About Us

Henan LIMING Heavy Industry Science and Technology Co. LTD which mainly manufacture large and medium-sized crushing and grinding equipments was founded in 1987. It is a modern joint-stock corporation with research, manufacturing and sales together. The Headquarter is located in HI-TECH Industry Development Zone of Zhengzhou and covers 80000 m ². Another workshop in Shangjie Industry Park covers 67000 m ². Over the more than 30 years, our company adheres to modern scientific management system, precision manufacturing, pioneering and innovation. Now LIMING has become the leader in domestic and oversea machinery manufacturing industry.

120

million

cubic meters

Industrial chain production base

70

national patents

689sets

national patents

170

Equipment service country

Company Culture

core values of the company

Create Value

Share Value

Observe Order

Respect Value

Service philosophy

Religious, fine, tight, and harmonious

LIMING spirit

Standardization, value, serialization, and differentiation will always exceed our contract

Brand Concept

Create and promote civilization, refine and interpret brilliantly

Business philosophy

Religious, meticulous, rigorous, and harmonious work

Our Global Footprint

Case Scene

Specifications For CRUSHED AGGREGATE BASE COARSE #2 #3 ...

Crushed Aggregate Base Coarse (Compaction Gravel) shall consist of one or more courses or layers of coarse aggregate, either crushed gravel or crushed stone, fine aggregate and binder or filler blended as necessary to produce an intimate mixture of the required gradation and stability.

ITEM P-209 CRUSHED AGGREGATE BASE COURSE

aggregate passing the No. 4 sieve shall consist of fines from the coarse aggregate crushing operation. If necessary, fine aggregate may be added to produce the correct gradation. The fine aggregate shall be produced by crushing stone and gravel that meet the coarse aggregate requirements for wear and soundness. Aggregate base material requirements are listed in Table 209-1. TABLE 209-1 ...

Item 00231 - Cements Stabilized Crushed Aggregate Base Course

CEMENT STABILIZED CRUSHED AGGREGATE BASE COURSE 231.1 Description. This item shall consist of a foundation for surface course or for other base courses and shall be composed of a mixture of crushed aggregate, Portland cement and water and shall be constructed as herein specified and in conformity with the typical cross sections shown on the plans and to the lines and grades established

August 2015 No. 900 SPECIFICATIONS FOR AGGREGATE FOR ...

The Contractor may elect to crush base course aggregate during the winter. Any product of winter crushing not meeting the requirements for the specified type of material shall be re- processed when conditions permit. Binder, supplementary granular or combined material shall be added uniformly to the winter crushed aggregate, by means of a belt type conveyer, immediately prior to entering a ...

SPECIFICATION P–208. AGGREGATE BASE COURSE

Uniformly blend the aggregate during crushing operations or mix in a plant. The plant shall blend and mix the materials to meet the specifications and to secure the proper moisture content for compaction. 208–3.4 PLACING. Place aggregate base material on the prepared underlying course and compact in layers of the thickness shown on the Plans. Deposit and spread the material where designated ...

Successful G1 Crushed Stone Basecourse Construction

G1 Crushed Stone for base course is not the same thing as crusher-run, and it is not just a matter of density that makes the difference. G1 Crushed Stone was developed from single stage crusher-run material when during the late 1950’s some observant Engineers noticed that this material would sometimes, after a sudden downpour and towards the end of its compaction cycle, exhibit the

Pavement materials: Aggregates - NPTEL

also used for base and sub-base courses for both exible and rigid pavements. Aggregates can either be natural or manufactured. Natural aggregates are generally extracted from larger rock formations through an open excavation (quarry). Extracted rock is typically reduced to usable sizes by mechanical crushing. Manufactured aggregate is often a bye product of other manufacturing industries. The ...

Aggregate - AfriSam

Base Course Tertiary Crusher Wash Plant Delivery to Customer Quality Control Process Control. 40 To assist in choosing the correct product for the application, some technical detail regarding the influence of various characteristics and properties of aggregate in relation to the required application is required. Apparent relative density Relative density influences the choice of an aggregate ...

32 11 23 Aggregate Base Course - MHFD

The aggregate base course shall be constructed to the width and section sho wn in the DRAWINGS. If the required compacted depth of base course exceeds six (6) inches, the base shall be constructed in two (2) or more layers of approximate equal thickness. The maximum compacted thickness of any one (1) layer shall not exceed six (6) inches. B. Each layer shall be constructed as far in advance of ...

Civil Engineering: AGGREGATES FOR BASE COURSES Road

23/07/2019  A. Aggregates for use in base course construction shall be either crushed stone or crushed gravel. The fine aggregate shall consist of screenings obtained from crushed stone, gravel or sand. Aggregate shall be washed if necessary to remove excessive quantities of clay, silty clay or salts.

Pavement materials: Aggregates - NPTEL

also used for base and sub-base courses for both exible and rigid pavements. Aggregates can either be natural or manufactured. Natural aggregates are generally extracted from larger rock formations through an open excavation (quarry). Extracted rock is typically reduced to usable sizes by mechanical crushing. Manufactured aggregate is often a bye product of other manufacturing industries. The ...

SECTION 812 - CRUSHED ROCK FOR PAVEMENT BASE AND

20 mm nominal size Classes 1 and 2 base, 20 mm and 40 mm nominal size, Class 3 subbase and for Class 4 crushed rock subbase. The material class, pavement course use and nominal sizes shall be as specified in the special clauses and/or the drawings and/or the schedule. Crushed rock products shall be supplied only from a VicRoads accredited source. Products shall be supplied as Plant Mixed Wet ...

(PDF) Pavement materials: Aggregates 22.1 Overview ...

Aggregate is also used for base and sub-base courses for both flexible and rigid pavements. Aggregates can either be natural or manufactured. Natural aggregates are generally extracted from larger rock formations through an open excavation (quarry). Extracted rock is typically reduced to usable sizes by mechanical crushing. Manufactured aggregate is often a bye product of other manufacturing ...

Sieve Analysis of Fine and Coarse Aggregates

Before Crushing (1) X Before Crushing (2) 5000 X X X X X X X X X Sand Gravel After Crushing 500 X X X X X X X X X Fine Sand with less than 5% on the No. 10 Sieve 200 X X X X X X X Sand with 5% or more retainedon the No. 10 sieve 200/500 X X X X X X X X X X X Mineral Aggregate for Armor Coat 500/600 X Gravel for Surfacing 1000 X X X X X X X X Crushed Rock Screening for Base Coarse

3 Aggregate Properties - in

pulling or crushing forces. Elasticity measures the "stretch" in a particle. High strength and elasticity are desirable in aggregate base and surface courses. These qualities minimize the rate of disi ntegration and maximize the stability of the compacted material. The best results for portland cement concrete may be obtained by compromising between high and low strength, and elasticity. This ...

Use of Crushed/Recycled Concrete as Drainable Base/Subbase ...

Crushing in primary crusher Steel rebar stockpile Vibratory feeder, sorting screen and secondary crusher Stockpile of RCA FHWA (2004) Use of RCA 8 • The principal application of RCA in the US has been as a base/subbase material • The utilization of RCA as aggregate in PCC and HMA is not as widely accepted in the US FHWA (2004) Base/Subbase • To support and distribute heavy pavement loads ...

Los Angeles International Airport Technical Specifications ...

Crushed Aggregate Base Course (FAA P-209 CALTRANS) Page 52-1 ... consist of fines from the coarse aggregate crushing operation. The fine aggregate shall be produced by crushing stone, gravel, or slag that meet the coarse aggregate requirements for wear and soundness. Aggregate base material requirements are listed in the following table. Crushed Aggregate Base Material Requirements

Use of Recycled Concrete Materials in Base/Subbase ...

02/12/2017  crushing hardened concrete from an acceptable source. •Old concrete pavements often are excellent sources of material for producing RCA. •Concrete pavements are 100% recyclable! 2 • PCC pavement –Single and Two-Lift • HMA pavement • Subbase –Unbound –Stabilized • Fill material • Filter material • Drainage layer Uses of Recycled Concrete Aggregate 3. Use of RCA in U.S. 4 ...

DIVISION 300 Bases

Section 304—Aggregate Base or Surface Course Description 304.01 Work. Furnish, haul, and place aggregate base or surface course on the subgrade or base or stockpile site approved by the CO. Work may include additive mineral filler, or binder as specified in the SPECIAL PROJECT SPECIFICA-TIONS. Produce aggregate by pit-run, grid-rolling, screening, or crushing methods, or procure Government ...

Resilient Modulus Development of Aggregate Base and ...

In this study, the stiffness of unbound aggregate bases containing recycled materials will be examined using FWD field test data and laboratory resilient modulus tests. 1.1 Background In the area of pavement recycling, full-depth reclamation is a technique in which the existing pavement surface course along with a portion of the aggregate base are

Sieve Analysis of Fine and Coarse Aggregates

Before Crushing (1) X Before Crushing (2) 5000 X X X X X X X X X Sand Gravel After Crushing 500 X X X X X X X X X Fine Sand with less than 5% on the No. 10 Sieve 200 X X X X X X X Sand with 5% or more retainedon the No. 10 sieve 200/500 X X X X X X X X X X X Mineral Aggregate for Armor Coat 500/600 X Gravel for Surfacing 1000 X X X X X X X X Crushed Rock Screening for Base Coarse

SECTION 812 - CRUSHED ROCK FOR PAVEMENT BASE AND

20 mm nominal size Classes 1 and 2 base, 20 mm and 40 mm nominal size, Class 3 subbase and for Class 4 crushed rock subbase. The material class, pavement course use and nominal sizes shall be as specified in the special clauses and/or the drawings and/or the schedule. Crushed rock products shall be supplied only from a VicRoads accredited source. Products shall be supplied as Plant Mixed Wet ...

(PDF) Pavement materials: Aggregates 22.1 Overview ...

Aggregate is also used for base and sub-base courses for both flexible and rigid pavements. Aggregates can either be natural or manufactured. Natural aggregates are generally extracted from larger rock formations through an open excavation (quarry). Extracted rock is typically reduced to usable sizes by mechanical crushing. Manufactured aggregate is often a bye product of other manufacturing ...

Development of a 3/4-Inch Minus Base Course Type A ...

specification for a new gravel base course with nominal maximum aggregate size of ¾ in. This was accomplished by conducting a review of current ¾-inch minus specifications from around the U.S., using that information to generate a preliminary specification to create ¾-inch minus mixes, testing the material properties of these mixes, and modifying these mixes to determine the effect changes ...

3 Aggregate Properties - in

pulling or crushing forces. Elasticity measures the "stretch" in a particle. High strength and elasticity are desirable in aggregate base and surface courses. These qualities minimize the rate of disi ntegration and maximize the stability of the compacted material. The best results for portland cement concrete may be obtained by compromising between high and low strength, and elasticity. This ...

Use of Recycled Concrete Materials in Base/Subbase ...

02/12/2017  crushing hardened concrete from an acceptable source. •Old concrete pavements often are excellent sources of material for producing RCA. •Concrete pavements are 100% recyclable! 2 • PCC pavement –Single and Two-Lift • HMA pavement • Subbase –Unbound –Stabilized • Fill material • Filter material • Drainage layer Uses of Recycled Concrete Aggregate 3. Use of RCA in U.S. 4 ...

Preferred Aggregate Base Courses for Low-Volume Roads

preferred aggregate base courses used for low-volume asphalt and concrete pavements in states with climates similar to Minnesota’s. MnDOT and LRR are particularly interested in how the preferred aggregate bases of other state departments of transportation (DOTs) compare to MnDOT’s lass 5 virgin aggregate, which is widely used in the state’s rural pavements. Selected state DOTs were ...

DIVISION 300 Bases

Section 304—Aggregate Base or Surface Course Description 304.01 Work. Furnish, haul, and place aggregate base or surface course on the subgrade or base or stockpile site approved by the CO. Work may include additive mineral filler, or binder as specified in the SPECIAL PROJECT SPECIFICA-TIONS. Produce aggregate by pit-run, grid-rolling, screening, or crushing methods, or procure Government ...

Resilient Modulus Development of Aggregate Base and ...

In this study, the stiffness of unbound aggregate bases containing recycled materials will be examined using FWD field test data and laboratory resilient modulus tests. 1.1 Background In the area of pavement recycling, full-depth reclamation is a technique in which the existing pavement surface course along with a portion of the aggregate base are

TS 1010 Aggregates – Base, Subbase, Select Subgrade, and ...

– Base, Subbase, Select Subgrade, and Backfill Material Page 1 of 8 TS 1010 – September 2017 Amendment to OPSS.MUNI 1010 (Apr 2013) – Material Specification for . Aggregates – Base, Subbase, Select Subgrade, and Backfill Material . OPSS 1010.03 DEFINITIONS . Section 1010.03 of OPSS.MUNI 1010 is amended by the addition of the following: Granular A means a set of requirements for dense ...

SECTION 812 - CRUSHED ROCK FOR PAVEMENT BASE AND

20 mm nominal size Classes 1 and 2 base, 20 mm and 40 mm nominal size, Class 3 subbase and for Class 4 crushed rock subbase. The material class, pavement course use and nominal sizes shall be as specified in the special clauses and/or the drawings and/or the schedule. Crushed rock products shall be supplied only from a VicRoads accredited source. Products shall be supplied as Plant Mixed Wet ...

(PDF) Pavement materials: Aggregates 22.1 Overview ...

Aggregate is also used for base and sub-base courses for both flexible and rigid pavements. Aggregates can either be natural or manufactured. Natural aggregates are generally extracted from larger rock formations through an open excavation (quarry). Extracted rock is typically reduced to usable sizes by mechanical crushing. Manufactured aggregate is often a bye product of other manufacturing ...

5 Aggregate Production - in

After primary crushing/reduction the resulting aggregate generally is placed in a large "surge" pile where the aggregate may be fed into the secondary operation whenever convenient. Care is always taken when building up and loading out surge piles, as this step may be a major source of segregation of material going to the secondary plant. Variation at this point may a ffect both mineral ...

Development of a 3/4-Inch Minus Base Course Type A ...

specification for a new gravel base course with nominal maximum aggregate size of ¾ in. This was accomplished by conducting a review of current ¾-inch minus specifications from around the U.S., using that information to generate a preliminary specification to create ¾-inch minus mixes, testing the material properties of these mixes, and modifying these mixes to determine the effect changes ...

Use of Recycled Aggregates in Construction

Graded aggregate produced from sorted and clean waste concrete and masonry. Class 1B RCA is a class 1A RCA blended with no more than 30% crush brick. Road base course and subbase material. Available commercially. Reclaimed Aggregate (RA) Coarse aggregates reclaimed from returned concrete by separating the aggregates from the water-cement slurry.

Lecture 4. Aggregates - Aalto

4.1.1 Aggregate sources classification 4.1.1.1 Natural aggregates • Natural aggregates consists of rock fragments that are used in their natural state, or are used after mechanical processing such as crushing, washing, and sizing. • Some natural aggregate deposits, called pit -run gravel, consist of gravel and sand that can be readily

ROAD COMMISSION FOR OAKLAND COUNTY

AGGREGATE BASE COURSE RCOC/DESIGN: JO Page 1 of 1 RCOC12SP302A 11/26/2018 a. Description. This work shall be done in accordance withSection 302 of the 2012 Michigan Department of Transportation Standard Specifications for Construction, except as herein provided: b. Materials. The material shall meet the requirements specified inTables 902-1 and 9022 of the - 2012 Michigan

Preferred Aggregate Base Courses for Low-Volume Roads

preferred aggregate base courses used for low-volume asphalt and concrete pavements in states with climates similar to Minnesota’s. MnDOT and LRR are particularly interested in how the preferred aggregate bases of other state departments of transportation (DOTs) compare to MnDOT’s lass 5 virgin aggregate, which is widely used in the state’s rural pavements. Selected state DOTs were ...

IRC:109-2015

Wet Mix Macadam is a sub-base/base course of the pavement wherein clean, crushed graded . aggregates and granular material, like, graded coarse sand are mixed with water and rolled to a dense mass on a prepared surface. The work may be done in layers. The thickness of an individual layer shall not be less than 75 mm and can be upto 250 mm. 3 MATERIALS. 3.1 Aggregate 3.1.1. Physical ...

TS 1010 Aggregates – Base, Subbase, Select Subgrade, and ...

– Base, Subbase, Select Subgrade, and Backfill Material Page 1 of 8 TS 1010 – September 2017 Amendment to OPSS.MUNI 1010 (Apr 2013) – Material Specification for . Aggregates – Base, Subbase, Select Subgrade, and Backfill Material . OPSS 1010.03 DEFINITIONS . Section 1010.03 of OPSS.MUNI 1010 is amended by the addition of the following: Granular A means a set of requirements for dense ...