis of quaternary nano‐intermetallic LaTi 2 Ni 5 Al 4 with its hydrogen encapsulation and inspection using lithium‐hydride cell

A novel alloy LaTi2Ni5Al4 is investigated in this work. This quaternary composite belongs to the new generation of AB3 intermetallics elaborated using the mechano-milling method. Several analytical techniques are operated in order to verify and confirm the crystallographic patterns following the growth progression of this nanoalloy. Starting from elemental metals, the authors show that they have basically LaTi2Ni5Al4 major pattern corresponding to the symmetry crystal system (Trigonal R-3 m SG: 166). Structure refinement simulation demonstrates that performing this preparation with a laboratory grinding and milling benchtop, they obtain a maximum proportion of AB3 intermetallic alloy after 20 h of metallurgy work processing. The proposition of useful stabilised solid-hydrogen encapsulation is highlighted and tested using a specific lithium-hydride cell.

Assessing the dependency of selection function parameters with batch mill design

The scale-up of laboratory grinding data to industrial milling operations generally relies on tests carried out in cylindrical ball mills run in batch mode. This approach imposes no restriction on the diameter and length of the laboratory mill.In this work, the breakage characteristics of a copper ore were measured using two batch mills of different designs. For each mill, a number of feed samples of similar size distributions were prepared for testing under various conditions. Product size distributions were then measured after predefined milling time intervals. Finally, the selection function and breakage function parameters of the copper ore were back-calculated from the milling data.Results showed that the breakage function parameters from the two mills are statistically similar indicative of a normalisable copper ore. It was also found that the scale-up equations for batch grinding data described well the effect of mill diameter on the selection function parameters.

Fatigue behavior and surface characterization of a Y-TZP after laboratory grinding and regeneration firing

This study evaluated the effect of grinding and regeneration firing on the flexural fatigue limit and surface characterization of Lava™ Y-TZP ceramic. Forty bar-shaped specimens with 20 × 4.0 × 1.2 mm constituted the as-sintered group (AS = control group), and 80 specimens with 20 × 4.0 × 1.5 mm were ground with cylindrical laboratory stone under water-cooling (WG) or in a dry condition (G) to reach 1.2 mm in thickness. Half of specimens were submitted to regeneration firing (1000 °C, 30 min), forming the groups AS/R, WG/R and G/R. Fatigue limit (500,000 cycles, 10 Hz) was determined by staircase method in a 4-point flexural fixture. Data were analyzed by 2-way ANOVA and Tukey HSD tests (α = 0.05). The surface topography (n = 3) and fracture area (n = 3) were evaluated by SEM. Samples were also analyzed by Rietveld refinement from X-ray diffraction data. ANOVA revealed significant differences (P < .001) for grinding protocol, regeneration firing and their interaction. In the groups not submitted to regeneration firing, the mean flexural fatigue limit of WG was higher (P < .05) than that of G and AS, with no statistical difference between each other (P > .05). After regeneration firing the inequality WG>AS>G (P < .05) was observed. The regeneration firing increased the fatigue limit of AS group and decreased those of G and WG groups (P < .05). Grinding protocols created evident grooves on zirconia surface. Failures initiated on tensile side of all specimens. The percentages (wt%) of monoclinic phase before cyclic loading were: AS (7.4), AS/R (6.5), G (2.8), G/R (0.0), WG (4.4), WG/R (0.0); and after cyclic loading: AS (8.6), AS/R (1.2), G (2.4), G/R (5.7), WG (6.3), WG/R (0.0). Wet grinding did not compromise the fatigue limit of zirconia, increasing its mechanical strength. Regeneration firing reduced the fatigue limit of ground samples, despite reducing the amount of monoclinic phase in all experimental conditions.

Improving Sample Collection, Sample Processing, and Laboratory Analyses for Corn Stalk Nitrate Test

Core Ideas Corn stalk nitrate test results can help corn growers fine‐tune N management. Adoption of corn stalk nitrate test use can be enhanced with more practical field sampling protocols. Laboratory processing of corn stalk nitrate test samples can be simplified for reduced analytical cost. The corn (Zea mays L.) stalk nitrate test (CSNT) is a site‐specific, after‐the‐fact, diagnostic tool for N management of corn. Although considered effective, widespread adoption of CSNT is limited due to somewhat impractical sample collection, handling, and laboratory sample processing protocols. Five studies were conducted to evaluate the impact of alternative sampling, sample handling, and laboratory processing protocols on CSNT outcomes. Study 1 evaluated the effect of stalk length and position on CSNT values. In Study 2 timing of sampling or growth stage was evaluated. In Study 3 several sampling patterns within a field (samples taken within a corn row vs. perpendicular or under an angle to rows) were analyzed. Study 4 tested if (a) quartering of stalks, (b) delay in mailing of stalks to the laboratory, and (c) temperature during storage (refrigerator, freezer, room temperature) affected CSNT‐N. Laboratory grinding, extraction, and determination procedures were compared in Study 5. The results suggest that sampling protocols can be adjusted to include shorter stalk samples, taken within 5 d after silage harvest. Direction of sampling within a field did not impact CSNT‐N, eliminating the need for more labor‐intensive sampling. Also, quartering of stalks and different temperature during storage did not change CSNT‐N. Laboratories can use 2‐mm grinding, extraction with distilled water, and a nitrate specific ion electrode or flow injection analysis. We conclude that adjustments in sampling protocols and sample processing can be made, possibly increasing farmer acceptance of the test, and reducing the cost of sampling, sample processing, and laboratory analyses.

Use of Locked-Cycle Protocol to Assess Cement Fineness and Properties in Laboratory Grinding Mills

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Noise emission of concrete pavement surfaces produced by diamond grinding

In Germany, diamond grinding is frequently used to improve the evenness and skid resistance of concrete pavement surfaces. Since diamond grinding has been observed to affect tyre/pavement noise emission favourably, the relationship among surface texture, concrete composition and noise emission of concrete pavement surfaces has been systematically investigated. The simulation program SPERoN was used in a parameter study to investigate the main factors which affect noise emission. Based on the results of the simulations, textured concrete surfaces were produced by using a laboratory grinding machine. As well as the composition of the concrete, the thickness and spacing of the diamond blades were varied. The ability of the textured surfaces to reduce noise emission was assessed from the texture characteristics and air flow resistance of textured surfaces measured in the laboratory. It was found that concrete composition and, in particular, the spacing of the blades affected the reduction in noise emission considerably. The noise emission behaviour of numerous road sections was also considered in field investigations. The pavement surfaces had been textured by diamond grinding during the last years or decades. The results show that diamond grinding is able to provide good, durable noise-reducing properties. Several new pavement sections were investigated using thicknesses and spacings of the blades similar to those used in the laboratory to optimize noise emission reduction. It is concluded that diamond grinding is a good alternative to exposed aggregate concrete for the production of low-noise pavement surfaces.