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Aggregates Essential Material | Valuable Asset SUPERPAVE AGGREGATES Transportation Short Course Harry H. Bush Vulcan Materials October 2018
AggregatesEssential Material | Valuable Asset
SUPERPAVE AGGREGATESTransportation Short Course
Harry H. BushVulcan Materials
October 2018
Transportation Short Course 2
T H A N K S TO DATA F I N D E R S
• Gina Gallegos
• Buddy Williams
• The Dynamic Duo - Travis & Ryan
• Chuck Fuller
• Michael Dawidczik
• Richard Izzo
• Jeff Harris
Transportation Short Course 3
• SuperPave Aggregates-What’s the difference?
• Drivers of SP Aggregates & SAC-A Consumption
• Demand/Forecast
• Supply
A G E N DASUPERPAVE AGGREGATES
Transportation Short Course 4
Table 1 Aggregate Quality Requirements
Property Test Method Requirement Coarse Aggregate
SAC Tex-499-A (AQMP) As shown on the plans Deleterious material, %, Max Tex-217-F, Part I 1.0 Decantation, %, Max Tex-217-F, Part II 1.5 Micro-Deval abrasion, % Tex-461-A Note 1 Los Angeles abrasion, %, Max Tex-410-A 35 Magnesium sulfate soundness, 5 cycles, %, Max Tex-411-A 25 Crushed face count,2 %, Min Tex-460-A, Part I 85 Flat and elongated particles @ 5:1, %, Max Tex-280-F 10
Fine Aggregate Linear shrinkage, %, Max Tex-107-E 3
Combined Aggregate3
Sand equivalent, %, Min Tex-203-F 45 1. Used to estimate the magnesium sulfate soundness loss in accordance with Section 344.2.1.1.2., “Micro-Deval
Abrasion.” 2. Only applies to crushed gravel. 3. Aggregates, without mineral filler, RAP, RAS, or additives, combined as used in the job-mix formula (JMF).
• LA Abrasion requirement is 5% lower than 341…• Magnesium Sulfate Soundness is 5% lower than 341…
W H AT M A K E S S P A G G R EG AT E R EQ U I R E M E N T S D I F F E R E N T ?
Transportation Short Course 5
• Gradation is wide open… BUT…….• VMA requirement is 1.0% higher than 341• How do the obtain VMA ?
• The issue is ……….. “OVER or UNDER” !!
G r a d a t i o n C r e a t e s V M A
Table 8 Master Gradation Limits (% Passing by Weight or Volume) and VMA Requirements Sieve Size
SP-A Base
SP-B Intermediate
SP-C Surface
SP-D Fine Mixture
2″ 100.01 – – – 1-1/2″ 98.0–100.0 100.01 – –
1″ 90.0–100.0 98.0–100.0 100.01 – 3/4″ Note 2 90.0–100.0 98.0–100.0 100.01 1/2″ – Note 2 90.0–100.0 98.0–100.0 3/8″ – – Note 2 90.0–100.0 #4 19.0–90.0 23.0–90.0 28.0–90.0 32.0–90.0 #8 19.0–45.0 23.0–49.0 28.0–58.0 32.0–67.0
#16 1.0–45.0 2.0–49.0 2.0–58.0 2.0–67.0 #30 1.0–45.0 2.0–49.0 2.0–58.0 2.0–67.0 #50 1.0–45.0 2.0–49.0 2.0–58.0 2.0–67.0 #200 1.0–7.0 2.0–8.0 2.0–10.0 2.0–10.0
Design VMA, % Minimum 13.0 14.0 15.0 16.0
Production (Plant-Produced) VMA, % Minimum 12.5 13.5 14.5 15.5
1. Defined as maximum sieve size. No tolerance allowed. 2. Must retain at least 10% cumulative.
W H AT M A K E S S P A G G R EG AT E R EQ U I R E M E N T S D I F F E R E N T ?
Transportation Short Course 6
• Stay off the Max Density Line…
• OVER Max Density Line Pros– Less segregation– Smooth surface– Easier compaction– Less AC–
• OVER Max Density Line Cons– High surface area– Takes up effective AC– Cracking potential– Less Durability– Less AC–
O V E R M a x D e n s i t y L i n eW H AT M A K E S S P A G G R EG AT E R EQ U I R E M E N T S D I F F E R E N T ?
Transportation Short Course 7
• UNDER Max Density Line Pros– Higher VMA– Increase Film thickness– Stone on Stone contact– Rut Resistant– Crack Resistant– Long Term Durability–
• UNDER Max Density Line Cons– Segregation Potential – Tough/Harsh Mix– Difficulty getting density– Can be permeable if too coarse–
U N D E R M a x D e n s i t y L i n eW H AT M A K E S S P A G G R EG AT E R EQ U I R E M E N T S D I F F E R E N T ?
Transportation Short Course 8
• How do we get DURABLE & RUT RESISTANT Pavements?
• GO UNDER !!
• But not too far under….
• We may need a bottom limit…
• BEEN THERE-DONE THAT !!
G r a d a t i o n
Sieve Size SP-A SP-B SP-C SP-D#8 26 33 38 46
HMA Limit on No 8 SieveMax % Passing by Weight or Volume
W H AT M A K E S S P A G G R EG AT E R EQ U I R E M E N T S D I F F E R E N T ?
Transportation Short Course 9
D u s t / A s p h a l t R a t i o
Table 10 Laboratory Mixture Design Properties
Mixture Property Test Method Requirement Target laboratory-molded density, % Tex-207-F 96.0 Design gyrations (Ndesign) Tex-241-F 501 Indirect tensile strength (dry), psi Tex-226-F 85–2002 Dust/asphalt binder ratio3 – 0.6–1.6 Boil test4 Tex-530-C –
• Dust/Asphalt Binder Ratio… 0.6 – 1.6• What’s the issue with “Dust”• Too little is BAD… Too much is BAD• What kind of dust is it……
1. Adjust within a range of 35–100 gyrations when shown on the plans or specification or mutually agreed between the Engineer and Contractor.
2. The Engineer may allow the IDT strength to exceed 200 psi if the corresponding Hamburg Wheel rut depth is greater than 3.0 mm and less than 12.5 mm.
3. Defined as % passing #200 sieve divided by asphalt binder content. 4. Used to establish baseline for comparison to production results. May be waived when
approved.
W H AT M A K E S S P A G G R EG AT E R EQ U I R E M E N T S D I F F E R E N T ?
Transportation Short Course 10
• Too much Dust…– Takes up Effective AC– Stiffens the mix– Can cause a tender mix during placement– LOWER CRACK RESISTANCE
• If a bad Clay is present in the Dust….– Cause stripping – Cause Rutting (fail the Hamburg)
D u s t /A s p h a l t R a t i oW H AT M A K E S S P A G G R EG AT E R EQ U I R E M E N T S D I F F E R E N T ?
Transportation Short Course 11
• May need to lower top 0.6 to 1.6 1.2 ……• May need to control the type of dust
– Test Dust for high PI …..– Methylene Blue Test (not good indicator)
D u s t /A s p h a l t R a t i oW H AT M A K E S S P A G G R EG AT E R EQ U I R E M E N T S D I F F E R E N T ?
Transportation Short Course 12
• Superpave mixes typically used in high traffic• High demand for Class A Aggregates• Quick review
W H AT M A K E S S P A G G R EG AT E R EQ U I R E M E N T S D I F F E R E N T ?C l a s s A A g g r e g a te s i n S u p e r p a v e
Transportation Short Course 13
S U P E R PAV E A G G R EG AT E I N H I G H D E M A N D S A C - AP r o d u c t s & T e s t s C o v e r e d i n A Q M P
Transportation Short Course 14
W H AT I S S A C - A R O C KP r o d u c t s & T e s t s C o v e r e d i n A Q M P
SAC A SAC B SAC C
Magnesium Sulfate Soundness(Tex-411-A)
Maximum value25 30 35
Acid Insoluble Residue(Tex-612-J)
Minimum value55 -- --
Crushed Face Count(Tex-460-A)
Minimum value85 85 85
Surface Aggregate Classification (SAC) As determined in Tex-499-A, Table 1
Transportation Short Course 15
W H AT I S S A C - A R O C K
POLISH IS GONE ! !
Transportation Short Course 16
W H AT I S S A C - A R O C K
• What is SAC-A (non Carbonate rock)
– Igneous Rock
• Basalt (Trap Rock)
• Granite
• Rhyolite
– Sand Stone
– River Gravel (non carbonate)
• What is NOT SAC-A
– Carbonate Rock
• Limestone (Calcium Carbonate)
• Dolomite (Magnesium Carbonate & Calcium Carbonate)
– River Gravel (with more than 45% carbonate rock)
Transportation Short Course 17
• SP Aggregates-What’s the difference?
• Drivers of SP Aggregates & SAC-A Consumption
• Demand/Forecast
• Supply
A G E N D ASUPERPAVE AGGREGATES
Transportation Short Course 18
C O N S T R U C T I O N M AT E R I A L S D E M A N D D R I V E R SS u p e r p a v e A g g r e g a t e s
• Population
• Employment
• Energy Industry
• Public Spending
• TxDOT
• Private Investments
Transportation Short Course 19
Largest absolute population growth among states from 2016-2017 with a growth of 400,000
T E X A S P O P U L AT I O N G R O W T H I S T H E H I G H E S T I N T H E U . S .S u p e r p a v e A g g r e g a t e s
1.4 % growth rate7th highest
Transportation Short Course 20
T E X A S E M P L O Y M E N T G R O W T H F O R 2 0 1 8 I S F O R E C A S T E D AT 2 . 8 %S u p e r p a v e A g g r e g a t e s
Transportation Short Course 21
TEXAS POPULATION GROWTH IS CONCENTRATED
Transportation Short Course 22
Texas Population:2017 Estimated: 28.3 million2026 Estimated: 32.4 million
People Added: 4.1 millionTons consumed per person (40 year avg.): x 8.1 tons/person
Estimated additional tons per yearby 2026: 33.2 million
Expected additional demand is equal to another current Vulcan Southwest Division
THE FUTURE LOOKS EXTREMELY BRIGHT FOR TEXAS!Superpave Aggregates
Transportation Short Course 23
Texas Population:2017 Estimated: 28 million2026 Estimated: 32 million
People Added: 4 millionAggregate tons consumed per person (40 year avg.): x 7-8 tons/person
Estimated additional tons by 2026: 28-33 million
THE FUTURE LOOKS EXTREMELY BRIGHT FOR TEXAS!Superpave Aggregates
Estimates are illustrative only of past history
Transportation Short Course 24
T E X A S - I N V E S T I N G I N I N F R A S T R U C T U R E – T X D O T L E T T I N G F O R E C A S TS u p e r p a v e A g g r e g a t e s
Proposition 1 and proposition 7 add new revenue streams
$7.1
$5.3
$6.1
$7.3
$6.2
$7.3
$8.5
$0
$1
$2
$3
$4
$5
$6
$7
$8
$9
FY 2013 A FY 2014 A FY 2015 A FY 2016 A FY 2017 A FY 2018 A FY 2019 P
TxDO
T Le
ttin
g , $
Billi
ons
Transportation Short Course 25
TXDOT LETTING FORECAST BY MONTH – 2018 AND 2019Superpave Aggregates
63
234
687
1,051
331247
301 324
841959
1,0741,202
516
657
522 561
354 353 390470
886821
2,278
739
22
77
58 61
7871
84 84
99
117
188
165
84
68 6559
8292 97
140148
114
97
355
0
50
100
150
200
250
300
350
400
$0
$500
$1,000
$1,500
$2,000
$2,500
Num
ber o
f Con
trac
ts
Stat
ewid
e Le
ttin
g Am
ount
, $m
ilion
s
Texas Department of TransportationLetting Forecast by Month FY 2018 and 2019
Texas Letting Amount Number of Contracts
Transportation Short Course 26
• SP Aggregates-What’s the difference?
• Drivers of SP Aggregates & SAC-A Consumption
• Demand/Forecast
• Supply
A G E N D ASUPERPAVE AGGREGATES
Transportation Short Course 27
WHAT IS THE ULTIMATE REASON FOR SAC-A ROCK
Transportation Short Course 28
WHAT IS THE ULTIMATE REASON FOR SAC-A ROCK
Transportation Short Course 29
WHAT IS THE ULTIMATE REASON FOR SAC-A ROCK
WET WEATHER ACCIDENT REDUCTION !!
Transportation Short Course 30
WHAT IS THE ULTIMATE REASON FOR SAC-A ROCKSAVES LIVES
Transportation Short Course 31
SAC-A PROJECTED DEMANDBy the Numbers
• Districts 2019 Projections Report (just received)
– Not complete (some Districts not reported yet)
– Some Districts did not report any SAC-A
• Total of about 10.2 Million HMA tons
• 2018 projection of 17.5 Million HMA tons
Transportation Short Course 32
RICHARD IZZO CALCULATIONSSAC-A Mix & Seal Aggregate only
SAC-A Aggregate Tons
Item Material Type Grade Abilene Amarillo Atlanta Austin Beaumont Brownwood Bryan Childress Corpus Christi Dallas El Paso Fort Worth Houston Laredo Lubbock Lufkin Odessa Paris Pharr San Angelo San Antonio Tyler Waco Wichita Falls Yoakum TOTAL
316 Aggregate PB or PL 4 0 0 16,300 0 0 0 94,656 0 0 0 0 0 1,923 24,278 0 6,562 0 0 0 0 0 0 0 0 0 143,719316 Aggregate B 4 0 0 63 0 0 0 0 0 0 0 0 0 0 0 0 0 2,198 0 0 0 0 0 0 0 0 2,261316 Aggregate B 5 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2,962 0 0 0 0 0 0 0 0 2,962316 Aggregate C 4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 19,247 0 0 0 0 0 0 0 0 19,247316 Aggregate PB 4 0 0 0 0 0 0 0 13,971 0 0 0 0 0 0 0 0 24,398 11,999 0 0 0 0 0 0 0 50,368316 Aggregate PB 3 0 0 0 0 0 0 11,812 0 0 0 0 0 0 0 0 0 0 47,632 0 0 0 0 0 0 0 59,443316 Aggregate L or B 5 0 0 0 0 0 0 9,695 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 9,695340 Mix C 0 0 0 0 0 0 0 0 0 0 0 0 544 0 0 815 0 0 0 0 0 0 0 0 0 1,359340 Mix D 0 0 413 0 0 0 0 356 0 0 0 109 1,312 0 0 0 0 0 0 0 0 0 0 0 0 2,190341 Mix B 0 0 0 0 0 0 0 0 0 0 0 16,477 0 0 0 0 0 0 0 0 0 0 0 0 0 16,477341 Mix C 0 0 0 0 0 0 0 0 0 0 0 3,626 71 26,435 2,674 10,290 0 46,745 0 0 0 0 9,789 0 0 99,630341 Mix D 0 0 0 0 0 0 0 19,238 0 0 0 17,743 46,018 0 0 32,472 0 18,069 89 0 0 0 0 0 0 133,629341 Mix F 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 351 0 0 0 0 0 0 0 351342 Aggregate C 0 0 0 0 0 0 0 0 0 0 0 5,892 0 0 0 10,981 0 0 0 0 0 20,654 1,350 11,250 0 50,127342 Aggregate F 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 15,750 0 0 15,750344 Mix SP-C 0 217,740 17,817 0 0 0 13,975 0 0 0 35,680 0 0 0 0 23,922 0 0 9,939 0 0 12,879 0 0 0 331,952344 Mix SP-D 3,021 79,800 0 0 0 0 6,001 0 0 0 0 0 0 0 0 978 0 0 39,708 0 0 2,278 0 0 0 131,787346 Mix D 33,203 84,600 18,802 0 0 0 2,758 0 0 0 0 0 3,282 0 0 0 11,556 0 0 0 0 0 41,360 0 0 195,560346 Mix C 0 0 1,508 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 9,400 0 10,908346 SMA D 0 0 0 0 0 0 0 0 47,640 0 0 8,645 0 0 72,790 0 0 0 104,625 0 2,473 0 0 0 0 236,173346 SMAR F 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 59,291 0 0 0 0 0 0 0 0 59,291347 Aggregate 0 0 0 0 0 20,925 0 0 0 0 0 19,472 0 0 0 0 0 0 0 0 0 0 0 0 0 40,397347 Aggregate TOM-C 0 0 0 0 0 0 0 0 0 0 6,858 0 83,657 0 0 18,694 79,732 0 0 0 5,246 0 60,000 0 0 254,186347 Aggregate TOM-F 0 0 0 0 0 0 0 0 0 0 0 0 41,414 0 0 0 0 0 0 0 0 0 375 0 0 41,789348 Aggregate TBPFC 0 0 0 0 0 0 0 0 0 0 0 0 1,096 0 0 0 0 0 0 0 0 0 0 0 0 1,096348 TBWC - Aggregate C 0 0 0 0 0 0 0 0 16,259 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 16,259350 Mix 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
36,224 382,140 54,902 0 0 20,925 138,897 33,565 63,899 0 42,538 71,965 179,318 50,712 75,464 104,714 199,383 124,797 154,361 0 7,718 35,811 128,624 20,650 0 1,926,608TOTAL
SAC-A HMA Mix Tons
Item Material Type Grade Abilene Amarillo Atlanta Austin Beaumont Brownwood Bryan Childress Corpus Christi Dallas El Paso Fort Worth Houston Laredo Lubbock Lufkin Odessa Paris Pharr San Angelo San Antonio Tyler Waco Wichita Falls Yoakum TOTAL
316 Aggregate PB or PL 4 0 0 14,000 0 0 81,300 0 0 0 0 0 1,652 20,852 0 5,636 0 0 0 0 0 0 0 0 0 123,440316 Aggregate B 4 0 0 54 0 0 0 0 0 0 0 0 0 0 0 0 1,888 0 0 0 0 0 0 0 0 1,942316 Aggregate B 5 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2,536 0 0 0 0 0 0 0 0 2,536316 Aggregate C 4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 16,531 0 0 0 0 0 0 0 0 16,531316 Aggregate PB 4 0 0 0 0 0 0 12,000 0 0 0 0 0 0 0 0 20,955 10,306 0 0 0 0 0 0 0 43,261316 Aggregate PB 3 0 0 0 0 0 9,700 0 0 0 0 0 0 0 0 0 0 39,116 0 0 0 0 0 0 0 48,816316 Aggregate L or B 5 0 0 0 0 0 8,300 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8,300340 Mix C 0 0 0 0 0 0 0 0 0 0 0 2,278 0 0 3,415 0 0 0 0 0 0 0 0 0 5,693340 Mix D 0 0 1,738 0 0 0 1,500 0 0 0 460 5,524 0 0 0 0 0 0 0 0 0 0 0 0 9,222341 Mix B 0 0 0 0 0 0 0 0 0 0 69,015 0 0 0 0 0 0 0 0 0 0 0 0 69,015341 Mix C 0 0 0 0 0 0 0 0 0 0 15,189 299 110,721 11,200 43,099 0 195,792 0 0 0 0 41,000 0 0 417,300341 Mix D 0 0 0 0 0 0 81,000 0 0 0 74,709 193,760 0 0 136,723 0 76,082 375 0 0 0 0 0 0 562,649341 Mix F 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1,487 0 0 0 0 0 0 0 1,487342 Aggregate C 0 0 0 0 0 0 0 0 0 0 13,094 0 0 0 24,402 0 0 0 0 45,898 3,000 25,000 0 111,394342 Aggregate F 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 35,000 0 0 35,000344 Mix SP-C 0 760,000 62,190 0 0 48,778 0 0 0 124,536 0 0 0 0 83,499 0 0 34,691 0 0 44,953 0 0 0 1,158,647344 Mix SP-D 10,600 280,000 0 0 0 21,057 0 0 0 0 0 0 0 0 3,433 0 0 139,326 0 0 7,994 0 0 0 462,410346 Mix D 88,307 225,000 50,004 0 0 7,334 0 0 0 0 0 8,728 0 0 0 30,733 0 0 0 0 0 110,000 0 0 520,106346 Mix C 0 0 4,010 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 25,000 0 29,010346 SMA D 0 0 0 0 0 0 0 126,702 0 0 22,992 0 0 193,591 0 0 0 278,259 0 6,576 0 0 0 0 628,120346 SMAR F 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 157,689 0 0 0 0 0 0 0 0 157,689347 Aggregate 0 0 0 0 27,900 0 0 0 0 0 25,962 0 0 0 0 0 0 0 0 0 0 0 0 0 53,862347 Aggregate TOM-C 0 0 0 0 0 0 0 0 0 9,144 0 111,543 0 0 24,925 106,309 0 0 0 6,994 0 80,000 0 0 338,915347 Aggregate TOM-F 0 0 0 0 0 0 0 0 0 0 0 55,219 0 0 0 0 0 0 0 0 0 500 0 0 55,719348 Aggregate TBPFC 0 0 0 0 0 0 0 0 0 0 0 2,435 0 0 0 0 0 0 0 0 0 0 0 0 2,435348 TBWC - Aggregate C 0 0 0 0 0 0 0 36,131 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 36,131350 Mix 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
98,907 1,265,000 131,996 0 0 27,900 176,469 94,500 162,833 0 133,680 221,421 381,438 131,573 204,791 325,132 336,641 322,783 452,651 0 13,570 98,845 269,500 50,000 0 4,899,629TOTAL
1,926,000 Tons of SAC-A Aggregate
Transportation Short Course 33
TRAVIS & RYAN SUMMARY
DISTRICT 340 SAC A 340 SAC B 341 SAC A 341 SAC B 342 344 SAC A 344 SAC B 346 347 348 TOTAL 316 SAC A 316 SAC B 316 Not Specified TOTALABILENE 12,198 10,600 253,608 88,307 364,713 119,344 119,344AMARILLO 30,500 274,500 1,040,000 225,000 1,570,000 90,000 90,000ATLANTA 61,738 129,590 860 69,614 261,802 14,054 16,810 30,864AUSTIN NO DATA--------------------------------------------------------------------------------------------------------------------------------------------- 0 0BEAUMONT 8,600 13,600 122,400 7,400 66,600 53,500 272,100 35,500 35,500BROWNWOOD 45,879 11,279 27,900 85,058 62,535 62,535BRYAN 69,835 7,334 77,169 99,300 99,300CHILDRESS 1,500 81,000 82,500 12,000 12,000CORPUS CHRISTI 81,559 145,857 60,571 126,702 38,248 452,937 95,288 95,288DALLAS 42,121 379,087 421,208 49,261 49,261EL PASO 17,989 161,905 124,536 9,144 313,574 0FORT WORTH 460 93,657 158,913 225,330 13,094 22,992 25,962 540,408 122,470 122,470HOUSTON 7,802 15,648 194,059 56,629 8,728 171,763 2,435 457,064 1,652 20,707 22,359LAREDO 22,144 199,297 221,441 20,852 20,852LUBBOCK 11,200 261,418 193,591 466,209 101,954 101,954LUFKIN 3,415 179,822 46,950 24,402 148,514 24,925 428,028 5,636 40,830 33,454 79,920ODESSA 30,733 382,420 157,689 106,309 677,150 41,910 41,910PARIS 273,361 77,474 350,835 49,422 6,538 55,960PHARR 375 36,873 174,017 149,397 278,259 638,922 20,772 20,772SAN ANGELO 170,369 170,369 93,738 93,738SAN ANTONIO 194 572,959 178,918 6,576 6,994 765,641 83,898 83,898TYLER 500 45,898 105,515 60,033 211,946 60,885 60,885WACO 2,200 41,000 590,000 38,000 1,500 110,000 130,000 912,700 61,450 61,450WICHITA FALLS 5,000 10,000 25,000 25,000 30,000 95,000 38,000 38,000YOAKUM 415,000 415,000 111,000 111,000
TOTAL: 92,904 369,263 1,005,974 3,092,764 146,394 1,907,861 1,744,642 1,348,292 502,996 40,683 10,251,773 244,826 1,134,594 129,839 1,509,259% 0.9 3.6 9.8 30.2 1.4 18.6 17.0 13.2 4.9 0.4 16.2 75.2 8.6
SAC-A % of mix: 20% 20% 40% 25% 35% 74% 40% 100%SAC-A ROCK: 18,581 201,195 58,558 476,965 471,902 372,217 16,273 244,826 Total SAC-A: 1,860,517
*red numbers indicate that the district did not prvide SAC A vs SAC B data. Based on historical statewide averages, 10% was assumed SAC A and 90% was assumed SAC B. SAC-A % of Total Mix: 18.1%
MIX TYPE (TONS) Seal Coat Aggregate (CY)
1,860,000 Tons of SAC-A Aggregate
Transportation Short Course 34
SAC-A PROJECTED DEMAND
• Chuck Fuller (THE DATA MINER) numbers -
– Past 5 years SAC-A aggregate usage has been 8.5 to 10.5% of total HMA tons.
• 10% SAC-A of total HMA tons 2018 is 1.75 M tons
• BUT - the 2019 Report total of SAC-A is 1.9 M tons
• Based on ONLY 10.2 M tons of total HMA Mix
• That’s 18.6% SAC-A aggregate of total HMA tons
Transportation Short Course 35
14
108
1819
24
2015 2016 2017 2018 2019 20230
5
10
15
20
25
30
Asph
alt D
eman
d (to
ns)
Mill
ions
TEXAS DOT HMA DEMANDS u p e r p a v e A g g r e g a t e s
HMA Demand for next fiscal
year looks to be up slightly
Transportation Short Course 36
14
108
1819
24
2015 2016 2017 2018 2019 20230
5
10
15
20
25
30
Asph
alt D
eman
d (to
ns)
Mill
ions
TEXAS DOT HMA DEMANDS u p e r p a v e A g g r e g a t e s
Will HMA tons stay flat ?
If the next five years look like
the previous five
Transportation Short Course 37
4.3
1.31.0 0.8
1.8 1.92.4
2015 2016 2017 2018 2019 20230
1
2
3
4
5
SAC
A De
man
d (to
ns)
Mill
ions
TEXAS DOT SAC A DEMANDS u p e r p a v e A g g r e g a t e s
3.4 At 18% total HMA tons
At 10% total HMA tons
2019 demand projected to be from 1.9 to 3.4 million tons
Transportation Short Course 38
1.31.0 0.8
1.8 1.92.4
2015 2016 2017 2018 2019 20230
1
2
3
4
5
SAC
A De
man
d (to
ns)
Mill
ions
TEXAS DOT SAC A DEMANDS u p e r p a v e A g g r e g a t e s
3.4
4.3At 18%
At 10%
If trend continues over the next 5 years
Transportation Short Course 39
A Troubling Trend - Taste for Steak
25%Ribs
Short-Loin
Sirloin
If everybody wants steak, then do you have to throw away the rest of the cow?
Transportation Short Course 40
Asphalt Plants
Ready-Mix Concrete Plants
Paving Contractors
Homebuilders
Site & Utility Contractors
Commercial Building Contractors
Government
Agriculture
A G G R E G AT E P R O D U C E R S S E R V E S E V E R A L C U S T O M E R G R O U P S
In many cases
they are using same
products
What happens when everybody wants steak?
Transportation Short Course 41
“The more times you crush it – the more it costs.”
Typical Aggregate Plant
22% 33% 25% 20%
¾” Base 1” x ½” ½” x #4 -#4
Cows don’t just produce steak – you have to make some hamburger, brisket,
roast, tongue, liver, heart…
ScreeningsBase Large Small(Premium Aggregates)
STRATEGIC OUTLOOK FOR AGGREGATES
Transportation Short Course 42
30%22%6%
42%
¾” Base 1” x ½” ½” x #4 -#4
Typical Aggregate Plant
Recrush 1”x ½”
Plant production slowed 50%
Mfg. Sand &ScreeningsLarge Small
Premium Aggregates
“The more times you crush it – the more it costs.”
S T R AT E G I C O U T L O O K F O R A G G R E G AT E S
Transportation Short Course 43
• Additional operating costs for longer or additional shifts
• Less product available for other customers
• Demand for more clean stone that requires the plant to run “out of balance”
• Less base & screenings used – causing more product that can’t be sold
Eating just Steak(demand for one size aggregate)
Transportation Short Course 44
• SP Aggregates-What’s the difference?
• Drivers of SP Aggregates & SAC-A Consumption
• Demand/Forecast
• Supply
A G E N D ASUPERPAVE AGGREGATES
Transportation Short Course 45
TXDOT – BITUMINOUS RATED SOURCE QUALITY CATALOG
SAC A (47)
SAC B (58)
(5)
(14)
(4)
New Mexico
OklahomaArkansas
Amarillo
CorpusChristi
Austin
San Antonio
Fort WorthDallas
Waco
Yoakum
Bryan
Lubbock
Childress
Abilene
Brownwood
San Angelo
OdessaEl Paso
Laredo
Pharr
Wichita FallsParis
Atlanta
Tyler
Houston
Lufkin
Beaumont
Mexico
(2)
(2)
(2)A&B
(2)
(2)
(3)1A&2B
(2)A&B
(2)
BRSQC Sept. 2018
Transportation Short Course 46
TEXAS HARD ROCK GEOLOGY
Transportation Short Course 47
TEXAS HARD ROCK GEOLOGY SAC A SOURCES
Transportation Short Course 48
TEXAS SAC A QUARRIESS u p e r p a v e A g g r e g a t e s
3941
43 42 4245
4750
0
10
20
30
40
50
60
2009 2012 2013 2015 2016 2017 2018 2023
Aggregate Industry Continues to Grow for the Market
Transportation Short Course 49
SAC-A INDUSTRY GROWTHS u p e r p a v e A g g r e g a t e s
• More Quarries & SAC-A Gravel coming on line
• More Railroad served Quarries & Distribution Yards
• Increasing capacity at existing quarries
• Rail service improving with BN & UP
• INDUSTRY IS MAKING HUGH INVESTMENTS ……
Transportation Short Course 50
END
